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comparison llvm/test/Transforms/StructurizeCFG/no-branch-to-entry.ll @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
1 ; XFAIL: *
2
3 ; This test used to generate a region that caused it to delete the entry block,
4 ; but it does not anymore after the changes to handling of infinite loops in the
5 ; PostDominatorTree.
6 ; TODO: This should be either replaced with another IR or deleted completely.
7
8 ; RUN: opt -S -o - -structurizecfg -verify-dom-info < %s | FileCheck %s
9
10 ; CHECK-LABEL: @no_branch_to_entry_undef(
11 ; CHECK: entry:
12 ; CHECK-NEXT: br label %entry.orig
13 define void @no_branch_to_entry_undef(i32 addrspace(1)* %out) {
14 entry:
15 br i1 undef, label %for.end, label %for.body
16
17 for.body: ; preds = %entry, %for.body
18 store i32 999, i32 addrspace(1)* %out, align 4
19 br label %for.body
20
21 for.end: ; preds = %Flow
22 ret void
23 }
24
25 ; CHECK-LABEL: @no_branch_to_entry_true(
26 ; CHECK: entry:
27 ; CHECK-NEXT: br label %entry.orig
28 define void @no_branch_to_entry_true(i32 addrspace(1)* %out) {
29 entry:
30 br i1 true, label %for.end, label %for.body
31
32 for.body: ; preds = %entry, %for.body
33 store i32 999, i32 addrspace(1)* %out, align 4
34 br label %for.body
35
36 for.end: ; preds = %Flow
37 ret void
38 }