forked from OSchip/llvm-project
59 lines
1.8 KiB
LLVM
59 lines
1.8 KiB
LLVM
; RUN: opt -passes=gvn -S < %s | FileCheck %s
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@a = external local_unnamed_addr global i32, align 4
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@b = external local_unnamed_addr global i32, align 4
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; Function Attrs: nounwind readnone
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declare i32* @j() local_unnamed_addr #0
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; CHECK: define {{.*}}@k()
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define i64 @k() local_unnamed_addr {
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bb:
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br i1 undef, label %bb10.preheader, label %bb3
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bb10.preheader: ; preds = %bb
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br label %bb13
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bb3: ; preds = %bb
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%i4 = load i32, i32* @a, align 4
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%i5.not = icmp eq i32 %i4, 0
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br label %bb7
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bb7: ; preds = %bb3
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%i8 = tail call i32* @j()
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br label %bb37
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bb13: ; preds = %bb34, %bb10.preheader
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br i1 undef, label %bb30thread-pre-split, label %bb16
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bb16: ; preds = %bb13
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%i17 = tail call i32* @j()
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br i1 undef, label %bb22thread-pre-split, label %bb37.loopexit
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bb22thread-pre-split: ; preds = %bb16
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br label %bb27
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bb27: ; preds = %bb22thread-pre-split
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br i1 undef, label %bb30thread-pre-split, label %bb37.loopexit
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bb30thread-pre-split: ; preds = %bb27, %bb13
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%i31.pr = load i32, i32* @a, align 4
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%i32.not2 = icmp eq i32 %i31.pr, 0
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br label %bb34
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bb34: ; preds = %bb30thread-pre-split
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br i1 undef, label %bb37.loopexit, label %bb13
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bb37.loopexit: ; preds = %bb34, %bb27, %bb16
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br label %bb37
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bb37: ; preds = %bb37.loopexit, %bb7
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%i38 = load i32, i32* @a, align 4
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store i32 %i38, i32* @b, align 4
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%i39 = tail call i32* @j()
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unreachable
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}
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attributes #0 = { nounwind readnone }
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