Author: Steven Perron
Date: 2026-02-11T09:12:22-05:00
New Revision: 3f73f839e2044b57adfaf0ada7b7dcedc54fcc0f

URL: 
https://github.com/llvm/llvm-project/commit/3f73f839e2044b57adfaf0ada7b7dcedc54fcc0f
DIFF: 
https://github.com/llvm/llvm-project/commit/3f73f839e2044b57adfaf0ada7b7dcedc54fcc0f.diff

LOG: [HLSL] Implement Sample* methods for Texture2D (#179322)

This commit implement the methods:

- SampleBias
- SampleCmp
- SampleCmpLevelZero
- SampleGrad
- SampleLevel

They are added to the Texture2D resource type. All overloads except for
those with the `status` argument.

Part of https://github.com/llvm/llvm-project/issues/175630

Assisted-by: Gemini

---------

Co-authored-by: Helena Kotas <[email protected]>

Added: 
    clang/test/CodeGenHLSL/resources/Texture2D-Sample.hlsl
    clang/test/CodeGenHLSL/resources/Texture2D-SampleBias.hlsl
    clang/test/CodeGenHLSL/resources/Texture2D-SampleCmp.hlsl
    clang/test/CodeGenHLSL/resources/Texture2D-SampleCmpLevelZero.hlsl
    clang/test/CodeGenHLSL/resources/Texture2D-SampleGrad.hlsl
    clang/test/CodeGenHLSL/resources/Texture2D-SampleLevel.hlsl
    clang/test/SemaHLSL/Texture2D-SampleBias.hlsl
    clang/test/SemaHLSL/Texture2D-SampleCmp.hlsl
    clang/test/SemaHLSL/Texture2D-SampleCmpLevelZero.hlsl
    clang/test/SemaHLSL/Texture2D-SampleGrad.hlsl
    clang/test/SemaHLSL/Texture2D-SampleLevel.hlsl

Modified: 
    clang/include/clang/Basic/Builtins.td
    clang/include/clang/Basic/DiagnosticSemaKinds.td
    clang/lib/CodeGen/CGHLSLBuiltins.cpp
    clang/lib/CodeGen/CGHLSLRuntime.h
    clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp
    clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.h
    clang/lib/Sema/HLSLExternalSemaSource.cpp
    clang/lib/Sema/SemaHLSL.cpp
    clang/test/AST/HLSL/Texture2D-AST.hlsl

Removed: 
    clang/test/CodeGenHLSL/resources/Texture2D.sample.hlsl


################################################################################
diff  --git a/clang/include/clang/Basic/Builtins.td 
b/clang/include/clang/Basic/Builtins.td
index 05e3af4a0e96f..ed4ec10375e48 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -5024,6 +5024,36 @@ def HLSLResourceSample : LangBuiltin<"HLSL_LANG"> {
   let Prototype = "void(...)";
 }
 
+def HLSLResourceSampleBias : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_resource_sample_bias"];
+  let Attributes = [NoThrow];
+  let Prototype = "void(...)";
+}
+
+def HLSLResourceSampleGrad : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_resource_sample_grad"];
+  let Attributes = [NoThrow];
+  let Prototype = "void(...)";
+}
+
+def HLSLResourceSampleLevel : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_resource_sample_level"];
+  let Attributes = [NoThrow];
+  let Prototype = "void(...)";
+}
+
+def HLSLResourceSampleCmp : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_resource_sample_cmp"];
+  let Attributes = [NoThrow];
+  let Prototype = "void(...)";
+}
+
+def HLSLResourceSampleCmpLevelZero : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_resource_sample_cmp_level_zero"];
+  let Attributes = [NoThrow];
+  let Prototype = "void(...)";
+}
+
 def HLSLResourceUninitializedHandle : LangBuiltin<"HLSL_LANG"> {
   let Spellings = ["__builtin_hlsl_resource_uninitializedhandle"];
   let Attributes = [NoThrow];

diff  --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td 
b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index f12677ac11600..887d1b5f2bbfd 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -13509,6 +13509,9 @@ def err_hlsl_assign_to_global_resource: Error<
 
 def err_hlsl_push_constant_unique
     : Error<"cannot have more than one push constant block">;
+def err_hlsl_samplecmp_requires_float
+    : Error<"'SampleCmp' and 'SampleCmpLevelZero' require resource to contain "
+            "a floating point type">;
 
 // Layout randomization diagnostics.
 def err_non_designated_init_used : Error<

diff  --git a/clang/lib/CodeGen/CGHLSLBuiltins.cpp 
b/clang/lib/CodeGen/CGHLSLBuiltins.cpp
index c72eef1982e9e..5c060598e4b39 100644
--- a/clang/lib/CodeGen/CGHLSLBuiltins.cpp
+++ b/clang/lib/CodeGen/CGHLSLBuiltins.cpp
@@ -414,6 +414,30 @@ static std::string 
getSpecConstantFunctionName(clang::QualType SpecConstantType,
   return Name;
 }
 
+static Value *emitHlslOffset(CodeGenFunction &CGF, const CallExpr *E,
+                             unsigned OffsetArgIndex) {
+  if (E->getNumArgs() > OffsetArgIndex)
+    return CGF.EmitScalarExpr(E->getArg(OffsetArgIndex));
+
+  llvm::Type *CoordTy = CGF.ConvertType(E->getArg(2)->getType());
+  llvm::Type *Int32Ty = CGF.Int32Ty;
+  llvm::Type *OffsetTy = Int32Ty;
+  if (auto *VT = dyn_cast<llvm::FixedVectorType>(CoordTy))
+    OffsetTy = llvm::FixedVectorType::get(Int32Ty, VT->getNumElements());
+  return llvm::Constant::getNullValue(OffsetTy);
+}
+
+static Value *emitHlslClamp(CodeGenFunction &CGF, const CallExpr *E,
+                            unsigned ClampArgIndex) {
+  Value *Clamp = CGF.EmitScalarExpr(E->getArg(ClampArgIndex));
+  // The builtin is defined with variadic arguments, so the clamp parameter
+  // might have been promoted to double. The intrinsic requires a 32-bit
+  // float.
+  if (Clamp->getType() != CGF.Builder.getFloatTy())
+    Clamp = CGF.Builder.CreateFPCast(Clamp, CGF.Builder.getFloatTy());
+  return Clamp;
+}
+
 Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
                                             const CallExpr *E,
                                             ReturnValueSlot ReturnValue) {
@@ -495,19 +519,7 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned 
BuiltinID,
     Args.push_back(HandleOp);
     Args.push_back(SamplerOp);
     Args.push_back(CoordOp);
-    if (E->getNumArgs() > 3) {
-      Args.push_back(EmitScalarExpr(E->getArg(3)));
-    } else {
-      // Default offset is 0.
-      // We need to know the type of the offset. It should be a vector of i32
-      // with the same number of elements as the coordinate, or scalar i32.
-      llvm::Type *CoordTy = CoordOp->getType();
-      llvm::Type *Int32Ty = Builder.getInt32Ty();
-      llvm::Type *OffsetTy = Int32Ty;
-      if (auto *VT = dyn_cast<llvm::FixedVectorType>(CoordTy))
-        OffsetTy = llvm::FixedVectorType::get(Int32Ty, VT->getNumElements());
-      Args.push_back(llvm::Constant::getNullValue(OffsetTy));
-    }
+    Args.push_back(emitHlslOffset(*this, E, 3));
 
     llvm::Type *RetTy = ConvertType(E->getType());
     if (E->getNumArgs() <= 4) {
@@ -515,16 +527,124 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned 
BuiltinID,
           RetTy, CGM.getHLSLRuntime().getSampleIntrinsic(), Args);
     }
 
-    llvm::Value *Clamp = EmitScalarExpr(E->getArg(4));
-    // The builtin is defined with variadic arguments, so the clamp parameter
-    // might have been promoted to double. The intrinsic requires a 32-bit
-    // float.
-    if (Clamp->getType() != Builder.getFloatTy())
-      Clamp = Builder.CreateFPCast(Clamp, Builder.getFloatTy());
-    Args.push_back(Clamp);
+    Args.push_back(emitHlslClamp(*this, E, 4));
     return Builder.CreateIntrinsic(
         RetTy, CGM.getHLSLRuntime().getSampleClampIntrinsic(), Args);
   }
+  case Builtin::BI__builtin_hlsl_resource_sample_bias: {
+    Value *HandleOp = EmitScalarExpr(E->getArg(0));
+    Value *SamplerOp = EmitScalarExpr(E->getArg(1));
+    Value *CoordOp = EmitScalarExpr(E->getArg(2));
+    Value *BiasOp = EmitScalarExpr(E->getArg(3));
+    if (BiasOp->getType() != Builder.getFloatTy())
+      BiasOp = Builder.CreateFPCast(BiasOp, Builder.getFloatTy());
+
+    SmallVector<Value *, 6> Args; // Max 6 arguments for SampleBias
+    Args.push_back(HandleOp);
+    Args.push_back(SamplerOp);
+    Args.push_back(CoordOp);
+    Args.push_back(BiasOp);
+    Args.push_back(emitHlslOffset(*this, E, 4));
+
+    llvm::Type *RetTy = ConvertType(E->getType());
+    if (E->getNumArgs() <= 5)
+      return Builder.CreateIntrinsic(
+          RetTy, CGM.getHLSLRuntime().getSampleBiasIntrinsic(), Args);
+
+    Args.push_back(emitHlslClamp(*this, E, 5));
+    return Builder.CreateIntrinsic(
+        RetTy, CGM.getHLSLRuntime().getSampleBiasClampIntrinsic(), Args);
+  }
+  case Builtin::BI__builtin_hlsl_resource_sample_grad: {
+    Value *HandleOp = EmitScalarExpr(E->getArg(0));
+    Value *SamplerOp = EmitScalarExpr(E->getArg(1));
+    Value *CoordOp = EmitScalarExpr(E->getArg(2));
+    Value *DDXOp = EmitScalarExpr(E->getArg(3));
+    Value *DDYOp = EmitScalarExpr(E->getArg(4));
+
+    SmallVector<Value *, 7> Args;
+    Args.push_back(HandleOp);
+    Args.push_back(SamplerOp);
+    Args.push_back(CoordOp);
+    Args.push_back(DDXOp);
+    Args.push_back(DDYOp);
+    Args.push_back(emitHlslOffset(*this, E, 5));
+
+    llvm::Type *RetTy = ConvertType(E->getType());
+
+    if (E->getNumArgs() <= 6) {
+      return Builder.CreateIntrinsic(
+          RetTy, CGM.getHLSLRuntime().getSampleGradIntrinsic(), Args);
+    }
+
+    Args.push_back(emitHlslClamp(*this, E, 6));
+    return Builder.CreateIntrinsic(
+        RetTy, CGM.getHLSLRuntime().getSampleGradClampIntrinsic(), Args);
+  }
+  case Builtin::BI__builtin_hlsl_resource_sample_level: {
+    Value *HandleOp = EmitScalarExpr(E->getArg(0));
+    Value *SamplerOp = EmitScalarExpr(E->getArg(1));
+    Value *CoordOp = EmitScalarExpr(E->getArg(2));
+    Value *LODOp = EmitScalarExpr(E->getArg(3));
+    if (LODOp->getType() != Builder.getFloatTy())
+      LODOp = Builder.CreateFPCast(LODOp, Builder.getFloatTy());
+
+    SmallVector<Value *, 5> Args; // Max 5 arguments for SampleLevel
+    Args.push_back(HandleOp);
+    Args.push_back(SamplerOp);
+    Args.push_back(CoordOp);
+    Args.push_back(LODOp);
+    Args.push_back(emitHlslOffset(*this, E, 4));
+
+    llvm::Type *RetTy = ConvertType(E->getType());
+    return Builder.CreateIntrinsic(
+        RetTy, CGM.getHLSLRuntime().getSampleLevelIntrinsic(), Args);
+  }
+  case Builtin::BI__builtin_hlsl_resource_sample_cmp: {
+    Value *HandleOp = EmitScalarExpr(E->getArg(0));
+    Value *SamplerOp = EmitScalarExpr(E->getArg(1));
+    Value *CoordOp = EmitScalarExpr(E->getArg(2));
+    Value *CmpOp = EmitScalarExpr(E->getArg(3));
+    if (CmpOp->getType() != Builder.getFloatTy())
+      CmpOp = Builder.CreateFPCast(CmpOp, Builder.getFloatTy());
+
+    SmallVector<Value *, 6> Args; // Max 6 arguments for SampleCmp
+    Args.push_back(HandleOp);
+    Args.push_back(SamplerOp);
+    Args.push_back(CoordOp);
+    Args.push_back(CmpOp);
+    Args.push_back(emitHlslOffset(*this, E, 4));
+
+    llvm::Type *RetTy = ConvertType(E->getType());
+    if (E->getNumArgs() <= 5) {
+      return Builder.CreateIntrinsic(
+          RetTy, CGM.getHLSLRuntime().getSampleCmpIntrinsic(), Args);
+    }
+
+    Args.push_back(emitHlslClamp(*this, E, 5));
+    return Builder.CreateIntrinsic(
+        RetTy, CGM.getHLSLRuntime().getSampleCmpClampIntrinsic(), Args);
+  }
+  case Builtin::BI__builtin_hlsl_resource_sample_cmp_level_zero: {
+    Value *HandleOp = EmitScalarExpr(E->getArg(0));
+    Value *SamplerOp = EmitScalarExpr(E->getArg(1));
+    Value *CoordOp = EmitScalarExpr(E->getArg(2));
+    Value *CmpOp = EmitScalarExpr(E->getArg(3));
+    if (CmpOp->getType() != Builder.getFloatTy())
+      CmpOp = Builder.CreateFPCast(CmpOp, Builder.getFloatTy());
+
+    SmallVector<Value *, 5> Args;
+    Args.push_back(HandleOp);
+    Args.push_back(SamplerOp);
+    Args.push_back(CoordOp);
+    Args.push_back(CmpOp);
+
+    Args.push_back(emitHlslOffset(*this, E, 4));
+
+    llvm::Type *RetTy = ConvertType(E->getType());
+    return Builder.CreateIntrinsic(
+        RetTy, CGM.getHLSLRuntime().getSampleCmpLevelZeroIntrinsic(), Args);
+  }
   case Builtin::BI__builtin_hlsl_resource_load_with_status:
   case Builtin::BI__builtin_hlsl_resource_load_with_status_typed: {
     Value *HandleOp = EmitScalarExpr(E->getArg(0));

