| Manman Ren | fe5a61e | 2013-01-04 19:19:47 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -basicaa -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" |
| 4 | |
| 5 | ; rdar://12801584 |
| 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 { |
| 10 | entry: |
| 11 | ; CHECK: test() |
| 12 | ; CHECK: while.body: |
| 13 | ; CHECK: call void @RunInMode |
| 14 | ; CHECK: br i1 %tobool, label %while.cond.backedge, label %if.then |
| 15 | ; CHECK: while.cond.backedge: |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 16 | ; CHECK: load i32, i32* %shouldExit |
| Manman Ren | fe5a61e | 2013-01-04 19:19:47 +0000 | [diff] [blame] | 17 | ; CHECK: br i1 %cmp, label %while.body |
| 18 | %shouldExit = alloca i32, align 4 |
| 19 | %tasksIdle = alloca i32, align 4 |
| 20 | store i32 0, i32* %shouldExit, align 4 |
| 21 | store i32 0, i32* %tasksIdle, align 4 |
| 22 | call void @CTestInitialize(i32* %tasksIdle) nounwind |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 23 | %0 = load i32, i32* %shouldExit, align 4 |
| Manman Ren | fe5a61e | 2013-01-04 19:19:47 +0000 | [diff] [blame] | 24 | %cmp1 = icmp eq i32 %0, 0 |
| 25 | br i1 %cmp1, label %while.body.lr.ph, label %while.end |
| 26 | |
| 27 | while.body.lr.ph: |
| 28 | br label %while.body |
| 29 | |
| 30 | while.body: |
| 31 | call void @RunInMode(i32 100) nounwind |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 32 | %1 = load i32, i32* %tasksIdle, align 4 |
| Manman Ren | fe5a61e | 2013-01-04 19:19:47 +0000 | [diff] [blame] | 33 | %tobool = icmp eq i32 %1, 0 |
| 34 | br i1 %tobool, label %while.cond.backedge, label %if.then |
| 35 | |
| 36 | if.then: |
| 37 | store i32 0, i32* %tasksIdle, align 4 |
| 38 | call void @TimerCreate(i32* %shouldExit) nounwind |
| 39 | br label %while.cond.backedge |
| 40 | |
| 41 | while.cond.backedge: |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 42 | %2 = load i32, i32* %shouldExit, align 4 |
| Manman Ren | fe5a61e | 2013-01-04 19:19:47 +0000 | [diff] [blame] | 43 | %cmp = icmp eq i32 %2, 0 |
| 44 | br i1 %cmp, label %while.body, label %while.cond.while.end_crit_edge |
| 45 | |
| 46 | while.cond.while.end_crit_edge: |
| 47 | br label %while.end |
| 48 | |
| 49 | while.end: |
| 50 | ret i32 0 |
| 51 | } |
| 52 | declare void @CTestInitialize(i32*) |
| 53 | declare void @RunInMode(i32) |
| 54 | declare void @TimerCreate(i32*) |