https://github.com/Icohedron updated 
https://github.com/llvm/llvm-project/pull/175633

>From 5ac9ffcda15af7c341477fbb4887dcecbd2d900b Mon Sep 17 00:00:00 2001
From: Deric Cheung <[email protected]>
Date: Mon, 12 Jan 2026 11:26:09 -0800
Subject: [PATCH 1/5] Add type conversions to support bool matrix single
 subscript operators

---
 clang/lib/CodeGen/CGExpr.cpp                  |  8 +++
 clang/lib/CodeGen/CGExprScalar.cpp            |  4 +-
 .../MatrixSingleSubscriptGetter.hlsl          | 69 +++++++++++++++++++
 .../MatrixSingleSubscriptSetter.hlsl          | 63 +++++++++++++++++
 4 files changed, 142 insertions(+), 2 deletions(-)

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 999726340aaed..a80c31692ca0d 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -2744,6 +2744,14 @@ void CodeGenFunction::EmitStoreThroughLValue(RValue Src, 
LValue Dst,
 
       llvm::Value *Row = Dst.getMatrixRowIdx();
       llvm::Value *RowVal = Src.getScalarVal(); // <NumCols x T>
+      if (getLangOpts().HLSL && RowVal->getType()->isIntOrIntVectorTy(1)) {
+        auto* RowValVecTy = dyn_cast<llvm::FixedVectorType>(RowVal->getType());
+        assert(RowValVecTy);
+        llvm::Type *StorageElmTy =
+            llvm::FixedVectorType::get(MatrixVec->getType()->getScalarType(),
+                                       RowValVecTy->getNumElements());
+        RowVal = Builder.CreateZExt(RowVal, StorageElmTy);
+      }
       llvm::MatrixBuilder MB(Builder);
 
       llvm::Constant *ColConstsIndices = nullptr;
diff --git a/clang/lib/CodeGen/CGExprScalar.cpp 
b/clang/lib/CodeGen/CGExprScalar.cpp
index 6fd94752f5126..74df69b5bdf49 100644
--- a/clang/lib/CodeGen/CGExprScalar.cpp
+++ b/clang/lib/CodeGen/CGExprScalar.cpp
@@ -2130,7 +2130,7 @@ Value *ScalarExprEmitter::VisitMatrixSingleSubscriptExpr(
     MB.CreateIndexAssumption(RowIdx, NumRows);
 
   Value *FlatMatrix = Visit(E->getBase());
-  llvm::Type *ElemTy = CGF.ConvertType(MatrixTy->getElementType());
+  llvm::Type *ElemTy = CGF.ConvertTypeForMem(MatrixTy->getElementType());
   auto *ResultTy = llvm::FixedVectorType::get(ElemTy, NumColumns);
   Value *RowVec = llvm::PoisonValue::get(ResultTy);
 
@@ -2146,7 +2146,7 @@ Value *ScalarExprEmitter::VisitMatrixSingleSubscriptExpr(
     RowVec = Builder.CreateInsertElement(RowVec, Elt, Lane, "matrix_row_ins");
   }
 
