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Run interprocedural const prop before global optimizer

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Exposes more constant globals that can be removed by
the global optimizer. A specific example is the removal
of the static global block address array in
clang/test/CodeGen/indirect-goto.c. This change impacts only
lower optimization levels. With LTO interprocedural
const prop runs already before global opt.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212284 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gerolf Hoflehner 2014-07-03 19:28:15 +00:00
parent c029b2b785
commit dfb53d227b
1 changed files with 1 additions and 1 deletions
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2
lib/Transforms/IPO/PassManagerBuilder.cpp
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@ -156,9 +156,9 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) {
if (!DisableUnitAtATime) {
addExtensionsToPM(EP_ModuleOptimizerEarly, MPM);
MPM.add(createIPSCCPPass()); // IP SCCP
MPM.add(createGlobalOptimizerPass()); // Optimize out global vars
MPM.add(createIPSCCPPass()); // IP SCCP
MPM.add(createDeadArgEliminationPass()); // Dead argument elimination
MPM.add(createInstructionCombiningPass());// Clean up after IPCP & DAE