diff  --git a/clang/lib/CodeGen/CGHLSLRuntime.h 
b/clang/lib/CodeGen/CGHLSLRuntime.h
index c13f91afa6a39..62349c9dea7eb 100644
--- a/clang/lib/CodeGen/CGHLSLRuntime.h
+++ b/clang/lib/CodeGen/CGHLSLRuntime.h
@@ -165,6 +165,15 @@ class CGHLSLRuntime {
                                    resource_getpointer)
   GENERATE_HLSL_INTRINSIC_FUNCTION(Sample, resource_sample)
   GENERATE_HLSL_INTRINSIC_FUNCTION(SampleClamp, resource_sample_clamp)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleBias, resource_samplebias)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleBiasClamp, resource_samplebias_clamp)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleGrad, resource_samplegrad)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleGradClamp, resource_samplegrad_clamp)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleLevel, resource_samplelevel)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleCmp, resource_samplecmp)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleCmpClamp, resource_samplecmp_clamp)
+  GENERATE_HLSL_INTRINSIC_FUNCTION(SampleCmpLevelZero,
+                                   resource_samplecmplevelzero)
   GENERATE_HLSL_INTRINSIC_FUNCTION(CreateHandleFromBinding,
                                    resource_handlefrombinding)
   GENERATE_HLSL_INTRINSIC_FUNCTION(CreateHandleFromImplicitBinding,

diff  --git a/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp 
b/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp
index 1dd7fd6fac455..4ef54cf49412f 100644
--- a/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp
+++ b/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp
@@ -1303,21 +1303,15 @@ 
BuiltinTypeDeclBuilder::addByteAddressBufferStoreMethods() {
 BuiltinTypeDeclBuilder &
 BuiltinTypeDeclBuilder::addSampleMethods(ResourceDimension Dim) {
   assert(!Record->isCompleteDefinition() && "record is already complete");
-
   ASTContext &AST = Record->getASTContext();
   QualType ReturnType = getFirstTemplateTypeParam();
-
   QualType SamplerStateType =
       lookupBuiltinType(SemaRef, "SamplerState", Record->getDeclContext());
-
   uint32_t VecSize = getResourceDimensions(Dim);
-
   QualType FloatTy = AST.FloatTy;
   QualType Float2Ty = AST.getExtVectorType(FloatTy, VecSize);
-
   QualType IntTy = AST.IntTy;
   QualType Int2Ty = AST.getExtVectorType(IntTy, VecSize);
-
   using PH = BuiltinTypeMethodBuilder::PlaceHolder;
 
   // T Sample(SamplerState s, float2 location)
@@ -1354,6 +1348,246 @@ 
BuiltinTypeDeclBuilder::addSampleMethods(ResourceDimension Dim) {
       .finalize();
 }
 
+BuiltinTypeDeclBuilder &
+BuiltinTypeDeclBuilder::addSampleBiasMethods(ResourceDimension Dim) {
+  assert(!Record->isCompleteDefinition() && "record is already complete");
+  ASTContext &AST = Record->getASTContext();
+  QualType ReturnType = getFirstTemplateTypeParam();
+  QualType SamplerStateType =
+      lookupBuiltinType(SemaRef, "SamplerState", Record->getDeclContext());
+  uint32_t VecSize = getResourceDimensions(Dim);
+  QualType FloatTy = AST.FloatTy;
+  QualType Float2Ty = AST.getExtVectorType(FloatTy, VecSize);
+  QualType IntTy = AST.IntTy;
+  QualType Int2Ty = AST.getExtVectorType(IntTy, VecSize);
+  using PH = BuiltinTypeMethodBuilder::PlaceHolder;
+
+  // T SampleBias(SamplerState s, float2 location, float bias)
+  BuiltinTypeMethodBuilder(*this, "SampleBias", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("Bias", FloatTy)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_bias", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleBias(SamplerState s, float2 location, float bias, int2 offset)
+  BuiltinTypeMethodBuilder(*this, "SampleBias", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("Bias", FloatTy)
+      .addParam("Offset", Int2Ty)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_bias", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2, PH::_3)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleBias(SamplerState s, float2 location, float bias, int2 offset,
+  // float clamp)
+  return BuiltinTypeMethodBuilder(*this, "SampleBias", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("Bias", FloatTy)
+      .addParam("Offset", Int2Ty)
+      .addParam("Clamp", FloatTy)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_bias", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2, PH::_3, PH::_4)
+      .returnValue(PH::LastStmt)
+      .finalize();
+}
+
+BuiltinTypeDeclBuilder &
+BuiltinTypeDeclBuilder::addSampleGradMethods(ResourceDimension Dim) {
+  assert(!Record->isCompleteDefinition() && "record is already complete");
+  ASTContext &AST = Record->getASTContext();
+  QualType ReturnType = getFirstTemplateTypeParam();
+  QualType SamplerStateType =
+      lookupBuiltinType(SemaRef, "SamplerState", Record->getDeclContext());
+  uint32_t VecSize = getResourceDimensions(Dim);
+  QualType FloatTy = AST.FloatTy;
+  QualType Float2Ty = AST.getExtVectorType(FloatTy, VecSize);
+  QualType IntTy = AST.IntTy;
+  QualType Int2Ty = AST.getExtVectorType(IntTy, VecSize);
+  using PH = BuiltinTypeMethodBuilder::PlaceHolder;
+
+  // T SampleGrad(SamplerState s, float2 location, float2 ddx, float2 ddy)
+  BuiltinTypeMethodBuilder(*this, "SampleGrad", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("DDX", Float2Ty)
+      .addParam("DDY", Float2Ty)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_grad", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2, PH::_3)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleGrad(SamplerState s, float2 location, float2 ddx, float2 ddy,
+  // int2 offset)
+  BuiltinTypeMethodBuilder(*this, "SampleGrad", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("DDX", Float2Ty)
+      .addParam("DDY", Float2Ty)
+      .addParam("Offset", Int2Ty)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_grad", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2, PH::_3, PH::_4)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleGrad(SamplerState s, float2 location, float2 ddx, float2 ddy,
+  // int2 offset, float clamp)
+  return BuiltinTypeMethodBuilder(*this, "SampleGrad", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("DDX", Float2Ty)
+      .addParam("DDY", Float2Ty)
+      .addParam("Offset", Int2Ty)
+      .addParam("Clamp", FloatTy)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_grad", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2, PH::_3, PH::_4,
+                   PH::_5)
+      .returnValue(PH::LastStmt)
+      .finalize();
+}
+
+BuiltinTypeDeclBuilder &
+BuiltinTypeDeclBuilder::addSampleLevelMethods(ResourceDimension Dim) {
+  assert(!Record->isCompleteDefinition() && "record is already complete");
+  ASTContext &AST = Record->getASTContext();
+  QualType ReturnType = getFirstTemplateTypeParam();
+  QualType SamplerStateType =
+      lookupBuiltinType(SemaRef, "SamplerState", Record->getDeclContext());
+  uint32_t VecSize = getResourceDimensions(Dim);
+  QualType FloatTy = AST.FloatTy;
+  QualType Float2Ty = AST.getExtVectorType(FloatTy, VecSize);
+  QualType IntTy = AST.IntTy;
+  QualType Int2Ty = AST.getExtVectorType(IntTy, VecSize);
+  using PH = BuiltinTypeMethodBuilder::PlaceHolder;
+
+  // T SampleLevel(SamplerState s, float2 location, float lod)
+  BuiltinTypeMethodBuilder(*this, "SampleLevel", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("LOD", FloatTy)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_level", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleLevel(SamplerState s, float2 location, float lod, int2 offset)
+  return BuiltinTypeMethodBuilder(*this, "SampleLevel", ReturnType)
+      .addParam("Sampler", SamplerStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("LOD", FloatTy)
+      .addParam("Offset", Int2Ty)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_level", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2, PH::_3)
+      .returnValue(PH::LastStmt)
+      .finalize();
+}
+
+BuiltinTypeDeclBuilder &
+BuiltinTypeDeclBuilder::addSampleCmpMethods(ResourceDimension Dim) {
+  assert(!Record->isCompleteDefinition() && "record is already complete");
+  ASTContext &AST = Record->getASTContext();
+  QualType ReturnType = AST.FloatTy;
+  QualType SamplerComparisonStateType = lookupBuiltinType(
+      SemaRef, "SamplerComparisonState", Record->getDeclContext());
+  uint32_t VecSize = getResourceDimensions(Dim);
+  QualType FloatTy = AST.FloatTy;
+  QualType Float2Ty = AST.getExtVectorType(FloatTy, VecSize);
+  QualType IntTy = AST.IntTy;
+  QualType Int2Ty = AST.getExtVectorType(IntTy, VecSize);
+  using PH = BuiltinTypeMethodBuilder::PlaceHolder;
+
+  // T SampleCmp(SamplerComparisonState s, float2 location, float 
compare_value)
+  BuiltinTypeMethodBuilder(*this, "SampleCmp", ReturnType)
+      .addParam("Sampler", SamplerComparisonStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("CompareValue", FloatTy)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_cmp", ReturnType, 
PH::Handle,
+                   PH::LastStmt, PH::_1, PH::_2)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleCmp(SamplerComparisonState s, float2 location, float 
compare_value,
+  // int2 offset)
+  BuiltinTypeMethodBuilder(*this, "SampleCmp", ReturnType)
+      .addParam("Sampler", SamplerComparisonStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("CompareValue", FloatTy)
+      .addParam("Offset", Int2Ty)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_cmp", ReturnType, 
PH::Handle,
+                   PH::LastStmt, PH::_1, PH::_2, PH::_3)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleCmp(SamplerComparisonState s, float2 location, float 
compare_value,
+  // int2 offset, float clamp)
+  return BuiltinTypeMethodBuilder(*this, "SampleCmp", ReturnType)
+      .addParam("Sampler", SamplerComparisonStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("CompareValue", FloatTy)
+      .addParam("Offset", Int2Ty)
+      .addParam("Clamp", FloatTy)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_cmp", ReturnType, 
PH::Handle,
+                   PH::LastStmt, PH::_1, PH::_2, PH::_3, PH::_4)
+      .returnValue(PH::LastStmt)
+      .finalize();
+}
+
+BuiltinTypeDeclBuilder &
+BuiltinTypeDeclBuilder::addSampleCmpLevelZeroMethods(ResourceDimension Dim) {
+  assert(!Record->isCompleteDefinition() && "record is already complete");
+  ASTContext &AST = Record->getASTContext();
+  QualType ReturnType = AST.FloatTy;
+  QualType SamplerComparisonStateType = lookupBuiltinType(
+      SemaRef, "SamplerComparisonState", Record->getDeclContext());
+  uint32_t VecSize = getResourceDimensions(Dim);
+  QualType FloatTy = AST.FloatTy;
+  QualType Float2Ty = AST.getExtVectorType(FloatTy, VecSize);
+  QualType IntTy = AST.IntTy;
+  QualType Int2Ty = AST.getExtVectorType(IntTy, VecSize);
+  using PH = BuiltinTypeMethodBuilder::PlaceHolder;
+
+  // T SampleCmpLevelZero(SamplerComparisonState s, float2 location, float
+  // compare_value)
+  BuiltinTypeMethodBuilder(*this, "SampleCmpLevelZero", ReturnType)
+      .addParam("Sampler", SamplerComparisonStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("CompareValue", FloatTy)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_cmp_level_zero", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2)
+      .returnValue(PH::LastStmt)
+      .finalize();
+
+  // T SampleCmpLevelZero(SamplerComparisonState s, float2 location, float
+  // compare_value, int2 offset)
+  return BuiltinTypeMethodBuilder(*this, "SampleCmpLevelZero", ReturnType)
+      .addParam("Sampler", SamplerComparisonStateType)
+      .addParam("Location", Float2Ty)
+      .addParam("CompareValue", FloatTy)
+      .addParam("Offset", Int2Ty)
+      .accessHandleFieldOnResource(PH::_0)
+      .callBuiltin("__builtin_hlsl_resource_sample_cmp_level_zero", ReturnType,
+                   PH::Handle, PH::LastStmt, PH::_1, PH::_2, PH::_3)
+      .returnValue(PH::LastStmt)
+      .finalize();
+}
+
 FieldDecl *BuiltinTypeDeclBuilder::getResourceHandleField() const {
   auto I = Fields.find("__handle");
   assert(I != Fields.end() &&

