diff options
Diffstat (limited to 'llvm/lib/Support')
| -rw-r--r-- | llvm/lib/Support/APInt.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/Support/APInt.cpp b/llvm/lib/Support/APInt.cpp index f4aae72ecaf..5789721c3a8 100644 --- a/llvm/lib/Support/APInt.cpp +++ b/llvm/lib/Support/APInt.cpp @@ -2078,6 +2078,16 @@ APInt APInt::smul_ov(const APInt &RHS, bool &Overflow) const { return Res; } +APInt APInt::umul_ov(const APInt &RHS, bool &Overflow) const { + APInt Res = *this * RHS; + + if (*this != 0 && RHS != 0) + Overflow = Res.udiv(RHS) != *this || Res.udiv(*this) != RHS; + else + Overflow = false; + return Res; +} + APInt APInt::sshl_ov(unsigned ShAmt, bool &Overflow) const { Overflow = ShAmt >= getBitWidth(); if (Overflow) |
