return DAG.getSetCC(SDLoc(N), VT, ORNode, LR, Op1);
}
}
+ // Simplify (and (setne X, 0), (setne X, -1)) -> (setuge (add X, 1), 2)
+ if (LL == RL && isa<ConstantSDNode>(LR) && isa<ConstantSDNode>(RR) &&
+ Op0 == Op1 && LL.getValueType().isInteger() &&
+ Op0 == ISD::SETNE && ((cast<ConstantSDNode>(LR)->isNullValue() &&
+ cast<ConstantSDNode>(RR)->isAllOnesValue()) ||
+ (cast<ConstantSDNode>(LR)->isAllOnesValue() &&
+ cast<ConstantSDNode>(RR)->isNullValue()))) {
+ SDValue ADDNode = DAG.getNode(ISD::ADD, SDLoc(N0), LL.getValueType(),
+ LL, DAG.getConstant(1, LL.getValueType()));
+ AddToWorkList(ADDNode.getNode());
+ return DAG.getSetCC(SDLoc(N), VT, ADDNode,
+ DAG.getConstant(2, LL.getValueType()), ISD::SETUGE);
+ }
// canonicalize equivalent to ll == rl
if (LL == RR && LR == RL) {
Op1 = ISD::getSetCCSwappedOperands(Op1);
--- /dev/null
+; RUN: llc < %s -mcpu=cortex-a8 -march=arm -asm-verbose=false | FileCheck %s
+
+define zeroext i1 @test0(i32 %x) nounwind {
+; CHECK-LABEL: test0:
+; CHECK-NEXT: add [[REG:(r[0-9]+)|(lr)]], r0, #1
+; CHECK-NEXT: mov r0, #0
+; CHECK-NEXT: cmp [[REG]], #1
+; CHECK-NEXT: movhi r0, #1
+; CHECK-NEXT: bx lr
+ %cmp1 = icmp ne i32 %x, -1
+ %not.cmp = icmp ne i32 %x, 0
+ %.cmp1 = and i1 %cmp1, %not.cmp
+ ret i1 %.cmp1
+}
--- /dev/null
+; RUN: llc < %s -mcpu=generic -march=x86-64 -asm-verbose=false | FileCheck %s
+
+define zeroext i1 @test0(i64 %x) nounwind {
+; CHECK-LABEL: test0:
+; CHECK-NEXT: incq %rdi
+; CHECK-NEXT: cmpq $1, %rdi
+; CHECK-NEXT: seta %al
+; CHECK-NEXT: ret
+ %cmp1 = icmp ne i64 %x, -1
+ %not.cmp = icmp ne i64 %x, 0
+ %.cmp1 = and i1 %cmp1, %not.cmp
+ ret i1 %.cmp1
+}