| ; RUN: opt -mtriple amdgcn-unknown-amdhsa -passes='print<divergence>' -disable-output %s 2>&1 | FileCheck %s |
| |
| ; CHECK: bb3: |
| ; CHECK: DIVERGENT: %Guard.bb4 = phi i1 [ true, %bb1 ], [ false, %bb2 ] |
| ; CHECK: DIVERGENT: br i1 %Guard.bb4, label %bb4, label %bb5 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare i32 @llvm.amdgcn.workitem.id.x() #0 |
| |
| define protected amdgpu_kernel void @test() { |
| bb0: |
| %tid.x = call i32 @llvm.amdgcn.workitem.id.x() |
| %i5 = icmp eq i32 %tid.x, -1 |
| br label %bb1 |
| |
| bb1: ; preds = %bb2, %bb0 |
| %lsr.iv = phi i32 [ 7, %bb0 ], [ %lsr.iv.next, %bb2 ] |
| br i1 %i5, label %bb2, label %bb3 |
| |
| bb2: ; preds = %bb1 |
| %lsr.iv.next = add nsw i32 %lsr.iv, -1 |
| %i14 = icmp eq i32 %lsr.iv.next, 0 |
| br i1 %i14, label %bb3, label %bb1 |
| |
| bb3: ; preds = %bb2, %bb1 |
| %Guard.bb4 = phi i1 [ true, %bb1 ], [ false, %bb2 ] |
| br i1 %Guard.bb4, label %bb4, label %bb5 |
| |
| bb4: ; preds = %bb3 |
| br label %bb5 |
| |
| bb5: ; preds = %bb3, %bb4 |
| ret void |
| } |
| |
| attributes #0 = { nounwind readnone speculatable } |