test/CodeGen/AArch64/GlobalISel/legalize-undef.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer -O0 %s -o - | FileCheck %s
---
name:            test_implicit_def
body: |
  bb.0.entry:
    liveins:

    ; CHECK-LABEL: name: test_implicit_def
    ; CHECK: [[DEF:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
    ; CHECK: [[DEF1:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
    ; CHECK: [[MV:%[0-9]+]]:_(s128) = G_MERGE_VALUES [[DEF]](s64), [[DEF1]](s64)
    ; CHECK: [[TRUNC:%[0-9]+]]:_(s64) = G_TRUNC [[MV]](s128)
    ; CHECK: $x0 = COPY [[TRUNC]](s64)
    %0:_(s128) = G_IMPLICIT_DEF
    %1:_(s64) = G_TRUNC %0(s128)
    $x0 = COPY %1(s64)
...

---
name: test_implicit_def_s3
body: |
  bb.0:
    liveins:

    ; CHECK-LABEL: name: test_implicit_def_s3
    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 61
    ; CHECK: [[DEF:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
    ; CHECK: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[DEF]], [[C]]
    ; CHECK: [[ASHR:%[0-9]+]]:_(s64) = G_ASHR [[SHL]], [[C]]
    ; CHECK: $x0 = COPY [[ASHR]](s64)
    %0:_(s3) = G_IMPLICIT_DEF
    %1:_(s64) = G_SEXT %0
    $x0 = COPY %1(s64)
...

# FIXME: s2 not correctly handled