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AMDGPU: Fix crashes on memory functions

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llvm-svn: 278369
This commit is contained in:
Matt Arsenault 2016-08-11 17:31:42 +00:00
parent a7b500f129
commit 7a366c7517
3 changed files with 63 additions and 1 deletions
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3
lib/Target/AMDGPU/AMDGPUSubtarget.cpp
View File

@ -116,7 +116,8 @@ AMDGPUSubtarget::AMDGPUSubtarget(const Triple &TT, StringRef GPU, StringRef FS,
TexVTXClauseSize(0),
FeatureDisable(false),
InstrItins(getInstrItineraryForCPU(GPU)) {
InstrItins(getInstrItineraryForCPU(GPU)),
TSInfo() {
initializeSubtargetDependencies(TT, GPU, FS);
}

7
lib/Target/AMDGPU/AMDGPUSubtarget.h
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@ -24,6 +24,7 @@
#include "SIFrameLowering.h"
#include "Utils/AMDGPUBaseInfo.h"
#include "llvm/CodeGen/GlobalISel/GISelAccessor.h"
#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#define GET_SUBTARGETINFO_HEADER
@ -108,6 +109,7 @@ protected:
bool FeatureDisable;
InstrItineraryData InstrItins;
SelectionDAGTargetInfo TSInfo;
public:
AMDGPUSubtarget(const Triple &TT, StringRef GPU, StringRef FS,
@ -125,6 +127,11 @@ public:
return &InstrItins;
}
// Nothing implemented, just prevent crashes on use.
const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
return &TSInfo;
}
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
bool isAmdHsaOS() const {

54
test/CodeGen/AMDGPU/mem-builtins.ll Normal file
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@ -0,0 +1,54 @@
; RUN: not llc -march=amdgcn -verify-machineinstrs < %s 2>&1 | FileCheck -check-prefix=ERROR %s
declare i32 @memcmp(i8 addrspace(1)* readonly nocapture, i8 addrspace(1)* readonly nocapture, i64) #0
declare i8 addrspace(1)* @memchr(i8 addrspace(1)* readonly nocapture, i32, i64) #1
declare i8* @strcpy(i8* nocapture, i8* readonly nocapture) #0
declare i32 @strlen(i8* nocapture) #1
declare i32 @strnlen(i8* nocapture, i32) #1
declare i32 @strcmp(i8* nocapture, i8* nocapture) #1
; ERROR: error: <unknown>:0:0: in function test_memcmp void (i8 addrspace(1)*, i8 addrspace(1)*, i32*): unsupported call to function memcmp
define void @test_memcmp(i8 addrspace(1)* %x, i8 addrspace(1)* %y, i32* nocapture %p) #0 {
entry:
%cmp = tail call i32 @memcmp(i8 addrspace(1)* %x, i8 addrspace(1)* %y, i64 2)
store volatile i32 %cmp, i32 addrspace(1)* undef
ret void
}
; ERROR: error: <unknown>:0:0: in function test_memchr void (i8 addrspace(1)*, i32, i64): unsupported call to function memchr
define void @test_memchr(i8 addrspace(1)* %src, i32 %char, i64 %len) #0 {
%res = call i8 addrspace(1)* @memchr(i8 addrspace(1)* %src, i32 %char, i64 %len)
store volatile i8 addrspace(1)* %res, i8 addrspace(1)* addrspace(1)* undef
ret void
}
; ERROR: error: <unknown>:0:0: in function test_strcpy void (i8*, i8*): unsupported call to function strcpy
define void @test_strcpy(i8* %dst, i8* %src) #0 {
%res = call i8* @strcpy(i8* %dst, i8* %src)
store volatile i8* %res, i8* addrspace(1)* undef
ret void
}
; ERROR: error: <unknown>:0:0: in function test_strcmp void (i8*, i8*): unsupported call to function strcmp
define void @test_strcmp(i8* %src0, i8* %src1) #0 {
%res = call i32 @strcmp(i8* %src0, i8* %src1)
store volatile i32 %res, i32 addrspace(1)* undef
ret void
}
; ERROR: error: <unknown>:0:0: in function test_strlen void (i8*): unsupported call to function strlen
define void @test_strlen(i8* %src) #0 {
%res = call i32 @strlen(i8* %src)
store volatile i32 %res, i32 addrspace(1)* undef
ret void
}
; ERROR: error: <unknown>:0:0: in function test_strnlen void (i8*, i32): unsupported call to function strnlen
define void @test_strnlen(i8* %src, i32 %size) #0 {
%res = call i32 @strnlen(i8* %src, i32 %size)
store volatile i32 %res, i32 addrspace(1)* undef
ret void
}
attributes #0 = { nounwind }