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

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

--- |
  target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64--"
  @var = external dso_local global i8
  define i8* @test_global() { ret i8* undef }
  define i8* @test_global_with_offset() { ret i8* undef }
...
---
name:            test_global
registers:
  - { id: 0, class: _ }
body: |
  bb.0:

    ; We don't want to lower to G_ADD_LOW when we need a GOT access, or when the code
    ; model isn't 'Small'.
    ; CHECK-LABEL: name: test_global
    ; CHECK: [[ADRP:%[0-9]+]]:gpr64(p0) = ADRP target-flags(aarch64-page) @var
    ; CHECK: [[ADD_LOW:%[0-9]+]]:_(p0) = G_ADD_LOW [[ADRP]](p0), target-flags(aarch64-pageoff, aarch64-nc) @var
    ; CHECK: [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[ADD_LOW]](p0)
    ; CHECK: $x0 = COPY [[PTRTOINT]](s64)
    ; CMLARGE-LABEL: name: test_global
    ; CMLARGE: [[GV:%[0-9]+]]:_(p0) = G_GLOBAL_VALUE @var
    ; CMLARGE: [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[GV]](p0)
    ; CMLARGE: $x0 = COPY [[PTRTOINT]](s64)
    %0(p0) = G_GLOBAL_VALUE @var
    %1:_(s64) = G_PTRTOINT %0
    $x0 = COPY %1
...
---
name:            test_global_with_offset
body: |
  bb.0:
    ; When we legalize into ADRP + G_ADD_LOW, both should inherit the offset
    ; from the original G_GLOBAL_VALUE.
    ;
    ; CHECK-LABEL: name: test_global_with_offset
    ; CHECK: [[ADRP:%[0-9]+]]:gpr64(p0) = ADRP target-flags(aarch64-page) @var + 1
    ; CHECK: [[ADD_LOW:%[0-9]+]]:_(p0) = G_ADD_LOW [[ADRP]](p0), target-flags(aarch64-pageoff, aarch64-nc) @var + 1
    ; CHECK: [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[ADD_LOW]](p0)
    ; CHECK: $x0 = COPY [[PTRTOINT]](s64)
    ; CMLARGE-LABEL: name: test_global_with_offset
    ; CMLARGE: [[GV:%[0-9]+]]:_(p0) = G_GLOBAL_VALUE @var + 1
    ; CMLARGE: [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[GV]](p0)
    ; CMLARGE: $x0 = COPY [[PTRTOINT]](s64)
    %0:_(p0) = G_GLOBAL_VALUE @var + 1
    %1:_(s64) = G_PTRTOINT %0
    $x0 = COPY %1
...