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| author | Tim Northover <tnorthover@apple.com> | 2014-06-13 16:45:36 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2014-06-13 16:45:36 +0000 |
| commit | d039abdeeb2ac2476277c275ed4065440ef1fbb0 (patch) | |
| tree | ae41cbcc1c1076e12eaa97d2c62197e97c1449ad /llvm/lib/CodeGen | |
| parent | bc5b5370de681de16e290a1dd822ee87ee4a8583 (diff) | |
| download | bcm5719-llvm-d039abdeeb2ac2476277c275ed4065440ef1fbb0.tar.gz bcm5719-llvm-d039abdeeb2ac2476277c275ed4065440ef1fbb0.zip | |
Atomics: switch direction of cmpxchg comparison
This has two benefits: it makes the result more suitable for direct
insertaion into the struct to emulate the new cmpxchg, and it means
the name we give the instruction matches its actual effect better.
llvm-svn: 210916
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp b/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp index 6f93ced85b0..6d66e56d426 100644 --- a/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp +++ b/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp @@ -283,9 +283,9 @@ bool AtomicExpandLoadLinked::expandAtomicCmpXchg(AtomicCmpXchgInst *CI) { Builder.SetInsertPoint(TryStoreBB); Value *StoreSuccess = TLI->emitStoreConditional( Builder, CI->getNewValOperand(), Addr, MemOpOrder); - Value *TryAgain = Builder.CreateICmpNE( + StoreSuccess = Builder.CreateICmpEQ( StoreSuccess, ConstantInt::get(Type::getInt32Ty(Ctx), 0), "success"); - Builder.CreateCondBr(TryAgain, LoopBB, BarrierBB); + Builder.CreateCondBr(StoreSuccess, BarrierBB, LoopBB); // Make sure later instructions don't get reordered with a fence if necessary. Builder.SetInsertPoint(BarrierBB); |
