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[AMDGPU] Add s-cluster-barrier.ll test. NFC #160353

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Sep 23, 2025
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[AMDGPU] Add s-cluster-barrier.ll test. NFC #160353

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34 changes: 34 additions & 0 deletions llvm/test/CodeGen/AMDGPU/s-cluster-barrier.ll
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc -global-isel=0 -mtriple=amdgcn -mcpu=gfx1250 < %s | FileCheck -check-prefixes=GFX12,GFX12-SDAG %s
; RUN: llc -global-isel=0 -mtriple=amdgcn -mcpu=gfx1250 < %s | FileCheck -check-prefixes=GFX12,GFX12-ISEL %s

define amdgpu_kernel void @kernel1() #0 {
; GFX12-LABEL: kernel1:
; GFX12: ; %bb.0:
; GFX12-NEXT: s_cmp_eq_u32 0, 0
; GFX12-NEXT: s_barrier_signal_isfirst -1
; GFX12-NEXT: s_barrier_wait -1
; GFX12-NEXT: s_cselect_b32 s0, -1, 0
; GFX12-NEXT: s_delay_alu instid0(SALU_CYCLE_1)
; GFX12-NEXT: s_and_not1_b32 vcc_lo, exec_lo, s0
; GFX12-NEXT: s_cbranch_vccnz .LBB0_2
; GFX12-NEXT: ; %bb.1:
; GFX12-NEXT: s_barrier_signal -3
; GFX12-NEXT: .LBB0_2:
; GFX12-NEXT: s_barrier_wait -3
; GFX12-NEXT: s_get_barrier_state s0, -3
; GFX12-NEXT: s_endpgm
call void @llvm.amdgcn.s.cluster.barrier()
%state3 = call i32 @llvm.amdgcn.s.get.barrier.state(i32 -3)
ret void
}

declare void @llvm.amdgcn.s.cluster.barrier() #1
declare i32 @llvm.amdgcn.s.get.barrier.state(i32) #1

attributes #0 = { nounwind }
attributes #1 = { convergent nounwind }
attributes #2 = { nounwind readnone }
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; GFX12-ISEL: {{.*}}
; GFX12-SDAG: {{.*}}