1; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s 2; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s 3 4; SILowerI1Copies was not handling IMPLICIT_DEF 5; SI-LABEL: {{^}}br_implicit_def: 6; SI: BB#0: 7; SI-NEXT: s_and_b64 vcc, exec 8; SI-NEXT: s_cbranch_vccnz 9define void @br_implicit_def(i32 addrspace(1)* %out, i32 %arg) #0 { 10bb: 11 br i1 undef, label %bb1, label %bb2 12 13bb1: 14 store volatile i32 123, i32 addrspace(1)* %out 15 ret void 16 17bb2: 18 ret void 19} 20 21attributes #0 = { nounwind } 22