diff options
Diffstat (limited to 'lib/Transforms/InstCombine/InstCombineCalls.cpp')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineCalls.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineCalls.cpp b/lib/Transforms/InstCombine/InstCombineCalls.cpp index face7abcc95f2..92a38f26dde7a 100644 --- a/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -1378,9 +1378,7 @@ static Instruction *foldCttzCtlz(IntrinsicInst &II, InstCombiner &IC) { if (!IT) return nullptr; - unsigned BitWidth = IT->getBitWidth(); - KnownBits Known(BitWidth); - IC.computeKnownBits(Op0, Known, 0, &II); + KnownBits Known = IC.computeKnownBits(Op0, 0, &II); // Create a mask for bits above (ctlz) or below (cttz) the first known one. bool IsTZ = II.getIntrinsicID() == Intrinsic::cttz; @@ -1401,7 +1399,9 @@ static Instruction *foldCttzCtlz(IntrinsicInst &II, InstCombiner &IC) { // If the input to cttz/ctlz is known to be non-zero, // then change the 'ZeroIsUndef' parameter to 'true' // because we know the zero behavior can't affect the result. - if (Known.One != 0 || isKnownNonZero(Op0, IC.getDataLayout())) { + if (Known.One != 0 || + isKnownNonZero(Op0, IC.getDataLayout(), 0, &IC.getAssumptionCache(), &II, + &IC.getDominatorTree())) { if (!match(II.getArgOperand(1), m_One())) { II.setOperand(1, IC.Builder->getTrue()); return ⅈ |