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The code extractor needs dominator info. Provide it

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12483 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-03-18 03:48:06 +00:00
parent 268316ee14
commit 369287bab5
1 changed files with 7 additions and 3 deletions
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10
lib/Transforms/IPO/LoopExtractor.cpp
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@ -18,6 +18,7 @@
#include "llvm/iTerminators.h"
#include "llvm/Module.h"
#include "llvm/Pass.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/FunctionUtils.h"
@ -35,6 +36,7 @@ namespace {
virtual bool runOnFunction(Function &F);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<DominatorSet>();
AU.addRequired<LoopInfo>();
AU.addRequiredID(LoopSimplifyID);
}
@ -59,6 +61,8 @@ bool LoopExtractor::runOnFunction(Function &F) {
if (LI.begin() == LI.end())
return false;
DominatorSet &DS = getAnalysis<DominatorSet>();
// If there is more than one top-level loop in this function, extract all of
// the loops.
bool Changed = false;
@ -66,7 +70,7 @@ bool LoopExtractor::runOnFunction(Function &F) {
for (LoopInfo::iterator i = LI.begin(), e = LI.end(); i != e; ++i) {
if (NumLoops == 0) return Changed;
--NumLoops;
Changed |= (ExtractLoop(*i) != 0);
Changed |= ExtractLoop(DS, *i) != 0;
}
} else {
// Otherwise there is exactly one top-level loop. If this function is more
@ -93,7 +97,7 @@ bool LoopExtractor::runOnFunction(Function &F) {
if (ShouldExtractLoop) {
if (NumLoops == 0) return Changed;
--NumLoops;
Changed |= (ExtractLoop(TLL) != 0);
Changed |= ExtractLoop(DS, TLL) != 0;
} else {
// Okay, this function is a minimal container around the specified loop.
// If we extract the loop, we will continue to just keep extracting it
@ -102,7 +106,7 @@ bool LoopExtractor::runOnFunction(Function &F) {
for (Loop::iterator i = TLL->begin(), e = TLL->end(); i != e; ++i) {
if (NumLoops == 0) return Changed;
--NumLoops;
Changed |= (ExtractLoop(*i) != 0);
Changed |= ExtractLoop(DS, *i) != 0;
}
}
}