6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-09-30 19:55:11 +00:00
Code Issues Projects Releases Wiki Activity

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

Browse Source 
to make more intellegent AddRec folding decisions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93930 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-01-19 22:21:27 +00:00
parent 09ce674ce8
commit 1cd9275c8d
2 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
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
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) {