6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-14 14:24:05 +00:00
Code Issues Projects Releases Wiki Activity

[InstCombine] re-commit r218721 with fix for pr21199

Browse Source 
The icmp-select-icmp optimization targets select-icmp.eq
only. This is now ensured by testing the branch predicate
explictly. This commit also includes the test case for pr21199.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219282 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gerolf Hoflehner
2014-10-08 06:42:19 +00:00
parent 1fa70c99dc
commit f8b5847bc4
6 changed files with 300 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Transforms/InstCombine/InstructionCombining.cpp
View File

@ -90,6 +90,7 @@ INITIALIZE_PASS_BEGIN(InstCombiner, "instcombine",
"Combine redundant instructions", false, false)
INITIALIZE_PASS_DEPENDENCY(AssumptionTracker)
INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfo)
INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
INITIALIZE_PASS_END(InstCombiner, "instcombine",
"Combine redundant instructions", false, false)
@ -97,6 +98,8 @@ void InstCombiner::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addRequired<AssumptionTracker>();
AU.addRequired<TargetLibraryInfo>();
AU.addRequired<DominatorTreeWrapperPass>();
AU.addPreserved<DominatorTreeWrapperPass>();
}
@ -2933,12 +2936,9 @@ bool InstCombiner::runOnFunction(Function &F) {
AT = &getAnalysis<AssumptionTracker>();
DataLayoutPass *DLP = getAnalysisIfAvailable<DataLayoutPass>();
DL = DLP ? &DLP->getDataLayout() : nullptr;
DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
TLI = &getAnalysis<TargetLibraryInfo>();
DominatorTreeWrapperPass *DTWP =
getAnalysisIfAvailable<DominatorTreeWrapperPass>();
DT = DTWP ? &DTWP->getDomTree() : nullptr;
// Minimizing size?
MinimizeSize = F.getAttributes().hasAttribute(AttributeSet::FunctionIndex,
Attribute::MinSize);