test/MC/X86/compact-unwind.s

   1 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin10.0 %s | llvm-objdump -unwind-info - | FileCheck %s
   2
   3         .section        __TEXT,__text,regular,pure_instructions
   4         .macosx_version_min 10, 10
   5
   6 # Check that we emit compact-unwind info with UNWIND_X86_MODE_STACK_IND encoding
   7
   8 # CHECK: Contents of __compact_unwind section:
   9 # CHECK-NEXT:   Entry at offset 0x0:
  10 # CHECK-NEXT:     start:                0x0 _test0
  11 # CHECK-NEXT:     length:               0x15
  12 # CHECK-NEXT:     compact encoding:     0x03056804
  13         .globl  _test0
  14 _test0:                                  ## @test0
  15         .cfi_startproc
  16 ## %bb.0:                               ## %entry
  17         pushq   %rbp
  18 Ltmp0:
  19         .cfi_def_cfa_offset 16
  20         pushq   %rbx
  21 Ltmp1:
  22         .cfi_def_cfa_offset 24
  23         subq    $14408, %rsp            ## imm = 0x3848
  24 Ltmp2:
  25         .cfi_def_cfa_offset 14432
  26 Ltmp3:
  27         .cfi_offset %rbx, -24
  28 Ltmp4:
  29         .cfi_offset %rbp, -16
  30         xorl    %eax, %eax
  31         addq    $14408, %rsp            ## imm = 0x3848
  32         popq    %rbx
  33         popq    %rbp
  34         retq
  35         .cfi_endproc
  36
  37 # Check that we emit compact-unwind info with UNWIND_X86_MODE_STACK_IMMD encoding
  38
  39 # CHECK:   Entry at offset 0x20:
  40 # CHECK-NEXT:     start:                0x15 _test1
  41 # CHECK-NEXT:     length:               0x15
  42 # CHECK-NEXT:     compact encoding:     0x02360804
  43         .globl  _test1
  44 _test1:                                  ## @test1
  45         .cfi_startproc
  46 ## %bb.0:                               ## %entry
  47         pushq   %rbp
  48 Ltmp10:
  49         .cfi_def_cfa_offset 16
  50         pushq   %rbx
  51 Ltmp11:
  52         .cfi_def_cfa_offset 24
  53         subq    $408, %rsp              ## imm = 0x198
  54 Ltmp12:
  55         .cfi_def_cfa_offset 432
  56 Ltmp13:
  57         .cfi_offset %rbx, -24
  58 Ltmp14:
  59         .cfi_offset %rbp, -16
  60         xorl    %eax, %eax
  61         addq    $408, %rsp              ## imm = 0x198
  62         popq    %rbx
  63         popq    %rbp
  64         retq
  65         .cfi_endproc
  66
  67 # Check that a adjustment through a push %rax is the same as a sub.
  68
  69 # CHECK:   Entry at offset 0x40:
  70 # CHECK-NEXT:     start:                0x2a _testrax
  71 # CHECK-NEXT:     length:               0x5
  72 # CHECK-NEXT:     compact encoding:     0x02020000
  73         .globl  _testrax
  74 _testrax:                               ## @testrax
  75         .cfi_startproc
  76 ## %bb.0:                               ## %entry
  77         pushq   %rax
  78 Ltmp15:
  79         .cfi_def_cfa_offset 16
  80         xorl    %eax, %eax
  81         popq    %rax
  82         retq
  83         .cfi_endproc
  84
  85         .section        __TEXT,__cstring,cstring_literals
  86 L_.str:                                 ## @.str
  87         .asciz  "%d\n"
  88
  89
  90 .subsections_via_symbols