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

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s

--- |
  target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64--"
  define void @test_scalar_sub_small() {
  entry:
    ret void
  }
...

---
name:            test_scalar_sub_small
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
  - { id: 3, class: _ }
  - { id: 4, class: _ }
  - { id: 5, class: _ }
body: |
  bb.0.entry:
    liveins: %x0, %x1, %x2, %x3

    ; CHECK-LABEL: name: test_scalar_sub_small
    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
    ; CHECK: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[TRUNC]], [[TRUNC1]]
    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s8) = G_TRUNC [[SUB]](s32)
    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC2]](s8)
    ; CHECK: %x0 = COPY [[ANYEXT]](s64)
    %0(s64) = COPY %x0
    %1(s64) = COPY %x1
    %2(s8) = G_TRUNC %0
    %3(s8) = G_TRUNC %1
    %4(s8) = G_SUB %2, %3
    %5(s64) = G_ANYEXT %4
    %x0 = COPY %5
...