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[AMDGPU] Set the default globals address space to 1 

This will ensure that passes that add new global variables will create them
in address space 1 once the passes have been updated to no longer default
to the implicit address space zero.
This also changes AutoUpgrade.cpp to add -G1 to the DataLayout if it wasn't
already to present to ensure bitcode backwards compatibility.

Reviewed by: arsenm

Differential Revision: https://reviews.llvm.org/D84345
This commit is contained in:
Alex Richardson 2020-07-22 14:41:06 +01:00
parent 3bc4157556
commit 51e09e1d5a
11 changed files with 57 additions and 31 deletions
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4
clang/lib/Basic/Targets/AMDGPU.cpp
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@ -31,12 +31,12 @@ namespace targets {
static const char *const DataLayoutStringR600 =
"e-p: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-S32-A5";
"-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1";
static const char *const DataLayoutStringAMDGCN =
"e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32"
"-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128"
"-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5"
"-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1"
"-ni:7";
const LangASMap AMDGPUTargetInfo::AMDGPUDefIsGenMap = {

12
clang/lib/CodeGen/CGClass.cpp
View File

@ -2508,12 +2508,16 @@ void CodeGenFunction::InitializeVTablePointer(const VPtr &Vptr) {
// Finally, store the address point. Use the same LLVM types as the field to
// support optimization.
unsigned GlobalsAS = CGM.getDataLayout().getDefaultGlobalsAddressSpace();
unsigned ProgAS = CGM.getDataLayout().getProgramAddressSpace();
llvm::Type *VTablePtrTy =
llvm::FunctionType::get(CGM.Int32Ty, /*isVarArg=*/true)
->getPointerTo()
->getPointerTo();
VTableField = Builder.CreateBitCast(VTableField, VTablePtrTy->getPointerTo());
VTableAddressPoint = Builder.CreateBitCast(VTableAddressPoint, VTablePtrTy);
->getPointerTo(ProgAS)
->getPointerTo(GlobalsAS);
VTableField = Builder.CreatePointerBitCastOrAddrSpaceCast(
VTableField, VTablePtrTy->getPointerTo(GlobalsAS));
VTableAddressPoint = Builder.CreatePointerBitCastOrAddrSpaceCast(
VTableAddressPoint, VTablePtrTy);
llvm::StoreInst *Store = Builder.CreateStore(VTableAddressPoint, VTableField);
TBAAAccessInfo TBAAInfo = CGM.getTBAAVTablePtrAccessInfo(VTablePtrTy);

11
clang/lib/CodeGen/CGOpenMPRuntime.cpp
View File

@ -3075,11 +3075,12 @@ void CGOpenMPRuntime::createOffloadEntry(
llvm::GlobalValue::InternalLinkage, StrPtrInit, StringName);
Str->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
llvm::Constant *Data[] = {llvm::ConstantExpr::getBitCast(ID, CGM.VoidPtrTy),
llvm::ConstantExpr::getBitCast(Str, CGM.Int8PtrTy),
llvm::ConstantInt::get(CGM.SizeTy, Size),
llvm::ConstantInt::get(CGM.Int32Ty, Flags),
llvm::ConstantInt::get(CGM.Int32Ty, 0)};
llvm::Constant *Data[] = {
llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(ID, CGM.VoidPtrTy),
llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(Str, CGM.Int8PtrTy),
llvm::ConstantInt::get(CGM.SizeTy, Size),
llvm::ConstantInt::get(CGM.Int32Ty, Flags),
llvm::ConstantInt::get(CGM.Int32Ty, 0)};
std::string EntryName = getName({"omp_offloading", "entry", ""});
llvm::GlobalVariable *Entry = createGlobalStruct(
CGM, getTgtOffloadEntryQTy(), /*IsConstant=*/true, Data,

