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AMDGPU: Error if branch distance exceeds limit

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llvm-svn: 269951
This commit is contained in:
Matt Arsenault 2016-05-18 16:10:24 +00:00
parent 41311e20a0
commit 326d5c727c
1 changed files with 5 additions and 1 deletions
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6
lib/Target/AMDGPU/MCTargetDesc/AMDGPUAsmBackend.cpp
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@ -96,8 +96,12 @@ void AMDGPUAsmBackend::applyFixup(const MCFixup &Fixup, char *Data,
switch ((unsigned)Fixup.getKind()) {
case AMDGPU::fixup_si_sopp_br: {
int64_t BrImm = (Value - 4) / 4;
if (!isInt<16>(BrImm))
report_fatal_error("branch size exceeds simm16");
uint16_t *Dst = (uint16_t*)(Data + Fixup.getOffset());
*Dst = (Value - 4) / 4;
*Dst = BrImm;
break;
}