derek.holloway
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26 lines
1.0 KiB
LLVM
26 lines
1.0 KiB
LLVM
; RUN: opt -aa-pipeline=globals-aa -passes='require<globals-aa>,gvn' -S < %s | FileCheck %s
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; RUN: opt -aa-pipeline=basic-aa,globals-aa -passes='require<globals-aa>,gvn' -S < %s | FileCheck %s
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;
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; Functions w/o `nosync` attribute may communicate via memory and must be
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; treated conservatively. Taken from https://reviews.llvm.org/D115302.
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target datalayout = "e-i64:64-i128:128-v16:16-v32:32-n16:32:64"
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target triple = "nvptx64-nvidia-cuda"
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@s = internal local_unnamed_addr addrspace(3) global i32 undef, align 4
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; CHECK-LABEL: @bar_sync
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; CHECK: store
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; CHECK: tail call void @llvm.nvvm.barrier.cta.sync.aligned.all(i32 0)
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; CHECK: load
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define dso_local i32 @bar_sync(i32 %0) local_unnamed_addr {
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store i32 %0, ptr addrspacecast (ptr addrspace(3) @s to ptr), align 4
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tail call void @llvm.nvvm.barrier.cta.sync.aligned.all(i32 0)
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%2 = load i32, ptr addrspacecast (ptr addrspace(3) @s to ptr), align 4
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ret i32 %2
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}
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declare void @llvm.nvvm.barrier.cta.sync.aligned.all(i32) #0
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attributes #0 = { convergent nounwind }
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