-  return RowVec;
+  return CGF.EmitFromMemory(RowVec, E->getType());
 }
 
 Value *ScalarExprEmitter::VisitMatrixSubscriptExpr(MatrixSubscriptExpr *E) {
diff --git 
a/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl 
b/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl
index 341a5bbaf0147..dff73fe434b62 100644
--- a/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl
+++ b/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl
@@ -203,3 +203,72 @@ float4 AddFloatMatrixConstant(float4x4 M) {
 int4 AddIntMatrixConstant(int4x4 M) {
    return M[0] + M[1] + M[2] + M[3];
 }
+
+// CHECK-LABEL: define hidden noundef <3 x i1> 
@_Z23getBoolVecMatrixDynamicu11matrix_typeILm2ELm3EbEi(
+// CHECK-SAME: <6 x i1> noundef [[M:%.*]], i32 noundef [[INDEX:%.*]]) 
#[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    [[M_ADDR:%.*]] = alloca [6 x i32], align 4
+// CHECK-NEXT:    [[INDEX_ADDR:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[TMP0:%.*]] = zext <6 x i1> [[M]] to <6 x i32>
+// CHECK-NEXT:    store <6 x i32> [[TMP0]], ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    store i32 [[INDEX]], ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[TMP2:%.*]] = load <6 x i32>, ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    [[TMP3:%.*]] = add i32 0, [[TMP1]]
+// CHECK-NEXT:    [[MATRIX_ELEM:%.*]] = extractelement <6 x i32> [[TMP2]], i32 
[[TMP3]]
+// CHECK-NEXT:    [[MATRIX_ROW_INS:%.*]] = insertelement <3 x i32> poison, i32 
[[MATRIX_ELEM]], i32 0
+// CHECK-NEXT:    [[TMP4:%.*]] = add i32 2, [[TMP1]]
+// CHECK-NEXT:    [[MATRIX_ELEM1:%.*]] = extractelement <6 x i32> [[TMP2]], 
i32 [[TMP4]]
+// CHECK-NEXT:    [[MATRIX_ROW_INS2:%.*]] = insertelement <3 x i32> 
[[MATRIX_ROW_INS]], i32 [[MATRIX_ELEM1]], i32 1
+// CHECK-NEXT:    [[TMP5:%.*]] = add i32 4, [[TMP1]]
+// CHECK-NEXT:    [[MATRIX_ELEM3:%.*]] = extractelement <6 x i32> [[TMP2]], 
i32 [[TMP5]]
+// CHECK-NEXT:    [[MATRIX_ROW_INS4:%.*]] = insertelement <3 x i32> 
[[MATRIX_ROW_INS2]], i32 [[MATRIX_ELEM3]], i32 2
+// CHECK-NEXT:    [[LOADEDV:%.*]] = trunc <3 x i32> [[MATRIX_ROW_INS4]] to <3 
x i1>
+// CHECK-NEXT:    ret <3 x i1> [[LOADEDV]]
+//
+bool3 getBoolVecMatrixDynamic(bool2x3 M, int index) {
+    return M[index];
+}
+
+// CHECK-LABEL: define hidden noundef <4 x i1> 
@_Z24getBoolVecMatrixConstantu11matrix_typeILm4ELm4EbEi(
+// CHECK-SAME: <16 x i1> noundef [[M:%.*]], i32 noundef [[INDEX:%.*]]) 
#[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    [[M_ADDR:%.*]] = alloca [16 x i32], align 4
+// CHECK-NEXT:    [[INDEX_ADDR:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[TMP0:%.*]] = zext <16 x i1> [[M]] to <16 x i32>
