BinaryOperator *BO, BasicBlock *BB) {
assert(BO->getOperand(0)->getType()->isSized() &&
"all operands to binary operators are sized");
- if (BO->getOpcode() == Instruction::Xor) {
- // Xor is the only operation not supported by ConstantRange::binaryOp().
- LLVM_DEBUG(dbgs() << " compute BB '" << BB->getName()
- << "' - overdefined (unknown binary operator).\n");
- return ValueLatticeElement::getOverdefined();
- }
-
if (auto *OBO = dyn_cast<OverflowingBinaryOperator>(BO)) {
unsigned NoWrapKind = 0;
if (OBO->hasNoUnsignedWrap())
; CHECK-LABEL: @xor(
; CHECK-NEXT: [[A_MASK:%.*]] = and i8 [[A:%.*]], 15
; CHECK-NEXT: [[XOR:%.*]] = xor i8 [[A_MASK]], -86
-; CHECK-NEXT: [[C1:%.*]] = icmp uge i8 [[XOR]], -96
-; CHECK-NEXT: store i1 [[C1]], i1* [[P:%.*]], align 1
+; CHECK-NEXT: store i1 true, i1* [[P:%.*]], align 1
; CHECK-NEXT: [[C2:%.*]] = icmp ugt i8 [[XOR]], -96
; CHECK-NEXT: store i1 [[C2]], i1* [[P]], align 1
-; CHECK-NEXT: [[C3:%.*]] = icmp ule i8 [[XOR]], -81
-; CHECK-NEXT: store i1 [[C3]], i1* [[P]], align 1
+; CHECK-NEXT: store i1 true, i1* [[P]], align 1
; CHECK-NEXT: [[C4:%.*]] = icmp ult i8 [[XOR]], -81
; CHECK-NEXT: store i1 [[C4]], i1* [[P]], align 1
; CHECK-NEXT: ret void