llvm/test/CodeGen/AMDGPU/lower-intrinsics-noalias-metadata.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='amdgpu-lower-intrinsics,function(amdgpu-annotate-uniform)' -S -mtriple=amdgpu11.00-amd-amdhsa -codegen-opt-level=1 -mattr=+wavefrontsize32 < %s | FileCheck --check-prefix=NOCLOBBER %s
; RUN: opt -passes=amdgpu-lower-intrinsics -S -mtriple=amdgpu11.00-amd-amdhsa -codegen-opt-level=1 -mattr=+wavefrontsize32 < %s | FileCheck --check-prefix=GFX11 %s
; RUN: opt -passes=amdgpu-lower-intrinsics -S -mtriple=amdgpu12.00-amd-amdhsa -codegen-opt-level=1 -mattr=+wavefrontsize32 < %s | FileCheck --check-prefix=GFX12 %s

; Verify that amdgpu-lower-intrinsics preserves metadata when lowering
; barrier intrinsics to other barrier intrinsics or wave_barrier.

; The original noclobber motivation test: without metadata preservation,
; MemorySSA can no longer see past the barrier, walks further, and may
; reach an unrelated side-effecting def that falsely blocks
; !amdgpu.noclobber on a later global load.
define amdgpu_kernel void @noclobber_after_barrier_lowering(ptr addrspace(1) %arg, ptr addrspace(3) %lds) "amdgpu-flat-work-group-size"="1,32" {
; NOCLOBBER-LABEL: @noclobber_after_barrier_lowering(
; NOCLOBBER-NEXT:  bb:
; NOCLOBBER-NEXT:    store i32 99, ptr addrspace(3) [[LDS:%.*]], align 4, !tbaa [[TBAA0:![0-9]+]], !alias.scope [[META4:![0-9]+]], !noalias [[META7:![0-9]+]]
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    [[GEP:%.*]] = getelementptr inbounds i32, ptr addrspace(1) [[ARG:%.*]], i64 1, !amdgpu.uniform [[META9:![0-9]+]]
; NOCLOBBER-NEXT:    [[VAL:%.*]] = load i32, ptr addrspace(1) [[GEP]], align 4, !alias.scope [[META7]], !noalias [[META4]], !amdgpu.noclobber [[META9]]
; NOCLOBBER-NEXT:    store i32 [[VAL]], ptr addrspace(1) [[ARG]], align 4
; NOCLOBBER-NEXT:    ret void
;
; GFX11-LABEL: @noclobber_after_barrier_lowering(
; GFX11-NEXT:  bb:
; GFX11-NEXT:    store i32 99, ptr addrspace(3) [[LDS:%.*]], align 4, !tbaa [[TBAA0:![0-9]+]], !alias.scope [[META4:![0-9]+]], !noalias [[META7:![0-9]+]]
; GFX11-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    [[GEP:%.*]] = getelementptr inbounds i32, ptr addrspace(1) [[ARG:%.*]], i64 1
; GFX11-NEXT:    [[VAL:%.*]] = load i32, ptr addrspace(1) [[GEP]], align 4, !alias.scope [[META7]], !noalias [[META4]]
; GFX11-NEXT:    store i32 [[VAL]], ptr addrspace(1) [[ARG]], align 4
; GFX11-NEXT:    ret void
;
; GFX12-LABEL: @noclobber_after_barrier_lowering(
; GFX12-NEXT:  bb:
; GFX12-NEXT:    store i32 99, ptr addrspace(3) [[LDS:%.*]], align 4, !tbaa [[TBAA0:![0-9]+]], !alias.scope [[META4:![0-9]+]], !noalias [[META7:![0-9]+]]
; GFX12-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    [[GEP:%.*]] = getelementptr inbounds i32, ptr addrspace(1) [[ARG:%.*]], i64 1
; GFX12-NEXT:    [[VAL:%.*]] = load i32, ptr addrspace(1) [[GEP]], align 4, !alias.scope [[META7]], !noalias [[META4]]
; GFX12-NEXT:    store i32 [[VAL]], ptr addrspace(1) [[ARG]], align 4
; GFX12-NEXT:    ret void
;
bb:
  store i32 99, ptr addrspace(3) %lds, align 4, !alias.scope !4, !noalias !1, !tbaa !5
  tail call void @llvm.amdgcn.s.barrier(), !noalias !1, !alias.scope !4, !tbaa !5
  %gep = getelementptr inbounds i32, ptr addrspace(1) %arg, i64 1
  %val = load i32, ptr addrspace(1) %gep, align 4, !alias.scope !1, !noalias !4
  store i32 %val, ptr addrspace(1) %arg, align 4
  ret void
}

; Single-wave s_barrier -> wave_barrier
define amdgpu_kernel void @barrier_single_wave(ptr addrspace(1) %arg) "amdgpu-flat-work-group-size"="1,32" {
; NOCLOBBER-LABEL: @barrier_single_wave(
; NOCLOBBER-NEXT:  bb:
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    ret void
;
; GFX11-LABEL: @barrier_single_wave(
; GFX11-NEXT:  bb:
; GFX11-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    ret void
;
; GFX12-LABEL: @barrier_single_wave(
; GFX12-NEXT:  bb:
; GFX12-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    ret void
;
bb:
  tail call void @llvm.amdgcn.s.barrier(), !noalias !1, !alias.scope !4, !tbaa !5
  ret void
}

