1 # RUN: llc -march=hexagon -verify-machineinstrs -run-pass branch-folder -o - %s | FileCheck %s 2 3 # CHECK-LABEL: name: fred 4 5 --- | 6 define void @fred() { ret void } 7 8 ... 9 --- 10 11 name: fred 12 tracksRegLiveness: true 13 14 body: | 15 bb.0: 16 liveins: $p0:0x1, $p2, $r0 17 successors: %bb.1, %bb.2 18 J2_jumpt killed $p2, %bb.1, implicit-def $pc 19 J2_jump %bb.2, implicit-def $pc 20 21 bb.1: 22 liveins: $p0:0x1, $r0, $r19 23 successors: %bb.3 24 $r2 = A2_tfrsi 4 25 $r1 = COPY $r19 26 $r0 = S2_asl_r_r killed $r0, killed $r2 27 $r0 = A2_asrh killed $r0 28 J2_jump %bb.3, implicit-def $pc 29 30 bb.2: 31 liveins: $p0:0x1, $r0, $r18 32 successors: %bb.3 33 $r2 = A2_tfrsi 5 34 $r1 = L2_loadrh_io $r18, 0 35 $r0 = S2_asl_r_r killed $r0, killed $r2 36 $r0 = A2_asrh killed $r0 37 38 bb.3: 39 ; A live-in register without subregs, but with a lane mask that is not ~0 40 ; is not recognized by LivePhysRegs. Branch folding exposes this problem 41 ; (through tail merging). 42 ; 43 ; CHECK: bb.3: 44 ; CHECK: liveins:{{.*}}$p0 45 ; CHECK: $r0 = S2_asl_r_r killed $r0, killed $r2 46 ; CHECK: $r0 = A2_asrh killed $r0 47 ; CHECK: $r0 = C2_cmoveit killed $p0, 1 48 ; CHECK: J2_jumpr $r31, implicit-def $pc, implicit $r0 49 ; 50 liveins: $p0:0x1 51 $r0 = C2_cmoveit killed $p0, 1 52 J2_jumpr $r31, implicit-def $pc, implicit $r0 53 ... 54 55 56
