Commit d2b522f1 authored by Shengchen Kan's avatar Shengchen Kan
Browse files

[NFC][X86] Simplify test cases for branch align

parent 56aed614

llvm/test/MC/X86/Inputs/align-branch-64-1.s

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Original line number Diff line number Diff line 
  .text

  .globl  foo

  .p2align  4

foo:

  .rept 3

  movl  %eax, %fs:0x1

  .endr

  cmp  %rax, %rbp

  xorl %eax, %eax

  cmp  %rax, %rbp

  je  .L_2

  .rept 3

  movl  %eax, %fs:0x1

  .endr

  xorl %eax, %eax

  je  .L_2

  popq  %rbp

  je  .L_2

  .rept 3

  movl  %eax, %fs:0x1

  .endr

  xorl %eax, %eax

  jmp  .L_3

  jmp  .L_3

  jmp  .L_3

  .rept 2

  movl  %eax, %fs:0x1

  .endr

  movl  %eax, -4(%rbp)

  popq  %rbp

  cmp  %rax, %rbp

  je  .L_2

  jmp  .L_3

.L_2:

  movl  -12(%rbp), %eax

  movl  %eax, -4(%rbp)

.L_3:

  .rept 10

  movl  %esi, -1200(%rbp)

  .endr

  jmp  .L_3

  retq

llvm/test/MC/X86/Inputs/align-branch-64-2.s

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Original line number Diff line number Diff line 
  .text

  .globl  foo

  .p2align  4

foo:

  .rept 3

  movl  %eax, %fs:0x1

  .endr

  .rept 2

  movl  %esi, -12(%rbp)

  .endr

  jmp  *%rax

  .rept 3

  movl  %eax, %fs:0x1

  .endr

  movl  %esi, -12(%rbp)

  pushq  %rbp

  call *%rax

  .rept 3

  movl  %eax, %fs:0x1

  .endr

  pushq  %rbp

  call  foo

  .rept 4

  movl  %eax, %fs:0x1

  .endr

  call  *foo

llvm/test/MC/X86/align-branch-32-1a.s

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Original line number Diff line number Diff line 
# Check NOP padding is disabled before instruction that has variant symbol operand.

# RUN: llvm-mc -filetype=obj -triple i386-unknown-unknown --x86-align-branch-boundary=32 --x86-align-branch=call %s | llvm-objdump -d  - | FileCheck %s



# CHECK: 00000000 <foo>:

# CHECK-COUNT-5:      : 64 a3 01 00 00 00                movl    %eax, %fs:1

# CHECK:            1e: e8 fc ff ff ff                   calll   {{.*}}

# CHECK-COUNT-4:      : 64 a3 01 00 00 00                movl    %eax, %fs:1

# CHECK:            3b: 55                               pushl   %ebp

# CHECK-NEXT:       3c: ff 91 00 00 00 00                calll   *(%ecx)

# CHECK-COUNT-4:      : 64 a3 01 00 00 00                movl    %eax, %fs:1

# CHECK:            5a: c1 e9 02                         shrl    $2, %ecx

# CHECK-NEXT:       5d: 55                               pushl   %ebp

# CHECK-NEXT:       5e: ff 10                            calll   *(%eax)

# CHECK-COUNT-5:      : 64 a3 01 00 00 00                movl    %eax, %fs:1

# CHECK-NEXT:       7e: ff 20                            jmpl    *(%eax)

  .text

  .globl  foo

  .p2align  4

foo:

  .rept 5

  movl  %eax, %fs:0x1

  .endr

  call    ___tls_get_addr@PLT

  .rept 4

  movl  %eax, %fs:0x1

  .endr

  pushl  %ebp

  call *___tls_get_addr@GOT(%ecx)

  .rept 4

  movl  %eax, %fs:0x1

  .endr

  shrl  $2, %ecx

  pushl %ebp

  call *foo@tlscall(%eax)

