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Fix an obvious typo which caused an isel assertion. rdar://8964854. 

llvm-svn: 125023
This commit is contained in:
Evan Cheng 2011-02-07 18:50:47 +00:00
parent 93be3f75cc
commit e1a4ac9b5b
2 changed files with 18 additions and 1 deletions
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2
llvm/lib/Target/ARM/ARMISelLowering.cpp
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@ -4344,7 +4344,7 @@ ARMTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
default: llvm_unreachable("unsupported size for AtomicCmpSwap!");
case 1:
ldrOpc = isThumb2 ? ARM::t2LDREXB : ARM::LDREXB;
strOpc = isThumb2 ? ARM::t2LDREXB : ARM::STREXB;
strOpc = isThumb2 ? ARM::t2STREXB : ARM::STREXB;
break;
case 2:
ldrOpc = isThumb2 ? ARM::t2LDREXH : ARM::LDREXH;

17
llvm/test/CodeGen/ARM/atomic-cmp.ll Normal file
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@ -0,0 +1,17 @@
; RUN: llc < %s -mtriple=armv7-apple-darwin | FileCheck %s -check-prefix=ARM
; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s -check-prefix=T2
; rdar://8964854
define i8 @t(i8* %a, i8 %b, i8 %c) nounwind {
; ARM: t:
; ARM: ldrexb
; ARM: strexb
; T2: t:
; T2: ldrexb
; T2: strexb
%tmp0 = tail call i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* %a, i8 %b, i8 %c)
ret i8 %tmp0
}
declare i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* nocapture, i8, i8) nounwind