llvm-project/llvm/test/CodeGen/MIR/X86/global-value-operands.mir

# RUN: llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s | FileCheck %s
# This test ensures that the MIR parser parses global value operands correctly.

--- |

  @G = external global i32
  @0 = external global i32

  define i32 @inc() {
  entry:
    %a = load i32, i32* @G
    %b = add i32 %a, 1
    ret i32 %b
  }

  define i32 @inc2() {
  entry:
    %a = load i32, i32* @0
    %b = add i32 %a, 1
    ret i32 %b
  }

  @.$0  = external global i32
  @-_-  = external global i32
  @_-_a = external global i32
  @$.-B = external global i32

  define i32 @test() {
  entry:
    %a = load i32, i32* @.$0
    store i32 %a, i32* @-_-
    %b = load i32, i32* @_-_a
    store i32 %b, i32* @$.-B
    ret i32 %b
  }

  @"\01Hello@$%09 \\ World," = external global i32

  define i32 @test2() {
  entry:
    %a = load i32, i32* @"\01Hello@$%09 \\ World,"
    ret i32 %a
  }

...
---
# CHECK: name: inc
name: inc
body:
  - id: 0
    name: entry
    instructions:
      # CHECK: - '%rax = MOV64rm %rip, 1, _, @G, _'
      - '%rax = MOV64rm %rip, 1, _, @G, _'
      - '%eax = MOV32rm %rax, 1, _, 0, _'
      - '%eax = INC32r %eax, implicit-def %eflags'
      - 'RETQ %eax'
...
---
# CHECK: name: inc2
name: inc2
body:
  - id: 0
    name: entry
    instructions:
      # CHECK: - '%rax = MOV64rm %rip, 1, _, @0, _'
      - '%rax = MOV64rm %rip, 1, _, @0, _'
      - '%eax = MOV32rm %rax, 1, _, 0, _'
      - '%eax = INC32r %eax, implicit-def %eflags'
      - 'RETQ %eax'
...
---
name:            test
body:
  - id:              0
    name:            entry
    instructions:
      # CHECK: , @".$0",
      # CHECK: , @-_-,
      # CHECK: , @_-_a,
      # CHECK: , @"$.-B",
      - '%rax = MOV64rm %rip, 1, _, @.$0, _'
      - '%eax = MOV32rm killed %rax, 1, _, 0, _'
      - '%rcx = MOV64rm %rip, 1, _, @-_-, _'
      - 'MOV32mr killed %rcx, 1, _, 0, _, killed %eax'
      - '%rax = MOV64rm %rip, 1, _, @_-_a, _'
      - '%eax = MOV32rm killed %rax, 1, _, 0, _'
      - '%rcx = MOV64rm %rip, 1, _, @$.-B, _'
      - 'MOV32mr killed %rcx, 1, _, 0, _, %eax'
      - 'RETQ %eax'
...
---
name:            test2
body:
  - id:              0
    name:            entry
    instructions:
      # CHECK: , @"\01Hello@$%09 \5C World,",
      - '%rax = MOV64rm %rip, 1, _, @"\01Hello@$%09 \\ World,", _'
      - '%eax = MOV32rm killed %rax, 1, _, 0, _'
      - 'RETQ %eax'
...