xref: /aosp_15_r20/external/llvm/test/CodeGen/MIR/X86/machine-basic-block-operands.mir (revision 9880d6810fe72a1726cb53787c6711e909410d58)

# RUN: llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o - %s | FileCheck %s
# This test ensures that the MIR parser parses machine basic block operands.

--- |

  define i32 @foo(i32* %p) {
  entry:
    %a = load i32, i32* %p
    %0 = icmp sle i32 %a, 10
    br i1 %0, label %less, label %exit

  less:
    ret i32 0

  exit:
    ret i32 %a
  }

  define i32 @bar(i32* %p) {
  entry:
    %a = load i32, i32* %p
    %b = icmp sle i32 %a, 10
    br i1 %b, label %0, label %1

  ; <label>:0
    ret i32 0

  ; <label>:1
    ret i32 %a
  }

...
---
# CHECK: name: foo
name:            foo
body: |
  ; CHECK: bb.0.entry
  bb.0.entry:
    successors: %bb.1.less, %bb.2.exit

    %eax = MOV32rm %rdi, 1, _, 0, _
    ; CHECK:      CMP32ri8 %eax, 10
    ; CHECK-NEXT: JG_1 %bb.2.exit
    CMP32ri8 %eax, 10, implicit-def %eflags
    JG_1 %bb.2.exit, implicit %eflags
  ; CHECK: bb.1.less:

  bb.1.less:
    %eax = MOV32r0 implicit-def %eflags

  bb.2.exit:
    RETQ %eax
...
---
# CHECK: name: bar
name:            bar
body: |
  ; CHECK: bb.0.entry:
  bb.0.entry:
    successors: %bb.1, %bb.3

    %eax = MOV32rm %rdi, 1, _, 0, _
    ; CHECK:      CMP32ri8 %eax, 10
    ; CHECK-NEXT: JG_1 %bb.2
    CMP32ri8 %eax, 10, implicit-def %eflags
    JG_1 %bb.3, implicit %eflags

  bb.1:
    %eax = MOV32r0 implicit-def %eflags

  bb.3:
    RETQ %eax
...