| ; RUN: opt -mtriple=amdgcn-- -amdgpu-use-legacy-divergence-analysis -enable-new-pm=0 -analyze -divergence %s | FileCheck %s |
| |
| ; CHECK-LABEL: 'test1': |
| ; CHECK-NEXT: DIVERGENT: i32 %bound |
| ; CHECK: {{^ *}}%counter = |
| ; CHECK-NEXT: DIVERGENT: %break = icmp sge i32 %counter, %bound |
| ; CHECK-NEXT: DIVERGENT: br i1 %break, label %footer, label %body |
| ; CHECK: {{^ *}}%counter.next = |
| ; CHECK: {{^ *}}%counter.footer = |
| ; CHECK: DIVERGENT: br i1 %break, label %end, label %header |
| ; Note: %counter is not divergent! |
| define amdgpu_ps void @test1(i32 %bound) { |
| entry: |
| br label %header |
| |
| header: |
| %counter = phi i32 [ 0, %entry ], [ %counter.footer, %footer ] |
| %break = icmp sge i32 %counter, %bound |
| br i1 %break, label %footer, label %body |
| |
| body: |
| %counter.next = add i32 %counter, 1 |
| br label %footer |
| |
| footer: |
| %counter.footer = phi i32 [ %counter.next, %body ], [ undef, %header ] |
| br i1 %break, label %end, label %header |
| |
| end: |
| ret void |
| } |
