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Check all terminators inside loop.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41821 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-09-10 23:57:58 +00:00
parent 75e3bd5bf2
commit ba32a5f3cc
1 changed files with 3 additions and 4 deletions
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7
lib/Transforms/Scalar/LoopIndexSplit.cpp
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@ -379,7 +379,6 @@ void LoopIndexSplit::findSplitCondition() {
SplitInfo SD;
// Check all basic block's terminators.
for (Loop::block_iterator I = L->block_begin(), E = L->block_end();
I != E; ++I) {
BasicBlock *BB = *I;
@ -395,10 +394,10 @@ void LoopIndexSplit::findSplitCondition() {
ICmpInst *CI = dyn_cast<ICmpInst>(BR->getCondition());
if (!CI || CI == ExitCondition)
return;
continue;
if (CI->getPredicate() == ICmpInst::ICMP_NE)
return;
continue;
// If split condition predicate is GT or GE then first execute
// false branch of split condition.
@ -508,7 +507,7 @@ bool LoopIndexSplit::processOneIterationLoop(SplitInfo &SD) {
// SplitCondition : icmp eq i32 IndVar, SplitValue
// into
// c1 = icmp uge i32 SplitValue, StartValue
// c2 = icmp ult i32 vSplitValue, ExitValue
// c2 = icmp ult i32 SplitValue, ExitValue
// and i32 c1, c2
bool SignedPredicate = ExitCondition->isSignedPredicate();
Instruction *C1 = new ICmpInst(SignedPredicate ?