diff  --git a/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.h 
b/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.h
index aa6967e1eb725..fcb61731c5416 100644
--- a/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.h
+++ b/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.h
@@ -95,6 +95,11 @@ class BuiltinTypeDeclBuilder {
   BuiltinTypeDeclBuilder &addByteAddressBufferLoadMethods();
   BuiltinTypeDeclBuilder &addByteAddressBufferStoreMethods();
   BuiltinTypeDeclBuilder &addSampleMethods(ResourceDimension Dim);
+  BuiltinTypeDeclBuilder &addSampleBiasMethods(ResourceDimension Dim);
+  BuiltinTypeDeclBuilder &addSampleGradMethods(ResourceDimension Dim);
+  BuiltinTypeDeclBuilder &addSampleLevelMethods(ResourceDimension Dim);
+  BuiltinTypeDeclBuilder &addSampleCmpMethods(ResourceDimension Dim);
+  BuiltinTypeDeclBuilder &addSampleCmpLevelZeroMethods(ResourceDimension Dim);
   BuiltinTypeDeclBuilder &addIncrementCounterMethod();
   BuiltinTypeDeclBuilder &addDecrementCounterMethod();
   BuiltinTypeDeclBuilder &addHandleAccessFunction(DeclarationName &Name,

diff  --git a/clang/lib/Sema/HLSLExternalSemaSource.cpp 
b/clang/lib/Sema/HLSLExternalSemaSource.cpp
index f7862b3a3f594..662627901539a 100644
--- a/clang/lib/Sema/HLSLExternalSemaSource.cpp
+++ b/clang/lib/Sema/HLSLExternalSemaSource.cpp
@@ -260,7 +260,12 @@ static BuiltinTypeDeclBuilder 
setupTextureType(CXXRecordDecl *Decl, Sema &S,
       .addCopyConstructor()
       .addCopyAssignmentOperator()
       .addStaticInitializationFunctions(false)
-      .addSampleMethods(Dim);
+      .addSampleMethods(Dim)
+      .addSampleBiasMethods(Dim)
+      .addSampleGradMethods(Dim)
+      .addSampleLevelMethods(Dim)
+      .addSampleCmpMethods(Dim)
+      .addSampleCmpLevelZeroMethods(Dim);
 }
 
 // This function is responsible for constructing the constraint expression for

diff  --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index 813ab16fece73..4271056ad43cc 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -3324,6 +3324,127 @@ static bool CheckVectorElementCount(Sema *S, QualType 
PassedType,
   return false;
 }
 
+enum class SampleKind { Sample, Bias, Grad, Level, Cmp, CmpLevelZero };
+
+static bool CheckSamplingBuiltin(Sema &S, CallExpr *TheCall, SampleKind Kind) {
+  unsigned MinArgs, MaxArgs;
+  if (Kind == SampleKind::Sample) {
+    MinArgs = 3;
+    MaxArgs = 5;
+  } else if (Kind == SampleKind::Bias) {
+    MinArgs = 4;
+    MaxArgs = 6;
+  } else if (Kind == SampleKind::Grad) {
+    MinArgs = 5;
+    MaxArgs = 7;
+  } else if (Kind == SampleKind::Level) {
+    MinArgs = 4;
+    MaxArgs = 5;
+  } else if (Kind == SampleKind::Cmp) {
+    MinArgs = 4;
+    MaxArgs = 6;
+  } else {
+    assert(Kind == SampleKind::CmpLevelZero);
+    MinArgs = 4;
+    MaxArgs = 5;
+  }
+
+  if (S.checkArgCountRange(TheCall, MinArgs, MaxArgs))
+    return true;
+
+  // Check the texture handle.
+  if (CheckResourceHandle(&S, TheCall, 0,
+                          [](const HLSLAttributedResourceType *ResType) {
+                            return ResType->getAttrs().ResourceDimension ==
+                                   llvm::dxil::ResourceDimension::Unknown;
+                          }))
+    return true;
+
+  // Check the sampler handle.
+  if (CheckResourceHandle(&S, TheCall, 1,
+                          [](const HLSLAttributedResourceType *ResType) {
+                            return ResType->getAttrs().ResourceClass !=
+                                   llvm::hlsl::ResourceClass::Sampler;
+                          }))
+    return true;
+
+  auto *ResourceTy =
+      TheCall->getArg(0)->getType()->castAs<HLSLAttributedResourceType>();
+
+  // Check the location.
+  unsigned ExpectedDim =
+      getResourceDimensions(ResourceTy->getAttrs().ResourceDimension);
+  if (CheckVectorElementCount(&S, TheCall->getArg(2)->getType(),
+                              S.Context.FloatTy, ExpectedDim,
+                              TheCall->getBeginLoc()))
+    return true;
+
+  unsigned NextIdx = 3;
+  if (Kind == SampleKind::Bias || Kind == SampleKind::Level ||
+      Kind == SampleKind::Cmp || Kind == SampleKind::CmpLevelZero) {
+    // Check the bias, lod level, or compare value, depending on the kind.
+    // All of them must be a scalar float value.
+    QualType BiasOrLODOrCmpTy = TheCall->getArg(NextIdx)->getType();
+    if (!BiasOrLODOrCmpTy->isFloatingType() ||
+        BiasOrLODOrCmpTy->isVectorType()) {
+      S.Diag(TheCall->getArg(NextIdx)->getBeginLoc(),
+             diag::err_typecheck_convert_incompatible)
+          << BiasOrLODOrCmpTy << S.Context.FloatTy << 1 << 0 << 0;
+      return true;
+    }
+    NextIdx++;
+  } else if (Kind == SampleKind::Grad) {
+    // Check the DDX operand.
+    if (CheckVectorElementCount(&S, TheCall->getArg(NextIdx)->getType(),
+                                S.Context.FloatTy, ExpectedDim,
+                                TheCall->getArg(NextIdx)->getBeginLoc()))
+      return true;
+
+    // Check the DDY operand.
+    if (CheckVectorElementCount(&S, TheCall->getArg(NextIdx + 1)->getType(),
+                                S.Context.FloatTy, ExpectedDim,
+                                TheCall->getArg(NextIdx + 1)->getBeginLoc()))
+      return true;
+    NextIdx += 2;
+  }
+
+  // Check the offset operand.
+  if (TheCall->getNumArgs() > NextIdx) {
+    if (CheckVectorElementCount(&S, TheCall->getArg(NextIdx)->getType(),
+                                S.Context.IntTy, ExpectedDim,
+                                TheCall->getArg(NextIdx)->getBeginLoc()))
+      return true;
+    NextIdx++;
+  }
+
+  // Check the clamp operand.
+  if (Kind != SampleKind::Level && Kind != SampleKind::CmpLevelZero &&
+      TheCall->getNumArgs() > NextIdx) {
+    QualType ClampTy = TheCall->getArg(NextIdx)->getType();
+    if (!ClampTy->isFloatingType() || ClampTy->isVectorType()) {
+      S.Diag(TheCall->getArg(NextIdx)->getBeginLoc(),
+             diag::err_typecheck_convert_incompatible)
+          << ClampTy << S.Context.FloatTy << 1 << 0 << 0;
+      return true;
+    }
+  }
+
+  assert(ResourceTy->hasContainedType() &&
+         "Expecting a contained type for resource with a dimension "
+         "attribute.");
+  QualType ReturnType = ResourceTy->getContainedType();
+  if (Kind == SampleKind::Cmp || Kind == SampleKind::CmpLevelZero) {
+    if (!ReturnType->hasFloatingRepresentation()) {
+      S.Diag(TheCall->getBeginLoc(), diag::err_hlsl_samplecmp_requires_float);
+      return true;
+    }
+    ReturnType = S.Context.FloatTy;
+  }
+  TheCall->setType(ReturnType);
+
+  return false;
+}
+
 // Note: returning true in this case results in CheckBuiltinFunctionCall
 // returning an ExprError
 bool SemaHLSL::CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) 
{
@@ -3444,59 +3565,18 @@ bool SemaHLSL::CheckBuiltinFunctionCall(unsigned 
BuiltinID, CallExpr *TheCall) {
 