; Multi-wave s_barrier -> s_barrier_signal + s_barrier_wait (GFX12 split barriers)
define amdgpu_kernel void @barrier_multi_wave(ptr addrspace(1) %arg) {
; NOCLOBBER-LABEL: @barrier_multi_wave(
; NOCLOBBER-NEXT:  bb:
; NOCLOBBER-NEXT:    tail call void @llvm.amdgcn.s.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    ret void
;
; GFX11-LABEL: @barrier_multi_wave(
; GFX11-NEXT:  bb:
; GFX11-NEXT:    tail call void @llvm.amdgcn.s.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    ret void
;
; GFX12-LABEL: @barrier_multi_wave(
; GFX12-NEXT:  bb:
; GFX12-NEXT:    call void @llvm.amdgcn.s.barrier.signal(i32 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    ret void
;
bb:
  tail call void @llvm.amdgcn.s.barrier(), !noalias !1, !alias.scope !4, !tbaa !5
  ret void
}

; Single-wave s_cluster_barrier -> wave_barrier
define amdgpu_kernel void @cluster_barrier_single_wave(ptr addrspace(1) %arg) "amdgpu-flat-work-group-size"="1,32" {
; NOCLOBBER-LABEL: @cluster_barrier_single_wave(
; NOCLOBBER-NEXT:  bb:
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.s.barrier.signal(i32 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    ret void
;
; GFX11-LABEL: @cluster_barrier_single_wave(
; GFX11-NEXT:  bb:
; GFX11-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    call void @llvm.amdgcn.s.barrier.signal(i32 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    ret void
;
; GFX12-LABEL: @cluster_barrier_single_wave(
; GFX12-NEXT:  bb:
; GFX12-NEXT:    call void @llvm.amdgcn.wave.barrier(), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    call void @llvm.amdgcn.s.barrier.signal(i32 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    ret void
;
bb:
  tail call void @llvm.amdgcn.s.cluster.barrier(), !noalias !1, !alias.scope !4, !tbaa !5
  ret void
}

; Multi-wave s_cluster_barrier -> signal_isfirst + wait + signal(cluster) + wait(cluster)
define amdgpu_kernel void @cluster_barrier_multi_wave(ptr addrspace(1) %arg) {
; NOCLOBBER-LABEL: @cluster_barrier_multi_wave(
; NOCLOBBER-NEXT:  bb:
; NOCLOBBER-NEXT:    [[TMP0:%.*]] = call i1 @llvm.amdgcn.s.barrier.signal.isfirst(i32 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    br i1 [[TMP0]], label [[TMP1:%.*]], label [[TMP2:%.*]], !amdgpu.uniform [[META9]]
; NOCLOBBER:       1:
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.s.barrier.signal(i32 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    br label [[TMP2]]
; NOCLOBBER:       2:
; NOCLOBBER-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; NOCLOBBER-NEXT:    ret void
;
; GFX11-LABEL: @cluster_barrier_multi_wave(
; GFX11-NEXT:  bb:
; GFX11-NEXT:    [[TMP0:%.*]] = call i1 @llvm.amdgcn.s.barrier.signal.isfirst(i32 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    br i1 [[TMP0]], label [[TMP1:%.*]], label [[TMP2:%.*]]
; GFX11:       1:
; GFX11-NEXT:    call void @llvm.amdgcn.s.barrier.signal(i32 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    br label [[TMP2]]
; GFX11:       2:
; GFX11-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX11-NEXT:    ret void
;
; GFX12-LABEL: @cluster_barrier_multi_wave(
; GFX12-NEXT:  bb:
; GFX12-NEXT:    [[TMP0:%.*]] = call i1 @llvm.amdgcn.s.barrier.signal.isfirst(i32 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -1), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    br i1 [[TMP0]], label [[TMP1:%.*]], label [[TMP2:%.*]]
; GFX12:       1:
; GFX12-NEXT:    call void @llvm.amdgcn.s.barrier.signal(i32 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    br label [[TMP2]]
; GFX12:       2:
; GFX12-NEXT:    call void @llvm.amdgcn.s.barrier.wait(i16 -3), !tbaa [[TBAA0]], !alias.scope [[META4]], !noalias [[META7]]
; GFX12-NEXT:    ret void
;
bb:
  tail call void @llvm.amdgcn.s.cluster.barrier(), !noalias !1, !alias.scope !4, !tbaa !5
  ret void
}

declare void @llvm.amdgcn.s.barrier()
declare void @llvm.amdgcn.s.cluster.barrier()

!0 = distinct !{!0, !"domain"}
!2 = distinct !{!2, !0, !"global_scope"}
!3 = distinct !{!3, !0, !"lds_scope"}
!1 = !{!2}
!4 = !{!3}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}