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Finally get the casting right in this file. Also, remove some unnecessary
casting because sdiv doesn't require operand signs to match any more. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32240 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -560,7 +560,7 @@ SCEVHandle SCEVAddRecExpr::evaluateAtIteration(SCEVHandle It) const {
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SCEVHandle SCEVTruncateExpr::get(const SCEVHandle &Op, const Type *Ty) {
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if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Op))
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return SCEVUnknown::get(
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ConstantExpr::getTruncOrBitCast(SC->getValue(), Ty));
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ConstantExpr::getTrunc(SC->getValue(), Ty));
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// If the input value is a chrec scev made out of constants, truncate
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// all of the constants.
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@ -584,7 +584,7 @@ SCEVHandle SCEVTruncateExpr::get(const SCEVHandle &Op, const Type *Ty) {
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SCEVHandle SCEVZeroExtendExpr::get(const SCEVHandle &Op, const Type *Ty) {
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if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Op))
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return SCEVUnknown::get(
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ConstantExpr::getZExtOrBitCast(SC->getValue(), Ty));
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ConstantExpr::getZeroExtend(SC->getValue(), Ty));
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// FIXME: If the input value is a chrec scev, and we can prove that the value
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// did not overflow the old, smaller, value, we can zero extend all of the
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@ -999,11 +999,6 @@ SCEVHandle SCEVSDivExpr::get(const SCEVHandle &LHS, const SCEVHandle &RHS) {
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if (SCEVConstant *LHSC = dyn_cast<SCEVConstant>(LHS)) {
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Constant *LHSCV = LHSC->getValue();
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Constant *RHSCV = RHSC->getValue();
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if (LHSCV->getType()->isUnsigned())
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LHSCV = ConstantExpr::getBitCast(LHSCV,
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LHSCV->getType()->getSignedVersion());
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if (RHSCV->getType()->isUnsigned())
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RHSCV = ConstantExpr::getBitCast(RHSCV, LHSCV->getType());
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return SCEVUnknown::get(ConstantExpr::getSDiv(LHSCV, RHSCV));
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}
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}
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@ -1376,12 +1371,16 @@ SCEVHandle ScalarEvolutionsImpl::createSCEV(Value *V) {
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break;
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case Instruction::Trunc:
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// We must prevent boolean types such as setne, etc. from entering here
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// because we don't want to pass SCEVUnknown to the TruncateExpr.
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if (I->getType()->isInteger() && I->getOperand(0)->getType()->isInteger())
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return SCEVTruncateExpr::get(getSCEV(I->getOperand(0)),
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I->getType()->getUnsignedVersion());
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break;
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case Instruction::ZExt:
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// We must prevent boolean types such as setne, etc. from entering here
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// because we don't want to pass SCEVUnknown to the ZExtExpr.
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if (I->getType()->isInteger() && I->getOperand(0)->getType()->isInteger())
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return SCEVZeroExtendExpr::get(getSCEV(I->getOperand(0)),
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I->getType()->getUnsignedVersion());
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