32 lines
913 B
LLVM
32 lines
913 B
LLVM
|
; RUN: opt -mtriple=amdgcn-- -analyze -divergence -use-gpu-divergence-analysis %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
|
||
|
|
}
|