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| author | Tim Shen <timshen91@gmail.com> | 2017-05-30 22:26:52 +0000 |
|---|---|---|
| committer | Tim Shen <timshen91@gmail.com> | 2017-05-30 22:26:52 +0000 |
| commit | 0bd0aa8f0742eec2c263095d3f7b459372364041 (patch) | |
| tree | 3b404006698efbe1a50574126112a6a557a91041 /llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp | |
| parent | d276d85309f373f4482dbf8996f734d9f2f496c3 (diff) | |
| download | bcm5719-llvm-0bd0aa8f0742eec2c263095d3f7b459372364041.tar.gz bcm5719-llvm-0bd0aa8f0742eec2c263095d3f7b459372364041.zip | |
[AntiDepBreaker] Revert r299124 and add a test.
Summary:
AntiDepBreaker intends to add all live-outs, including the implicit
CSRs, in StartBlock. r299124 was done without understanding that
intention.
Now with the live-ins propagated correctly (D32464), we can revert this change.
Reviewers: MatzeB, qcolombet
Subscribers: nemanjai, llvm-commits
Differential Revision: https://reviews.llvm.org/D33697
llvm-svn: 304251
Diffstat (limited to 'llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp index 43b245c6640..5abf50e5bd1 100644 --- a/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp +++ b/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp @@ -165,7 +165,7 @@ void AggressiveAntiDepBreaker::StartBlock(MachineBasicBlock *BB) { for (const MCPhysReg *I = MF.getRegInfo().getCalleeSavedRegs(); *I; ++I) { unsigned Reg = *I; - if (!IsReturnBlock && !(Pristine.test(Reg) || BB->isLiveIn(Reg))) + if (!IsReturnBlock && !Pristine.test(Reg)) continue; for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) { unsigned AliasReg = *AI; |