13
clang/lib/CodeGen/CGVTT.cpp
View File

@ -42,10 +42,8 @@ CodeGenVTables::EmitVTTDefinition(llvm::GlobalVariable *VTT,
llvm::GlobalVariable::LinkageTypes Linkage,
const CXXRecordDecl *RD) {
VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/true);
llvm::Type *Int8PtrTy = CGM.Int8PtrTy, *Int32Ty = CGM.Int32Ty;
llvm::ArrayType *ArrayType =
llvm::ArrayType::get(Int8PtrTy, Builder.getVTTComponents().size());
llvm::ArrayType::get(CGM.Int8PtrTy, Builder.getVTTComponents().size());
SmallVector<llvm::GlobalVariable *, 8> VTables;
SmallVector<VTableAddressPointsMapTy, 8> VTableAddressPoints;
@ -74,16 +72,17 @@ CodeGenVTables::EmitVTTDefinition(llvm::GlobalVariable *VTT,
}
llvm::Value *Idxs[] = {
llvm::ConstantInt::get(Int32Ty, 0),
llvm::ConstantInt::get(Int32Ty, AddressPoint.VTableIndex),
llvm::ConstantInt::get(Int32Ty, AddressPoint.AddressPointIndex),
llvm::ConstantInt::get(CGM.Int32Ty, 0),
llvm::ConstantInt::get(CGM.Int32Ty, AddressPoint.VTableIndex),
llvm::ConstantInt::get(CGM.Int32Ty, AddressPoint.AddressPointIndex),
};
llvm::Constant *Init = llvm::ConstantExpr::getGetElementPtr(
VTable->getValueType(), VTable, Idxs, /*InBounds=*/true,
/*InRangeIndex=*/1);
Init = llvm::ConstantExpr::getBitCast(Init, Int8PtrTy);
Init = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(Init,
CGM.Int8PtrTy);
VTTComponents.push_back(Init);
}

3
clang/lib/CodeGen/ItaniumCXXABI.cpp
View File

@ -2331,7 +2331,8 @@ void ItaniumCXXABI::EmitGuardedInit(CodeGenFunction &CGF,
CGM.getDataLayout().getABITypeAlignment(guardTy));
}
}
llvm::PointerType *guardPtrTy = guardTy->getPointerTo();
llvm::PointerType *guardPtrTy = guardTy->getPointerTo(
CGF.CGM.getDataLayout().getDefaultGlobalsAddressSpace());
// Create the guard variable if we don't already have it (as we
// might if we're double-emitting this function body).

8
clang/test/CodeGen/target-data.c
View File

@ -168,20 +168,20 @@
// RUN: %clang_cc1 -triple r600-unknown -o - -emit-llvm %s | \
// RUN: FileCheck %s -check-prefix=R600
// R600: target datalayout = "e-p: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-S32-A5"
// R600: target datalayout = "e-p: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-S32-A5-G1"
// RUN: %clang_cc1 -triple r600-unknown -target-cpu cayman -o - -emit-llvm %s \
// RUN: | FileCheck %s -check-prefix=R600D
// R600D: target datalayout = "e-p: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-S32-A5"
// R600D: target datalayout = "e-p: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-S32-A5-G1"
// RUN: %clang_cc1 -triple amdgcn-unknown -target-cpu hawaii -o - -emit-llvm %s \
// RUN: | FileCheck %s -check-prefix=R600SI
// R600SI: target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-ni:7"
// R600SI: target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7"
// Test default -target-cpu
// RUN: %clang_cc1 -triple amdgcn-unknown -o - -emit-llvm %s \
// RUN: | FileCheck %s -check-prefix=R600SIDefault
// R600SIDefault: target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-ni:7"
// R600SIDefault: target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7"
// RUN: %clang_cc1 -triple arm64-unknown -o - -emit-llvm %s | \
// RUN: FileCheck %s -check-prefix=AARCH64

2
clang/test/CodeGenOpenCL/amdgpu-env-amdgcn.cl
View File

@ -1,5 +1,5 @@
// RUN: %clang_cc1 %s -O0 -triple amdgcn -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 %s -O0 -triple amdgcn---opencl -emit-llvm -o - | FileCheck %s
// CHECK: target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-ni:7"
// CHECK: target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7"
void foo(void) {}

2
llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
View File

@ -215,7 +215,7 @@ Value *OpenMPIRBuilder::getOrCreateIdent(Constant *SrcLocStr,
GV->setAlignment(Align(8));
Ident = GV;
}
return Ident;
return Builder.CreatePointerCast(Ident, IdentPtr);
}
Type *OpenMPIRBuilder::getLanemaskType() {

