llvm-project/llvm/test/CodeGen/AMDGPU/divergence-driven-bitreverse.ll
paperchalice 7652a59407
Reland "[NewPM][CodeGen] Port selection dag isel to new pass manager" (#94149)
- Fix build with `EXPENSIVE_CHECKS`
- Remove unused `PassName::ID` to resolve warning
- Mark `~SelectionDAGISel` virtual so AArch64 backend can work properly
2024-06-04 08:10:58 +08:00

45 lines
1.5 KiB
LLVM

; RUN: llc -mtriple=amdgcn -stop-after=amdgpu-isel < %s | FileCheck -check-prefix=GCN %s
; RUN: llc -mtriple=amdgcn -enable-new-pm -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)