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| author | Sanjay Patel <spatel@rotateright.com> | 2017-12-14 22:05:20 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2017-12-14 22:05:20 +0000 |
| commit | 0ab0c1a201ece292fdced1f913fa257bdcb5280f (patch) | |
| tree | e896fb6f22c7ce9f2106707b0796e7cab2c2c59e /llvm/lib/Target/AArch64/AArch64TargetMachine.cpp | |
| parent | 34ccadcea9eba33d2e410b2af843a3da602611bf (diff) | |
| download | bcm5719-llvm-0ab0c1a201ece292fdced1f913fa257bdcb5280f.tar.gz bcm5719-llvm-0ab0c1a201ece292fdced1f913fa257bdcb5280f.zip | |
[SimplifyCFG] don't sink common insts too soon (PR34603)
This should solve:
https://bugs.llvm.org/show_bug.cgi?id=34603
...by preventing SimplifyCFG from altering redundant instructions before early-cse has a chance to run.
It changes the default (canonical-forming) behavior of SimplifyCFG, so we're only doing the
sinking transform later in the optimization pipeline.
Differential Revision: https://reviews.llvm.org/D38566
llvm-svn: 320749
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64TargetMachine.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64TargetMachine.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp b/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp index 21b8bfff52c..64583ead73f 100644 --- a/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp +++ b/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp @@ -365,7 +365,7 @@ void AArch64PassConfig::addIRPasses() { // determine whether it succeeded. We can exploit existing control-flow in // ldrex/strex loops to simplify this, but it needs tidying up. if (TM->getOptLevel() != CodeGenOpt::None && EnableAtomicTidy) - addPass(createCFGSimplificationPass(1, true, true, false)); + addPass(createCFGSimplificationPass(1, true, true, false, true)); // Run LoopDataPrefetch // |