  .rept 5

  movl  %eax, %fs:0x1

  .endr

  jmp  *foo@tlscall(%eax)

llvm/test/MC/X86/align-branch-32-work.s

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Original line number Diff line number Diff line 
  # RUN: llvm-mc -filetype=obj -triple i386-pc-linux-gnu --x86-align-branch-boundary=32 --x86-align-branch=jmp %s | llvm-objdump -d --no-show-raw-insn - | FileCheck %s



  # Check the branch align mechanism can work in 32-bit mode.



  .text

  .rept 31

  int3

  .endr

  # CHECK:    20:          jmp

  jmp bar





  .type   bar,@function

bar:

  ret

llvm/test/MC/X86/align-branch-64-1a.s

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Original line number Diff line number Diff line 
# Check only fused conditional jumps, conditional jumps and unconditional jumps are aligned with option --x86-align-branch-boundary=32 --x86-align-branch=fused+jcc+jmp

# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown --x86-align-branch-boundary=32 --x86-align-branch=fused+jcc+jmp %p/Inputs/align-branch-64-1.s -o %t1 && llvm-objdump -d %t1 | FileCheck %s



# Check that -x86-branches-within-32B-boundaries matches the above command line

# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown --x86-branches-within-32B-boundaries %p/Inputs/align-branch-64-1.s -o %t2

# RUN: cmp %t1 %t2



# Check no branches is aligned with option --x86-align-branch-boundary=0

# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown --x86-align-branch-boundary=0 --x86-align-branch=fused+jcc+jmp %p/Inputs/align-branch-64-1.s | llvm-objdump -d  - > %t3

# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %p/Inputs/align-branch-64-1.s | llvm-objdump -d  - > %t4

# RUN: cmp %t3 %t4



# CHECK: 0000000000000000 <foo>:

# CHECK-COUNT-3:      : 64 89 04 25 01 00 00 00          movl    %eax, %fs:1

# CHECK:            18: 48 39 c5                         cmpq    %rax, %rbp

# CHECK-NEXT:       1b: 31 c0                            xorl    %eax, %eax

# CHECK-COUNT-3:      : 90                               nop

# CHECK:            20: 48 39 c5                         cmpq    %rax, %rbp

# CHECK-NEXT:       23: 74 5d                            je      {{.*}}

# CHECK-COUNT-3:      : 64 89 04 25 01 00 00 00          movl    %eax, %fs:1

# CHECK:            3d: 31 c0                            xorl    %eax, %eax

# CHECK-NEXT:       3f: 90                               nop

# CHECK-NEXT:       40: 74 40                            je      {{.*}}

# CHECK-NEXT:       42: 5d                               popq    %rbp

# CHECK-NEXT:       43: 74 3d                            je      {{.*}}

# CHECK-COUNT-3:      : 64 89 04 25 01 00 00 00          movl    %eax, %fs:1

# CHECK:            5d: 31 c0                            xorl    %eax, %eax

# CHECK-NEXT:       5f: 90                               nop

# CHECK-NEXT:       60: eb 26                            jmp     {{.*}}

# CHECK-NEXT:       62: eb 24                            jmp     {{.*}}

# CHECK-NEXT:       64: eb 22                            jmp     {{.*}}

# CHECK-COUNT-2:      : 64 89 04 25 01 00 00 00          movl    %eax, %fs:1

# CHECK:            76: 89 45 fc                         movl    %eax, -4(%rbp)

# CHECK-NEXT:       79: 5d                               popq    %rbp

# CHECK-NEXT:       7a: 48 39 c5                         cmpq    %rax, %rbp

# CHECK-NEXT:       7d: 74 03                            je      {{.*}}

# CHECK-NEXT:       7f: 90                               nop

# CHECK-NEXT:       80: eb 06                            jmp     {{.*}}

# CHECK-NEXT:       82: 8b 45 f4                         movl    -12(%rbp), %eax

# CHECK-NEXT:       85: 89 45 fc                         movl    %eax, -4(%rbp)

# CHECK-COUNT-10:     : 89 b5 50 fb ff ff                movl    %esi, -1200(%rbp)

# CHECK:            c4: eb c2                            jmp     {{.*}}

# CHECK-NEXT:       c6: c3                               retq