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Fix SCEVExpander::visitSMaxExpr and SCEVExpander::visitUMaxExpr to

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not create ICmpInsts with operands of different types. This fixes
a regression in Applications/d/make_dparser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69294 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-04-16 16:15:25 +00:00
parent f04fa483b8
commit 6524d3ab0e
1 changed files with 8 additions and 0 deletions
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8
lib/Analysis/ScalarEvolutionExpander.cpp
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@ -295,9 +295,13 @@ Value *SCEVExpander::visitSignExtendExpr(SCEVSignExtendExpr *S) {
}
Value *SCEVExpander::visitSMaxExpr(SCEVSMaxExpr *S) {
const Type *Ty = S->getType();
Value *LHS = expand(S->getOperand(0));
LHS = InsertCastOfTo(CastInst::getCastOpcode(LHS, false, Ty, false), LHS, Ty);
for (unsigned i = 1; i < S->getNumOperands(); ++i) {
Value *RHS = expand(S->getOperand(i));
RHS = InsertCastOfTo(CastInst::getCastOpcode(RHS, false, Ty, false),
RHS, Ty);
Value *ICmp = new ICmpInst(ICmpInst::ICMP_SGT, LHS, RHS, "tmp", InsertPt);
LHS = SelectInst::Create(ICmp, LHS, RHS, "smax", InsertPt);
}
@ -305,9 +309,13 @@ Value *SCEVExpander::visitSMaxExpr(SCEVSMaxExpr *S) {
}
Value *SCEVExpander::visitUMaxExpr(SCEVUMaxExpr *S) {
const Type *Ty = S->getType();
Value *LHS = expand(S->getOperand(0));
LHS = InsertCastOfTo(CastInst::getCastOpcode(LHS, false, Ty, false), LHS, Ty);
for (unsigned i = 1; i < S->getNumOperands(); ++i) {
Value *RHS = expand(S->getOperand(i));
RHS = InsertCastOfTo(CastInst::getCastOpcode(RHS, false, Ty, false),
RHS, Ty);
Value *ICmp = new ICmpInst(ICmpInst::ICMP_UGT, LHS, RHS, "tmp", InsertPt);
LHS = SelectInst::Create(ICmp, LHS, RHS, "umax", InsertPt);
}