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AMDGPU: Error on stack size overflow

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318189 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2017-11-14 20:33:14 +00:00
parent 2bcdf1ebc9
commit 96ce9ffb7d
3 changed files with 26 additions and 6 deletions
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12
lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
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@ -262,7 +262,7 @@ void AMDGPUAsmPrinter::readPALMetadata(Module &M) {
void AMDGPUAsmPrinter::emitCommonFunctionComments(
uint32_t NumVGPR,
uint32_t NumSGPR,
uint32_t ScratchSize,
uint64_t ScratchSize,
uint64_t CodeSize) {
OutStreamer->emitRawComment(" codeLenInByte = " + Twine(CodeSize), false);
OutStreamer->emitRawComment(" NumSgprs: " + Twine(NumSGPR), false);
@ -600,7 +600,7 @@ AMDGPUAsmPrinter::SIFunctionResourceInfo AMDGPUAsmPrinter::analyzeResourceUsage(
int32_t MaxVGPR = -1;
int32_t MaxSGPR = -1;
uint32_t CalleeFrameSize = 0;
uint64_t CalleeFrameSize = 0;
for (const MachineBasicBlock &MBB : MF) {
for (const MachineInstr &MI : MBB) {
@ -718,7 +718,7 @@ AMDGPUAsmPrinter::SIFunctionResourceInfo AMDGPUAsmPrinter::analyzeResourceUsage(
MaxSGPR = std::max(MaxSGPR, MaxSGPRGuess);
MaxVGPR = std::max(MaxVGPR, 23);
CalleeFrameSize = std::max(CalleeFrameSize, 16384u);
CalleeFrameSize = std::max(CalleeFrameSize, UINT64_C(16384));
Info.UsesVCC = true;
Info.UsesFlatScratch = ST.hasFlatAddressSpace();
Info.HasDynamicallySizedStack = true;
@ -763,6 +763,12 @@ void AMDGPUAsmPrinter::getSIProgramInfo(SIProgramInfo &ProgInfo,
ProgInfo.FlatUsed = Info.UsesFlatScratch;
ProgInfo.DynamicCallStack = Info.HasDynamicallySizedStack || Info.HasRecursion;
if (!isUInt<32>(ProgInfo.ScratchSize)) {
DiagnosticInfoStackSize DiagStackSize(*MF.getFunction(),
ProgInfo.ScratchSize, DS_Error);
MF.getFunction()->getContext().diagnose(DiagStackSize);
}
const SISubtarget &STM = MF.getSubtarget<SISubtarget>();
const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
const SIInstrInfo *TII = STM.getInstrInfo();

6
lib/Target/AMDGPU/AMDGPUAsmPrinter.h
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@ -41,7 +41,7 @@ private:
// the end are tracked separately.
int32_t NumVGPR = 0;
int32_t NumExplicitSGPR = 0;
uint32_t PrivateSegmentSize = 0;
uint64_t PrivateSegmentSize = 0;
bool UsesVCC = false;
bool UsesFlatScratch = false;
bool HasDynamicallySizedStack = false;
@ -61,7 +61,7 @@ private:
uint32_t DX10Clamp = 0;
uint32_t DebugMode = 0;
uint32_t IEEEMode = 0;
uint32_t ScratchSize = 0;
uint64_t ScratchSize = 0;
uint64_t ComputePGMRSrc1 = 0;
@ -144,7 +144,7 @@ private:
const SIProgramInfo &KernelInfo);
void emitCommonFunctionComments(uint32_t NumVGPR,
uint32_t NumSGPR,
uint32_t ScratchSize,
uint64_t ScratchSize,
uint64_t CodeSize);
public:

14
test/CodeGen/AMDGPU/stack-size-overflow.ll Normal file
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@ -0,0 +1,14 @@
; RUN: not llc -march=amdgcn < %s 2>&1 | FileCheck -check-prefix=ERROR %s
; RUN: not llc -march=amdgcn < %s | FileCheck -check-prefix=GCN %s
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) #1
; ERROR: error: stack size limit exceeded (4294967296) in stack_size_limit
; GCN: ; ScratchSize: 4294967296
define amdgpu_kernel void @stack_size_limit() #0 {
entry:
%alloca = alloca [1073741823 x i32], align 4
%bc = bitcast [1073741823 x i32]* %alloca to i8*
call void @llvm.memset.p0i8.i32(i8* %bc, i8 9, i32 1073741823, i32 1, i1 true)
ret void
}