# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple aarch64 -run-pass=legalizer -verify-machineinstrs %s -o - | FileCheck %s
# This test checks we don't crash when doing zext(trunc) legalizer combines.
---
name: zext_trunc_dead_inst_crash
alignment: 4
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: zext_trunc_dead_inst_crash
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:_(s16) = G_IMPLICIT_DEF
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[PHI:%[0-9]+]]:_(s16) = G_PHI %33(s16), %bb.2, [[DEF]](s16), %bb.0
; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
; CHECK-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C]]
; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 46
; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[AND]](s32), [[C1]]
; CHECK-NEXT: [[DEF1:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
; CHECK-NEXT: [[OR:%[0-9]+]]:_(s32) = G_OR [[ICMP]], [[DEF1]]
; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY [[ANYEXT]](s32)
; CHECK-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 -33
; CHECK-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C2]]
; CHECK-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 -65
; CHECK-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[AND1]], [[C3]]
; CHECK-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[ADD]], [[C]]
; CHECK-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 26
; CHECK-NEXT: [[ICMP1:%[0-9]+]]:_(s32) = G_ICMP intpred(ult), [[AND2]](s32), [[C4]]
; CHECK-NEXT: [[OR1:%[0-9]+]]:_(s32) = G_OR [[ICMP1]], [[OR]]
; CHECK-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
; CHECK-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[OR1]], [[C5]]
; CHECK-NEXT: G_BRCOND [[AND3]](s32), %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[C6:%[0-9]+]]:_(s16) = G_CONSTANT i16 64
; CHECK-NEXT: G_BR %bb.1
bb.1:
%1:_(s8) = G_CONSTANT i8 46
%3:_(s1) = G_IMPLICIT_DEF
%5:_(s8) = G_CONSTANT i8 -33
%7:_(s8) = G_CONSTANT i8 -65
%9:_(s8) = G_CONSTANT i8 26
%13:_(s8) = G_IMPLICIT_DEF
bb.2:
%0:_(s8) = G_PHI %12(s8), %bb.4, %13(s8), %bb.1
%2:_(s1) = G_ICMP intpred(eq), %0(s8), %1
%4:_(s1) = G_OR %2, %3
%6:_(s8) = G_AND %0, %5
%8:_(s8) = G_ADD %6, %7
%10:_(s1) = G_ICMP intpred(ult), %8(s8), %9
%11:_(s1) = G_OR %10, %4
G_BRCOND %11(s1), %bb.4
bb.4:
%12:_(s8) = G_CONSTANT i8 64
G_BR %bb.2
...
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