Patch by Sheng Zhou.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35188
91177308-0d34-0410-b5e6-
96231b3b80d8
// isMaxValueMinusOne - return true if this is Max-1
static bool isMaxValueMinusOne(const ConstantInt *C, bool isSigned) {
// isMaxValueMinusOne - return true if this is Max-1
static bool isMaxValueMinusOne(const ConstantInt *C, bool isSigned) {
+ uint32_t TypeBits = C->getType()->getPrimitiveSizeInBits();
if (isSigned) {
// Calculate 0111111111..11111
if (isSigned) {
// Calculate 0111111111..11111
- unsigned TypeBits = C->getType()->getPrimitiveSizeInBits();
- int64_t Val = INT64_MAX; // All ones
- Val >>= 64-TypeBits; // Shift out unwanted 1 bits...
- return C->getSExtValue() == Val-1;
+ APInt Val(APInt::getSignedMaxValue(TypeBits));
+ return C->getValue() == Val-1;
- return C->getZExtValue() == C->getType()->getBitMask()-1;
+ return C->getValue() == APInt::getAllOnesValue(TypeBits) - 1;
}
// isMinValuePlusOne - return true if this is Min+1
}
// isMinValuePlusOne - return true if this is Min+1