1; RUN: opt < %s -instcombine -S | FileCheck %s
2
3; Remove an icmp by using its operand in the subsequent logic directly.
4
5define i8 @zext_or_icmp_icmp(i8 %a, i8 %b) {
6  %mask = and i8 %a, 1
7  %toBool1 = icmp eq i8 %mask, 0
8  %toBool2 = icmp eq i8 %b, 0
9  %bothCond = or i1 %toBool1, %toBool2
10  %zext = zext i1 %bothCond to i8
11  ret i8 %zext
12
13; CHECK-LABEL: zext_or_icmp_icmp(
14; CHECK-NEXT:    %mask = and i8 %a, 1
15; CHECK-NEXT:    %toBool2 = icmp eq i8 %b, 0
16; CHECK-NEXT:    %1 = xor i8 %mask, 1
17; CHECK-NEXT:    %toBool22 = zext i1 %toBool2 to i8
18; CHECK-NEXT:    %zext = or i8 %1, %toBool22
19; CHECK-NEXT:    ret i8 %zext
20}
21
22