+// CHECK-NEXT:    store <16 x i32> [[TMP0]], ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    store i32 [[INDEX]], ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[TMP1:%.*]] = load <16 x i32>, ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    [[MATRIX_ELEM:%.*]] = extractelement <16 x i32> [[TMP1]], 
i32 0
+// CHECK-NEXT:    [[MATRIX_ROW_INS:%.*]] = insertelement <4 x i32> poison, i32 
[[MATRIX_ELEM]], i32 0
+// CHECK-NEXT:    [[MATRIX_ELEM1:%.*]] = extractelement <16 x i32> [[TMP1]], 
i32 4
+// CHECK-NEXT:    [[MATRIX_ROW_INS2:%.*]] = insertelement <4 x i32> 
[[MATRIX_ROW_INS]], i32 [[MATRIX_ELEM1]], i32 1
+// CHECK-NEXT:    [[MATRIX_ELEM3:%.*]] = extractelement <16 x i32> [[TMP1]], 
i32 8
+// CHECK-NEXT:    [[MATRIX_ROW_INS4:%.*]] = insertelement <4 x i32> 
[[MATRIX_ROW_INS2]], i32 [[MATRIX_ELEM3]], i32 2
+// CHECK-NEXT:    [[MATRIX_ELEM5:%.*]] = extractelement <16 x i32> [[TMP1]], 
i32 12
+// CHECK-NEXT:    [[MATRIX_ROW_INS6:%.*]] = insertelement <4 x i32> 
[[MATRIX_ROW_INS4]], i32 [[MATRIX_ELEM5]], i32 3
+// CHECK-NEXT:    [[LOADEDV:%.*]] = trunc <4 x i32> [[MATRIX_ROW_INS6]] to <4 
x i1>
+// CHECK-NEXT:    ret <4 x i1> [[LOADEDV]]
+//
+bool4 getBoolVecMatrixConstant(bool4x4 M, int index) {
+    return M[0];
+}
+
+// CHECK-LABEL: define hidden noundef i1 
@_Z27getBoolScalarMatrixConstantu11matrix_typeILm3ELm1EbEi(
+// CHECK-SAME: <3 x i1> noundef [[M:%.*]], i32 noundef [[INDEX:%.*]]) 
#[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    [[M_ADDR:%.*]] = alloca [3 x i32], align 4
+// CHECK-NEXT:    [[INDEX_ADDR:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[TMP0:%.*]] = zext <3 x i1> [[M]] to <3 x i32>
+// CHECK-NEXT:    store <3 x i32> [[TMP0]], ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    store i32 [[INDEX]], ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[TMP1:%.*]] = load <3 x i32>, ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    [[MATRIX_ELEM:%.*]] = extractelement <3 x i32> [[TMP1]], i32 
1
+// CHECK-NEXT:    [[MATRIX_ROW_INS:%.*]] = insertelement <1 x i32> poison, i32 
[[MATRIX_ELEM]], i32 0
+// CHECK-NEXT:    [[LOADEDV:%.*]] = trunc <1 x i32> [[MATRIX_ROW_INS]] to <1 x 
i1>
+// CHECK-NEXT:    [[CAST_VTRUNC:%.*]] = extractelement <1 x i1> [[LOADEDV]], 
i32 0
+// CHECK-NEXT:    ret i1 [[CAST_VTRUNC]]
+//
+bool getBoolScalarMatrixConstant(bool3x1 M, int index) {
+    return M[1];
+}
diff --git 
a/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptSetter.hlsl 
b/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptSetter.hlsl
index 49746531ddccc..d314f3a87d619 100644
--- a/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptSetter.hlsl
+++ b/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptSetter.hlsl
@@ -58,6 +58,69 @@ void setMatrixScalar(out float2x1 M, int index, float S) {
     M[index] = S;
 }
 
