xref: /llvm-project/llvm/test/Transforms/NewGVN/MemdepMiscompile.ll (revision 229640343e400394b315c6798c7c19e8a9bd188c)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
2; RUN: opt < %s -passes=newgvn -S | FileCheck %s
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
4target triple = "x86_64-apple-macosx10.7.0"
5
6; rdar://12801584
7; Value of %shouldExit can be changed by RunInMode.
8; Make sure we do not replace load %shouldExit in while.cond.backedge
9; with a phi node where the value from while.body is 0.
10define i32 @test() nounwind ssp {
11; CHECK-LABEL: define i32 @test(
12; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
13; CHECK-NEXT:  entry:
14; CHECK-NEXT:    [[SHOULDEXIT:%.*]] = alloca i32, align 4
15; CHECK-NEXT:    [[TASKSIDLE:%.*]] = alloca i32, align 4
16; CHECK-NEXT:    store i32 0, ptr [[SHOULDEXIT]], align 4
17; CHECK-NEXT:    store i32 0, ptr [[TASKSIDLE]], align 4
18; CHECK-NEXT:    call void @CTestInitialize(ptr [[TASKSIDLE]]) #[[ATTR1:[0-9]+]]
19; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[SHOULDEXIT]], align 4
20; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq i32 [[TMP0]], 0
21; CHECK-NEXT:    br i1 [[CMP1]], label [[WHILE_BODY_LR_PH:%.*]], label [[WHILE_END:%.*]]
22; CHECK:       while.body.lr.ph:
23; CHECK-NEXT:    br label [[WHILE_BODY:%.*]]
24; CHECK:       while.body:
25; CHECK-NEXT:    call void @RunInMode(i32 100) #[[ATTR1]]
26; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[TASKSIDLE]], align 4
27; CHECK-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[TMP1]], 0
28; CHECK-NEXT:    br i1 [[TOBOOL]], label [[WHILE_COND_BACKEDGE:%.*]], label [[IF_THEN:%.*]]
29; CHECK:       if.then:
30; CHECK-NEXT:    store i32 0, ptr [[TASKSIDLE]], align 4
31; CHECK-NEXT:    call void @TimerCreate(ptr [[SHOULDEXIT]]) #[[ATTR1]]
32; CHECK-NEXT:    br label [[WHILE_COND_BACKEDGE]]
33; CHECK:       while.cond.backedge:
34; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[SHOULDEXIT]], align 4
35; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[TMP2]], 0
36; CHECK-NEXT:    br i1 [[CMP]], label [[WHILE_BODY]], label [[WHILE_COND_WHILE_END_CRIT_EDGE:%.*]]
37; CHECK:       while.cond.while.end_crit_edge:
38; CHECK-NEXT:    br label [[WHILE_END]]
39; CHECK:       while.end:
40; CHECK-NEXT:    ret i32 0
41;
42entry:
43  %shouldExit = alloca i32, align 4
44  %tasksIdle = alloca i32, align 4
45  store i32 0, ptr %shouldExit, align 4
46  store i32 0, ptr %tasksIdle, align 4
47  call void @CTestInitialize(ptr %tasksIdle) nounwind
48  %0 = load i32, ptr %shouldExit, align 4
49  %cmp1 = icmp eq i32 %0, 0
50  br i1 %cmp1, label %while.body.lr.ph, label %while.end
51
52while.body.lr.ph:
53  br label %while.body
54
55while.body:
56  call void @RunInMode(i32 100) nounwind
57  %1 = load i32, ptr %tasksIdle, align 4
58  %tobool = icmp eq i32 %1, 0
59  br i1 %tobool, label %while.cond.backedge, label %if.then
60
61if.then:
62  store i32 0, ptr %tasksIdle, align 4
63  call void @TimerCreate(ptr %shouldExit) nounwind
64  br label %while.cond.backedge
65
66while.cond.backedge:
67  %2 = load i32, ptr %shouldExit, align 4
68  %cmp = icmp eq i32 %2, 0
69  br i1 %cmp, label %while.body, label %while.cond.while.end_crit_edge
70
71while.cond.while.end_crit_edge:
72  br label %while.end
73
74while.end:
75  ret i32 0
76}
77declare void @CTestInitialize(ptr)
78declare void @RunInMode(i32)
79declare void @TimerCreate(ptr)
80