RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-12-23 03:59:12 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix InstCombine/2007-03-31-InfiniteLoop.ll

Browse Source 
llvm-svn: 35536
This commit is contained in:
Chris Lattner 2007-04-01 05:36:37 +00:00
parent f8977023f4
commit aa4b06bdae
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/Transforms/Scalar/InstructionCombining.cpp
View File

@ -4083,8 +4083,10 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
else if (Op0 == B) // A^(B^A) == B
return ReplaceInstUsesWith(I, A);
} else if (match(Op1I, m_And(m_Value(A), m_Value(B))) && Op1I->hasOneUse()){
if (A == Op0) // A^(A&B) -> A^(B&A)
if (A == Op0) { // A^(A&B) -> A^(B&A)
Op1I->swapOperands();
std::swap(A, B);
}
if (B == Op0) { // A^(B&A) -> (B&A)^A
I.swapOperands(); // Simplified below.
std::swap(Op0, Op1);