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For PR950:

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This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2006-12-23 06:05:41 +00:00
parent add2bd7f59
commit e4d87aa2de
87 changed files with 8093 additions and 6620 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Analysis/LoopInfo.cpp
+10 -8
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@@ -536,7 +536,7 @@ Instruction *Loop::getCanonicalInductionVariableIncrement() const {
/// returns null.
///
Value *Loop::getTripCount() const {
// Canonical loops will end with a 'setne I, V', where I is the incremented
// Canonical loops will end with a 'cmp ne I, V', where I is the incremented
// canonical induction variable and V is the trip count of the loop.
Instruction *Inc = getCanonicalInductionVariableIncrement();
if (Inc == 0) return 0;
@@ -546,15 +546,17 @@ Value *Loop::getTripCount() const {
IV->getIncomingBlock(contains(IV->getIncomingBlock(1)));
if (BranchInst *BI = dyn_cast<BranchInst>(BackedgeBlock->getTerminator()))
if (BI->isConditional())
if (SetCondInst *SCI = dyn_cast<SetCondInst>(BI->getCondition()))
if (SCI->getOperand(0) == Inc)
if (BI->isConditional()) {
if (ICmpInst *ICI = dyn_cast<ICmpInst>(BI->getCondition())) {
if (ICI->getOperand(0) == Inc)
if (BI->getSuccessor(0) == getHeader()) {
if (SCI->getOpcode() == Instruction::SetNE)
return SCI->getOperand(1);
} else if (SCI->getOpcode() == Instruction::SetEQ) {
return SCI->getOperand(1);
if (ICI->getPredicate() == ICmpInst::ICMP_NE)
return ICI->getOperand(1);
} else if (ICI->getPredicate() == ICmpInst::ICMP_EQ) {
return ICI->getOperand(1);
}
}
}
return 0;
}