derek.holloway
7502bf64a4
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42 lines
1.4 KiB
LLVM
42 lines
1.4 KiB
LLVM
; RUN: opt -mtriple=amdgcn-- -S -structurizecfg -si-annotate-control-flow %s | FileCheck -check-prefix=OPT %s
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; RUN: opt -mtriple=amdgcn-- -S -passes=structurizecfg,si-annotate-control-flow %s | FileCheck -check-prefix=OPT %s
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; RUN: llc -mtriple=amdgcn < %s | FileCheck -check-prefix=GCN %s
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; OPT-LABEL: @annotate_unreachable(
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; OPT: call { i1, i64 } @llvm.amdgcn.if.i64(
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; OPT-NOT: call void @llvm.amdgcn.end.cf
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; GCN-LABEL: {{^}}annotate_unreachable:
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; GCN: s_and_saveexec_b64
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; GCN-NOT: s_endpgm
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; GCN: .Lfunc_end0
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define amdgpu_kernel void @annotate_unreachable(ptr addrspace(1) noalias nocapture readonly %arg, i1 %c0) #0 {
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bb:
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%tmp = tail call i32 @llvm.amdgcn.workitem.id.x()
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br label %bb1
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bb1: ; preds = %bb
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%tmp2 = sext i32 %tmp to i64
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%tmp3 = getelementptr inbounds <4 x float>, ptr addrspace(1) %arg, i64 %tmp2
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%tmp4 = load <4 x float>, ptr addrspace(1) %tmp3, align 16
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br i1 %c0, label %bb3, label %bb5 ; label order reversed
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bb3: ; preds = %bb1
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%tmp6 = extractelement <4 x float> %tmp4, i32 2
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%tmp7 = fcmp olt float %tmp6, 0.000000e+00
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br i1 %tmp7, label %bb4, label %bb5
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bb4: ; preds = %bb3
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unreachable
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bb5: ; preds = %bb3, %bb1
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unreachable
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}
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declare i32 @llvm.amdgcn.workitem.id.x() #1
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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