diff options
Diffstat (limited to 'utils')
-rw-r--r-- | utils/TableGen/Record.cpp | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/utils/TableGen/Record.cpp b/utils/TableGen/Record.cpp index c427b761d8..8ac8cd9716 100644 --- a/utils/TableGen/Record.cpp +++ b/utils/TableGen/Record.cpp @@ -68,14 +68,9 @@ Init *BitsRecTy::convertValue(BitInit *UI) { /// canFitInBitfield - Return true if the number of bits is large enough to hold /// the integer value. static bool canFitInBitfield(int64_t Value, unsigned NumBits) { - if (Value >= 0) { - if (Value & ~((1LL << NumBits) - 1)) - return false; - } else if ((Value >> NumBits) != -1 || (Value & (1LL << (NumBits-1))) == 0) { - return false; - } - - return true; + // For example, with NumBits == 4, we permit Values from [-7 .. 15]. + return (NumBits >= sizeof(Value) * 8) || + (Value >> NumBits == 0) || (Value >> (NumBits-1) == -1); } /// convertValue from Int initializer to bits type: Split the integer up into the |