yaxunl created this revision.
Herald added subscribers: nhaehnle, wdng.
There is an incoming change in LLVM allowing alloca to return a private pointer
which does not pointing to address space 0:
https://reviews.llvm.org/D31042#03b9d490
After this change is committed, alloca will return a pointer pointing to an
address space specified by the data layout (so called alloca addr space, which
is the last component of the data layout, e.g. A5 indicating alloca address
space is 5). A data layout not specifying alloca address space will assume it
is 0, therefore keeping the original behaviour.
Clang codegen needs to make corresponding changes to account for the API change
of alloca. The change is straightforward. Basically when creating alloca, use
the alloca address space specified by the data layout.
For OpenCL, the private address space qualifier is 0 in AST. Before this
change, 0 address space qualifier is always mapped to target address space 0.
As now target private address space is specified by alloca address space in
data layout, address space qualifier 0 needs to be mapped to alloca addr space
specified by the data layout.
This change has no impact on targets whose alloca addr space is 0.
https://reviews.llvm.org/D31404
Files:
include/clang/AST/ASTContext.h
lib/AST/ASTContext.cpp
lib/Basic/Targets.cpp
lib/CodeGen/CGBuiltin.cpp
lib/CodeGen/CGCall.cpp
lib/CodeGen/CGDecl.cpp
lib/CodeGen/CGExpr.cpp
lib/CodeGen/CGObjCGNU.cpp
test/CodeGenOpenCL/address-spaces.cl
test/CodeGenOpenCL/amdgpu-env-amdgiz.cl
test/CodeGenOpenCL/vla.cl
Index: test/CodeGenOpenCL/vla.cl
===================================================================
--- test/CodeGenOpenCL/vla.cl
+++ test/CodeGenOpenCL/vla.cl
@@ -1,18 +1,26 @@
-// RUN: %clang_cc1 -emit-llvm -triple "spir-unknown-unknown" -O0 -cl-std=CL2.0 -o - %s | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm -triple "spir-unknown-unknown" -O0 -cl-std=CL2.0 -o - %s | FileCheck -check-prefixes=CHECK,SPIR %s
+// RUN: %clang_cc1 -emit-llvm -triple amdgcn-amd-amdhsa-opencl -O0 -cl-std=CL2.0 -o - %s | FileCheck -check-prefixes=CHECK,SPIR %s
+// RUN: %clang_cc1 -emit-llvm -triple amdgcn-amd-amdhsa-amdgizcl -O0 -cl-std=CL2.0 -o - %s | FileCheck -check-prefixes=CHECK,GIZ %s
constant int sz0 = 5;
-// CHECK: @sz0 = addrspace(2) constant i32 5
+// SPIR: @sz0 = addrspace(2) constant i32 5
+// GIZ: @sz0 = addrspace(4) constant i32 5
const global int sz1 = 16;
// CHECK: @sz1 = addrspace(1) constant i32 16
const constant int sz2 = 8;
-// CHECK: @sz2 = addrspace(2) constant i32 8
+// SPIR: @sz2 = addrspace(2) constant i32 8
+// GIZ: @sz2 = addrspace(4) constant i32 8
// CHECK: @testvla.vla2 = internal addrspace(3) global [8 x i16] undef
kernel void testvla()
{
int vla0[sz0];
-// CHECK: %vla0 = alloca [5 x i32]
+// SPIR: %vla0 = alloca [5 x i32]
+// SPIR-NOT: %vla0 = alloca [5 x i32]{{.*}}addrspace
+// GIZ: %vla0 = alloca [5 x i32]{{.*}}addrspace(5)
char vla1[sz1];
-// CHECK: %vla1 = alloca [16 x i8]
+// SPIR: %vla1 = alloca [16 x i8]
+// SPIR-NOT: %vla1 = alloca [16 x i8]{{.*}}addrspace
+// GIZ: %vla1 = alloca [16 x i8]{{.*}}addrspace(5)
local short vla2[sz2];
}
Index: test/CodeGenOpenCL/amdgpu-env-amdgiz.cl
===================================================================
--- test/CodeGenOpenCL/amdgpu-env-amdgiz.cl
+++ test/CodeGenOpenCL/amdgpu-env-amdgiz.cl
@@ -4,6 +4,6 @@
// RUN: %clang_cc1 %s -O0 -triple amdgcn---amdgizcl -emit-llvm -o - | FileCheck -check-prefix=GIZ %s
// CHECK: target datalayout = "e-p:32:32-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
-// GIZ: target datalayout = "e-p:64:64-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
+// GIZ: target datalayout = "e-p:64:64-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-A5"
void foo(void) {}
Index: test/CodeGenOpenCL/address-spaces.cl
===================================================================
