maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Give ScalarEvolution access to the DominatorTree. It'll need this 

to make more intellegent AddRec folding decisions.

llvm-svn: 93930
This commit is contained in:
Dan Gohman 2010-01-19 22:21:27 +00:00
parent eaef5e111d
commit f86d904b7d
2 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
llvm/include/llvm/Analysis/ScalarEvolution.h
View File

@ -181,6 +181,10 @@ namespace llvm {
///
TargetData *TD;
/// DT - The dominator tree.
///
DominatorTree *DT;
/// CouldNotCompute - This SCEV is used to represent unknown trip
/// counts and things.
SCEVCouldNotCompute CouldNotCompute;

2
llvm/lib/Analysis/ScalarEvolution.cpp
View File

@ -5167,6 +5167,7 @@ ScalarEvolution::ScalarEvolution()
bool ScalarEvolution::runOnFunction(Function &F) {
this->F = &F;
LI = &getAnalysis<LoopInfo>();
DT = &getAnalysis<DominatorTree>();
TD = getAnalysisIfAvailable<TargetData>();
return false;
}
@ -5183,6 +5184,7 @@ void ScalarEvolution::releaseMemory() {
void ScalarEvolution::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequiredTransitive<LoopInfo>();
AU.addRequiredTransitive<DominatorTree>();
}
bool ScalarEvolution::hasLoopInvariantBackedgeTakenCount(const Loop *L) {