| Nicolai Haehnle | 13d90f3 | 2016-04-14 17:42:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -mtriple=amdgcn-- -analyze -divergence %s | FileCheck %s |
| 2 | |
| 3 | ; CHECK-LABEL: 'test1': |
| 4 | ; CHECK-NEXT: DIVERGENT: i32 %bound |
| 5 | ; CHECK-NEXT: DIVERGENT: %break = icmp sge i32 %counter, %bound |
| 6 | ; CHECK-NEXT: DIVERGENT: br i1 %break, label %footer, label %body |
| 7 | ; CHECK-NEXT: DIVERGENT: br i1 %break, label %end, label %header |
| 8 | ; Note: %counter is not divergent! |
| 9 | define amdgpu_ps void @test1(i32 %bound) { |
| 10 | entry: |
| 11 | br label %header |
| 12 | |
| 13 | header: |
| 14 | %counter = phi i32 [ 0, %entry ], [ %counter.footer, %footer ] |
| 15 | %break = icmp sge i32 %counter, %bound |
| 16 | br i1 %break, label %footer, label %body |
| 17 | |
| 18 | body: |
| 19 | %counter.next = add i32 %counter, 1 |
| 20 | br label %footer |
| 21 | |
| 22 | footer: |
| 23 | %counter.footer = phi i32 [ %counter.next, %body ], [ undef, %header ] |
| 24 | br i1 %break, label %end, label %header |
| 25 | |
| 26 | end: |
| 27 | ret void |
| 28 | } |