1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
2 ; RUN: opt -S -passes=instcombine < %s | FileCheck %s
4 define i8 @pr98139(i16 %a, i16 %b, i1 %cond) {
5 ; CHECK-LABEL: define i8 @pr98139(
6 ; CHECK-SAME: i16 [[A:%.*]], i16 [[B:%.*]], i1 [[COND:%.*]]) {
7 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND]], i16 1, i16 254
8 ; CHECK-NEXT: [[COND1:%.*]] = icmp ne i16 [[B]], 0
9 ; CHECK-NEXT: [[MASK:%.*]] = and i16 [[A]], 255
10 ; CHECK-NEXT: [[COND2:%.*]] = icmp ne i16 [[MASK]], 255
11 ; CHECK-NEXT: [[COND3:%.*]] = or i1 [[COND1]], [[COND2]]
12 ; CHECK-NEXT: [[SEL2:%.*]] = select i1 [[COND3]], i16 [[SEL]], i16 255
13 ; CHECK-NEXT: [[SUB:%.*]] = sub i16 [[SEL2]], [[A]]
14 ; CHECK-NEXT: [[TRUNC:%.*]] = trunc i16 [[SUB]] to i8
15 ; CHECK-NEXT: ret i8 [[TRUNC]]
17 %sel = select i1 %cond, i16 1, i16 254
18 %cond1 = icmp ne i16 %b, 0
19 %mask = and i16 %a, 255
20 %cond2 = icmp ne i16 %mask, 255
21 %cond3 = or i1 %cond1, %cond2
22 %sel2 = select i1 %cond3, i16 %sel, i16 255
23 %sub = sub i16 %sel2, %a
24 %trunc = trunc i16 %sub to i8