|  | ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s | 
|  | ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s | 
|  |  | 
|  | ; SILowerI1Copies was not handling IMPLICIT_DEF | 
|  | ; SI-LABEL: {{^}}br_implicit_def: | 
|  | ; SI: %bb.0: | 
|  | ; SI-NEXT: s_cbranch_scc1 | 
|  | define amdgpu_kernel void @br_implicit_def(i32 addrspace(1)* %out, i32 %arg) #0 { | 
|  | bb: | 
|  | br i1 undef, label %bb1, label %bb2 | 
|  |  | 
|  | bb1: | 
|  | store volatile i32 123, i32 addrspace(1)* %out | 
|  | ret void | 
|  |  | 
|  | bb2: | 
|  | ret void | 
|  | } | 
|  |  | 
|  | attributes #0 = { nounwind } |