| Dan Gohman | 3b20517 | 2012-01-05 23:58:56 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -simplifycfg -S | FileCheck %s |
| Chris Lattner | 6ff645b | 2009-01-19 23:03:13 +0000 | [diff] [blame] | 2 | ; PR3354 |
| 3 | ; Do not merge bb1 into the entry block, it might trap. |
| 4 | |
| 5 | @G = extern_weak global i32 |
| 6 | |
| Dan Gohman | 3b20517 | 2012-01-05 23:58:56 +0000 | [diff] [blame] | 7 | ; CHECK: @test( |
| 8 | ; CHECK: br i1 %tmp25 |
| 9 | ; CHECK: bb1: |
| 10 | ; CHECK: sdiv |
| 11 | |
| Chris Lattner | 6ff645b | 2009-01-19 23:03:13 +0000 | [diff] [blame] | 12 | define i32 @test(i32 %tmp21, i32 %tmp24) { |
| 13 | %tmp25 = icmp sle i32 %tmp21, %tmp24 |
| 14 | br i1 %tmp25, label %bb2, label %bb1 |
| 15 | |
| 16 | bb1: ; preds = %bb |
| 17 | %tmp26 = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0 |
| 18 | br i1 %tmp26, label %bb6, label %bb2 |
| 19 | bb2: |
| 20 | ret i32 42 |
| 21 | |
| 22 | bb6: |
| Bill Wendling | 47e208b | 2011-09-02 22:41:11 +0000 | [diff] [blame] | 23 | ret i32 927 |
| Chris Lattner | 6ff645b | 2009-01-19 23:03:13 +0000 | [diff] [blame] | 24 | } |
| 25 | |
| Dan Gohman | 3b20517 | 2012-01-05 23:58:56 +0000 | [diff] [blame] | 26 | ; CHECK: @test2( |
| 27 | ; CHECK: br i1 %tmp34 |
| 28 | ; CHECK: bb5: |
| 29 | ; CHECK: sdiv |
| 30 | |
| Chris Lattner | 63bf29b | 2009-01-20 01:15:41 +0000 | [diff] [blame] | 31 | define i32 @test2(i32 %tmp21, i32 %tmp24, i1 %tmp34) { |
| 32 | br i1 %tmp34, label %bb5, label %bb6 |
| 33 | |
| 34 | bb5: ; preds = %bb4 |
| Chris Lattner | 1c2ad9f | 2009-01-22 07:08:58 +0000 | [diff] [blame] | 35 | br i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), label %bb6, label %bb7 |
| Chris Lattner | 63bf29b | 2009-01-20 01:15:41 +0000 | [diff] [blame] | 36 | bb6: |
| 37 | ret i32 42 |
| 38 | bb7: |
| Bill Wendling | 47e208b | 2011-09-02 22:41:11 +0000 | [diff] [blame] | 39 | ret i32 927 |
| Chris Lattner | 63bf29b | 2009-01-20 01:15:41 +0000 | [diff] [blame] | 40 | } |
| 41 | |