     break;
   }
-  case Builtin::BI__builtin_hlsl_resource_sample: {
-    if (SemaRef.checkArgCountRange(TheCall, 3, 5))
-      return true;
-
-    if (CheckResourceHandle(&SemaRef, TheCall, 0,
-                            [](const HLSLAttributedResourceType *ResType) {
-                              return ResType->getAttrs().ResourceDimension ==
-                                     llvm::dxil::ResourceDimension::Unknown;
-                            }))
-      return true;
-
-    if (CheckResourceHandle(&SemaRef, TheCall, 1,
-                            [](const HLSLAttributedResourceType *ResType) {
-                              return ResType->getAttrs().ResourceClass !=
-                                     llvm::hlsl::ResourceClass::Sampler;
-                            }))
-      return true;
-
-    auto *ResourceTy =
-        TheCall->getArg(0)->getType()->castAs<HLSLAttributedResourceType>();
-
-    unsigned ExpectedDim =
-        getResourceDimensions(ResourceTy->getAttrs().ResourceDimension);
-    if (CheckVectorElementCount(&SemaRef, TheCall->getArg(2)->getType(),
-                                SemaRef.Context.FloatTy, ExpectedDim,
-                                TheCall->getArg(2)->getBeginLoc()))
-      return true;
-
-    if (TheCall->getNumArgs() > 3) {
-      if (CheckVectorElementCount(&SemaRef, TheCall->getArg(3)->getType(),
-                                  SemaRef.Context.IntTy, ExpectedDim,
-                                  TheCall->getArg(3)->getBeginLoc()))
-        return true;
-    }
-
-    if (TheCall->getNumArgs() > 4) {
-      QualType ClampTy = TheCall->getArg(4)->getType();
-      if (!ClampTy->isFloatingType() || ClampTy->isVectorType()) {
-        SemaRef.Diag(TheCall->getArg(4)->getBeginLoc(),
-                     diag::err_typecheck_convert_incompatible)
-            << ClampTy << SemaRef.Context.FloatTy << 1 << 0 << 0;
-        return true;
-      }
-    }
-
-    assert(ResourceTy->hasContainedType() &&
-           "Expecting a contained type for resource with a dimension "
-           "attribute.");
-    QualType ReturnType = ResourceTy->getContainedType();
-    TheCall->setType(ReturnType);
-
-    break;
-  }
+  case Builtin::BI__builtin_hlsl_resource_sample:
+    return CheckSamplingBuiltin(SemaRef, TheCall, SampleKind::Sample);
+  case Builtin::BI__builtin_hlsl_resource_sample_bias:
+    return CheckSamplingBuiltin(SemaRef, TheCall, SampleKind::Bias);
+  case Builtin::BI__builtin_hlsl_resource_sample_grad:
+    return CheckSamplingBuiltin(SemaRef, TheCall, SampleKind::Grad);
+  case Builtin::BI__builtin_hlsl_resource_sample_level:
+    return CheckSamplingBuiltin(SemaRef, TheCall, SampleKind::Level);
+  case Builtin::BI__builtin_hlsl_resource_sample_cmp:
+    return CheckSamplingBuiltin(SemaRef, TheCall, SampleKind::Cmp);
+  case Builtin::BI__builtin_hlsl_resource_sample_cmp_level_zero:
+    return CheckSamplingBuiltin(SemaRef, TheCall, SampleKind::CmpLevelZero);
   case Builtin::BI__builtin_hlsl_resource_uninitializedhandle: {
     assert(TheCall->getNumArgs() == 1 && "expected 1 arg");
     // Update return type to be the attributed resource type from arg0.

diff  --git a/clang/test/AST/HLSL/Texture2D-AST.hlsl 
b/clang/test/AST/HLSL/Texture2D-AST.hlsl
index 95343712b72fa..abdf0a8b35ab7 100644
--- a/clang/test/AST/HLSL/Texture2D-AST.hlsl
+++ b/clang/test/AST/HLSL/Texture2D-AST.hlsl
@@ -5,6 +5,11 @@
 // CHECK-NEXT: FieldDecl {{.*}} implicit {{.*}} __handle '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
 
+// CHECK: CXXRecordDecl {{.*}} SamplerComparisonState definition
+// CHECK: FinalAttr {{.*}} Implicit final
+// CHECK-NEXT: FieldDecl {{.*}} implicit {{.*}} __handle '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+
 // CHECK: ClassTemplateDecl {{.*}} Texture2D
 // CHECK: TemplateTypeParmDecl {{.*}} element_type
 // CHECK: CXXRecordDecl {{.*}} Texture2D definition
@@ -83,11 +88,352 @@
 // CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'Clamp' 'float'
 // CHECK-NEXT: AlwaysInlineAttr
 
+// CHECK: CXXMethodDecl {{.*}} SampleBias 'element_type (hlsl::SamplerState, 
vector<float, 2>, float)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Bias 'float'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_bias' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'Bias' 'float'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleBias 'element_type (hlsl::SamplerState, 
vector<float, 2>, float, vector<int, 2>)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Bias 'float'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_bias' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'Bias' 'float'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleBias 'element_type (hlsl::SamplerState, 
vector<float, 2>, float, vector<int, 2>, float)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Bias 'float'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Clamp 'float'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_bias' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'Bias' 'float'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'Clamp' 'float'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleGrad 'element_type (hlsl::SamplerState, 
vector<float, 2>, vector<float, 2>, vector<float, 2>)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} DDX 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} DDY 'vector<float, 2>'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_grad' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'DDX' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'DDY' 'vector<float, 2>'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleGrad 'element_type (hlsl::SamplerState, 
vector<float, 2>, vector<float, 2>, vector<float, 2>, vector<int, 2>)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} DDX 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} DDY 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_grad' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'DDX' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'DDY' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleGrad 'element_type (hlsl::SamplerState, 
vector<float, 2>, vector<float, 2>, vector<float, 2>, vector<int, 2>, float)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} DDX 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} DDY 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Clamp 'float'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_grad' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'DDX' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'DDY' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'Clamp' 'float'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleLevel 'element_type (hlsl::SamplerState, 
vector<float, 2>, float)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} LOD 'float'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_level' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'LOD' 'float'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleLevel 'element_type (hlsl::SamplerState, 
vector<float, 2>, float, vector<int, 2>)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} LOD 'float'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'element_type' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_level' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerState' lvalue ParmVar {{.*}} 
'Sampler' 'hlsl::SamplerState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'LOD' 'float'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleCmp 'float (hlsl::SamplerComparisonState, 
vector<float, 2>, float)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} CompareValue 'float'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'float' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_cmp' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerComparisonState' lvalue 
ParmVar {{.*}} 'Sampler' 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'CompareValue' 
'float'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleCmp 'float (hlsl::SamplerComparisonState, 
vector<float, 2>, float, vector<int, 2>)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} CompareValue 'float'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'float' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_cmp' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerComparisonState' lvalue 
ParmVar {{.*}} 'Sampler' 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'CompareValue' 
'float'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleCmp 'float (hlsl::SamplerComparisonState, 
vector<float, 2>, float, vector<int, 2>, float)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} CompareValue 'float'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} Clamp 'float'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'float' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_cmp' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerComparisonState' lvalue 
ParmVar {{.*}} 'Sampler' 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'CompareValue' 
'float'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'Clamp' 'float'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleCmpLevelZero 'float 
(hlsl::SamplerComparisonState, vector<float, 2>, float)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} CompareValue 'float'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'float' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_cmp_level_zero' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerComparisonState' lvalue 
ParmVar {{.*}} 'Sampler' 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'CompareValue' 
'float'
+// CHECK-NEXT: AlwaysInlineAttr
+
+// CHECK: CXXMethodDecl {{.*}} SampleCmpLevelZero 'float 
(hlsl::SamplerComparisonState, vector<float, 2>, float, vector<int, 2>)'
+// CHECK-NEXT: ParmVarDecl {{.*}} Sampler 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: ParmVarDecl {{.*}} Location 'vector<float, 2>'
+// CHECK-NEXT: ParmVarDecl {{.*}} CompareValue 'float'
+// CHECK-NEXT: ParmVarDecl {{.*}} Offset 'vector<int, 2>'
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: ReturnStmt
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'float' <Dependent>
+// CHECK-NEXT: CallExpr {{.*}} '<dependent type>'
+// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} 
'__builtin_hlsl_resource_sample_cmp_level_zero' 'void (...) noexcept'
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-SAME{LITERAL}: [[hlsl::resource_dimension(2D)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::Texture2D<element_type>' lvalue 
implicit this
+// CHECK-NEXT: MemberExpr {{.*}} '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
+// CHECK-SAME: ' lvalue .__handle
+// CHECK-NEXT: DeclRefExpr {{.*}} 'hlsl::SamplerComparisonState' lvalue 
ParmVar {{.*}} 'Sampler' 'hlsl::SamplerComparisonState'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<float, 2>' lvalue ParmVar {{.*}} 
'Location' 'vector<float, 2>'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'float' lvalue ParmVar {{.*}} 'CompareValue' 
'float'
+// CHECK-NEXT: DeclRefExpr {{.*}} 'vector<int, 2>' lvalue ParmVar {{.*}} 
'Offset' 'vector<int, 2>'
+// CHECK-NEXT: AlwaysInlineAttr
+
 Texture2D<float4> t;
 SamplerState s;
+SamplerComparisonState scs;
 
-void main(float2 loc) {
+void main(float2 loc, float cmp) {
   t.Sample(s, loc);
   t.Sample(s, loc, int2(1, 2));
   t.Sample(s, loc, int2(1, 2), 1.0);
-}
\ No newline at end of file
+  t.SampleBias(s, loc, 0.0);
+  t.SampleBias(s, loc, 0.0, int2(1, 2));
+  t.SampleBias(s, loc, 0.0, int2(1, 2), 1.0);
+  t.SampleGrad(s, loc, float2(0,0), float2(0,0));
+  t.SampleGrad(s, loc, float2(0,0), float2(0,0), int2(1, 2));
+  t.SampleGrad(s, loc, float2(0,0), float2(0,0), int2(1, 2), 1.0);
+  t.SampleLevel(s, loc, 0.0);
+  t.SampleLevel(s, loc, 0.0, int2(1, 2));
+  t.SampleCmp(scs, loc, cmp);
+  t.SampleCmp(scs, loc, cmp, int2(1, 2));
+  t.SampleCmp(scs, loc, cmp, int2(1, 2), 1.0f);
+  t.SampleCmpLevelZero(scs, loc, cmp);
+  t.SampleCmpLevelZero(scs, loc, cmp, int2(1, 2));
+}

diff  --git a/clang/test/CodeGenHLSL/resources/Texture2D.sample.hlsl 
b/clang/test/CodeGenHLSL/resources/Texture2D-Sample.hlsl
similarity index 100%
rename from clang/test/CodeGenHLSL/resources/Texture2D.sample.hlsl
rename to clang/test/CodeGenHLSL/resources/Texture2D-Sample.hlsl

