bolt/test/X86/tail-duplication-cacheline.s

   1 # This reproduces a bug in TailDuplication::isInCacheLine
   2 # with accessing BlockLayout past bounds (unreachable blocks).
   3
   4 # REQUIRES: system-linux
   5
   6 # RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown \
   7 # RUN:   %s -o %t.o
   8 # RUN: link_fdata %s %t.o %t.fdata
   9 # RUN: llvm-strip --strip-unneeded %t.o
  10 # RUN: %clang %cflags -no-pie %t.o -o %t.exe -Wl,-q -nostdlib
  11 # RUN: llvm-bolt %t.exe -o %t.out --data %t.fdata --relocs \
  12 # RUN:   --tail-duplication=aggressive
  13   .globl _start
  14 _start:
  15   jmp   d
  16   je    _start
  17   movl  %esi, %edi
  18 d:
  19   jmpq  *JT0(,%rcx,8)
  20 # FDATA: 1 _start #d# 1 _start #e# 1 3
  21 f:
  22         movl    0, %esi
  23 g:
  24         movl    0, %esi
  25 e:
  26   jmp   f
  27
  28 .rodata
  29 JT0:
  30         .quad   g
  31         .quad   e