10
llvm/lib/IR/AutoUpgrade.cpp
View File

@ -4380,11 +4380,17 @@ MDNode *llvm::upgradeInstructionLoopAttachment(MDNode &N) {
}
std::string llvm::UpgradeDataLayoutString(StringRef DL, StringRef TT) {
StringRef AddrSpaces = "-p270:32:32-p271:32:32-p272:64:64";
Triple T(TT);
// For AMDGPU we uprgrade older DataLayouts to include the default globals
// address space of 1.
if (T.isAMDGPU() && !DL.contains("-G") && !DL.startswith("G")) {
return DL.empty() ? std::string("G1") : (DL + "-G1").str();
}
std::string AddrSpaces = "-p270:32:32-p271:32:32-p272:64:64";
// If X86, and the datalayout matches the expected format, add pointer size
// address spaces to the datalayout.
if (!Triple(TT).isX86() || DL.contains(AddrSpaces))
if (!T.isX86() || DL.contains(AddrSpaces))
return std::string(DL);
SmallVector<StringRef, 4> Groups;

8
llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
View File

@ -342,15 +342,15 @@ GCNILPSchedRegistry("gcn-ilp",
static StringRef computeDataLayout(const Triple &TT) {
if (TT.getArch() == Triple::r600) {
// 32-bit pointers.
return "e-p: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-S32-A5";
return "e-p: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-S32-A5-G1";
}
// 32-bit private, local, and region pointers. 64-bit global, constant and
// flat, non-integral buffer fat pointers.
return "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32"
return "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32"
"-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128"
"-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5"
"-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1"
"-ni:7";
}

15
llvm/unittests/Bitcode/DataLayoutUpgradeTest.cpp
View File

@ -27,6 +27,10 @@ TEST(DataLayoutUpgradeTest, ValidDataLayoutUpgrade) {
"-f80:32-n8:16:32-S32");
EXPECT_EQ(DL3, "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128"
"-n32:64-S128");
// Check that AMDGPU targets add -G1 if it's not present.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "r600"), "e-p:32:32-G1");
EXPECT_EQ(UpgradeDataLayoutString("e-p:64:64", "amdgcn"), "e-p:64:64-G1");
}
TEST(DataLayoutUpgradeTest, NoDataLayoutUpgrade) {
@ -46,6 +50,13 @@ TEST(DataLayoutUpgradeTest, NoDataLayoutUpgrade) {
EXPECT_EQ(DL2, "e-p:32:32");
EXPECT_EQ(DL3, "e-m:e-i64:64-n32:64");
EXPECT_EQ(DL4, "e-m:o-i64:64-i128:128-n32:64-S128");
// Check that AMDGPU targets don't add -G1 if there is already a -G flag.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32-G2", "r600"), "e-p:32:32-G2");
EXPECT_EQ(UpgradeDataLayoutString("G2", "r600"), "G2");
EXPECT_EQ(UpgradeDataLayoutString("e-p:64:64-G2", "amdgcn"), "e-p:64:64-G2");
EXPECT_EQ(UpgradeDataLayoutString("G2-e-p:64:64", "amdgcn"), "G2-e-p:64:64");
EXPECT_EQ(UpgradeDataLayoutString("e-p:64:64-G0", "amdgcn"), "e-p:64:64-G0");
}
TEST(DataLayoutUpgradeTest, EmptyDataLayout) {
@ -54,6 +65,10 @@ TEST(DataLayoutUpgradeTest, EmptyDataLayout) {
"e-m:e-p:32:32-i64:64-f80:128-n8:16:32:64-S128", "");
EXPECT_EQ(DL1, "");
EXPECT_EQ(DL2, "e-m:e-p:32:32-i64:64-f80:128-n8:16:32:64-S128");
// Check that AMDGPU targets add G1 if it's not present.
EXPECT_EQ(UpgradeDataLayoutString("", "r600"), "G1");
EXPECT_EQ(UpgradeDataLayoutString("", "amdgcn"), "G1");
}
} // end namespace