diff  --git a/clang/test/CodeGenHLSL/resources/Texture2D-SampleBias.hlsl 
b/clang/test/CodeGenHLSL/resources/Texture2D-SampleBias.hlsl
new file mode 100644
index 0000000000000..c138e7f0a6c8b
--- /dev/null
+++ b/clang/test/CodeGenHLSL/resources/Texture2D-SampleBias.hlsl
@@ -0,0 +1,66 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,DXIL
+// RUN: %clang_cc1 -triple spirv-vulkan-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,SPIRV
+
+// DXIL: %"class.hlsl::Texture2D" = type { target("dx.Texture", <4 x float>, 
0, 0, 0, 2) }
+// DXIL: %"class.hlsl::SamplerState" = type { target("dx.Sampler", 0) }
+
+// SPIRV: %"class.hlsl::Texture2D" = type { target("spirv.Image", float, 1, 2, 
0, 0, 1, 0) }
+// SPIRV: %"class.hlsl::SamplerState" = type { target("spirv.Sampler") }
+
+Texture2D<float4> t;
+SamplerState s;
+
+// CHECK-LABEL: @test_bias(float vector[2])
+// CHECK: %[[CALL:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleBias(hlsl::SamplerState, float vector[2], float)(ptr {{.*}} 
@t, ptr {{.*}} byval(%"class.hlsl::SamplerState") {{.*}}, <2 x float> {{.*}} 
%{{.*}}, float {{.*}} 0.000000e+00)
+// CHECK: ret <4 x float> %[[CALL]]
+
+float4 test_bias(float2 loc : LOC) : SV_Target {
+  return t.SampleBias(s, loc, 0.0f);
+}
+
+// CHECK-LABEL: define linkonce_odr {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleBias(hlsl::SamplerState, float vector[2], float)(
+// CHECK: %[[THIS_VAL1:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL1]], i32 0, i32 0
+// CHECK: %[[HANDLE1:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP1]]
+// CHECK: %[[SAMPLER_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %{{.*}}, i32 0, i32 0
+// CHECK: %[[SAMPLER_H1:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP1]]
+// CHECK: %[[BIAS_CAST1:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: %{{.*}} = call {{.*}} <4 x float> 
@llvm.dx.resource.samplebias.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE1]], target("dx.Sampler", 0) 
%[[SAMPLER_H1]], <2 x float> %{{.*}}, float %[[BIAS_CAST1]], <2 x i32> 
zeroinitializer)
+// SPIRV: %{{.*}} = call {{.*}} <4 x float> 
@llvm.spv.resource.samplebias.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE1]], target("spirv.Sampler") 
%[[SAMPLER_H1]], <2 x float> %{{.*}}, float %[[BIAS_CAST1]], <2 x i32> 
zeroinitializer)
+
+// CHECK-LABEL: @test_offset(float vector[2])
+// CHECK: %[[CALL_OFFSET:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleBias(hlsl::SamplerState, float vector[2], float, int 
vector[2])(ptr {{.*}} @t, ptr {{.*}} byval(%"class.hlsl::SamplerState") {{.*}}, 
<2 x float> {{.*}} %{{.*}}, float {{.*}} 0.000000e+00, <2 x i32> noundef <i32 
1, i32 2>)
+// CHECK: ret <4 x float> %[[CALL_OFFSET]]
+
+float4 test_offset(float2 loc : LOC) : SV_Target {
+  return t.SampleBias(s, loc, 0.0f, int2(1, 2));
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} <4 x float> 
@hlsl::Texture2D<float vector[4]>::SampleBias(hlsl::SamplerState, float 
vector[2], float, int vector[2])(
+// CHECK: %[[THIS_VAL2:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL2]], i32 0, i32 0
+// CHECK: %[[HANDLE2:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP2]]
+// CHECK: %[[SAMPLER_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %{{.*}}, i32 0, i32 0
+// CHECK: %[[SAMPLER_H2:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP2]]
+// CHECK: %[[BIAS_CAST2:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: %{{.*}} = call {{.*}} <4 x float> 
@llvm.dx.resource.samplebias.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE2]], target("dx.Sampler", 0) 
%[[SAMPLER_H2]], <2 x float> %{{.*}}, float %[[BIAS_CAST2]], <2 x i32> %{{.*}})
+// SPIRV: %{{.*}} = call {{.*}} <4 x float> 
@llvm.spv.resource.samplebias.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE2]], target("spirv.Sampler") 
%[[SAMPLER_H2]], <2 x float> %{{.*}}, float %[[BIAS_CAST2]], <2 x i32> %{{.*}})
+
+// CHECK-LABEL: @test_clamp(float vector[2])
+// CHECK: %[[CALL_CLAMP:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleBias(hlsl::SamplerState, float vector[2], float, int 
vector[2], float)(ptr {{.*}} @t, ptr {{.*}} byval(%"class.hlsl::SamplerState") 
{{.*}}, <2 x float> {{.*}} %{{.*}}, float {{.*}} 0.000000e+00, <2 x i32> 
noundef <i32 1, i32 2>, float {{.*}} 1.000000e+00)
+// CHECK: ret <4 x float> %[[CALL_CLAMP]]
+
+float4 test_clamp(float2 loc : LOC) : SV_Target {
+  return t.SampleBias(s, loc, 0.0f, int2(1, 2), 1.0f);
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} <4 x float> 
@hlsl::Texture2D<float vector[4]>::SampleBias(hlsl::SamplerState, float 
vector[2], float, int vector[2], float)(
+// CHECK: %[[THIS_VAL3:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP3:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL3]], i32 0, i32 0
+// CHECK: %[[HANDLE3:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP3]]
+// CHECK: %[[SAMPLER_GEP3:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %{{.*}}, i32 0, i32 0
+// CHECK: %[[SAMPLER_H3:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP3]]
+// CHECK: %[[BIAS_CAST3:.*]] = fptrunc {{.*}} double {{.*}} to float
+// CHECK: %[[CLAMP_CAST3:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: %{{.*}} = call {{.*}} <4 x float> 
@llvm.dx.resource.samplebias.clamp.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE3]], target("dx.Sampler", 0) 
%[[SAMPLER_H3]], <2 x float> %{{.*}}, float %[[BIAS_CAST3]], <2 x i32> %{{.*}}, 
float %[[CLAMP_CAST3]])
+// SPIRV: %{{.*}} = call {{.*}} <4 x float> 
@llvm.spv.resource.samplebias.clamp.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE3]], target("spirv.Sampler") 
%[[SAMPLER_H3]], <2 x float> %{{.*}}, float %[[BIAS_CAST3]], <2 x i32> %{{.*}}, 
float %[[CLAMP_CAST3]])

diff  --git a/clang/test/CodeGenHLSL/resources/Texture2D-SampleCmp.hlsl 
b/clang/test/CodeGenHLSL/resources/Texture2D-SampleCmp.hlsl
new file mode 100644
index 0000000000000..b76b02177abbc
--- /dev/null
+++ b/clang/test/CodeGenHLSL/resources/Texture2D-SampleCmp.hlsl
@@ -0,0 +1,78 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,DXIL
+// RUN: %clang_cc1 -triple spirv-vulkan-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,SPIRV
+
+// DXIL: %"class.hlsl::Texture2D" = type { target("dx.Texture", <4 x float>, 
0, 0, 0, 2) }
+// DXIL: %"class.hlsl::SamplerComparisonState" = type { target("dx.Sampler", 
0) }
+
+// SPIRV: %"class.hlsl::Texture2D" = type { target("spirv.Image", float, 1, 2, 
0, 0, 1, 0) }
+// SPIRV: %"class.hlsl::SamplerComparisonState" = type { 
target("spirv.Sampler") }
+
+Texture2D<float4> t;
+SamplerComparisonState s;
+
+// CHECK-LABEL: @test_cmp(float vector[2], float)
+// CHECK: %[[CALL:.*]] = call {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmp(hlsl::SamplerComparisonState, float vector[2], float)(ptr 
{{.*}} @t, ptr {{.*}} byval(%"class.hlsl::SamplerComparisonState") {{.*}}, <2 x 
float> {{.*}} %{{.*}}, float {{.*}} 0.000000e+00)
+// CHECK: ret float %[[CALL]]
+
+float test_cmp(float2 loc : LOC, float cmp : CMP) : SV_Target {
+  return t.SampleCmp(s, loc, 0.0f);
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmp(hlsl::SamplerComparisonState, float vector[2], float)(
+// CHECK-SAME: ptr noundef nonnull {{.*}} %[[THIS1:[^,]+]], ptr noundef 
byval(%"class.hlsl::SamplerComparisonState") {{.*}} %[[SAMPLER1:[^,]+]], <2 x 
float> noundef nofpclass(nan inf) %[[COORD1:[^,]+]], float noundef 
nofpclass(nan inf) %[[CMP1:[^)]+]])
+// CHECK: %[[THIS_VAL1:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL1]], i32 0, i32 0
+// CHECK: %[[HANDLE1:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP1]]
+// CHECK: %[[SAMPLER_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerComparisonState", ptr %[[SAMPLER1]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H1:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP1]]
+// CHECK: %[[COORD_VAL1:.*]] = load <2 x float>, ptr %{{.*}}
+// CHECK: %[[CMP_VAL1:.*]] = load float, ptr %{{.*}}
+// CHECK: %[[CMP_CAST1:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: call {{.*}} float 
@llvm.dx.resource.samplecmp.f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE1]], target("dx.Sampler", 0) 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL1]], float %[[CMP_CAST1]], <2 x i32> 
zeroinitializer)
+// SPIRV: call {{.*}} float 
@llvm.spv.resource.samplecmp.f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE1]], target("spirv.Sampler") 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL1]], float %[[CMP_CAST1]], <2 x i32> 
zeroinitializer)
+
+// CHECK-LABEL: @test_offset(float vector[2], float)
+// CHECK: %[[CALL_OFFSET:.*]] = call {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmp(hlsl::SamplerComparisonState, float vector[2], float, int 
vector[2])(ptr {{.*}} @t, ptr {{.*}} 
byval(%"class.hlsl::SamplerComparisonState") {{.*}}, <2 x float> {{.*}} 
%{{.*}}, float {{.*}} 0.000000e+00, <2 x i32> noundef <i32 1, i32 2>)
+// CHECK: ret float %[[CALL_OFFSET]]
+
+float test_offset(float2 loc : LOC, float cmp : CMP) : SV_Target {
+  return t.SampleCmp(s, loc, 0.0f, int2(1, 2));
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmp(hlsl::SamplerComparisonState, float vector[2], float, int 
vector[2])(
+// CHECK-SAME: ptr noundef nonnull {{.*}} %[[THIS2:[^,]+]], ptr noundef 
byval(%"class.hlsl::SamplerComparisonState") {{.*}} %[[SAMPLER2:[^,]+]], <2 x 
float> noundef nofpclass(nan inf) %[[COORD2:[^,]+]], float noundef 
nofpclass(nan inf) %[[CMP2:[^,]+]], <2 x i32> noundef %[[OFFSET2:[^)]+]])
+// CHECK: %[[THIS_VAL2:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL2]], i32 0, i32 0
+// CHECK: %[[HANDLE2:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP2]]
+// CHECK: %[[SAMPLER_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerComparisonState", ptr %[[SAMPLER2]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H2:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP2]]
+// CHECK: %[[COORD_VAL2:.*]] = load <2 x float>, ptr %{{.*}}
+// CHECK: %[[CMP_VAL2:.*]] = load float, ptr %{{.*}}
+// CHECK: %[[CMP_CAST2:.*]] = fptrunc {{.*}} double {{.*}} to float
+// CHECK: %[[OFFSET_VAL2:.*]] = load <2 x i32>, ptr %{{.*}}
+// DXIL: call {{.*}} float 
@llvm.dx.resource.samplecmp.f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE2]], target("dx.Sampler", 0) 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL2]], float %[[CMP_CAST2]], <2 x i32> 
%[[OFFSET_VAL2]])
+// SPIRV: call {{.*}} float 
@llvm.spv.resource.samplecmp.f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE2]], target("spirv.Sampler") 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL2]], float %[[CMP_CAST2]], <2 x i32> 
%[[OFFSET_VAL2]])
+
+// CHECK-LABEL: @test_clamp(float vector[2], float)
+// CHECK: %[[CALL_CLAMP:.*]] = call {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmp(hlsl::SamplerComparisonState, float vector[2], float, int 
vector[2], float)(ptr {{.*}} @t, ptr {{.*}} 
byval(%"class.hlsl::SamplerComparisonState") {{.*}}, <2 x float> {{.*}} 
%{{.*}}, float {{.*}} 0.000000e+00, <2 x i32> noundef <i32 1, i32 2>, float 
{{.*}} 1.000000e+00)
+// CHECK: ret float %[[CALL_CLAMP]]
+
+float test_clamp(float2 loc : LOC, float cmp : CMP) : SV_Target {
+  return t.SampleCmp(s, loc, 0.0f, int2(1, 2), 1.0f);
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmp(hlsl::SamplerComparisonState, float vector[2], float, int 
vector[2], float)(
+// CHECK-SAME: ptr noundef nonnull {{.*}} %[[THIS3:[^,]+]], ptr noundef 
byval(%"class.hlsl::SamplerComparisonState") {{.*}} %[[SAMPLER3:[^,]+]], <2 x 
float> noundef nofpclass(nan inf) %[[COORD3:[^,]+]], float noundef 
nofpclass(nan inf) %[[CMP3:[^,]+]], <2 x i32> noundef %[[OFFSET3:[^,]+]], float 
noundef nofpclass(nan inf) %[[CLAMP3:[^)]+]])
+// CHECK: %[[THIS_VAL3:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP3:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL3]], i32 0, i32 0
+// CHECK: %[[HANDLE3:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP3]]
+// CHECK: %[[SAMPLER_GEP3:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerComparisonState", ptr %[[SAMPLER3]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H3:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP3]]
+// CHECK: %[[COORD_VAL3:.*]] = load <2 x float>, ptr %{{.*}}
+// CHECK: %[[CMP_VAL3:.*]] = load float, ptr %{{.*}}
+// CHECK: %[[CMP_CAST3:.*]] = fptrunc {{.*}} double {{.*}} to float
+// CHECK: %[[OFFSET_VAL3:.*]] = load <2 x i32>, ptr %{{.*}}
+// CHECK: %[[CLAMP_VAL3:.*]] = load float, ptr %{{.*}}
+// CHECK: %[[CLAMP_CAST3:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: call {{.*}} float 
@llvm.dx.resource.samplecmp.clamp.f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE3]], target("dx.Sampler", 0) 
%[[SAMPLER_H3]], <2 x float> %[[COORD_VAL3]], float %[[CMP_CAST3]], <2 x i32> 
%[[OFFSET_VAL3]], float %[[CLAMP_CAST3]])
+// SPIRV: call {{.*}} float 
@llvm.spv.resource.samplecmp.clamp.f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE3]], target("spirv.Sampler") 
%[[SAMPLER_H3]], <2 x float> %[[COORD_VAL3]], float %[[CMP_CAST3]], <2 x i32> 
%[[OFFSET_VAL3]], float %[[CLAMP_CAST3]])

