derek.holloway
7502bf64a4
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35 lines
1.6 KiB
LLVM
35 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
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; RUN: llc -global-isel -new-reg-bank-select -mtriple=amdgcn -mcpu=gfx900 -stop-after=finalize-isel < %s | FileCheck %s
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declare void @readsMem(ptr) #0
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declare void @writesMem(ptr) #1
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define void @fence_loads(ptr %ptr) {
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; CHECK-LABEL: name: fence_loads
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; CHECK: bb.1 (%ir-block.0):
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; CHECK-NEXT: liveins: $vgpr0, $vgpr1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
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; CHECK-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
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; CHECK-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vreg_64 = REG_SEQUENCE [[COPY]], %subreg.sub0, [[COPY1]], %subreg.sub1
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; CHECK-NEXT: ATOMIC_FENCE 5, 1, mmra !0
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; CHECK-NEXT: [[FLAT_LOAD_UBYTE:%[0-9]+]]:vgpr_32 = FLAT_LOAD_UBYTE [[REG_SEQUENCE]], 0, 0, implicit $exec, implicit $flat_scr, mmra !1 :: (load acquire (s8) from %ir.ptr, align 4)
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; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 1
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; CHECK-NEXT: [[COPY2:%[0-9]+]]:vgpr_32 = COPY [[S_MOV_B32_]]
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; CHECK-NEXT: FLAT_STORE_BYTE [[REG_SEQUENCE]], [[COPY2]], 0, 0, implicit $exec, implicit $flat_scr, mmra !2 :: (store release (s8) into %ir.ptr, align 4)
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; CHECK-NEXT: SI_RETURN
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fence release, !mmra !0
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%ld = load atomic i8, ptr %ptr acquire, align 4, !mmra !2
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store atomic i8 1, ptr %ptr release, align 4, !mmra !1
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ret void
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}
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; TODO: test atomicrmw, cmpxchg - current lowering doesn't work and blows up on i1 PHIs.
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attributes #0 = { memory(read) }
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attributes #1 = { memory(write) }
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!0 = !{!"foo", !"bar"}
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!1 = !{!"bux", !"baz"}
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!2 = !{!0, !1}
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