llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-lastuse.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn-amd-amdhsa -O0 -mcpu=gfx1200 < %s | FileCheck --check-prefix=GFX12 %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -O0 -mcpu=gfx1200 -mattr=+cumode < %s | FileCheck --check-prefix=GFX12 %s

define amdgpu_kernel void @flat_last_use_load_0(ptr %in, ptr %out) {
; GFX12-LABEL: flat_last_use_load_0:
; GFX12:       ; %bb.0: ; %entry
; GFX12-NEXT:    s_load_b64 s[2:3], s[4:5], 0x0
; GFX12-NEXT:    s_load_b64 s[0:1], s[4:5], 0x8
; GFX12-NEXT:    s_wait_kmcnt 0x0
; GFX12-NEXT:    v_mov_b32_e32 v0, s2
; GFX12-NEXT:    v_mov_b32_e32 v1, s3
; GFX12-NEXT:    flat_load_b32 v2, v[0:1] th:TH_LOAD_LU
; GFX12-NEXT:    v_mov_b32_e32 v0, s0
; GFX12-NEXT:    v_mov_b32_e32 v1, s1
; GFX12-NEXT:    s_wait_loadcnt_dscnt 0x0
; GFX12-NEXT:    flat_store_b32 v[0:1], v2
; GFX12-NEXT:    s_endpgm
entry:
  %val = load i32, ptr %in, align 4, !amdgpu.last.use !{}
  store i32 %val, ptr %out
  ret void
}

define amdgpu_kernel void @flat_last_use_load_1(ptr %in, ptr %out) {
; GFX12-LABEL: flat_last_use_load_1:
; GFX12:       ; %bb.0: ; %entry
; GFX12-NEXT:    s_mov_b64 s[0:1], s[4:5]
; GFX12-NEXT:    s_load_b64 s[4:5], s[0:1], 0x0
; GFX12-NEXT:    s_load_b64 s[0:1], s[0:1], 0x8
; GFX12-NEXT:    s_mov_b32 s2, 0x3ff
; GFX12-NEXT:    v_and_b32_e64 v0, v0, s2
; GFX12-NEXT:    s_mov_b32 s2, 2
; GFX12-NEXT:    s_wait_alu 0xfffe
; GFX12-NEXT:    v_lshlrev_b32_e64 v1, s2, v0
; GFX12-NEXT:    s_mov_b32 s2, 0
; GFX12-NEXT:    ; implicit-def: $sgpr2
; GFX12-NEXT:    v_mov_b32_e32 v0, 0
; GFX12-NEXT:    ; kill: def $vgpr1 killed $vgpr1 def $vgpr1_vgpr2 killed $exec
; GFX12-NEXT:    v_mov_b32_e32 v2, v0
; GFX12-NEXT:    s_wait_kmcnt 0x0
; GFX12-NEXT:    s_mov_b32 s3, s4
; GFX12-NEXT:    v_mov_b32_e32 v0, v1
; GFX12-NEXT:    s_mov_b32 s2, s5
; GFX12-NEXT:    v_mov_b32_e32 v1, v2
; GFX12-NEXT:    s_wait_alu 0xfffe
; GFX12-NEXT:    v_add_co_u32 v0, s3, s3, v0
; GFX12-NEXT:    s_wait_alu 0xf1ff
; GFX12-NEXT:    v_add_co_ci_u32_e64 v2, s2, s2, v1, s3
; GFX12-NEXT:    ; kill: def $vgpr0 killed $vgpr0 def $vgpr0_vgpr1 killed $exec
; GFX12-NEXT:    v_mov_b32_e32 v1, v2
; GFX12-NEXT:    flat_load_b32 v2, v[0:1] th:TH_LOAD_LU
; GFX12-NEXT:    v_mov_b32_e32 v0, s0
; GFX12-NEXT:    v_mov_b32_e32 v1, s1
; GFX12-NEXT:    s_wait_loadcnt_dscnt 0x0
; GFX12-NEXT:    flat_store_b32 v[0:1], v2
; GFX12-NEXT:    s_endpgm
entry:
  %tid = call i32 @llvm.amdgcn.workitem.id.x()
  %val.gep = getelementptr inbounds i32, ptr %in, i32 %tid
  %val = load i32, ptr %val.gep, align 4, !amdgpu.last.use !{}
  store i32 %val, ptr %out
  ret void
}

define amdgpu_kernel void @flat_last_use_and_volatile_load(ptr %in, ptr %out) {
; GFX12-LABEL: flat_last_use_and_volatile_load:
; GFX12:       ; %bb.0: ; %entry
; GFX12-NEXT:    s_load_b64 s[2:3], s[4:5], 0x0
; GFX12-NEXT:    s_load_b64 s[0:1], s[4:5], 0x8
; GFX12-NEXT:    s_wait_kmcnt 0x0
; GFX12-NEXT:    v_mov_b32_e32 v0, s2
; GFX12-NEXT:    v_mov_b32_e32 v1, s3
; GFX12-NEXT:    flat_load_b32 v2, v[0:1] th:TH_LOAD_BYPASS scope:SCOPE_SYS
; GFX12-NEXT:    s_wait_bvhcnt 0x0
; GFX12-NEXT:    s_wait_samplecnt 0x0
; GFX12-NEXT:    s_wait_loadcnt 0x0
; GFX12-NEXT:    v_mov_b32_e32 v0, s0
; GFX12-NEXT:    v_mov_b32_e32 v1, s1
; GFX12-NEXT:    s_wait_dscnt 0x0
; GFX12-NEXT:    flat_store_b32 v[0:1], v2
; GFX12-NEXT:    s_endpgm
entry:
  %val = load volatile i32, ptr %in, align 4, !amdgpu.last.use !{}
  store i32 %val, ptr %out
  ret void
}

define amdgpu_kernel void @flat_last_use_and_nontemporal_load(ptr %in, ptr %out) {
; GFX12-LABEL: flat_last_use_and_nontemporal_load:
; GFX12:       ; %bb.0: ; %entry
; GFX12-NEXT:    s_load_b64 s[2:3], s[4:5], 0x0
; GFX12-NEXT:    s_load_b64 s[0:1], s[4:5], 0x8
; GFX12-NEXT:    s_wait_kmcnt 0x0
; GFX12-NEXT:    v_mov_b32_e32 v0, s2
; GFX12-NEXT:    v_mov_b32_e32 v1, s3
; GFX12-NEXT:    flat_load_b32 v2, v[0:1] th:TH_LOAD_LU
; GFX12-NEXT:    v_mov_b32_e32 v0, s0
; GFX12-NEXT:    v_mov_b32_e32 v1, s1
; GFX12-NEXT:    s_wait_loadcnt_dscnt 0x0
; GFX12-NEXT:    flat_store_b32 v[0:1], v2
; GFX12-NEXT:    s_endpgm
entry:
  %val = load i32, ptr %in, align 4, !amdgpu.last.use !{}, !nontemporal !0
  store i32 %val, ptr %out
  ret void
}

!0 = !{i32 1}
declare i32 @llvm.amdgcn.workitem.id.x()