+// CHECK-LABEL: define hidden void 
@_Z13setBoolMatrixRu11matrix_typeILm4ELm4EbEiDv4_b(
+// CHECK-SAME: ptr noalias noundef nonnull align 4 dereferenceable(64) 
[[M:%.*]], i32 noundef [[INDEX:%.*]], <4 x i1> noundef [[V:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    [[M_ADDR:%.*]] = alloca ptr, align 4
+// CHECK-NEXT:    [[INDEX_ADDR:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[V_ADDR:%.*]] = alloca <4 x i32>, align 16
+// CHECK-NEXT:    store ptr [[M]], ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    store i32 [[INDEX]], ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[TMP0:%.*]] = zext <4 x i1> [[V]] to <4 x i32>
+// CHECK-NEXT:    store <4 x i32> [[TMP0]], ptr [[V_ADDR]], align 16
+// CHECK-NEXT:    [[TMP1:%.*]] = load <4 x i32>, ptr [[V_ADDR]], align 16
+// CHECK-NEXT:    [[LOADEDV:%.*]] = trunc <4 x i32> [[TMP1]] to <4 x i1>
+// CHECK-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[M_ADDR]], align 4, !nonnull 
[[META3]], !align [[META4]]
+// CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[MATRIX_LOAD:%.*]] = load <16 x i32>, ptr [[TMP2]], align 4
+// CHECK-NEXT:    [[TMP4:%.*]] = zext <4 x i1> [[LOADEDV]] to <4 x i32>
+// CHECK-NEXT:    [[TMP5:%.*]] = add i32 0, [[TMP3]]
+// CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x i32> [[TMP4]], i32 0
+// CHECK-NEXT:    [[TMP7:%.*]] = insertelement <16 x i32> [[MATRIX_LOAD]], i32 
[[TMP6]], i32 [[TMP5]]
+// CHECK-NEXT:    [[TMP8:%.*]] = add i32 4, [[TMP3]]
+// CHECK-NEXT:    [[TMP9:%.*]] = extractelement <4 x i32> [[TMP4]], i32 1
+// CHECK-NEXT:    [[TMP10:%.*]] = insertelement <16 x i32> [[TMP7]], i32 
[[TMP9]], i32 [[TMP8]]
+// CHECK-NEXT:    [[TMP11:%.*]] = add i32 8, [[TMP3]]
+// CHECK-NEXT:    [[TMP12:%.*]] = extractelement <4 x i32> [[TMP4]], i32 2
+// CHECK-NEXT:    [[TMP13:%.*]] = insertelement <16 x i32> [[TMP10]], i32 
[[TMP12]], i32 [[TMP11]]
+// CHECK-NEXT:    [[TMP14:%.*]] = add i32 12, [[TMP3]]
+// CHECK-NEXT:    [[TMP15:%.*]] = extractelement <4 x i32> [[TMP4]], i32 3
+// CHECK-NEXT:    [[TMP16:%.*]] = insertelement <16 x i32> [[TMP13]], i32 
[[TMP15]], i32 [[TMP14]]
+// CHECK-NEXT:    store <16 x i32> [[TMP16]], ptr [[TMP2]], align 4
+// CHECK-NEXT:    ret void
+//
+void setBoolMatrix(out bool4x4 M, int index, bool4 V) {
+    M[index] = V;
+}
+
+// CHECK-LABEL: define hidden void 
@_Z19setBoolMatrixScalarRu11matrix_typeILm2ELm1EbEib(
+// CHECK-SAME: ptr noalias noundef nonnull align 4 dereferenceable(8) 
[[M:%.*]], i32 noundef [[INDEX:%.*]], i1 noundef [[S:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    [[M_ADDR:%.*]] = alloca ptr, align 4
+// CHECK-NEXT:    [[INDEX_ADDR:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[S_ADDR:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    store ptr [[M]], ptr [[M_ADDR]], align 4
+// CHECK-NEXT:    store i32 [[INDEX]], ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[STOREDV:%.*]] = zext i1 [[S]] to i32
+// CHECK-NEXT:    store i32 [[STOREDV]], ptr [[S_ADDR]], align 4
+// CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[S_ADDR]], align 4
+// CHECK-NEXT:    [[LOADEDV:%.*]] = trunc i32 [[TMP0]] to i1
+// CHECK-NEXT:    [[SPLAT_SPLATINSERT:%.*]] = insertelement <1 x i1> poison, 
i1 [[LOADEDV]], i64 0
+// CHECK-NEXT:    [[SPLAT_SPLAT:%.*]] = shufflevector <1 x i1> 
[[SPLAT_SPLATINSERT]], <1 x i1> poison, <1 x i32> zeroinitializer
+// CHECK-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[M_ADDR]], align 4, !nonnull 
[[META3]], !align [[META4]]
+// CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[INDEX_ADDR]], align 4
+// CHECK-NEXT:    [[MATRIX_LOAD:%.*]] = load <2 x i32>, ptr [[TMP1]], align 4
+// CHECK-NEXT:    [[TMP3:%.*]] = zext <1 x i1> [[SPLAT_SPLAT]] to <1 x i32>
+// CHECK-NEXT:    [[TMP4:%.*]] = add i32 0, [[TMP2]]
+// CHECK-NEXT:    [[TMP5:%.*]] = extractelement <1 x i32> [[TMP3]], i32 0
+// CHECK-NEXT:    [[TMP6:%.*]] = insertelement <2 x i32> [[MATRIX_LOAD]], i32 
[[TMP5]], i32 [[TMP4]]
+// CHECK-NEXT:    store <2 x i32> [[TMP6]], ptr [[TMP1]], align 4
+// CHECK-NEXT:    ret void
+//
+void setBoolMatrixScalar(out bool2x1 M, int index, bool S) {
+    M[index] = S;
+}
+
 // CHECK-LABEL: define hidden void 
@_Z19setMatrixConstIndexRu11matrix_typeILm4ELm4EiES_(
 // CHECK-SAME: ptr noalias noundef nonnull align 4 dereferenceable(64) 
[[M:%.*]], <16 x i32> noundef [[N:%.*]]) #[[ATTR0]] {
 // CHECK-NEXT:  [[ENTRY:.*:]]

