[APInt] In slt/sgt(uint64_t), only call getMinSignedBits if the APInt is not a single word.

llvm-svn: 300824

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/include/llvm/ADT/APInt.h b/llvm/include/llvm/ADT/APInt.h
index 2e8da455c0a..785a9afd4d8 100644
--- a/llvm/include/llvm/ADT/APInt.h
+++ b/llvm/include/llvm/ADT/APInt.h
@@ -1104,7 +1104,8 @@ public:
   ///
   /// \returns true if *this < RHS when considered signed.
   bool slt(int64_t RHS) const {
-    return getMinSignedBits() > 64 ? isNegative() : getSExtValue() < RHS;
+    return (!isSingleWord() && getMinSignedBits() > 64) ? isNegative()
+                                                        : getSExtValue() < RHS;
   }
 
   /// \brief Unsigned less or equal comparison
@@ -1173,7 +1174,8 @@ public:
   ///
   /// \returns true if *this > RHS when considered signed.
   bool sgt(int64_t RHS) const {
-    return getMinSignedBits() > 64 ? !isNegative() : getSExtValue() > RHS;
+    return (!isSingleWord() && getMinSignedBits() > 64) ? !isNegative()
+                                                        : getSExtValue() > RHS;
   }
 
   /// \brief Unsigned greater or equal comparison