bolt/test/runtime/X86/exceptions-lpstart-zero.s

   1 # RUN: %clangxx %cflags -no-pie %s -o %t.exe -Wl,-q
   2 # RUN: llvm-bolt %t.exe -o %t.exe.bolt
   3 # RUN: %t.exe.bolt
   4
   5 # REQUIRES: system-linux
   6
   7 ## Test that BOLT properly handles LPStart when LPStartEncoding is different
   8 ## from DW_EH_PE_omit.
   9
  10 # The test case compiled with -O1 from:
  11 #
  12 # int main() {
  13 #   try {
  14 #     throw 42;
  15 #   } catch (...) {
  16 #     return 0;
  17 #   }
  18 #   return 1;
  19 # }
  20 #
  21 # The exception table was modified with udata4 LPStartEncoding and sdata4
  22 # CallSiteEncoding.
  23
  24         .text
  25         .globl  main                            # -- Begin function main
  26         .p2align        4, 0x90
  27         .type   main,@function
  28 main:                                   # @main
  29 .Lfunc_begin0:
  30         .cfi_startproc
  31         .cfi_personality 3, __gxx_personality_v0
  32         .cfi_lsda 3, .Lexception0
  33 # %bb.0:
  34         pushq   %rax
  35         .cfi_def_cfa_offset 16
  36         movl    $4, %edi
  37         callq   __cxa_allocate_exception
  38         movl    $42, (%rax)
  39 .Ltmp0:
  40         movl    $_ZTIi, %esi
  41         movq    %rax, %rdi
  42         xorl    %edx, %edx
  43         callq   __cxa_throw
  44 .Ltmp1:
  45 # %bb.1:
  46 .LBB0_2:
  47 .Ltmp2:
  48         movq    %rax, %rdi
  49         callq   __cxa_begin_catch
  50         callq   __cxa_end_catch
  51         xorl    %eax, %eax
  52         popq    %rcx
  53         .cfi_def_cfa_offset 8
  54         retq
  55 .Lfunc_end0:
  56         .size   main, .Lfunc_end0-main
  57         .cfi_endproc
  58         .section        .gcc_except_table,"a",@progbits
  59         .p2align        2
  60 GCC_except_table0:
  61 .Lexception0:
  62         .byte   3                               # @LPStart Encoding = udata4
  63   .long 0
  64         .byte   3                               # @TType Encoding = udata4
  65         .uleb128 .Lttbase0-.Lttbaseref0
  66 .Lttbaseref0:
  67         .byte   11                              # Call site Encoding = sdata4
  68         .uleb128 .Lcst_end0-.Lcst_begin0
  69 .Lcst_begin0:
  70         .long .Lfunc_begin0-.Lfunc_begin0    # >> Call Site 1 <<
  71         .long .Ltmp0-.Lfunc_begin0           #   Call between .Lfunc_begin0 and .Ltmp0
  72         .long   0                               #     has no landing pad
  73         .byte   0                               #   On action: cleanup
  74         .long .Ltmp0-.Lfunc_begin0           # >> Call Site 2 <<
  75         .long .Ltmp1-.Ltmp0                  #   Call between .Ltmp0 and .Ltmp1
  76         .long .Ltmp2                         #     jumps to .Ltmp2
  77         .byte   1                               #   On action: 1
  78         .long .Ltmp1-.Lfunc_begin0           # >> Call Site 3 <<
  79         .long .Lfunc_end0-.Ltmp1             #   Call between .Ltmp1 and .Lfunc_end0
  80         .long   0                               #     has no landing pad
  81         .byte   0                               #   On action: cleanup
  82 .Lcst_end0:
  83         .byte   1                               # >> Action Record 1 <<
  84                                         #   Catch TypeInfo 1
  85         .byte   0                               #   No further actions
  86         .p2align        2
  87                                         # >> Catch TypeInfos <<
  88         .long   0                               # TypeInfo 1
  89 .Lttbase0:
  90         .p2align        2
  91                                         # -- End function