1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py 2# RUN: llc -mtriple aarch64 -run-pass=legalizer -verify-machineinstrs %s -o - | FileCheck %s 3 4# This test checks we don't crash when doing zext(trunc) legalizer combines. 5--- 6name: zext_trunc_dead_inst_crash 7alignment: 4 8tracksRegLiveness: true 9body: | 10 ; CHECK-LABEL: name: zext_trunc_dead_inst_crash 11 ; CHECK: bb.0: 12 ; CHECK: successors: %bb.1(0x80000000) 13 ; CHECK: [[DEF:%[0-9]+]]:_(s16) = G_IMPLICIT_DEF 14 ; CHECK: bb.1: 15 ; CHECK: successors: %bb.2(0x80000000) 16 ; CHECK: [[PHI:%[0-9]+]]:_(s16) = G_PHI %32(s16), %bb.2, [[DEF]](s16), %bb.0 17 ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 255 18 ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16) 19 ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C]] 20 ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 46 21 ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[AND]](s32), [[C1]] 22 ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY [[ICMP]](s32) 23 ; CHECK: [[DEF1:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF 24 ; CHECK: [[OR:%[0-9]+]]:_(s32) = G_OR [[COPY]], [[DEF1]] 25 ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[ANYEXT]](s32) 26 ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 -33 27 ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C2]] 28 ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[AND1]](s32) 29 ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 -65 30 ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY2]], [[C3]] 31 ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[ADD]](s32) 32 ; CHECK: [[AND2:%[0-9]+]]:_(s32) = G_AND [[COPY3]], [[C]] 33 ; CHECK: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 26 34 ; CHECK: [[ICMP1:%[0-9]+]]:_(s32) = G_ICMP intpred(ult), [[AND2]](s32), [[C4]] 35 ; CHECK: [[COPY4:%[0-9]+]]:_(s32) = COPY [[ICMP1]](s32) 36 ; CHECK: [[COPY5:%[0-9]+]]:_(s32) = COPY [[OR]](s32) 37 ; CHECK: [[OR1:%[0-9]+]]:_(s32) = G_OR [[COPY4]], [[COPY5]] 38 ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[OR1]](s32) 39 ; CHECK: G_BRCOND [[TRUNC]](s1), %bb.2 40 ; CHECK: bb.2: 41 ; CHECK: successors: %bb.1(0x80000000) 42 ; CHECK: [[C5:%[0-9]+]]:_(s16) = G_CONSTANT i16 64 43 ; CHECK: G_BR %bb.1 44 bb.1: 45 %1:_(s8) = G_CONSTANT i8 46 46 %3:_(s1) = G_IMPLICIT_DEF 47 %5:_(s8) = G_CONSTANT i8 -33 48 %7:_(s8) = G_CONSTANT i8 -65 49 %9:_(s8) = G_CONSTANT i8 26 50 %13:_(s8) = G_IMPLICIT_DEF 51 52 bb.2: 53 %0:_(s8) = G_PHI %12(s8), %bb.4, %13(s8), %bb.1 54 %2:_(s1) = G_ICMP intpred(eq), %0(s8), %1 55 %4:_(s1) = G_OR %2, %3 56 %6:_(s8) = G_AND %0, %5 57 %8:_(s8) = G_ADD %6, %7 58 %10:_(s1) = G_ICMP intpred(ult), %8(s8), %9 59 %11:_(s1) = G_OR %10, %4 60 G_BRCOND %11(s1), %bb.4 61 62 bb.4: 63 %12:_(s8) = G_CONSTANT i8 64 64 G_BR %bb.2 65 66... 67