diff  --git 
a/clang/test/CodeGenHLSL/resources/Texture2D-SampleCmpLevelZero.hlsl 
b/clang/test/CodeGenHLSL/resources/Texture2D-SampleCmpLevelZero.hlsl
new file mode 100644
index 0000000000000..224e9d3837374
--- /dev/null
+++ b/clang/test/CodeGenHLSL/resources/Texture2D-SampleCmpLevelZero.hlsl
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,DXIL
+// RUN: %clang_cc1 -triple spirv-vulkan-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,SPIRV
+
+Texture2D<float4> t;
+SamplerComparisonState s;
+
+// CHECK-LABEL: @test_cmp_level_zero(float vector[2], float)
+// CHECK: %[[CALL:.*]] = call {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmpLevelZero(hlsl::SamplerComparisonState, float vector[2], 
float)(ptr {{.*}} @t, ptr {{.*}} byval(%"class.hlsl::SamplerComparisonState") 
{{.*}}, <2 x float> {{.*}} %{{.*}}, float {{.*}} 0.000000e+00)
+// CHECK: ret float %[[CALL]]
+
+float test_cmp_level_zero(float2 loc : LOC, float cmp : CMP) : SV_Target {
+  return t.SampleCmpLevelZero(s, loc, 0.0f);
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmpLevelZero(hlsl::SamplerComparisonState, float vector[2], 
float)(
+// CHECK-SAME: ptr noundef nonnull {{.*}} %[[THIS1:[^,]+]], ptr noundef 
byval(%"class.hlsl::SamplerComparisonState") {{.*}} %[[SAMPLER1:[^,]+]], <2 x 
float> noundef nofpclass(nan inf) %[[COORD1:[^,]+]], float noundef 
nofpclass(nan inf) %[[CMP1:[^)]+]])
+// CHECK: %[[THIS_VAL1:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL1]], i32 0, i32 0
+// CHECK: %[[HANDLE1:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP1]]
+// CHECK: %[[SAMPLER_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerComparisonState", ptr %[[SAMPLER1]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H1:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP1]]
+// CHECK: %[[COORD_VAL1:.*]] = load <2 x float>, ptr %{{.*}}
+// CHECK: %[[CMP_VAL1:.*]] = load float, ptr %{{.*}}
+// CHECK: %[[CMP_CAST1:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: call {{.*}} float 
@llvm.dx.resource.samplecmplevelzero.f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE1]], target("dx.Sampler", 0) 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL1]], float %[[CMP_CAST1]], <2 x i32> 
zeroinitializer)
+// SPIRV: call {{.*}} float 
@llvm.spv.resource.samplecmplevelzero.f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE1]], target("spirv.Sampler") 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL1]], float %[[CMP_CAST1]], <2 x i32> 
zeroinitializer)
+
+// CHECK-LABEL: @test_cmp_level_zero_offset(float vector[2], float)
+// CHECK: %[[CALL_OFFSET:.*]] = call {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmpLevelZero(hlsl::SamplerComparisonState, float vector[2], 
float, int vector[2])(ptr {{.*}} @t, ptr {{.*}} 
byval(%"class.hlsl::SamplerComparisonState") {{.*}}, <2 x float> {{.*}} 
%{{.*}}, float {{.*}} 0.000000e+00, <2 x i32> noundef <i32 1, i32 2>)
+// CHECK: ret float %[[CALL_OFFSET]]
+
+float test_cmp_level_zero_offset(float2 loc : LOC, float cmp : CMP) : 
SV_Target {
+  return t.SampleCmpLevelZero(s, loc, 0.0f, int2(1, 2));
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} float @hlsl::Texture2D<float 
vector[4]>::SampleCmpLevelZero(hlsl::SamplerComparisonState, float vector[2], 
float, int vector[2])(
+// CHECK-SAME: ptr noundef nonnull {{.*}} %[[THIS2:[^,]+]], ptr noundef 
byval(%"class.hlsl::SamplerComparisonState") {{.*}} %[[SAMPLER2:[^,]+]], <2 x 
float> noundef nofpclass(nan inf) %[[COORD2:[^,]+]], float noundef 
nofpclass(nan inf) %[[CMP2:[^,]+]], <2 x i32> noundef %[[OFFSET2:[^)]+]])
+// CHECK: %[[THIS_VAL2:.*]] = load ptr, ptr %{{.*}}
+// CHECK: %[[HANDLE_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL2]], i32 0, i32 0
+// CHECK: %[[HANDLE2:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP2]]
+// CHECK: %[[SAMPLER_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerComparisonState", ptr %[[SAMPLER2]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H2:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP2]]
+// CHECK: %[[COORD_VAL2:.*]] = load <2 x float>, ptr %{{.*}}
+// CHECK: %[[CMP_VAL2:.*]] = load float, ptr %{{.*}}
+// CHECK: %[[CMP_CAST2:.*]] = fptrunc {{.*}} double {{.*}} to float
+// CHECK: %[[OFFSET_VAL2:.*]] = load <2 x i32>, ptr %{{.*}}
+// DXIL: call {{.*}} float 
@llvm.dx.resource.samplecmplevelzero.f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE2]], target("dx.Sampler", 0) 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL2]], float %[[CMP_CAST2]], <2 x i32> 
%[[OFFSET_VAL2]])
+// SPIRV: call {{.*}} float 
@llvm.spv.resource.samplecmplevelzero.f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE2]], target("spirv.Sampler") 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL2]], float %[[CMP_CAST2]], <2 x i32> 
%[[OFFSET_VAL2]])

diff  --git a/clang/test/CodeGenHLSL/resources/Texture2D-SampleGrad.hlsl 
b/clang/test/CodeGenHLSL/resources/Texture2D-SampleGrad.hlsl
new file mode 100644
index 0000000000000..279521c0bb988
--- /dev/null
+++ b/clang/test/CodeGenHLSL/resources/Texture2D-SampleGrad.hlsl
@@ -0,0 +1,108 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,DXIL
+// RUN: %clang_cc1 -triple spirv-vulkan-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,SPIRV
+
+// DXIL: %"class.hlsl::Texture2D" = type { target("dx.Texture", <4 x float>, 
0, 0, 0, 2) }
+// DXIL: %"class.hlsl::SamplerState" = type { target("dx.Sampler", 0) }
+
+// SPIRV: %"class.hlsl::Texture2D" = type { target("spirv.Image", float, 1, 2, 
0, 0, 1, 0) }
+// SPIRV: %"class.hlsl::SamplerState" = type { target("spirv.Sampler") }
+
+Texture2D<float4> t;
+SamplerState s;
+
+// CHECK-LABEL: @test_grad(float vector[2], float vector[2], float vector[2])
+// CHECK: %[[CALL:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleGrad(hlsl::SamplerState, float vector[2], float vector[2], 
float vector[2])(ptr {{.*}} @t, ptr {{.*}} byval(%"class.hlsl::SamplerState") 
{{.*}}, <2 x float> {{.*}} %{{.*}}, <2 x float> {{.*}} %{{.*}}, <2 x float> 
{{.*}} %{{.*}})
+// CHECK: ret <4 x float> %[[CALL]]
+
+float4 test_grad(float2 loc : LOC, float2 ddx : DDX, float2 ddy : DDY) : 
SV_Target {
+  return t.SampleGrad(s, loc, ddx, ddy);
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} <4 x float> 
@hlsl::Texture2D<float vector[4]>::SampleGrad(hlsl::SamplerState, float 
vector[2], float vector[2], float vector[2])(
+// CHECK-SAME: ptr {{.*}} %[[THIS:[^,]+]], ptr {{.*}} 
byval(%"class.hlsl::SamplerState") {{.*}} %[[SAMPLER:[^,]+]], <2 x float> 
{{.*}} %[[COORD:[^,]+]], <2 x float> {{.*}} %[[DDX:[^,]+]], <2 x float> {{.*}} 
%[[DDY:[^)]+]])
+// CHECK: %[[THIS_ADDR:.*]] = alloca ptr
+// CHECK: %[[COORD_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[DDX_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[DDY_ADDR:.*]] = alloca <2 x float>
+// CHECK: store ptr %[[THIS]], ptr %[[THIS_ADDR]]
+// CHECK: store <2 x float> %[[COORD]], ptr %[[COORD_ADDR]]
+// CHECK: store <2 x float> %[[DDX]], ptr %[[DDX_ADDR]]
+// CHECK: store <2 x float> %[[DDY]], ptr %[[DDY_ADDR]]
+// CHECK: %[[THIS_VAL1:.*]] = load ptr, ptr %[[THIS_ADDR]]
+// CHECK: %[[HANDLE_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL1]], i32 0, i32 0
+// CHECK: %[[HANDLE1:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP1]]
+// CHECK: %[[SAMPLER_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %[[SAMPLER]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H1:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP1]]
+// CHECK: %[[COORD_VAL:.*]] = load <2 x float>, ptr %[[COORD_ADDR]]
+// CHECK: %[[DDX_VAL:.*]] = load <2 x float>, ptr %[[DDX_ADDR]]
+// CHECK: %[[DDY_VAL:.*]] = load <2 x float>, ptr %[[DDY_ADDR]]
+// DXIL: call {{.*}} <4 x float> 
@llvm.dx.resource.samplegrad.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2f32.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE1]], target("dx.Sampler", 0) 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL]], <2 x float> %[[DDX_VAL]], <2 x 
float> %[[DDY_VAL]], <2 x i32> zeroinitializer)
+// SPIRV: call {{.*}} <4 x float> 
@llvm.spv.resource.samplegrad.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2f32.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE1]], target("spirv.Sampler") 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL]], <2 x float> %[[DDX_VAL]], <2 x 
float> %[[DDY_VAL]], <2 x i32> zeroinitializer)
+
+// CHECK-LABEL: @test_offset(float vector[2], float vector[2], float vector[2])
+// CHECK: %[[CALL_OFFSET:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleGrad(hlsl::SamplerState, float vector[2], float vector[2], 
float vector[2], int vector[2])(ptr {{.*}} @t, ptr {{.*}} 
byval(%"class.hlsl::SamplerState") {{.*}}, <2 x float> {{.*}} %{{.*}}, <2 x 
float> {{.*}} %{{.*}}, <2 x float> {{.*}} %{{.*}}, <2 x i32> noundef <i32 1, 
i32 2>)
+// CHECK: ret <4 x float> %[[CALL_OFFSET]]
+
+float4 test_offset(float2 loc : LOC, float2 ddx : DDX, float2 ddy : DDY) : 
SV_Target {
+  return t.SampleGrad(s, loc, ddx, ddy, int2(1, 2));
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} <4 x float> 
@hlsl::Texture2D<float vector[4]>::SampleGrad(hlsl::SamplerState, float 
vector[2], float vector[2], float vector[2], int vector[2])(
+// CHECK-SAME: ptr {{.*}} %[[THIS:[^,]+]], ptr {{.*}} 
byval(%"class.hlsl::SamplerState") {{.*}} %[[SAMPLER:[^,]+]], <2 x float> 
{{.*}} %[[COORD:[^,]+]], <2 x float> {{.*}} %[[DDX:[^,]+]], <2 x float> {{.*}} 
%[[DDY:[^,]+]], <2 x i32> {{.*}} %[[OFFSET:[^)]+]])
+// CHECK: %[[THIS_ADDR:.*]] = alloca ptr
+// CHECK: %[[COORD_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[DDX_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[DDY_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[OFFSET_ADDR:.*]] = alloca <2 x i32>
+// CHECK: store ptr %[[THIS]], ptr %[[THIS_ADDR]]
+// CHECK: store <2 x float> %[[COORD]], ptr %[[COORD_ADDR]]
+// CHECK: store <2 x float> %[[DDX]], ptr %[[DDX_ADDR]]
+// CHECK: store <2 x float> %[[DDY]], ptr %[[DDY_ADDR]]
+// CHECK: store <2 x i32> %[[OFFSET]], ptr %[[OFFSET_ADDR]]
+// CHECK: %[[THIS_VAL2:.*]] = load ptr, ptr %[[THIS_ADDR]]
+// CHECK: %[[HANDLE_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL2]], i32 0, i32 0
+// CHECK: %[[HANDLE2:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP2]]
+// CHECK: %[[SAMPLER_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %[[SAMPLER]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H2:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP2]]
+// CHECK: %[[COORD_VAL:.*]] = load <2 x float>, ptr %[[COORD_ADDR]]
+// CHECK: %[[DDX_VAL:.*]] = load <2 x float>, ptr %[[DDX_ADDR]]
+// CHECK: %[[DDY_VAL:.*]] = load <2 x float>, ptr %[[DDY_ADDR]]
+// CHECK: %[[OFFSET_VAL:.*]] = load <2 x i32>, ptr %[[OFFSET_ADDR]]
+// DXIL: call {{.*}} <4 x float> 
@llvm.dx.resource.samplegrad.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2f32.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE2]], target("dx.Sampler", 0) 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL]], <2 x float> %[[DDX_VAL]], <2 x 
float> %[[DDY_VAL]], <2 x i32> %[[OFFSET_VAL]])
+// SPIRV: call {{.*}} <4 x float> 
@llvm.spv.resource.samplegrad.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2f32.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE2]], target("spirv.Sampler") 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL]], <2 x float> %[[DDX_VAL]], <2 x 
float> %[[DDY_VAL]], <2 x i32> %[[OFFSET_VAL]])
+
+// CHECK-LABEL: @test_clamp(float vector[2], float vector[2], float vector[2])
+// CHECK: %[[CALL_CLAMP:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleGrad(hlsl::SamplerState, float vector[2], float vector[2], 
float vector[2], int vector[2], float)(ptr {{.*}} @t, ptr {{.*}} 
byval(%"class.hlsl::SamplerState") {{.*}}, <2 x float> {{.*}} %{{.*}}, <2 x 
float> {{.*}} %{{.*}}, <2 x float> {{.*}} %{{.*}}, <2 x i32> noundef <i32 1, 
i32 2>, float {{.*}} 1.000000e+00)
+// CHECK: ret <4 x float> %[[CALL_CLAMP]]
+
+float4 test_clamp(float2 loc : LOC, float2 ddx : DDX, float2 ddy : DDY) : 
SV_Target {
+  return t.SampleGrad(s, loc, ddx, ddy, int2(1, 2), 1.0f);
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} <4 x float> 
@hlsl::Texture2D<float vector[4]>::SampleGrad(hlsl::SamplerState, float 
vector[2], float vector[2], float vector[2], int vector[2], float)(
+// CHECK-SAME: ptr {{.*}} %[[THIS:[^,]+]], ptr {{.*}} 
byval(%"class.hlsl::SamplerState") {{.*}} %[[SAMPLER:[^,]+]], <2 x float> 
{{.*}} %[[COORD:[^,]+]], <2 x float> {{.*}} %[[DDX:[^,]+]], <2 x float> {{.*}} 
%[[DDY:[^,]+]], <2 x i32> {{.*}} %[[OFFSET:[^,]+]], float {{.*}} 
%[[CLAMP:[^)]+]])
+// CHECK: %[[THIS_ADDR:.*]] = alloca ptr
+// CHECK: %[[COORD_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[DDX_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[DDY_ADDR:.*]] = alloca <2 x float>
+// CHECK: %[[OFFSET_ADDR:.*]] = alloca <2 x i32>
+// CHECK: %[[CLAMP_ADDR:.*]] = alloca float
+// CHECK: store ptr %[[THIS]], ptr %[[THIS_ADDR]]
+// CHECK: store <2 x float> %[[COORD]], ptr %[[COORD_ADDR]]
+// CHECK: store <2 x float> %[[DDX]], ptr %[[DDX_ADDR]]
+// CHECK: store <2 x float> %[[DDY]], ptr %[[DDY_ADDR]]
+// CHECK: store <2 x i32> %[[OFFSET]], ptr %[[OFFSET_ADDR]]
+// CHECK: store float %[[CLAMP]], ptr %[[CLAMP_ADDR]]
+// CHECK: %[[THIS_VAL3:.*]] = load ptr, ptr %[[THIS_ADDR]]
+// CHECK: %[[HANDLE_GEP3:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL3]], i32 0, i32 0
+// CHECK: %[[HANDLE3:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP3]]
+// CHECK: %[[SAMPLER_GEP3:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %[[SAMPLER]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H3:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP3]]
+// CHECK: %[[COORD_VAL:.*]] = load <2 x float>, ptr %[[COORD_ADDR]]
+// CHECK: %[[DDX_VAL:.*]] = load <2 x float>, ptr %[[DDX_ADDR]]
+// CHECK: %[[DDY_VAL:.*]] = load <2 x float>, ptr %[[DDY_ADDR]]
+// CHECK: %[[OFFSET_VAL:.*]] = load <2 x i32>, ptr %[[OFFSET_ADDR]]
+// CHECK: %[[CLAMP_VAL:.*]] = load float, ptr %[[CLAMP_ADDR]]
+// CHECK: %[[CLAMP_CAST3:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: call {{.*}} <4 x float> 
@llvm.dx.resource.samplegrad.clamp.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2f32.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE3]], target("dx.Sampler", 0) 
%[[SAMPLER_H3]], <2 x float> %[[COORD_VAL]], <2 x float> %[[DDX_VAL]], <2 x 
float> %[[DDY_VAL]], <2 x i32> %[[OFFSET_VAL]], float %[[CLAMP_CAST3]])
+// SPIRV: call {{.*}} <4 x float> 
@llvm.spv.resource.samplegrad.clamp.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2f32.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE3]], target("spirv.Sampler") 
%[[SAMPLER_H3]], <2 x float> %[[COORD_VAL]], <2 x float> %[[DDX_VAL]], <2 x 
float> %[[DDY_VAL]], <2 x i32> %[[OFFSET_VAL]], float %[[CLAMP_CAST3]])

