diff options
Diffstat (limited to 'llvm/lib/Support/APInt.cpp')
| -rw-r--r-- | llvm/lib/Support/APInt.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Support/APInt.cpp b/llvm/lib/Support/APInt.cpp index 08e9757..5f2686c 100644 --- a/llvm/lib/Support/APInt.cpp +++ b/llvm/lib/Support/APInt.cpp @@ -3027,6 +3027,14 @@ llvm::APIntOps::SolveQuadraticEquationWrap(APInt A, APInt B, APInt C, return X; } +Optional<unsigned> +llvm::APIntOps::GetMostSignificantDifferentBit(const APInt &A, const APInt &B) { + assert(A.getBitWidth() == B.getBitWidth() && "Must have the same bitwidth"); + if (A == B) + return llvm::None; + return A.getBitWidth() - ((A ^ B).countLeadingZeros() + 1); +} + /// StoreIntToMemory - Fills the StoreBytes bytes of memory starting from Dst /// with the integer held in IntVal. void llvm::StoreIntToMemory(const APInt &IntVal, uint8_t *Dst, |