>From ab754a17624f8df99394059cd7912b45b23b4b7c Mon Sep 17 00:00:00 2001
From: Deric Cheung <[email protected]>
Date: Mon, 12 Jan 2026 12:51:32 -0800
Subject: [PATCH 2/5] Apply clang-format

---
 clang/lib/CodeGen/CGExpr.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index a80c31692ca0d..13f2200be77c8 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -2745,7 +2745,7 @@ void CodeGenFunction::EmitStoreThroughLValue(RValue Src, 
LValue Dst,
       llvm::Value *Row = Dst.getMatrixRowIdx();
       llvm::Value *RowVal = Src.getScalarVal(); // <NumCols x T>
       if (getLangOpts().HLSL && RowVal->getType()->isIntOrIntVectorTy(1)) {
-        auto* RowValVecTy = dyn_cast<llvm::FixedVectorType>(RowVal->getType());
+        auto *RowValVecTy = dyn_cast<llvm::FixedVectorType>(RowVal->getType());
         assert(RowValVecTy);
         llvm::Type *StorageElmTy =
             llvm::FixedVectorType::get(MatrixVec->getType()->getScalarType(),

>From 14cbbb5804237087f6ac301ec62930b8db15afa8 Mon Sep 17 00:00:00 2001
From: Deric Cheung <[email protected]>
Date: Mon, 12 Jan 2026 15:14:52 -0800
Subject: [PATCH 3/5] Use cast instead of dyn_cast followed by assert

---
 clang/lib/CodeGen/CGExpr.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 13f2200be77c8..a8e53e77b2e8c 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -2745,8 +2745,7 @@ void CodeGenFunction::EmitStoreThroughLValue(RValue Src, 
LValue Dst,
       llvm::Value *Row = Dst.getMatrixRowIdx();
       llvm::Value *RowVal = Src.getScalarVal(); // <NumCols x T>
       if (getLangOpts().HLSL && RowVal->getType()->isIntOrIntVectorTy(1)) {
-        auto *RowValVecTy = dyn_cast<llvm::FixedVectorType>(RowVal->getType());
-        assert(RowValVecTy);
+        auto *RowValVecTy = cast<llvm::FixedVectorType>(RowVal->getType());
         llvm::Type *StorageElmTy =
             llvm::FixedVectorType::get(MatrixVec->getType()->getScalarType(),
                                        RowValVecTy->getNumElements());

>From 5159e22cd97e39e1cf3f15822f20f1281e0b0df9 Mon Sep 17 00:00:00 2001
From: Deric Cheung <[email protected]>
Date: Mon, 12 Jan 2026 16:16:33 -0800
Subject: [PATCH 4/5] Replace HLSL lang condition with a comment and assert

---
 clang/lib/CodeGen/CGExpr.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index a8e53e77b2e8c..91407b233e890 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -2744,13 +2744,20 @@ void CodeGenFunction::EmitStoreThroughLValue(RValue 
Src, LValue Dst,
 
       llvm::Value *Row = Dst.getMatrixRowIdx();
       llvm::Value *RowVal = Src.getScalarVal(); // <NumCols x T>
-      if (getLangOpts().HLSL && RowVal->getType()->isIntOrIntVectorTy(1)) {
+
+      if (RowVal->getType()->isIntOrIntVectorTy(1)) {
+        // NOTE: If matrix single subscripting becomes a feature in languages
+        // other than HLSL, the following assert should be removed and the
+        // assert condition should be made part of the enclosing if-statement
+        // condition as is the case for similar logic for Dst.isMatrixElt()
+        assert(getLangOpts().HLSL);
         auto *RowValVecTy = cast<llvm::FixedVectorType>(RowVal->getType());
         llvm::Type *StorageElmTy =
             llvm::FixedVectorType::get(MatrixVec->getType()->getScalarType(),
                                        RowValVecTy->getNumElements());
         RowVal = Builder.CreateZExt(RowVal, StorageElmTy);
       }
+
       llvm::MatrixBuilder MB(Builder);
 
       llvm::Constant *ColConstsIndices = nullptr;

>From f7df7d91e909538d6716d18cb3070e42654ee8f8 Mon Sep 17 00:00:00 2001
From: Deric Cheung <[email protected]>
Date: Tue, 13 Jan 2026 13:49:31 -0800
Subject: [PATCH 5/5] Remove unused function parameters

---
 .../MatrixSingleSubscriptGetter.hlsl             | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git 
a/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl 
b/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl
index dff73fe434b62..df724d217fe6b 100644
--- a/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl
+++ b/clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptGetter.hlsl
@@ -230,14 +230,12 @@ bool3 getBoolVecMatrixDynamic(bool2x3 M, int index) {
     return M[index];
 }
 
