1; RUN: llc -march=amdgcn -stop-after=amdgpu-isel < %s | FileCheck -check-prefix=GCN %s
2
3; GCN-FUNC: uniform_bitreverse_i32
4; GCN: S_BREV_B32
5define amdgpu_kernel void @uniform_bitreverse_i32(i32 %val, i32 addrspace(1)* %out) {
6  %res = call i32 @llvm.bitreverse.i32(i32 %val)
7  store i32 %res, i32 addrspace(1)* %out
8  ret void
9}
10
11; GCN-FUNC: divergent_bitreverse_i32
12; GCN: V_BFREV_B32
13define amdgpu_kernel void @divergent_bitreverse_i32(i32 %val, i32 addrspace(1)* %out) {
14  %tid = call i32 @llvm.amdgcn.workitem.id.x()
15  %divergent = add i32 %val, %tid
16  %res = call i32 @llvm.bitreverse.i32(i32 %divergent)
17  store i32 %res, i32 addrspace(1)* %out
18  ret void
19}
20
21; GCN-FUNC: uniform_bitreverse_i64
22; GCN: S_BREV_B64
23define amdgpu_kernel void @uniform_bitreverse_i64(i64 %val, i64 addrspace(1)* %out) {
24  %res = call i64 @llvm.bitreverse.i64(i64 %val)
25  store i64 %res, i64 addrspace(1)* %out
26  ret void
27}
28
29; GCN-FUNC: divergent_bitreverse_i64
30; GCN: V_BFREV_B32
31; GCN: V_BFREV_B32
32define amdgpu_kernel void @divergent_bitreverse_i64(i64 %val, i64 addrspace(1)* %out) {
33  %tid = call i32 @llvm.amdgcn.workitem.id.x()
34  %ext = zext i32 %tid to i64
35  %divergent = add i64 %val, %ext
36  %res = call i64 @llvm.bitreverse.i64(i64 %divergent)
37  store i64 %res, i64 addrspace(1)* %out
38  ret void
39}
40
41declare i32 @llvm.amdgcn.workitem.id.x()
42declare i32 @llvm.bitreverse.i32(i32)
43declare i64 @llvm.bitreverse.i64(i64)
44