third_party/llvm-7.0/llvm/test/CodeGen/AArch64/GlobalISel/legalize-div.mir

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

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

---
name:            test_div
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_div
    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
    ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[TRUNC]], [[C]]
    ; CHECK: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]]
    ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
    ; CHECK: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[TRUNC1]], [[C1]]
    ; CHECK: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]]
    ; CHECK: [[SDIV:%[0-9]+]]:_(s32) = G_SDIV [[ASHR]], [[ASHR1]]
    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[SDIV]](s32)
    ; CHECK: $w0 = COPY [[COPY2]](s32)
    ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
    ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[TRUNC2]], [[C2]]
    ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
    ; CHECK: [[TRUNC3:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
    ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[TRUNC3]], [[C3]]
    ; CHECK: [[UDIV:%[0-9]+]]:_(s32) = G_UDIV [[AND]], [[AND1]]
    ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[UDIV]](s32)
    ; CHECK: $w0 = COPY [[COPY3]](s32)
    %0(s64) = COPY $x0
    %1(s64) = COPY $x1
    %2(s8) = G_TRUNC %0
    %3(s8) = G_TRUNC %1


    %4(s8) = G_SDIV %2, %3
    %6:_(s32) = G_ANYEXT %4
    $w0 = COPY %6


    %5(s8) = G_UDIV %2, %3
    %7:_(s32) = G_ANYEXT %5
    $w0 = COPY %7

...