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Simplify some code now that the RHS of a rem can't be 0

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26413 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-02-28 05:40:55 +00:00
parent e7f2aa74c0
commit 6c9951b0da
1 changed files with 6 additions and 8 deletions
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2
lib/Transforms/Scalar/InstructionCombining.cpp
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@@ -1867,7 +1867,6 @@ Instruction *InstCombiner::visitRem(BinaryOperator &I) {
if (isPowerOf2_64(C->getValue())) if (isPowerOf2_64(C->getValue()))
return BinaryOperator::createAnd(Op0, SubOne(C)); return BinaryOperator::createAnd(Op0, SubOne(C));
if (!RHS->isNullValue()) {
if (SelectInst *SI = dyn_cast<SelectInst>(Op0)) if (SelectInst *SI = dyn_cast<SelectInst>(Op0))
if (Instruction *R = FoldOpIntoSelect(I, SI, this)) if (Instruction *R = FoldOpIntoSelect(I, SI, this))
return R; return R;
@@ -1875,7 +1874,6 @@ Instruction *InstCombiner::visitRem(BinaryOperator &I) {
if (Instruction *NV = FoldOpIntoPhi(I)) if (Instruction *NV = FoldOpIntoPhi(I))
return NV; return NV;
} }
}
if (Instruction *RHSI = dyn_cast<Instruction>(I.getOperand(1))) { if (Instruction *RHSI = dyn_cast<Instruction>(I.getOperand(1))) {
// Turn A % (C << N), where C is 2^k, into A & ((C << N)-1) [urem only]. // Turn A % (C << N), where C is 2^k, into A & ((C << N)-1) [urem only].