forked from OSchip/llvm-project
61 lines
2.1 KiB
LLVM
61 lines
2.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -newgvn -S | FileCheck %s
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;; Block 6 is reachable, but edge 6->4 is not
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;; This means the phi value is undef, not 0
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; Function Attrs: ssp uwtable
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define i16 @hoge() local_unnamed_addr #0 align 2 {
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; CHECK-LABEL: @hoge(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: switch i8 undef, label [[BB7:%.*]] [
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; CHECK-NEXT: i8 0, label [[BB1:%.*]]
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; CHECK-NEXT: i8 12, label [[BB2:%.*]]
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; CHECK-NEXT: ]
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; CHECK: bb1:
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; CHECK-NEXT: br label [[BB6:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: br label [[BB4:%.*]]
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; CHECK: bb3:
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; CHECK-NEXT: unreachable
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; CHECK: bb4:
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; CHECK-NEXT: ret i16 undef
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; CHECK: bb6:
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; CHECK-NEXT: br i1 true, label [[BB3:%.*]], label [[BB4]], !llvm.loop !1
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; CHECK: bb7:
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; CHECK-NEXT: unreachable
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;
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bb:
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switch i8 undef, label %bb7 [
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i8 0, label %bb1
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i8 12, label %bb2
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]
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bb1: ; preds = %bb
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br label %bb6
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bb2: ; preds = %bb
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br label %bb4
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bb3: ; preds = %bb6
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unreachable
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bb4: ; preds = %bb6, %bb2
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%tmp = phi i16 [ 0, %bb6 ], [ undef, %bb2 ]
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ret i16 %tmp
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bb6: ; preds = %bb4
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br i1 true, label %bb3, label %bb4, !llvm.loop !1
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bb7: ; preds = %bb
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unreachable
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}
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attributes #0 = { ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 5.0.0"}
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!1 = distinct !{!1, !2}
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!2 = !{!"llvm.loop.unroll.disable"}
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