# RUN: llc -mtriple=amdgcn -run-pass=si-memory-legalizer %s -o - | FileCheck %s
--- |
declare i32 @llvm.amdgcn.workitem.id.x() #0
define amdgpu_kernel void @atomic_max_i32_noret(
ptr addrspace(1) %out,
ptr addrspace(1) %in,
ptr addrspace(1) %x,
i32 %y) #1 {
%tid = call i32 @llvm.amdgcn.workitem.id.x()
%idxprom = sext i32 %tid to i64
%tid.gep = getelementptr ptr addrspace(1), ptr addrspace(1) %in, i64 %idxprom
%ptr = load volatile ptr addrspace(1), ptr addrspace(1) %tid.gep
%xor = xor i32 %tid, 1
%cmp = icmp ne i32 %xor, 0
%1 = call { i1, i64 } @llvm.amdgcn.if(i1 %cmp)
%2 = extractvalue { i1, i64 } %1, 0
%3 = extractvalue { i1, i64 } %1, 1
br i1 %2, label %atomic, label %exit
atomic: ; preds = %0
%gep = getelementptr i32, ptr addrspace(1) %ptr, i32 100
%ret = atomicrmw max ptr addrspace(1) %gep, i32 %y seq_cst
br label %exit
exit: ; preds = %atomic, %0
call void @llvm.amdgcn.end.cf(i64 %3)
ret void
}
declare { i1, i64 } @llvm.amdgcn.if(i1)
declare void @llvm.amdgcn.end.cf(i64)
attributes #0 = { nounwind readnone }
attributes #1 = { nounwind "target-cpu"="gfx803" }
...
---
# CHECK-LABEL: name: atomic_max_i32_noret
# CHECK-LABEL: bb.1.atomic:
# CHECK: BUFFER_ATOMIC_SMAX_ADDR64
# CHECK-NEXT: S_WAITCNT_soft 3952
# CHECK-NEXT: BUFFER_WBINVL1_VOL
name: atomic_max_i32_noret
alignment: 1
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
tracksRegLiveness: true
liveins:
- { reg: '$sgpr0_sgpr1' }
- { reg: '$vgpr0' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
body: |
bb.0 (%ir-block.0):
successors: %bb.1.atomic(0x40000000), %bb.2.exit(0x40000000)
liveins: $vgpr0, $sgpr0_sgpr1
$sgpr4_sgpr5 = S_LOAD_DWORDX2_IMM $sgpr0_sgpr1, 11, 0 :: (non-temporal dereferenceable invariant load (s64) from `ptr addrspace(4) undef`)
$vgpr1 = V_ASHRREV_I32_e32 31, $vgpr0, implicit $exec
$vgpr1_vgpr2 = V_LSHL_B64_e64 $vgpr0_vgpr1, 3, implicit $exec
$sgpr7 = S_MOV_B32 61440
$sgpr6 = S_MOV_B32 0
S_WAITCNT 127
$vgpr1_vgpr2 = BUFFER_LOAD_DWORDX2_ADDR64 killed $vgpr1_vgpr2, $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0, 0, implicit $exec :: (volatile load (s64) from %ir.tid.gep)
$vgpr0 = V_XOR_B32_e32 1, killed $vgpr0, implicit $exec
V_CMP_NE_U32_e32 0, killed $vgpr0, implicit-def $vcc, implicit $exec
$sgpr2_sgpr3 = S_AND_SAVEEXEC_B64 killed $vcc, implicit-def $exec, implicit-def $scc, implicit $exec
$sgpr2_sgpr3 = S_XOR_B64 $exec, killed $sgpr2_sgpr3, implicit-def dead $scc
S_CBRANCH_EXECZ %bb.2.exit, implicit $exec
bb.1.atomic:
successors: %bb.2.exit(0x80000000)
liveins: $sgpr4_sgpr5_sgpr6_sgpr7:0x0000000C, $sgpr0_sgpr1, $sgpr2_sgpr3, $vgpr1_vgpr2_vgpr3_vgpr4:0x00000003
$sgpr0 = S_LOAD_DWORD_IMM killed $sgpr0_sgpr1, 15, 0 :: (non-temporal dereferenceable invariant load (s32) from `ptr addrspace(4) undef`)
dead $vgpr0 = V_MOV_B32_e32 -1, implicit $exec
dead $vgpr0 = V_MOV_B32_e32 61440, implicit $exec
$sgpr4_sgpr5 = S_MOV_B64 0
S_WAITCNT 127
$vgpr0 = V_MOV_B32_e32 killed $sgpr0, implicit $exec, implicit $exec
S_WAITCNT 3952
BUFFER_ATOMIC_SMAX_ADDR64 killed $vgpr0, killed $vgpr1_vgpr2, killed $sgpr4_sgpr5_sgpr6_sgpr7, 0, 400, 0, implicit $exec :: (volatile load syncscope("one-as") seq_cst (s32) from %ir.gep)
bb.2.exit:
liveins: $sgpr2_sgpr3
$exec = S_OR_B64 $exec, killed $sgpr2_sgpr3, implicit-def $scc
S_ENDPGM 0
...
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