--- test/CodeGenOpenCL/address-spaces.cl
+++ test/CodeGenOpenCL/address-spaces.cl
@@ -1,44 +1,57 @@
-// RUN: %clang_cc1 %s -O0 -ffake-address-space-map -emit-llvm -o - | FileCheck %s
-// RUN: %clang_cc1 %s -O0 -DCL20 -cl-std=CL2.0 -ffake-address-space-map -emit-llvm -o - | FileCheck %s --check-prefix=CL20
-
-// CHECK: i32* %arg
+// RUN: %clang_cc1 %s -O0 -ffake-address-space-map -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,SPIR
+// RUN: %clang_cc1 %s -O0 -DCL20 -cl-std=CL2.0 -ffake-address-space-map -emit-llvm -o - | FileCheck %s --check-prefixes=CL20,CL20SPIR
+// RUN: %clang_cc1 %s -O0 -triple amdgcn-amd-amdhsa-opencl -emit-llvm -o - | FileCheck --check-prefixes=CHECK,SPIR %s
+// RUN: %clang_cc1 %s -O0 -triple amdgcn-amd-amdhsa-opencl -DCL20 -cl-std=CL2.0 -emit-llvm -o - | FileCheck %s --check-prefixes=CL20,CL20SPIR
+// RUN: %clang_cc1 %s -O0 -triple amdgcn-amd-amdhsa-amdgizcl -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,GIZ
+// RUN: %clang_cc1 %s -O0 -triple amdgcn-amd-amdhsa-amdgizcl -DCL20 -cl-std=CL2.0 -emit-llvm -o - | FileCheck %s --check-prefixes=CL20,CL20GIZ
+
+// SPIR: i32* %arg
+// GIZ: i32 addrspace(5)* %arg
void f__p(__private int *arg) {}
// CHECK: i32 addrspace(1)* %arg
void f__g(__global int *arg) {}
// CHECK: i32 addrspace(3)* %arg
void f__l(__local int *arg) {}
-// CHECK: i32 addrspace(2)* %arg
+// SPIR: i32 addrspace(2)* %arg
+// GIZ: i32 addrspace(4)* %arg
void f__c(__constant int *arg) {}
-// CHECK: i32* %arg
+// SPIR: i32* %arg
+// GIZ: i32 addrspace(5)* %arg
void fp(private int *arg) {}
// CHECK: i32 addrspace(1)* %arg
void fg(global int *arg) {}
// CHECK: i32 addrspace(3)* %arg
void fl(local int *arg) {}
-// CHECK: i32 addrspace(2)* %arg
+// SPIR: i32 addrspace(2)* %arg
+// GIZ: i32 addrspace(4)* %arg
void fc(constant int *arg) {}
#ifdef CL20
int i;
// CL20-DAG: @i = common addrspace(1) global i32 0
int *ptr;
-// CL20-DAG: @ptr = common addrspace(1) global i32 addrspace(4)* null
+// CL20SPIR-DAG: @ptr = common addrspace(1) global i32 addrspace(4)* null
+// CL20GIZ-DAG: @ptr = common addrspace(1) global i32* null
#endif
-// CHECK: i32* %arg
-// CL20-DAG: i32 addrspace(4)* %arg
+// SPIR: i32* %arg
+// GIZ: i32 addrspace(5)* %arg
+// CL20SPIR-DAG: i32 addrspace(4)* %arg
+// CL20GIZ-DAG: i32* %arg
void f(int *arg) {
int i;
-// CHECK: %i = alloca i32,
-// CL20-DAG: %i = alloca i32,
+// SPIR: %i = alloca i32,
+// GIZ: %i = alloca i32{{.*}}addrspace(5)
+// CL20SPIR-DAG: %i = alloca i32,
+// CL20GIZ-DAG: %i = alloca i32{{.*}}addrspace(5)
#ifdef CL20
static int ii;
Index: lib/CodeGen/CGObjCGNU.cpp
===================================================================
--- lib/CodeGen/CGObjCGNU.cpp
+++ lib/CodeGen/CGObjCGNU.cpp
@@ -1330,8 +1330,8 @@
Receiver->getType(), IdTy, nullptr);
// FIXME: Is this really supposed to be a dynamic alloca?
- Address ObjCSuper = Address(Builder.CreateAlloca(ObjCSuperTy),
- CGF.getPointerAlign());
+ Address ObjCSuper = Address(Builder.CreateAlloca(CGM.getDataLayout(),
+ ObjCSuperTy), CGF.getPointerAlign());
Builder.CreateStore(Receiver,
Builder.CreateStructGEP(ObjCSuper, 0, CharUnits::Zero()));
Index: lib/CodeGen/CGExpr.cpp
===================================================================
--- lib/CodeGen/CGExpr.cpp
+++ lib/CodeGen/CGExpr.cpp
@@ -71,7 +71,8 @@
/// block.
llvm::AllocaInst *CodeGenFunction::CreateTempAlloca(llvm::Type *Ty,
const Twine &Name) {
- return new llvm::AllocaInst(Ty, nullptr, Name, AllocaInsertPt);
+ return new llvm::AllocaInst(Ty, CGM.getDataLayout().getAllocaAddrSpace(),
+ nullptr, Name, AllocaInsertPt);
}
/// CreateDefaultAlignTempAlloca - This creates an alloca with the
Index: lib/CodeGen/CGDecl.cpp
===================================================================
--- lib/CodeGen/CGDecl.cpp
+++ lib/CodeGen/CGDecl.cpp
@@ -1096,7 +1096,8 @@
llvm::Type *llvmTy = ConvertTypeForMem(elementType);
// Allocate memory for the array.
