diff options
| author | Chandler Carruth <chandlerc@gmail.com> | 2017-04-27 00:28:03 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2017-04-27 00:28:03 +0000 |
| commit | bde56a96995a329cf1df5716b1f84b32aac6c174 (patch) | |
| tree | 79121a91f109e6b5efc23d401dcf78f9af6e7828 /lib/Passes | |
| parent | 9d291ed9adc63a55b343a706315971410adb7136 (diff) | |
Disable GVN Hoist due to still more bugs being found in it. There is
also a discussion about exactly what we should do prior to re-enabling
it.
The current bug is http://llvm.org/PR32821 and the discussion about this
is in the review thread for r300200.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301505 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Passes')
| -rw-r--r-- | lib/Passes/PassBuilder.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Passes/PassBuilder.cpp b/lib/Passes/PassBuilder.cpp index 55ac2541948e..0feb51fa9dc7 100644 --- a/lib/Passes/PassBuilder.cpp +++ b/lib/Passes/PassBuilder.cpp @@ -150,6 +150,10 @@ using namespace llvm; static cl::opt<unsigned> MaxDevirtIterations("pm-max-devirt-iterations", cl::ReallyHidden, cl::init(4)); +static cl::opt<bool> EnableGVNHoist( + "enable-npm-gvn-hoist", cl::init(false), cl::Hidden, + cl::desc("Enable the GVN hoisting pass for the new PM (default = off)")); + static Regex DefaultAliasRegex("^(default|lto-pre-link|lto)<(O[0123sz])>$"); static bool isOptimizingForSize(PassBuilder::OptimizationLevel Level) { @@ -454,7 +458,8 @@ PassBuilder::buildPerModuleDefaultPipeline(OptimizationLevel Level, EarlyFPM.addPass(SROA()); EarlyFPM.addPass(EarlyCSEPass()); EarlyFPM.addPass(LowerExpectIntrinsicPass()); - EarlyFPM.addPass(GVNHoistPass()); + if (EnableGVNHoist) + EarlyFPM.addPass(GVNHoistPass()); MPM.addPass(createModuleToFunctionPassAdaptor(std::move(EarlyFPM))); // Interprocedural constant propagation now that basic cleanup has occured |