-// CHECK-LABEL: define hidden noundef <4 x i1> 
@_Z24getBoolVecMatrixConstantu11matrix_typeILm4ELm4EbEi(
-// CHECK-SAME: <16 x i1> noundef [[M:%.*]], i32 noundef [[INDEX:%.*]]) 
#[[ATTR0]] {
+// CHECK-LABEL: define hidden noundef <4 x i1> 
@_Z24getBoolVecMatrixConstantu11matrix_typeILm4ELm4EbE(
+// CHECK-SAME: <16 x i1> noundef [[M:%.*]]) #[[ATTR0]] {
 // CHECK-NEXT:  [[ENTRY:.*:]]
 // CHECK-NEXT:    [[M_ADDR:%.*]] = alloca [16 x i32], align 4
-// CHECK-NEXT:    [[INDEX_ADDR:%.*]] = alloca i32, align 4
 // CHECK-NEXT:    [[TMP0:%.*]] = zext <16 x i1> [[M]] to <16 x i32>
 // CHECK-NEXT:    store <16 x i32> [[TMP0]], ptr [[M_ADDR]], align 4
-// CHECK-NEXT:    store i32 [[INDEX]], ptr [[INDEX_ADDR]], align 4
 // CHECK-NEXT:    [[TMP1:%.*]] = load <16 x i32>, ptr [[M_ADDR]], align 4
 // CHECK-NEXT:    [[MATRIX_ELEM:%.*]] = extractelement <16 x i32> [[TMP1]], 
i32 0
 // CHECK-NEXT:    [[MATRIX_ROW_INS:%.*]] = insertelement <4 x i32> poison, i32 
[[MATRIX_ELEM]], i32 0
@@ -250,18 +248,16 @@ bool3 getBoolVecMatrixDynamic(bool2x3 M, int index) {
 // CHECK-NEXT:    [[LOADEDV:%.*]] = trunc <4 x i32> [[MATRIX_ROW_INS6]] to <4 
x i1>
 // CHECK-NEXT:    ret <4 x i1> [[LOADEDV]]
 //
-bool4 getBoolVecMatrixConstant(bool4x4 M, int index) {
+bool4 getBoolVecMatrixConstant(bool4x4 M) {
     return M[0];
 }
 
-// CHECK-LABEL: define hidden noundef i1 
@_Z27getBoolScalarMatrixConstantu11matrix_typeILm3ELm1EbEi(
-// CHECK-SAME: <3 x i1> noundef [[M:%.*]], i32 noundef [[INDEX:%.*]]) 
#[[ATTR0]] {
+// CHECK-LABEL: define hidden noundef i1 
@_Z27getBoolScalarMatrixConstantu11matrix_typeILm3ELm1EbE(
+// CHECK-SAME: <3 x i1> noundef [[M:%.*]]) #[[ATTR0]] {
 // CHECK-NEXT:  [[ENTRY:.*:]]
 // CHECK-NEXT:    [[M_ADDR:%.*]] = alloca [3 x i32], align 4
-// CHECK-NEXT:    [[INDEX_ADDR:%.*]] = alloca i32, align 4
 // CHECK-NEXT:    [[TMP0:%.*]] = zext <3 x i1> [[M]] to <3 x i32>
 // CHECK-NEXT:    store <3 x i32> [[TMP0]], ptr [[M_ADDR]], align 4
-// CHECK-NEXT:    store i32 [[INDEX]], ptr [[INDEX_ADDR]], align 4
 // CHECK-NEXT:    [[TMP1:%.*]] = load <3 x i32>, ptr [[M_ADDR]], align 4
 // CHECK-NEXT:    [[MATRIX_ELEM:%.*]] = extractelement <3 x i32> [[TMP1]], i32 
1
 // CHECK-NEXT:    [[MATRIX_ROW_INS:%.*]] = insertelement <1 x i32> poison, i32 
[[MATRIX_ELEM]], i32 0
@@ -269,6 +265,6 @@ bool4 getBoolVecMatrixConstant(bool4x4 M, int index) {
 // CHECK-NEXT:    [[CAST_VTRUNC:%.*]] = extractelement <1 x i1> [[LOADEDV]], 
i32 0
 // CHECK-NEXT:    ret i1 [[CAST_VTRUNC]]
 //
-bool getBoolScalarMatrixConstant(bool3x1 M, int index) {
+bool getBoolScalarMatrixConstant(bool3x1 M) {
     return M[1];
 }

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