diff  --git a/clang/test/CodeGenHLSL/resources/Texture2D-SampleLevel.hlsl 
b/clang/test/CodeGenHLSL/resources/Texture2D-SampleLevel.hlsl
new file mode 100644
index 0000000000000..bcd025c164ac0
--- /dev/null
+++ b/clang/test/CodeGenHLSL/resources/Texture2D-SampleLevel.hlsl
@@ -0,0 +1,68 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,DXIL
+// RUN: %clang_cc1 -triple spirv-vulkan-library -x hlsl -emit-llvm 
-disable-llvm-passes -finclude-default-header -o - %s | llvm-cxxfilt | 
FileCheck %s --check-prefixes=CHECK,SPIRV
+
+// DXIL: %"class.hlsl::Texture2D" = type { target("dx.Texture", <4 x float>, 
0, 0, 0, 2) }
+// DXIL: %"class.hlsl::SamplerState" = type { target("dx.Sampler", 0) }
+
+// SPIRV: %"class.hlsl::Texture2D" = type { target("spirv.Image", float, 1, 2, 
0, 0, 1, 0) }
+// SPIRV: %"class.hlsl::SamplerState" = type { target("spirv.Sampler") }
+
+Texture2D<float4> t;
+SamplerState s;
+
+// CHECK-LABEL: @test_level(float vector[2], float)
+// CHECK: %[[CALL:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleLevel(hlsl::SamplerState, float vector[2], float)(ptr {{.*}} 
@t, ptr {{.*}} byval(%"class.hlsl::SamplerState") {{.*}}, <2 x float> {{.*}} 
%{{.*}}, float {{.*}} 0.000000e+00)
+// CHECK: ret <4 x float> %[[CALL]]
+
+float4 test_level(float2 loc : LOC, float lod : LOD) : SV_Target {
+  return t.SampleLevel(s, loc, 0.0f);
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} <4 x float> 
@hlsl::Texture2D<float vector[4]>::SampleLevel(hlsl::SamplerState, float 
vector[2], float)(
+// CHECK-SAME: ptr {{.*}} %[[THIS1:[^,]+]], ptr {{.*}} 
byval(%"class.hlsl::SamplerState") {{.*}} %[[SAMPLER1:[^,]+]], <2 x float> 
noundef nofpclass(nan inf) %[[COORD1:[^,]+]], float noundef nofpclass(nan inf) 
%[[LOD1:[^)]+]])
+// CHECK: %[[THIS_ADDR1:.*]] = alloca ptr
+// CHECK: %[[COORD_ADDR1:.*]] = alloca <2 x float>
+// CHECK: %[[LOD_ADDR1:.*]] = alloca float
+// CHECK: store ptr %[[THIS1]], ptr %[[THIS_ADDR1]]
+// CHECK: store <2 x float> %[[COORD1]], ptr %[[COORD_ADDR1]]
+// CHECK: store float %[[LOD1]], ptr %[[LOD_ADDR1]]
+// CHECK: %[[THIS_VAL1:.*]] = load ptr, ptr %[[THIS_ADDR1]]
+// CHECK: %[[HANDLE_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL1]], i32 0, i32 0
+// CHECK: %[[HANDLE1:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP1]]
+// CHECK: %[[SAMPLER_GEP1:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %[[SAMPLER1]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H1:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP1]]
+// CHECK: %[[COORD_VAL1:.*]] = load <2 x float>, ptr %[[COORD_ADDR1]]
+// CHECK: %[[LOD_VAL1:.*]] = load float, ptr %[[LOD_ADDR1]]
+// CHECK: %[[LOD_CAST1:.*]] = fptrunc {{.*}} double {{.*}} to float
+// DXIL: call {{.*}}                         <4 x float> 
@llvm.dx.resource.samplelevel.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE1]], target("dx.Sampler", 0) 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL1]], float %[[LOD_CAST1]], <2 x i32> 
zeroinitializer)
+// SPIRV: call {{.*}} <4 x float> 
@llvm.spv.resource.samplelevel.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE1]], target("spirv.Sampler") 
%[[SAMPLER_H1]], <2 x float> %[[COORD_VAL1]], float %[[LOD_CAST1]], <2 x i32> 
zeroinitializer)
+
+// CHECK-LABEL: @test_offset(float vector[2], float)
+// CHECK: %[[CALL_OFFSET:.*]] = call {{.*}} <4 x float> @hlsl::Texture2D<float 
vector[4]>::SampleLevel(hlsl::SamplerState, float vector[2], float, int 
vector[2])(ptr {{.*}} @t, ptr {{.*}} byval(%"class.hlsl::SamplerState") {{.*}}, 
<2 x float> {{.*}} %{{.*}}, float {{.*}} 0.000000e+00, <2 x i32> noundef <i32 
1, i32 2>)
+// CHECK: ret <4 x float> %[[CALL_OFFSET]]
+
+float4 test_offset(float2 loc : LOC, float lod : LOD) : SV_Target {
+  return t.SampleLevel(s, loc, 0.0f, int2(1, 2));
+}
+
+// CHECK-LABEL: define linkonce_odr hidden {{.*}} <4 x float> 
@hlsl::Texture2D<float vector[4]>::SampleLevel(hlsl::SamplerState, float 
vector[2], float, int vector[2])(
+// CHECK-SAME: ptr {{.*}} %[[THIS2:[^,]+]], ptr {{.*}} 
byval(%"class.hlsl::SamplerState") {{.*}} %[[SAMPLER2:[^,]+]], <2 x float> 
noundef nofpclass(nan inf) %[[COORD2:[^,]+]], float noundef nofpclass(nan inf) 
%[[LOD2:[^,]+]], <2 x i32> noundef %[[OFFSET2:[^)]+]])
+// CHECK: %[[THIS_ADDR2:.*]] = alloca ptr
+// CHECK: %[[COORD_ADDR2:.*]] = alloca <2 x float>
+// CHECK: %[[LOD_ADDR2:.*]] = alloca float
+// CHECK: %[[OFFSET_ADDR2:.*]] = alloca <2 x i32>
+// CHECK: store ptr %[[THIS2]], ptr %[[THIS_ADDR2]]
+// CHECK: store <2 x float> %[[COORD2]], ptr %[[COORD_ADDR2]]
+// CHECK: store float %[[LOD2]], ptr %[[LOD_ADDR2]]
+// CHECK: store <2 x i32> %[[OFFSET2]], ptr %[[OFFSET_ADDR2]]
+// CHECK: %[[THIS_VAL2:.*]] = load ptr, ptr %[[THIS_ADDR2]]
+// CHECK: %[[HANDLE_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::Texture2D", ptr %[[THIS_VAL2]], i32 0, i32 0
+// CHECK: %[[HANDLE2:.*]] = load target{{.*}}, ptr %[[HANDLE_GEP2]]
+// CHECK: %[[SAMPLER_GEP2:.*]] = getelementptr inbounds nuw 
%"class.hlsl::SamplerState", ptr %[[SAMPLER2]], i32 0, i32 0
+// CHECK: %[[SAMPLER_H2:.*]] = load target{{.*}}, ptr %[[SAMPLER_GEP2]]
+// CHECK: %[[COORD_VAL2:.*]] = load <2 x float>, ptr %[[COORD_ADDR2]]
+// CHECK: %[[LOD_VAL2:.*]] = load float, ptr %[[LOD_ADDR2]]
+// CHECK: %[[LOD_CAST2:.*]] = fptrunc {{.*}} double {{.*}} to float
+// CHECK: %[[OFFSET_VAL2:.*]] = load <2 x i32>, ptr %[[OFFSET_ADDR2]]
+// DXIL: call {{.*}} <4 x float> 
@llvm.dx.resource.samplelevel.v4f32.tdx.Texture_v4f32_0_0_0_2t.tdx.Sampler_0t.v2f32.v2i32(target("dx.Texture",
 <4 x float>, 0, 0, 0, 2) %[[HANDLE2]], target("dx.Sampler", 0) 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL2]], float %[[LOD_CAST2]], <2 x i32> 
%[[OFFSET_VAL2]])
+// SPIRV: call {{.*}} <4 x float> 
@llvm.spv.resource.samplelevel.v4f32.tspirv.Image_f32_1_2_0_0_1_0t.tspirv.Samplert.v2f32.v2i32(target("spirv.Image",
 float, 1, 2, 0, 0, 1, 0) %[[HANDLE2]], target("spirv.Sampler") 
%[[SAMPLER_H2]], <2 x float> %[[COORD_VAL2]], float %[[LOD_CAST2]], <2 x i32> 
%[[OFFSET_VAL2]])

