diff options
Diffstat (limited to 'lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 2fe60907fb..67e4aad4fd 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -565,12 +565,9 @@ unsigned llvm::ComputeNumSignBits(Value *V, TargetData *TD, unsigned Depth) { unsigned Tmp, Tmp2; unsigned FirstAnswer = 1; - if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) { - if (CI->getValue().isNegative()) - return CI->getValue().countLeadingOnes(); - return CI->getValue().countLeadingZeros(); - } - + // Note that ConstantInt is handled by the general ComputeMaskedBits case + // below. + if (Depth == 6) return 1; // Limit search depth. |