1 ; RUN: opt < %s -passes=gvn -S | FileCheck %s
2 target 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"
3 target triple = "x86_64-apple-macosx10.7.0"
6 ; Value of %shouldExit can be changed by RunInMode.
7 ; Make sure we do not replace load %shouldExit in while.cond.backedge
8 ; with a phi node where the value from while.body is 0.
9 define i32 @test() nounwind ssp {
13 ; CHECK: call void @RunInMode
14 ; CHECK: br i1 %tobool, label %while.cond.backedge, label %if.then
15 ; CHECK: while.cond.backedge:
16 ; CHECK: load i32, ptr %shouldExit
17 ; CHECK: br i1 %cmp, label %while.body
18 %shouldExit = alloca i32, align 4
19 %tasksIdle = alloca i32, align 4
20 store i32 0, ptr %shouldExit, align 4
21 store i32 0, ptr %tasksIdle, align 4
22 call void @CTestInitialize(ptr %tasksIdle) nounwind
23 %0 = load i32, ptr %shouldExit, align 4
24 %cmp1 = icmp eq i32 %0, 0
25 br i1 %cmp1, label %while.body.lr.ph, label %while.end
31 call void @RunInMode(i32 100) nounwind
32 %1 = load i32, ptr %tasksIdle, align 4
33 %tobool = icmp eq i32 %1, 0
34 br i1 %tobool, label %while.cond.backedge, label %if.then
37 store i32 0, ptr %tasksIdle, align 4
38 call void @TimerCreate(ptr %shouldExit) nounwind
39 br label %while.cond.backedge
42 %2 = load i32, ptr %shouldExit, align 4
43 %cmp = icmp eq i32 %2, 0
44 br i1 %cmp, label %while.body, label %while.cond.while.end_crit_edge
46 while.cond.while.end_crit_edge:
52 declare void @CTestInitialize(ptr)
53 declare void @RunInMode(i32)
54 declare void @TimerCreate(ptr)