instcombine to clean up the code, which makes more code suitable for SRoA.
This helps C++ code in particular, e.g. speeding up tramp3d by 31%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33235
91177308-0d34-0410-b5e6-
96231b3b80d8
addPass(PM, createRaisePointerReferencesPass());// Recover type information
addPass(PM, createTailDuplicationPass()); // Simplify cfg by copying code
+ addPass(PM, createInstructionCombiningPass()); // Cleanup for scalarrepl.
addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
addPass(PM, createScalarReplAggregatesPass()); // Break up aggregate allocas
addPass(PM, createInstructionCombiningPass()); // Combine silly seq's