xref: /aosp_15_r20/external/llvm/test/CodeGen/AArch64/bswap-known-bits.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=aarch64-apple-darwin  | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdeclare i16 @llvm.bswap.i16(i16)
4*9880d681SAndroid Build Coastguard Workerdeclare i32 @llvm.bswap.i32(i32)
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test1
7*9880d681SAndroid Build Coastguard Worker; CHECK: orr w0, wzr, #0x1
8*9880d681SAndroid Build Coastguard Workerdefine i1 @test1(i16 %arg) {
9*9880d681SAndroid Build Coastguard Worker  %a = or i16 %arg, 511
10*9880d681SAndroid Build Coastguard Worker  %b = call i16 @llvm.bswap.i16(i16 %a)
11*9880d681SAndroid Build Coastguard Worker  %and = and i16 %b, 256
12*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i16 %and, 256
13*9880d681SAndroid Build Coastguard Worker  ret i1 %res
14*9880d681SAndroid Build Coastguard Worker}
15*9880d681SAndroid Build Coastguard Worker
16*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test2
17*9880d681SAndroid Build Coastguard Worker; CHECK: orr w0, wzr, #0x1
18*9880d681SAndroid Build Coastguard Workerdefine i1 @test2(i16 %arg) {
19*9880d681SAndroid Build Coastguard Worker  %a = or i16 %arg, 1
20*9880d681SAndroid Build Coastguard Worker  %b = call i16 @llvm.bswap.i16(i16 %a)
21*9880d681SAndroid Build Coastguard Worker  %and = and i16 %b, 256
22*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i16 %and, 256
23*9880d681SAndroid Build Coastguard Worker  ret i1 %res
24*9880d681SAndroid Build Coastguard Worker}
25*9880d681SAndroid Build Coastguard Worker
26*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test3
27*9880d681SAndroid Build Coastguard Worker; CHECK: orr w0, wzr, #0x1
28*9880d681SAndroid Build Coastguard Workerdefine i1 @test3(i16 %arg) {
29*9880d681SAndroid Build Coastguard Worker  %a = or i16 %arg, 256
30*9880d681SAndroid Build Coastguard Worker  %b = call i16 @llvm.bswap.i16(i16 %a)
31*9880d681SAndroid Build Coastguard Worker  %and = and i16 %b, 1
32*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i16 %and, 1
33*9880d681SAndroid Build Coastguard Worker  ret i1 %res
34*9880d681SAndroid Build Coastguard Worker}
35*9880d681SAndroid Build Coastguard Worker
36*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test4
37*9880d681SAndroid Build Coastguard Worker; CHECK: orr w0, wzr, #0x1
38*9880d681SAndroid Build Coastguard Workerdefine i1 @test4(i32 %arg) {
39*9880d681SAndroid Build Coastguard Worker  %a = or i32 %arg, 2147483647  ; i32_MAX
40*9880d681SAndroid Build Coastguard Worker  %b = call i32 @llvm.bswap.i32(i32 %a)
41*9880d681SAndroid Build Coastguard Worker  %and = and i32 %b, 127
42*9880d681SAndroid Build Coastguard Worker  %res = icmp eq i32 %and, 127
43*9880d681SAndroid Build Coastguard Worker  ret i1 %res
44*9880d681SAndroid Build Coastguard Worker}
45