44 lines
1.4 KiB
LLVM
44 lines
1.4 KiB
LLVM
|
; RUN: llc -mtriple=amdgcn -stop-after=amdgpu-isel < %s | FileCheck -check-prefix=GCN %s
|
||
|
|
|
||
|
|
; GCN-LABEL: name: uniform_bitreverse_i32
|
||
|
|
; GCN: S_BREV_B32
|
||
|
|
define amdgpu_kernel void @uniform_bitreverse_i32(i32 %val, ptr addrspace(1) %out) {
|
||
|
|
%res = call i32 @llvm.bitreverse.i32(i32 %val)
|
||
|
|
store i32 %res, ptr addrspace(1) %out
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; GCN-LABEL: name: divergent_bitreverse_i32
|
||
|
|
; GCN: V_BFREV_B32
|
||
|
|
define amdgpu_kernel void @divergent_bitreverse_i32(i32 %val, ptr addrspace(1) %out) {
|
||
|
|
%tid = call i32 @llvm.amdgcn.workitem.id.x()
|
||
|
|
%divergent = add i32 %val, %tid
|
||
|
|
%res = call i32 @llvm.bitreverse.i32(i32 %divergent)
|
||
|
|
store i32 %res, ptr addrspace(1) %out
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; GCN-LABEL: name: uniform_bitreverse_i64
|
||
|
|
; GCN: S_BREV_B64
|
||
|
|
define amdgpu_kernel void @uniform_bitreverse_i64(i64 %val, ptr addrspace(1) %out) {
|
||
|
|
%res = call i64 @llvm.bitreverse.i64(i64 %val)
|
||
|
|
store i64 %res, ptr addrspace(1) %out
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; GCN-LABEL: name: divergent_bitreverse_i64
|
||
|
|
; GCN: V_BFREV_B32
|
||
|
|
; GCN: V_BFREV_B32
|
||
|
|
define amdgpu_kernel void @divergent_bitreverse_i64(i64 %val, ptr addrspace(1) %out) {
|
||
|
|
%tid = call i32 @llvm.amdgcn.workitem.id.x()
|
||
|
|
%ext = zext i32 %tid to i64
|
||
|
|
%divergent = add i64 %val, %ext
|
||
|
|
%res = call i64 @llvm.bitreverse.i64(i64 %divergent)
|
||
|
|
store i64 %res, ptr addrspace(1) %out
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @llvm.amdgcn.workitem.id.x()
|
||
|
|
declare i32 @llvm.bitreverse.i32(i32)
|
||
|
|
declare i64 @llvm.bitreverse.i64(i64)
|