James Molloy | 7c33657 | 2015-02-11 12:15:41 +0000 | [diff] [blame] | 1 | ; The phi should not be eliminated in this case, because the divide op could trap. |
Michael Gottesman | ccc93e7 | 2013-04-09 05:18:53 +0000 | [diff] [blame] | 2 | ; RUN: opt < %s -simplifycfg -S | FileCheck %s |
Chris Lattner | f391883 | 2008-01-03 07:25:26 +0000 | [diff] [blame] | 3 | |
| 4 | target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" |
| 5 | target triple = "i686-apple-darwin8" |
James Molloy | 7c33657 | 2015-02-11 12:15:41 +0000 | [diff] [blame] | 6 | @G = weak global i32 0, align 8 ; <i32*> [#uses=2] |
Chris Lattner | f391883 | 2008-01-03 07:25:26 +0000 | [diff] [blame] | 7 | |
James Molloy | 7c33657 | 2015-02-11 12:15:41 +0000 | [diff] [blame] | 8 | define void @test(i32 %X, i32 %Y, i32 %Z) { |
Chris Lattner | f391883 | 2008-01-03 07:25:26 +0000 | [diff] [blame] | 9 | entry: |
| 10 | %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 11 | %tmp = load i32, i32* @G, align 8 ; <i32> [#uses=2] |
Chris Lattner | f391883 | 2008-01-03 07:25:26 +0000 | [diff] [blame] | 12 | %tmp3 = icmp eq i32 %X, %Y ; <i1> [#uses=1] |
| 13 | %tmp34 = zext i1 %tmp3 to i8 ; <i8> [#uses=1] |
| 14 | %toBool = icmp ne i8 %tmp34, 0 ; <i1> [#uses=1] |
| 15 | br i1 %toBool, label %cond_true, label %cond_next |
| 16 | |
| 17 | cond_true: ; preds = %entry |
James Molloy | 7c33657 | 2015-02-11 12:15:41 +0000 | [diff] [blame] | 18 | %tmp7 = udiv i32 %tmp, %Z ; <i32> [#uses=1] |
Chris Lattner | f391883 | 2008-01-03 07:25:26 +0000 | [diff] [blame] | 19 | br label %cond_next |
| 20 | |
| 21 | cond_next: ; preds = %cond_true, %entry |
James Molloy | 7c33657 | 2015-02-11 12:15:41 +0000 | [diff] [blame] | 22 | ; CHECK: = phi i32 |
| 23 | %F.0 = phi i32 [ %tmp, %entry ], [ %tmp7, %cond_true ] ; <i32> [#uses=1] |
| 24 | store i32 %F.0, i32* @G, align 8 |
Chris Lattner | f391883 | 2008-01-03 07:25:26 +0000 | [diff] [blame] | 25 | ret void |
| 26 | } |
| 27 | |