forked from OSchip/llvm-project
38 lines
1.0 KiB
LLVM
38 lines
1.0 KiB
LLVM
; RUN: opt -simplifycfg -S -o - < %s | FileCheck %s
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; This test case was written to trigger an incorrect assert statement in
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; -simplifycfg. Thus we don't actually want to check the output, just that
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; -simplifycfg ran successfully. Thus we only check that the function still
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; exists, and that it still calls foo().
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;
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; NOTE: There are some obviously dead blocks and missing branch weight
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; metadata. Both of these features were key to triggering the assert.
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; Additionally, the not-taken weight of the branch with a weight had to
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; be 0 to trigger the assert.
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declare void @foo() nounwind uwtable
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define void @func(i32 %A) nounwind uwtable {
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; CHECK-LABEL: define void @func(
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entry:
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%cmp11 = icmp eq i32 %A, 1
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br i1 %cmp11, label %if.then, label %if.else, !prof !0
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if.then:
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call void @foo()
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; CHECK: call void @foo()
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br label %if.else
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if.else:
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%cmp17 = icmp eq i32 %A, 2
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br i1 %cmp17, label %if.then2, label %if.end
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if.then2:
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br label %if.end
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if.end:
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ret void
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}
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!0 = metadata !{metadata !"branch_weights", i32 1, i32 0}
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