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[PM] Run IndirectCallPromotion only when PGO is enabled.

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Differential Revision:  https://reviews.llvm.org/D32465

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301327 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Davide Italiano 2017-04-25 16:54:45 +00:00
parent 65c40b4fba
commit 41042eb456
1 changed files with 9 additions and 9 deletions
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18
lib/Transforms/IPO/PassManagerBuilder.cpp
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@ -282,6 +282,12 @@ void PassManagerBuilder::addPGOInstrPasses(legacy::PassManagerBase &MPM) {
}
if (!PGOInstrUse.empty())
MPM.add(createPGOInstrumentationUseLegacyPass(PGOInstrUse));
// Indirect call promotion that promotes intra-module targets only.
// For ThinLTO this is done earlier due to interactions with globalopt
// for imported functions. We don't run this at -O0.
if (OptLevel > 0)
MPM.add(
createPGOIndirectCallPromotionLegacyPass(false, !PGOSampleUse.empty()));
}
void PassManagerBuilder::addFunctionSimplificationPasses(
legacy::PassManagerBase &MPM) {
@ -471,16 +477,10 @@ void PassManagerBuilder::populateModulePassManager(
// For SamplePGO in ThinLTO compile phase, we do not want to do indirect
// call promotion as it will change the CFG too much to make the 2nd
// profile annotation in backend more difficult.
if (!PerformThinLTO && !PrepareForThinLTOUsingPGOSampleProfile) {
/// PGO instrumentation is added during the compile phase for ThinLTO, do
/// not run it a second time
// PGO instrumentation is added during the compile phase for ThinLTO, do
// not run it a second time
if (!PerformThinLTO && !PrepareForThinLTOUsingPGOSampleProfile)
addPGOInstrPasses(MPM);
// Indirect call promotion that promotes intra-module targets only.
// For ThinLTO this is done earlier due to interactions with globalopt
// for imported functions.
MPM.add(
createPGOIndirectCallPromotionLegacyPass(false, !PGOSampleUse.empty()));
}
if (EnableNonLTOGlobalsModRef)
// We add a module alias analysis pass here. In part due to bugs in the