diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/Reassociate.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/Reassociate.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/Scalar/Reassociate.cpp b/llvm/lib/Transforms/Scalar/Reassociate.cpp index fc3b38ee53b..a3c241dc0f2 100644 --- a/llvm/lib/Transforms/Scalar/Reassociate.cpp +++ b/llvm/lib/Transforms/Scalar/Reassociate.cpp @@ -1195,9 +1195,6 @@ bool Reassociate::CombineXorOpnd(Instruction *I, XorOpnd *Opnd1, XorOpnd *Opnd2, if (X != Opnd2->getSymbolicPart()) return false; - const APInt &C1 = Opnd1->getConstPart(); - const APInt &C2 = Opnd2->getConstPart(); - // This many instruction become dead.(At least "Opnd1 ^ Opnd2" will die.) int DeadInstNum = 1; if (Opnd1->getValue()->hasOneUse()) @@ -1215,6 +1212,8 @@ bool Reassociate::CombineXorOpnd(Instruction *I, XorOpnd *Opnd1, XorOpnd *Opnd2, if (Opnd2->isOrExpr()) std::swap(Opnd1, Opnd2); + const APInt &C1 = Opnd1->getConstPart(); + const APInt &C2 = Opnd2->getConstPart(); APInt C3((~C1) ^ C2); // Do not increase code size! @@ -1230,6 +1229,8 @@ bool Reassociate::CombineXorOpnd(Instruction *I, XorOpnd *Opnd1, XorOpnd *Opnd2, } else if (Opnd1->isOrExpr()) { // Xor-Rule 3: (x | c1) ^ (x | c2) = (x & c3) ^ c3 where c3 = c1 ^ c2 // + const APInt &C1 = Opnd1->getConstPart(); + const APInt &C2 = Opnd2->getConstPart(); APInt C3 = C1 ^ C2; // Do not increase code size @@ -1244,6 +1245,8 @@ bool Reassociate::CombineXorOpnd(Instruction *I, XorOpnd *Opnd1, XorOpnd *Opnd2, } else { // Xor-Rule 4: (x & c1) ^ (x & c2) = (x & (c1^c2)) // + const APInt &C1 = Opnd1->getConstPart(); + const APInt &C2 = Opnd2->getConstPart(); APInt C3 = C1 ^ C2; Res = createAndInstr(I, X, C3); } |
