1 ; RUN: llc < %s -march=amdgcn -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI --check-prefix=FUNC %s 2 ; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck --check-prefix=SI --check-prefix=FUNC %s 3 4 ; FUNC-LABEL: {{^}}break_inserted_outside_of_loop: 5 6 ; SI: [[LOOP_LABEL:[A-Z0-9]+]]: 7 ; Lowered break instructin: 8 ; SI: s_or_b64 9 ; Lowered Loop instruction: 10 ; SI: s_andn2_b64 11 ; s_cbranch_execnz [[LOOP_LABEL]] 12 ; SI: s_endpgm 13 define void @break_inserted_outside_of_loop(i32 addrspace(1)* %out, i32 %a, i32 %b) { 14 main_body: 15 %0 = and i32 %a, %b 16 %1 = trunc i32 %0 to i1 17 br label %ENDIF 18 19 ENDLOOP: 20 store i32 0, i32 addrspace(1)* %out 21 ret void 22 23 ENDIF: 24 br i1 %1, label %ENDLOOP, label %ENDIF 25 } 26 27 28 ; FUNC-LABEL: {{^}}phi_cond_outside_loop: 29 ; FIXME: This could be folded into the s_or_b64 instruction 30 ; SI: s_mov_b64 [[ZERO:s\[[0-9]+:[0-9]+\]]], 0 31 ; SI: [[LOOP_LABEL:[A-Z0-9]+]] 32 ; SI: v_cmp_ne_i32_e32 vcc, 0, v{{[0-9]+}} 33 34 ; SI_IF_BREAK instruction: 35 ; SI: s_or_b64 [[BREAK:s\[[0-9]+:[0-9]+\]]], vcc, [[ZERO]] 36 37 ; SI_LOOP instruction: 38 ; SI: s_andn2_b64 exec, exec, [[BREAK]] 39 ; SI: s_cbranch_execnz [[LOOP_LABEL]] 40 ; SI: s_endpgm 41 42 define void @phi_cond_outside_loop(i32 %a, i32 %b) { 43 entry: 44 %0 = icmp eq i32 %a , 0 45 br i1 %0, label %if, label %else 46 47 if: 48 br label %endif 49 50 else: 51 %1 = icmp eq i32 %b, 0 52 br label %endif 53 54 endif: 55 %2 = phi i1 [0, %if], [%1, %else] 56 br label %loop 57 58 loop: 59 br i1 %2, label %exit, label %loop 60 61 exit: 62 ret void 63 } 64
