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-rw-r--r--llvm/include/llvm/ADT/APInt.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/include/llvm/ADT/APInt.h b/llvm/include/llvm/ADT/APInt.h
index a02ecaa762a..cdb72b95ad7 100644
--- a/llvm/include/llvm/ADT/APInt.h
+++ b/llvm/include/llvm/ADT/APInt.h
@@ -625,7 +625,12 @@ public:
/// Negates *this using two's complement logic.
///
/// \returns An APInt value representing the negation of *this.
- APInt operator-() const { return APInt(BitWidth, 0) - (*this); }
+ APInt operator-() const {
+ APInt Result(*this);
+ Result.flipAllBits();
+ ++Result;
+ return Result;
+ }
/// \brief Logical negation operator.
///
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