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1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py2# RUN: llc -mtriple aarch64-apple-ios -run-pass=aarch64-prelegalizer-combiner %s -o - -verify-machineinstrs | FileCheck %s3 4# This test checks the optimization to remove the G_TRUNC if we can determine it's redundant.5---6name: icmp_trunc_sextload7tracksRegLiveness: true8body: |9 bb.1:10 liveins: $x011 12 ; CHECK-LABEL: name: icmp_trunc_sextload13 ; CHECK: liveins: $x014 ; CHECK-NEXT: {{ $}}15 ; CHECK-NEXT: %v:_(p0) = COPY $x016 ; CHECK-NEXT: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load (s32))17 ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 018 ; CHECK-NEXT: %cmp:_(s1) = G_ICMP intpred(ne), %load(s64), [[C]]19 ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1)20 ; CHECK-NEXT: $w0 = COPY [[ANYEXT]](s32)21 ; CHECK-NEXT: RET_ReallyLR implicit $w022 %v:_(p0) = COPY $x023 %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load (s32))24 %trunc:_(s32) = G_TRUNC %load(s64)25 %zero:_(s32) = G_CONSTANT i32 026 %cmp:_(s1) = G_ICMP intpred(ne), %trunc(s32), %zero27 %5:_(s32) = G_ANYEXT %cmp28 $w0 = COPY %5(s32)29 RET_ReallyLR implicit $w030...31---32name: icmp_trunc_sextload_eq33tracksRegLiveness: true34body: |35 bb.1:36 liveins: $x037 38 ; CHECK-LABEL: name: icmp_trunc_sextload_eq39 ; CHECK: liveins: $x040 ; CHECK-NEXT: {{ $}}41 ; CHECK-NEXT: %v:_(p0) = COPY $x042 ; CHECK-NEXT: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load (s32))43 ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 044 ; CHECK-NEXT: %cmp:_(s1) = G_ICMP intpred(eq), %load(s64), [[C]]45 ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1)46 ; CHECK-NEXT: $w0 = COPY [[ANYEXT]](s32)47 ; CHECK-NEXT: RET_ReallyLR implicit $w048 %v:_(p0) = COPY $x049 %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load (s32))50 %trunc:_(s32) = G_TRUNC %load(s64)51 %zero:_(s32) = G_CONSTANT i32 052 %cmp:_(s1) = G_ICMP intpred(eq), %trunc(s32), %zero53 %5:_(s32) = G_ANYEXT %cmp54 $w0 = COPY %5(s32)55 RET_ReallyLR implicit $w056...57---58name: icmp_trunc_sextload_wrongpred59tracksRegLiveness: true60body: |61 bb.1:62 liveins: $x063 64 ; CHECK-LABEL: name: icmp_trunc_sextload_wrongpred65 ; CHECK: liveins: $x066 ; CHECK-NEXT: {{ $}}67 ; CHECK-NEXT: %v:_(p0) = COPY $x068 ; CHECK-NEXT: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load (s32))69 ; CHECK-NEXT: %trunc:_(s32) = G_TRUNC %load(s64)70 ; CHECK-NEXT: %zero:_(s32) = G_CONSTANT i32 071 ; CHECK-NEXT: %cmp:_(s1) = G_ICMP intpred(slt), %trunc(s32), %zero72 ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1)73 ; CHECK-NEXT: $w0 = COPY [[ANYEXT]](s32)74 ; CHECK-NEXT: RET_ReallyLR implicit $w075 %v:_(p0) = COPY $x076 %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load (s32))77 %trunc:_(s32) = G_TRUNC %load(s64)78 %zero:_(s32) = G_CONSTANT i32 079 %cmp:_(s1) = G_ICMP intpred(slt), %trunc(s32), %zero80 %5:_(s32) = G_ANYEXT %cmp81 $w0 = COPY %5(s32)82 RET_ReallyLR implicit $w083...84---85name: icmp_trunc_sextload_extend_mismatch86tracksRegLiveness: true87body: |88 bb.1:89 liveins: $x090 91 ; CHECK-LABEL: name: icmp_trunc_sextload_extend_mismatch92 ; CHECK: liveins: $x093 ; CHECK-NEXT: {{ $}}94 ; CHECK-NEXT: %v:_(p0) = COPY $x095 ; CHECK-NEXT: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load (s32))96 ; CHECK-NEXT: %trunc:_(s16) = G_TRUNC %load(s64)97 ; CHECK-NEXT: %zero:_(s16) = G_CONSTANT i16 098 ; CHECK-NEXT: %cmp:_(s1) = G_ICMP intpred(ne), %trunc(s16), %zero99 ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1)100 ; CHECK-NEXT: $w0 = COPY [[ANYEXT]](s32)101 ; CHECK-NEXT: RET_ReallyLR implicit $w0102 %v:_(p0) = COPY $x0103 %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load (s32))104 %trunc:_(s16) = G_TRUNC %load(s64)105 %zero:_(s16) = G_CONSTANT i16 0106 %cmp:_(s1) = G_ICMP intpred(ne), %trunc(s16), %zero107 %5:_(s32) = G_ANYEXT %cmp108 $w0 = COPY %5(s32)109 RET_ReallyLR implicit $w0110...111 112