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llvm-svn: 35588
This commit is contained in:
Chris Lattner 2007-04-02 05:48:58 +00:00
parent 7208dd1001
commit aaf29d3b5e
1 changed files with 3 additions and 3 deletions
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6
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -4019,8 +4019,7 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
// (X + C) ^ signbit -> (X + C + signbit)
Constant *C = ConstantInt::get(RHS->getValue() + Op0CI->getValue());
return BinaryOperator::createAdd(Op0I->getOperand(0), C);
}
} else if (Op0I->getOpcode() == Instruction::Or) {
// (X|C1)^C2 -> X^(C1|C2) iff X&~C1 == 0
@ -6272,7 +6271,8 @@ Instruction *InstCombiner::commonIntCastTransforms(CastInst &CI) {
case Instruction::ZExt: {
// We need to emit an AND to clear the high bits.
assert(SrcBitSize < DestBitSize && "Not a zext?");
Constant *C = ConstantInt::get(APInt::getLowBitsSet(DestBitSize, SrcBitSize));
Constant *C = ConstantInt::get(APInt::getLowBitsSet(DestBitSize,
SrcBitSize));
return BinaryOperator::createAnd(Res, C);
}
case Instruction::SExt: