| ; RUN: opt < %s -passes=gvn -S | FileCheck %s |
| 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" |
| target triple = "x86_64-apple-macosx10.7.0" |
| |
| ; rdar://12801584 |
| ; Value of %shouldExit can be changed by RunInMode. |
| ; Make sure we do not replace load %shouldExit in while.cond.backedge |
| ; with a phi node where the value from while.body is 0. |
| define i32 @test() nounwind ssp { |
| entry: |
| ; CHECK: test() |
| ; CHECK: while.body: |
| ; CHECK: call void @RunInMode |
| ; CHECK: br i1 %tobool, label %while.cond.backedge, label %if.then |
| ; CHECK: while.cond.backedge: |
| ; CHECK: load i32, ptr %shouldExit |
| ; CHECK: br i1 %cmp, label %while.body |
| %shouldExit = alloca i32, align 4 |
| %tasksIdle = alloca i32, align 4 |
| store i32 0, ptr %shouldExit, align 4 |
| store i32 0, ptr %tasksIdle, align 4 |
| call void @CTestInitialize(ptr %tasksIdle) nounwind |
| %0 = load i32, ptr %shouldExit, align 4 |
| %cmp1 = icmp eq i32 %0, 0 |
| br i1 %cmp1, label %while.body.lr.ph, label %while.end |
| |
| while.body.lr.ph: |
| br label %while.body |
| |
| while.body: |
| call void @RunInMode(i32 100) nounwind |
| %1 = load i32, ptr %tasksIdle, align 4 |
| %tobool = icmp eq i32 %1, 0 |
| br i1 %tobool, label %while.cond.backedge, label %if.then |
| |
| if.then: |
| store i32 0, ptr %tasksIdle, align 4 |
| call void @TimerCreate(ptr %shouldExit) nounwind |
| br label %while.cond.backedge |
| |
| while.cond.backedge: |
| %2 = load i32, ptr %shouldExit, align 4 |
| %cmp = icmp eq i32 %2, 0 |
| br i1 %cmp, label %while.body, label %while.cond.while.end_crit_edge |
| |
| while.cond.while.end_crit_edge: |
| br label %while.end |
| |
| while.end: |
| ret i32 0 |
| } |
| declare void @CTestInitialize(ptr) |
| declare void @RunInMode(i32) |
| declare void @TimerCreate(ptr) |