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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck --check-prefixes=GFX9-NO-BACKOFF %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs < %s | FileCheck --check-prefixes=GFX9-BACKOFF %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx940 -verify-machineinstrs < %s | FileCheck --check-prefixes=GFX9-BACKOFF %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -mattr=-back-off-barrier -verify-machineinstrs < %s | FileCheck --check-prefixes=GFX9-NO-BACKOFF %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck --check-prefixes=GFX10-BACKOFF %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 -verify-machineinstrs < %s | FileCheck --check-prefixes=GFX11-BACKOFF %s
; Subtargets must wait for outstanding memory instructions before a barrier if
; they cannot back off of the barrier.
define void @back_off_barrier_no_fence(ptr %in, ptr %out) #0 {
; GFX9-NO-BACKOFF-LABEL: back_off_barrier_no_fence:
; GFX9-NO-BACKOFF: ; %bb.0:
; GFX9-NO-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NO-BACKOFF-NEXT: flat_load_dword v0, v[0:1]
; GFX9-NO-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-NO-BACKOFF-NEXT: s_barrier
; GFX9-NO-BACKOFF-NEXT: flat_store_dword v[2:3], v0
; GFX9-NO-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-NO-BACKOFF-NEXT: s_setpc_b64 s[30:31]
;
; GFX9-BACKOFF-LABEL: back_off_barrier_no_fence:
; GFX9-BACKOFF: ; %bb.0:
; GFX9-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-BACKOFF-NEXT: flat_load_dword v0, v[0:1]
; GFX9-BACKOFF-NEXT: s_barrier
; GFX9-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-BACKOFF-NEXT: flat_store_dword v[2:3], v0
; GFX9-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-BACKOFF-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-BACKOFF-LABEL: back_off_barrier_no_fence:
; GFX10-BACKOFF: ; %bb.0:
; GFX10-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX10-BACKOFF-NEXT: flat_load_dword v0, v[0:1]
; GFX10-BACKOFF-NEXT: s_barrier
; GFX10-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX10-BACKOFF-NEXT: flat_store_dword v[2:3], v0
; GFX10-BACKOFF-NEXT: s_waitcnt lgkmcnt(0)
; GFX10-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX10-BACKOFF-NEXT: s_setpc_b64 s[30:31]
;
; GFX11-BACKOFF-LABEL: back_off_barrier_no_fence:
; GFX11-BACKOFF: ; %bb.0:
; GFX11-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX11-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX11-BACKOFF-NEXT: flat_load_b32 v0, v[0:1]
; GFX11-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX11-BACKOFF-NEXT: s_barrier
; GFX11-BACKOFF-NEXT: flat_store_b32 v[2:3], v0
; GFX11-BACKOFF-NEXT: s_waitcnt lgkmcnt(0)
; GFX11-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX11-BACKOFF-NEXT: s_setpc_b64 s[30:31]
%load = load i32, ptr %in
call void @llvm.amdgcn.s.barrier()
store i32 %load, ptr %out
ret void
}
define void @back_off_barrier_with_fence(ptr %in, ptr %out) #0 {
; GFX9-NO-BACKOFF-LABEL: back_off_barrier_with_fence:
; GFX9-NO-BACKOFF: ; %bb.0:
; GFX9-NO-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NO-BACKOFF-NEXT: flat_load_dword v0, v[0:1]
; GFX9-NO-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-NO-BACKOFF-NEXT: s_barrier
; GFX9-NO-BACKOFF-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-NO-BACKOFF-NEXT: flat_store_dword v[2:3], v0
; GFX9-NO-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-NO-BACKOFF-NEXT: s_setpc_b64 s[30:31]
;
; GFX9-BACKOFF-LABEL: back_off_barrier_with_fence:
; GFX9-BACKOFF: ; %bb.0:
; GFX9-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-BACKOFF-NEXT: flat_load_dword v0, v[0:1]
; GFX9-BACKOFF-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-BACKOFF-NEXT: s_barrier
; GFX9-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-BACKOFF-NEXT: flat_store_dword v[2:3], v0
; GFX9-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX9-BACKOFF-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-BACKOFF-LABEL: back_off_barrier_with_fence:
; GFX10-BACKOFF: ; %bb.0:
; GFX10-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX10-BACKOFF-NEXT: flat_load_dword v0, v[0:1]
; GFX10-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX10-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX10-BACKOFF-NEXT: s_barrier
; GFX10-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX10-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX10-BACKOFF-NEXT: buffer_gl0_inv
; GFX10-BACKOFF-NEXT: flat_store_dword v[2:3], v0
; GFX10-BACKOFF-NEXT: s_waitcnt lgkmcnt(0)
; GFX10-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX10-BACKOFF-NEXT: s_setpc_b64 s[30:31]
;
; GFX11-BACKOFF-LABEL: back_off_barrier_with_fence:
; GFX11-BACKOFF: ; %bb.0:
; GFX11-BACKOFF-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX11-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX11-BACKOFF-NEXT: flat_load_b32 v0, v[0:1]
; GFX11-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX11-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX11-BACKOFF-NEXT: s_barrier
; GFX11-BACKOFF-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
; GFX11-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX11-BACKOFF-NEXT: buffer_gl0_inv
; GFX11-BACKOFF-NEXT: flat_store_b32 v[2:3], v0
; GFX11-BACKOFF-NEXT: s_waitcnt lgkmcnt(0)
; GFX11-BACKOFF-NEXT: s_waitcnt_vscnt null, 0x0
; GFX11-BACKOFF-NEXT: s_setpc_b64 s[30:31]
%load = load i32, ptr %in
fence syncscope("workgroup") release
call void @llvm.amdgcn.s.barrier()
fence syncscope("workgroup") acquire
store i32 %load, ptr %out
ret void
}
declare void @llvm.amdgcn.s.barrier()
attributes #0 = { nounwind }
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