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Global merge for global symbols.

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This commit is to improve global merge pass and support global symbol merge.
The global symbol merge is not enabled by default. For aarch64, we need some
more back-end fix to make it really benifit ADRP CSE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210640 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jiangning Liu
2014-06-11 06:44:53 +00:00
parent 4c3b0b7594
commit f847ccb87a
9 changed files with 284 additions and 75 deletions
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lib/Transforms/Scalar/Scalar.cpp
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@@ -38,6 +38,7 @@ void llvm::initializeScalarOpts(PassRegistry &Registry) {
initializeDSEPass(Registry);
initializeGVNPass(Registry);
initializeEarlyCSEPass(Registry);
initializeGlobalMergePass(Registry);
initializeIndVarSimplifyPass(Registry);
initializeJumpThreadingPass(Registry);
initializeLICMPass(Registry);