xref: /aosp_15_r20/external/llvm/test/Transforms/InstSimplify/bswap.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; NOTE: Assertions have been autogenerated by update_test_checks.py
2*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -S -instsimplify | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Workerdeclare i16 @llvm.bswap.i16(i16)
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdefine i1 @test1(i16 %arg) {
7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test1(
8*9880d681SAndroid Build Coastguard Worker; CHECK:         ret i1 false
9*9880d681SAndroid Build Coastguard Worker;
10*9880d681SAndroid Build Coastguard Worker  %a = or i16 %arg, 1
11*9880d681SAndroid Build Coastguard Worker  %b = call i16 @llvm.bswap.i16(i16 %a)
12*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i16 %b, 0
13*9880d681SAndroid Build Coastguard Worker  ret i1 %res
14*9880d681SAndroid Build Coastguard Worker}
15*9880d681SAndroid Build Coastguard Worker
16*9880d681SAndroid Build Coastguard Workerdefine i1 @test2(i16 %arg) {
17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test2(
18*9880d681SAndroid Build Coastguard Worker; CHECK:         ret i1 false
19*9880d681SAndroid Build Coastguard Worker;
20*9880d681SAndroid Build Coastguard Worker  %a = or i16 %arg, 1024
21*9880d681SAndroid Build Coastguard Worker  %b = call i16 @llvm.bswap.i16(i16 %a)
22*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i16 %b, 0
23*9880d681SAndroid Build Coastguard Worker  ret i1 %res
24*9880d681SAndroid Build Coastguard Worker}
25*9880d681SAndroid Build Coastguard Worker
26*9880d681SAndroid Build Coastguard Workerdefine i1 @test3(i16 %arg) {
27*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test3(
28*9880d681SAndroid Build Coastguard Worker; CHECK:         ret i1 false
29*9880d681SAndroid Build Coastguard Worker;
30*9880d681SAndroid Build Coastguard Worker  %a = and i16 %arg, 1
31*9880d681SAndroid Build Coastguard Worker  %b = call i16 @llvm.bswap.i16(i16 %a)
32*9880d681SAndroid Build Coastguard Worker  %and = and i16 %b, 1
33*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i16 %and, 1
34*9880d681SAndroid Build Coastguard Worker  ret i1 %res
35*9880d681SAndroid Build Coastguard Worker}
36*9880d681SAndroid Build Coastguard Worker
37*9880d681SAndroid Build Coastguard Workerdefine i1 @test4(i16 %arg) {
38*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test4(
39*9880d681SAndroid Build Coastguard Worker; CHECK:         ret i1 false
40*9880d681SAndroid Build Coastguard Worker;
41*9880d681SAndroid Build Coastguard Worker  %a = and i16 %arg, 511
42*9880d681SAndroid Build Coastguard Worker  %b = call i16 @llvm.bswap.i16(i16 %a)
43*9880d681SAndroid Build Coastguard Worker  %and = and i16 %b, 256
44*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i16 %and, 1
45*9880d681SAndroid Build Coastguard Worker  ret i1 %res
46*9880d681SAndroid Build Coastguard Worker}
47