test/CodeGen/X86/tail-merge-after-mbp.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux -run-pass=block-placement -o - %s | FileCheck %s

---
# check loop bb.7 is not merged with bb.10, bb.13
# check loop bb.9 is not merged with bb.12

name:            foo
body:             |
  ; CHECK-LABEL: name: foo
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; CHECK:   TEST8ri $dl, 1, implicit-def $eflags, implicit killed $edx
  ; CHECK:   JCC_1 %bb.1, 5, implicit $eflags
  ; CHECK: bb.2:
  ; CHECK:   successors: %bb.1(0x30000000), %bb.3(0x50000000)
  ; CHECK:   $rax = MOV64rm $r14, 1, $noreg, 0, $noreg :: (load 8)
  ; CHECK:   TEST64rr $rax, $rax, implicit-def $eflags
  ; CHECK:   JCC_1 %bb.1, 4, implicit $eflags
  ; CHECK: bb.3:
  ; CHECK:   successors: %bb.6(0x30000000), %bb.4(0x50000000)
  ; CHECK:   CMP64mi8 killed $rax, 1, $noreg, 8, $noreg, 0, implicit-def $eflags :: (load 8)
  ; CHECK:   JCC_1 %bb.6, 4, implicit $eflags
  ; CHECK: bb.4:
  ; CHECK:   $ebp = XOR32rr undef $ebp, undef $ebp, implicit-def dead $eflags
  ; CHECK:   dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al
  ; CHECK:   RETQ $eax
  ; CHECK: bb.6:
  ; CHECK:   successors: %bb.1(0x30000000), %bb.7(0x50000000)
  ; CHECK:   $rax = MOV64rm $r14, 1, $noreg, 0, $noreg :: (load 8)
  ; CHECK:   TEST64rr $rax, $rax, implicit-def $eflags
  ; CHECK:   JCC_1 %bb.1, 4, implicit $eflags
  ; CHECK: bb.7 (align 16):
  ; CHECK:   successors: %bb.8(0x71555555), %bb.4(0x0eaaaaab)
  ; CHECK:   CMP64mi8 killed $rax, 1, $noreg, 8, $noreg, 0, implicit-def $eflags :: (load 8), (load 8)
  ; CHECK:   JCC_1 %bb.4, 5, implicit $eflags
  ; CHECK: bb.8:
  ; CHECK:   successors: %bb.1(0x04000000), %bb.7(0x7c000000)
  ; CHECK:   $rax = MOV64rm $r14, 1, $noreg, 0, $noreg :: (load 8)
  ; CHECK:   TEST64rr $rax, $rax, implicit-def $eflags
  ; CHECK:   JCC_1 %bb.7, 5, implicit $eflags
  ; CHECK: bb.1:
  ; CHECK:   $ebp = XOR32rr undef $ebp, undef $ebp, implicit-def dead $eflags
  ; CHECK:   RETQ $eax
  bb.0:
    successors: %bb.1(0x40000000), %bb.7(0x40000000)

    TEST8ri $dl, 1, implicit-def $eflags, implicit killed $edx
    JCC_1 %bb.7, 4, implicit $eflags

  bb.1:
    successors: %bb.16(0x80000000)

    $ebp = XOR32rr undef $ebp, undef $ebp, implicit-def dead $eflags
    JMP_1 %bb.16

  bb.7:
    successors: %bb.8(0x30000000), %bb.9(0x50000000)

    $rax = MOV64rm $r14, 1, $noreg, 0, $noreg :: (load 8)
    TEST64rr $rax, $rax, implicit-def $eflags
    JCC_1 %bb.9, 5, implicit killed $eflags

  bb.8:
    successors: %bb.16(0x80000000)

    $ebp = XOR32rr undef $ebp, undef $ebp, implicit-def dead $eflags
    JMP_1 %bb.16

  bb.9:
    successors: %bb.10(0x30000000), %bb.15(0x50000000)

    CMP64mi8 killed $rax, 1, $noreg, 8, $noreg, 0, implicit-def $eflags :: (load 8)
    JCC_1 %bb.15, 5, implicit $eflags

  bb.10:
    successors: %bb.11(0x30000000), %bb.12(0x50000000)

    $rax = MOV64rm $r14, 1, $noreg, 0, $noreg :: (load 8)
    TEST64rr $rax, $rax, implicit-def $eflags
    JCC_1 %bb.12, 5, implicit $eflags

  bb.11:
    successors: %bb.16(0x80000000)

    $ebp = XOR32rr undef $ebp, undef $ebp, implicit-def dead $eflags
    JMP_1 %bb.16

  bb.12:
    successors: %bb.13(0x71555555), %bb.15(0x0eaaaaab)

    CMP64mi8 killed $rax, 1, $noreg, 8, $noreg, 0, implicit-def $eflags :: (load 8), (load 8)
    JCC_1 %bb.15, 5, implicit $eflags

  bb.13:
    successors: %bb.14(0x04000000), %bb.12(0x7c000000)

    $rax = MOV64rm $r14, 1, $noreg, 0, $noreg :: (load 8)
    TEST64rr $rax, $rax, implicit-def $eflags
    JCC_1 %bb.12, 5, implicit $eflags

  bb.14:
    successors: %bb.16(0x80000000)

    $ebp = XOR32rr undef $ebp, undef $ebp, implicit-def dead $eflags
    JMP_1 %bb.16

  bb.15:
    successors: %bb.16(0x80000000)

    $ebp = XOR32rr undef $ebp, undef $ebp, implicit-def dead $eflags
    dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al

  bb.16:

    RETQ $eax

...