6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-23 20:29:30 +00:00
Code Issues Projects Releases Wiki Activity

Remove the InstructionSimplifierPass immediately after InstructionCombiningPass.

Browse Source 
InstructionCombiningPass was added after LoopUnrollPass in r237395. Because
InstructionCombiningPass is strictly more powerful than InstructionSimplifierPass,
remove the unnecessary InstructionSimplifierPass.

Differential Revision: http://reviews.llvm.org/D9838


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237702 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Wei Mi 2015-05-19 16:09:11 +00:00
parent 42737039d5
commit 51891f2364
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/Transforms/IPO/PassManagerBuilder.cpp
View File

@ -385,10 +385,6 @@ void PassManagerBuilder::populateModulePassManager(
// LoopUnroll may generate some redundency to cleanup.
MPM.add(createInstructionCombiningPass());
// This is a barrier pass to avoid combine LICM pass and loop unroll pass
// within same loop pass manager.
MPM.add(createInstructionSimplifierPass());
// Runtime unrolling will introduce runtime check in loop prologue. If the
// unrolled loop is a inner loop, then the prologue will be inside the
// outer loop. LICM pass can help to promote the runtime check out if the