bolt/test/X86/fragmented-symbols.s

   1 # Checks that symbols are allocated in correct sections, and that empty
   2 # fragments are not allocated at all.
   3
   4 # REQUIRES: x86_64-linux
   5
   6 # RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
   7 # RUN: %clangxx %cxxflags %t.o -o %t.exe -Wl,-q -no-pie
   8 # RUN: llvm-bolt %t.exe -o %t.bolt --split-functions --split-strategy=all \
   9 # RUN:         --print-split --print-only=_Z3foov 2>&1 | \
  10 # RUN:     FileCheck %s --check-prefix=CHECK-SPLIT
  11 # RUN: llvm-nm %t.bolt | FileCheck %s --check-prefix=CHECK-COLD0
  12 # RUN: llvm-objdump --syms %t.bolt | \
  13 # RUN:     FileCheck %s --check-prefix=CHECK-SYMS
  14
  15 # CHECK-SPLIT: .LLP0 (4 instructions, align : 1)
  16 # CHECK-SPLIT: -------   HOT-COLD SPLIT POINT   -------
  17 # CHECK-SPLIT-EMPTY:
  18 # CHECK-SPLIT-NEXT: -------   HOT-COLD SPLIT POINT   -------
  19 # CHECK-SPLIT-EMPTY:
  20 # CHECK-SPLIT-NEXT: .LFT0 (2 instructions, align : 1)
  21
  22 # CHECK-COLD0-NOT: _Z3foov.cold.0
  23
  24 # CHECK-SYMS: .text.cold.1
  25 # CHECK-SYMS-SAME: _Z3foov.cold.1
  26 # CHECK-SYMS: .text.cold.2
  27 # CHECK-SYMS-SAME: _Z3foov.cold.2
  28 # CHECK-SYMS: .text.cold.3
  29 # CHECK-SYMS-SAME: _Z3foov.cold.3
  30
  31
  32         .text
  33         .globl  _Z3barv
  34         .type   _Z3barv, @function
  35 _Z3barv:                            # void bar();
  36         .cfi_startproc
  37         ret
  38         .cfi_endproc
  39         .size   _Z3barv, .-_Z3barv
  40
  41
  42         .globl  _Z3bazv
  43         .type   _Z3bazv, @function
  44 _Z3bazv:                            # void baz() noexcept;
  45         .cfi_startproc
  46         ret
  47         .cfi_endproc
  48         .size   _Z3bazv, .-_Z3bazv
  49
  50
  51         .globl  _Z3foov
  52         .type   _Z3foov, @function
  53 _Z3foov:                            # void foo() noexcept;
  54 .LFB1265:                           # _Z3foov
  55         .cfi_startproc
  56         .cfi_personality 0x3,__gxx_personality_v0
  57         .cfi_lsda 0x3,.LLSDA1265
  58         subq    $8, %rsp
  59         .cfi_def_cfa_offset 16
  60 .LEHB0:
  61         call    _Z3barv             # LP: .L5
  62 .LEHE0:
  63         jmp     .L4
  64 .L5:                                # (_Z3foov.cold.0), landing pad, hot
  65         movq    %rax, %rdi
  66         cmpq    $1, %rdx
  67         je      .L3
  68         call    _ZSt9terminatev     # _Z3foov.cold.1
  69 .L3:                                # _Z3foov.cold.2
  70         call    __cxa_begin_catch
  71         call    _Z3bazv
  72         call    __cxa_end_catch
  73 .L4:                                # _Z3foov.cold.3
  74         call    _Z3bazv
  75         addq    $8, %rsp
  76         .cfi_def_cfa_offset 8
  77         ret
  78         .cfi_endproc
  79         .globl  __gxx_personality_v0
  80         .section        .gcc_except_table,"a",@progbits
  81         .align 4
  82 .LLSDA1265:
  83         .byte   0xff
  84         .byte   0x3
  85         .uleb128 .LLSDATT1265-.LLSDATTD1265
  86 .LLSDATTD1265:
  87         .byte   0x1
  88         .uleb128 .LLSDACSE1265-.LLSDACSB1265
  89 .LLSDACSB1265:
  90         .uleb128 .LEHB0-.LFB1265
  91         .uleb128 .LEHE0-.LEHB0
  92         .uleb128 .L5-.LFB1265
  93         .uleb128 0x3
  94 .LLSDACSE1265:
  95         .byte   0
  96         .byte   0
  97         .byte   0x1
  98         .byte   0x7d
  99         .align 4
 100         .long   _ZTISt13runtime_error
 101 .LLSDATT1265:
 102         .text
 103         .size   _Z3foov, .-_Z3foov
 104
 105
 106         .globl  main
 107         .type   main, @function
 108 main:
 109         .cfi_startproc
 110         subq    $8, %rsp
 111         .cfi_def_cfa_offset 16
 112         call    _Z3foov
 113         movl    $0, %eax
 114         addq    $8, %rsp
 115         .cfi_def_cfa_offset 8
 116         ret
 117         .cfi_endproc
 118         .size   main, .-main