18 lines
633 B
LLVM
18 lines
633 B
LLVM
|
; RUN: opt %s -mtriple amdgcn-- -analyze -divergence -use-gpu-divergence-analysis | FileCheck %s
|
||
|
|
|
||
|
|
; CHECK: DIVERGENT: %tmp = cmpxchg volatile
|
||
|
|
define amdgpu_kernel void @unreachable_loop(i32 %tidx) #0 {
|
||
|
|
entry:
|
||
|
|
unreachable
|
||
|
|
|
||
|
|
unreachable_loop: ; preds = %do.body.i, %if.then11
|
||
|
|
%tmp = cmpxchg volatile i32 addrspace(1)* null, i32 0, i32 0 seq_cst seq_cst
|
||
|
|
%cmp.i = extractvalue { i32, i1 } %tmp, 1
|
||
|
|
br i1 %cmp.i, label %unreachable_loop, label %end
|
||
|
|
|
||
|
|
end: ; preds = %do.body.i51, %atomicAdd_g_f.exit
|
||
|
|
unreachable
|
||
|
|
}
|
||
|
|
|
||
|
|
attributes #0 = { norecurse nounwind }
|