- llvm::AllocaInst *vla = Builder.CreateAlloca(llvmTy, elementCount, "vla");
+ llvm::AllocaInst *vla = Builder.CreateAlloca(CGM.getDataLayout(),
+ llvmTy, elementCount, "vla");
vla->setAlignment(alignment.getQuantity());
address = Address(vla, alignment);
Index: lib/CodeGen/CGCall.cpp
===================================================================
--- lib/CodeGen/CGCall.cpp
+++ lib/CodeGen/CGCall.cpp
@@ -3715,7 +3715,8 @@
llvm::AllocaInst *AI;
if (IP) {
IP = IP->getNextNode();
- AI = new llvm::AllocaInst(ArgStruct, "argmem", IP);
+ AI = new llvm::AllocaInst(ArgStruct,
+ CGM.getDataLayout().getAllocaAddrSpace(), "argmem", IP);
} else {
AI = CreateTempAlloca(ArgStruct, "argmem");
}
Index: lib/CodeGen/CGBuiltin.cpp
===================================================================
--- lib/CodeGen/CGBuiltin.cpp
+++ lib/CodeGen/CGBuiltin.cpp
@@ -1193,7 +1193,8 @@
CGM.getContext()
.toCharUnitsFromBits(TI.getSuitableAlign())
.getQuantity();
- AllocaInst *AI = Builder.CreateAlloca(Builder.getInt8Ty(), Size);
+ AllocaInst *AI = Builder.CreateAlloca(CGM.getDataLayout(),
+ Builder.getInt8Ty(), Size);
AI->setAlignment(SuitableAlignmentInBytes);
return RValue::get(AI);
}
@@ -1205,7 +1206,8 @@
unsigned AlignmentInBits = AlignmentInBitsCI->getZExtValue();
unsigned AlignmentInBytes =
CGM.getContext().toCharUnitsFromBits(AlignmentInBits).getQuantity();
- AllocaInst *AI = Builder.CreateAlloca(Builder.getInt8Ty(), Size);
+ AllocaInst *AI = Builder.CreateAlloca(CGM.getDataLayout(),
+ Builder.getInt8Ty(), Size);
AI->setAlignment(AlignmentInBytes);
return RValue::get(AI);
}
Index: lib/Basic/Targets.cpp
===================================================================
--- lib/Basic/Targets.cpp
+++ lib/Basic/Targets.cpp
@@ -2064,7 +2064,7 @@
static const char *const DataLayoutStringSIGenericIsZero =
"e-p:64:64-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32"
"-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128"
- "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64";
+ "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-A5";
class AMDGPUTargetInfo final : public TargetInfo {
static const Builtin::Info BuiltinInfo[];
@@ -2139,6 +2139,7 @@
(IsGenericZero ? DataLayoutStringSIGenericIsZero :
DataLayoutStringSIPrivateIsZero)
: DataLayoutStringR600);
+ assert(DataLayout->getAllocaAddrSpace() == AS.Private);
AddrSpaceMap = IsGenericZero ? &AMDGPUGenericIsZeroMap :
&AMDGPUPrivateIsZeroMap;
Index: lib/AST/ASTContext.cpp
===================================================================
--- lib/AST/ASTContext.cpp
+++ lib/AST/ASTContext.cpp
@@ -9544,6 +9544,16 @@
return getTargetInfo().getNullPointerValue(AS);
}
+unsigned ASTContext::getTargetAddressSpace(unsigned AS) const {
+ // For OpenCL, the address space qualifier is 0 in AST.
+ if (AS == 0 && LangOpts.OpenCL)
+ return getTargetInfo().getDataLayout().getAllocaAddrSpace();
+ if (AS < LangAS::Offset || AS >= LangAS::Offset + LangAS::Count)
+ return AS;
+ else
+ return (*AddrSpaceMap)[AS - LangAS::Offset];
+}
+
// Explicitly instantiate this in case a Redeclarable<T> is used from a TU that
// doesn't include ASTContext.h
template
Index: include/clang/AST/ASTContext.h
===================================================================
--- include/clang/AST/ASTContext.h
+++ include/clang/AST/ASTContext.h
@@ -2308,12 +2308,7 @@
return getTargetAddressSpace(Q.getAddressSpace());
}
- unsigned getTargetAddressSpace(unsigned AS) const {
- if (AS < LangAS::Offset || AS >= LangAS::Offset + LangAS::Count)
- return AS;
- else
- return (*AddrSpaceMap)[AS - LangAS::Offset];
- }
+ unsigned getTargetAddressSpace(unsigned AS) const;
/// Get target-dependent integer value for null pointer which is used for
/// constant folding.
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