diff  --git a/clang/test/SemaHLSL/Texture2D-SampleBias.hlsl 
b/clang/test/SemaHLSL/Texture2D-SampleBias.hlsl
new file mode 100644
index 0000000000000..e49575c0dfc7d
--- /dev/null
+++ b/clang/test/SemaHLSL/Texture2D-SampleBias.hlsl
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library 
-finclude-default-header -fsyntax-only -verify %s
+
+Texture2D<float4> tex;
+SamplerState samp;
+
+void main() {
+  float2 loc = float2(0, 0);
+  float bias = 0;
+  int2 offset = int2(0, 0);
+  float clamp = 0;
+
+  tex.SampleBias(samp, loc, bias);
+  tex.SampleBias(samp, loc, bias, offset);
+  tex.SampleBias(samp, loc, bias, offset, clamp);
+
+  // Too few arguments.
+  tex.SampleBias(samp, loc); // expected-error {{no matching member function 
for call to 'SampleBias'}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 2 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 2 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 2 were provided}}
+
+  // Too many arguments.
+  tex.SampleBias(samp, loc, bias, offset, clamp, 0); // expected-error {{no 
matching member function for call to 'SampleBias'}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 6 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 6 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 6 were provided}}
+
+  // Invalid argument types.
+  tex.SampleBias(samp, loc, bias, offset, "invalid"); // expected-error {{no 
matching member function for call to 'SampleBias'}}
+  // expected-note@*:* {{no known conversion from 'const char[8]' to 'float' 
for 5th argument}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 5 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 5 were provided}}
+}
\ No newline at end of file

diff  --git a/clang/test/SemaHLSL/Texture2D-SampleCmp.hlsl 
b/clang/test/SemaHLSL/Texture2D-SampleCmp.hlsl
new file mode 100644
index 0000000000000..b05fa2d59e29f
--- /dev/null
+++ b/clang/test/SemaHLSL/Texture2D-SampleCmp.hlsl
@@ -0,0 +1,47 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl 
-fsyntax-only -finclude-default-header -verify %s
+
+
+Texture2D<float4> t;
+Texture2D<int4> t_int;
+SamplerComparisonState s;
+SamplerState s2;
+
+void main(float2 loc, float cmp) {
+  t.SampleCmp(s, loc, cmp);
+  t.SampleCmp(s, loc, cmp, int2(1, 2));
+  t.SampleCmp(s, loc, cmp, int2(1, 2), 1.0f);
+
+  // expected-error@* {{'SampleCmp' and 'SampleCmpLevelZero' require resource 
to contain a floating point type}}
+  // expected-note@*:* {{in instantiation of member function 
'hlsl::Texture2D<vector<int, 4>>::SampleCmp' requested here}}
+  t_int.SampleCmp(s, loc, cmp);
+
+  // expected-error@+4 {{no matching member function for call to 'SampleCmp'}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 1 was provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 1 was provided}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 1 was provided}}
+  t.SampleCmp(loc);
+
+  // expected-error@+4 {{no matching member function for call to 'SampleCmp'}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 6 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 6 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 6 were provided}}
+  t.SampleCmp(s, loc, cmp, int2(1, 2), 1.0f, 1.0f);
+
+  // expected-error@+4 {{no matching member function for call to 'SampleCmp'}}
+  // expected-note@*:* {{candidate function not viable: no known conversion 
from 'SamplerState' to 'hlsl::SamplerComparisonState' for 1st argument}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 3 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 3 were provided}}
+  t.SampleCmp(s2, loc, cmp);
+
+  // expected-error@+4 {{no matching member function for call to 'SampleCmp'}}
+  // expected-note@*:* {{candidate function not viable: no known conversion 
from 'SamplerComparisonState' to 'vector<int, 2>' (vector of 2 'int' values) 
for 4th argument}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 4 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 4 were provided}}
+  t.SampleCmp(s, loc, cmp, s);
+
+  // expected-error@+4 {{no matching member function for call to 'SampleCmp'}}
+  // expected-note@*:* {{candidate function not viable: no known conversion 
from 'SamplerComparisonState' to 'float' for 5th argument}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 5 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 5 were provided}}
+  t.SampleCmp(s, loc, cmp, int2(1, 2), s);
+}
\ No newline at end of file

diff  --git a/clang/test/SemaHLSL/Texture2D-SampleCmpLevelZero.hlsl 
b/clang/test/SemaHLSL/Texture2D-SampleCmpLevelZero.hlsl
new file mode 100644
index 0000000000000..a0879e7bcae4a
--- /dev/null
+++ b/clang/test/SemaHLSL/Texture2D-SampleCmpLevelZero.hlsl
@@ -0,0 +1,36 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl 
-fsyntax-only -finclude-default-header -verify %s
+
+// expected-error@* {{'SampleCmp' and 'SampleCmpLevelZero' require resource to 
contain a floating point type}}
+
+Texture2D<float4> t;
+Texture2D<int4> t_int;
+SamplerComparisonState s;
+SamplerState s2;
+
+void main(float2 loc, float cmp) {
+  t.SampleCmpLevelZero(s, loc, cmp);
+  t.SampleCmpLevelZero(s, loc, cmp, int2(1, 2));
+
+  // expected-note@*:* {{in instantiation of member function 
'hlsl::Texture2D<vector<int, 4>>::SampleCmpLevelZero' requested here}}
+  t_int.SampleCmpLevelZero(s, loc, cmp);
+
+  // expected-error@+3 {{no matching member function for call to 
'SampleCmpLevelZero'}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 1 was provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 1 was provided}}
+  t.SampleCmpLevelZero(loc);
+
+  // expected-error@+3 {{no matching member function for call to 
'SampleCmpLevelZero'}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 5 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 5 were provided}}
+  t.SampleCmpLevelZero(s, loc, cmp, int2(1, 2), 1.0f);
+
+  // expected-error@+3 {{no matching member function for call to 
'SampleCmpLevelZero'}}
+  // expected-note@*:* {{candidate function not viable: no known conversion 
from 'SamplerState' to 'hlsl::SamplerComparisonState' for 1st argument}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 3 were provided}}
+  t.SampleCmpLevelZero(s2, loc, cmp);
+
+  // expected-error@+3 {{no matching member function for call to 
'SampleCmpLevelZero'}}
+  // expected-note@*:* {{candidate function not viable: no known conversion 
from 'SamplerComparisonState' to 'vector<int, 2>' (vector of 2 'int' values) 
for 4th argument}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 4 were provided}}
+  t.SampleCmpLevelZero(s, loc, cmp, s);
+}
\ No newline at end of file

diff  --git a/clang/test/SemaHLSL/Texture2D-SampleGrad.hlsl 
b/clang/test/SemaHLSL/Texture2D-SampleGrad.hlsl
new file mode 100644
index 0000000000000..9705dc9e37d49
--- /dev/null
+++ b/clang/test/SemaHLSL/Texture2D-SampleGrad.hlsl
@@ -0,0 +1,34 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library 
-finclude-default-header -fsyntax-only -verify %s
+
+Texture2D<float4> tex;
+SamplerState samp;
+
+void main() {
+  float2 loc = float2(0, 0);
+  float2 ddx = float2(0, 0);
+  float2 ddy = float2(0, 0);
+  int2 offset = int2(0, 0);
+  float clamp = 0;
+
+  tex.SampleGrad(samp, loc, ddx, ddy);
+  tex.SampleGrad(samp, loc, ddx, ddy, offset);
+  tex.SampleGrad(samp, loc, ddx, ddy, offset, clamp);
+
+  // Too few arguments.
+  tex.SampleGrad(samp, loc, ddx); // expected-error {{no matching member 
function for call to 'SampleGrad'}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 3 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 3 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 6 arguments, 
but 3 were provided}}
+
+  // Too many arguments.
+  tex.SampleGrad(samp, loc, ddx, ddy, offset, clamp, 0); // expected-error 
{{no matching member function for call to 'SampleGrad'}}
+  // expected-note@*:* {{candidate function not viable: requires 6 arguments, 
but 7 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 7 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 7 were provided}}
+
+  // Invalid argument types.
+  tex.SampleGrad(samp, loc, ddx, ddy, offset, "invalid"); // expected-error 
{{no matching member function for call to 'SampleGrad'}}
+  // expected-note@*:* {{no known conversion from 'const char[8]' to 'float' 
for 6th argument}}
+  // expected-note@*:* {{candidate function not viable: requires 5 arguments, 
but 6 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 6 were provided}}
+}

diff  --git a/clang/test/SemaHLSL/Texture2D-SampleLevel.hlsl 
b/clang/test/SemaHLSL/Texture2D-SampleLevel.hlsl
new file mode 100644
index 0000000000000..43f3815201b10
--- /dev/null
+++ b/clang/test/SemaHLSL/Texture2D-SampleLevel.hlsl
@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library 
-finclude-default-header -fsyntax-only -verify %s
+
+Texture2D<float4> tex;
+SamplerState samp;
+
+void main() {
+  float2 loc = float2(0, 0);
+  float lod = 0;
+  int2 offset = int2(0, 0);
+
+  tex.SampleLevel(samp, loc, lod);
+  tex.SampleLevel(samp, loc, lod, offset);
+
+  // Too few arguments.
+  tex.SampleLevel(samp, loc); // expected-error {{no matching member function 
for call to 'SampleLevel'}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 2 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 2 were provided}}
+
+  // Too many arguments.
+  tex.SampleLevel(samp, loc, lod, offset, 0); // expected-error {{no matching 
member function for call to 'SampleLevel'}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 5 were provided}}
+  // expected-note@*:* {{candidate function not viable: requires 3 arguments, 
but 5 were provided}}
+
+  // Invalid argument types.
+  tex.SampleLevel(samp, loc, "invalid"); // expected-error {{no matching 
member function for call to 'SampleLevel'}}
+  // expected-note@*:* {{no known conversion from 'const char[8]' to 'float' 
for 3rd argument}}
+  // expected-note@*:* {{candidate function not viable: requires 4 arguments, 
but 3 were provided}}
+}


        
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