RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-23 04:52:54 +02:00
Code Issues Projects Releases Wiki Activity

[InstCombine] Use the SubOne helper function to shorten some code. NFC

Browse Source 
llvm-svn: 299819
This commit is contained in:
Craig Topper 2017-04-09 06:12:34 +00:00
parent eed0da36be
commit da1963666e
1 changed files with 4 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
View File

@ -2467,9 +2467,8 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
if (Op0I->getOpcode() == Instruction::Sub && RHSC->isAllOnesValue())
if (Constant *Op0I0C = dyn_cast<Constant>(Op0I->getOperand(0))) {
Constant *NegOp0I0C = ConstantExpr::getNeg(Op0I0C);
Constant *ConstantRHS = ConstantExpr::getSub(NegOp0I0C,
ConstantInt::get(I.getType(), 1));
return BinaryOperator::CreateAdd(Op0I->getOperand(1), ConstantRHS);
return BinaryOperator::CreateAdd(Op0I->getOperand(1),
SubOne(NegOp0I0C));
}
if (ConstantInt *Op0CI = dyn_cast<ConstantInt>(Op0I->getOperand(1))) {
@ -2477,10 +2476,8 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
// ~(X-c) --> (-c-1)-X
if (RHSC->isAllOnesValue()) {
Constant *NegOp0CI = ConstantExpr::getNeg(Op0CI);
return BinaryOperator::CreateSub(
ConstantExpr::getSub(NegOp0CI,
ConstantInt::get(I.getType(), 1)),
Op0I->getOperand(0));
return BinaryOperator::CreateSub(SubOne(NegOp0CI),
Op0I->getOperand(0));
} else if (RHSC->getValue().isSignBit()) {
// (X + C) ^ signbit -> (X + C + signbit)
Constant *C = Builder->getInt(RHSC->getValue() + Op0CI->getValue());