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AMDGPU: Emit note directive for HSA even if there are no functions 

Reviewers: arsenm, echristo

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D16010

llvm-svn: 257488
This commit is contained in:
Tom Stellard 2016-01-12 17:18:17 +00:00
parent 029d0b7328
commit f421837250
3 changed files with 27 additions and 7 deletions
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26
llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
View File

@ -91,6 +91,25 @@ AMDGPUAsmPrinter::AMDGPUAsmPrinter(TargetMachine &TM,
std::unique_ptr<MCStreamer> Streamer)
: AsmPrinter(TM, std::move(Streamer)) {}
void AMDGPUAsmPrinter::EmitStartOfAsmFile(Module &M) {
if (TM.getTargetTriple().getOS() != Triple::AMDHSA)
return;
// Need to construct an MCSubtargetInfo here in case we have no functions
// in the module.
std::unique_ptr<MCSubtargetInfo> STI(TM.getTarget().createMCSubtargetInfo(
TM.getTargetTriple().str(), TM.getTargetCPU(),
TM.getTargetFeatureString()));
AMDGPUTargetStreamer *TS =
static_cast<AMDGPUTargetStreamer *>(OutStreamer->getTargetStreamer());
TS->EmitDirectiveHSACodeObjectVersion(1, 0);
AMDGPU::IsaVersion ISA = AMDGPU::getIsaVersion(STI->getFeatureBits());
TS->EmitDirectiveHSACodeObjectISA(ISA.Major, ISA.Minor, ISA.Stepping,
"AMD", "AMDGPU");
}
void AMDGPUAsmPrinter::EmitFunctionBodyStart() {
const AMDGPUSubtarget &STM = MF->getSubtarget<AMDGPUSubtarget>();
SIProgramInfo KernelInfo;
@ -182,13 +201,6 @@ bool AMDGPUAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
if (!STM.isAmdHsaOS()) {
EmitProgramInfoSI(MF, KernelInfo);
}
// Emit directives
AMDGPUTargetStreamer *TS =
static_cast<AMDGPUTargetStreamer *>(OutStreamer->getTargetStreamer());
TS->EmitDirectiveHSACodeObjectVersion(1, 0);
AMDGPU::IsaVersion ISA = STM.getIsaVersion();
TS->EmitDirectiveHSACodeObjectISA(ISA.Major, ISA.Minor, ISA.Stepping,
"AMD", "AMDGPU");
} else {
EmitProgramInfoR600(MF);
}

2
llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
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@ -103,6 +103,8 @@ public:
void EmitGlobalVariable(const GlobalVariable *GV) override;
void EmitStartOfAsmFile(Module &M) override;
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &O) override;

6
llvm/test/CodeGen/AMDGPU/hsa-note-no-func.ll Normal file
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@ -0,0 +1,6 @@
; RUN: llc < %s -mtriple=amdgcn--amdhsa -mcpu=kaveri | FileCheck --check-prefix=HSA --check-prefix=HSA-CI %s
; RUN: llc < %s -mtriple=amdgcn--amdhsa -mcpu=carrizo | FileCheck --check-prefix=HSA --check-prefix=HSA-VI %s
; HSA: .hsa_code_object_version 1,0
; HSA-CI: .hsa_code_object_isa 7,0,0,"AMD","AMDGPU"
; HSA-VI: .hsa_code_object_isa 8,0,1,"AMD","AMDGPU"