test/CodeGen/X86/GlobalISel/select-GV.mir

# RUN: llc -mtriple=x86_64-linux-gnu                          -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X64ALL --check-prefix=X64
# RUN: llc -mtriple=x86_64-apple-darwin -relocation-model=pic -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X64ALL --check-prefix=X64_DARWIN_PIC
# RUN: llc -mtriple=i386-linux-gnu                            -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X32ALL --check-prefix=X32
# RUN: llc -mtriple=x86_64-linux-gnux32                       -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X32ALL --check-prefix=X32ABI

--- |

  @g_int = global i32 0, align 4

  define i32* @test_global_ptrv() {
  entry:
    ret i32* @g_int
  }

  define i32 @test_global_valv() {
  entry:
    %0 = load i32, i32* @g_int, align 4
    ret i32 %0
  }

...
---
name:            test_global_ptrv
# CHECK-LABEL: name:  test_global_ptrv
alignment:       4
legalized:       true
regBankSelected: true
# X64ALL:              registers:
# X64ALL-NEXT:           - { id: 0, class: gr64, preferred-register: '' }
#
# X32ALL:              registers:
# X32ALL-NEXT:           - { id: 0, class: gr32, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
# X64:                     %0 = LEA64r _, 1, _, @g_int, _
# X64-NEXT:                %rax = COPY %0
# X64-NEXT:                RET 0, implicit %rax
#
# X64_DARWIN_PIC:          %0 = LEA64r %rip, 1, _, @g_int, _
# X64_DARWIN_PIC-NEXT:     %rax = COPY %0
# X64_DARWIN_PIC-NEXT:     RET 0, implicit %rax
#
# X32:                     %0 = LEA32r _, 1, _, @g_int, _
# X32-NEXT:                %rax = COPY %0
# X32-NEXT:                RET 0, implicit %rax
#
# X32ABI:                  %0 = LEA64_32r _, 1, _, @g_int, _
# X32ABI-NEXT:             %rax = COPY %0
# X32ABI-NEXT:             RET 0, implicit %rax
body:             |
  bb.1.entry:
    %0(p0) = G_GLOBAL_VALUE @g_int
    %rax = COPY %0(p0)
    RET 0, implicit %rax

...
---
name:            test_global_valv
# CHECK-LABEL: name:  test_global_valv
alignment:       4
legalized:       true
regBankSelected: true
# X64ALL:              registers:
# X64ALL-NEXT:           - { id: 0, class: gr32, preferred-register: '' }
# X64ALL-NEXT:           - { id: 1, class: gr64, preferred-register: '' }
#
# X32ALL:              registers:
# X32ALL-NEXT:           - { id: 0, class: gr32, preferred-register: '' }
# X32ALL-NEXT:           - { id: 1, class: gr32, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: gpr, preferred-register: '' }
# X64:                     %1 = LEA64r _, 1, _, @g_int, _
# X64-NEXT:                %0 = MOV32rm %1, 1, _, 0, _ :: (load 4 from @g_int)
# X64-NEXT:                %eax = COPY %0
# X64-NEXT:                RET 0, implicit %eax
#
# X64_DARWIN_PIC:          %1 = LEA64r %rip, 1, _, @g_int, _
# X64_DARWIN_PIC-NEXT:     %0 = MOV32rm %1, 1, _, 0, _ :: (load 4 from @g_int)
# X64_DARWIN_PIC-NEXT:     %eax = COPY %0
# X64_DARWIN_PIC-NEXT:     RET 0, implicit %eax
#
# X32:                     %1 = LEA32r _, 1, _, @g_int, _
# X32-NEXT:                %0 = MOV32rm %1, 1, _, 0, _ :: (load 4 from @g_int)
# X32-NEXT:                %eax = COPY %0
# X32-NEXT:                RET 0, implicit %eax
#
# X32ABI:                  %1 = LEA64_32r _, 1, _, @g_int, _
# X32ABI-NEXT:             %0 = MOV32rm %1, 1, _, 0, _ :: (load 4 from @g_int)
# X32ABI-NEXT:             %eax = COPY %0
# X32ABI-NEXT:             RET 0, implicit %eax
body:             |
  bb.1.entry:
    %1(p0) = G_GLOBAL_VALUE @g_int
    %0(s32) = G_LOAD %1(p0) :: (load 4 from @g_int)
    %eax = COPY %0(s32)
    RET 0, implicit %eax

...