text: from __future__ import print_function
  import re
  import sys
  
  from . import common
  
  if sys.version_info[0] > 2:
    class string:
      expandtabs = str.expandtabs
  else:
    import string
  
  # RegEx: this is where the magic happens.
  
  ##### Assembly parser
  
  ASM_FUNCTION_X86_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n(?:\s*\.?Lfunc_begin[^:\n]*:\n)?[^:]*?'
      r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
      r'^\s*(?:[^:\n]+?:\s*\n\s*\.size|\.cfi_endproc|\.globl|\.comm|\.(?:sub)?section|#+ -- End function)',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_ARM_RE = re.compile(
          r'^(?P<func>[0-9a-zA-Z_]+):\n' # f: (name of function)
          r'\s+\.fnstart\n' # .fnstart
          r'(?P<body>.*?)\n' # (body of the function)
          r'.Lfunc_end[0-9]+:', # .Lfunc_end0: or # -- End function
          flags=(re.M | re.S))
  
  ASM_FUNCTION_AARCH64_RE = re.compile(
       r'^_?(?P<func>[^:]+):[ \t]*\/\/[ \t]*@(?P=func)\n'
       r'(?:[ \t]+.cfi_startproc\n)?'  # drop optional cfi noise
       r'(?P<body>.*?)\n'
       # This list is incomplete
       r'.Lfunc_end[0-9]+:\n',
       flags=(re.M | re.S))
  
  ASM_FUNCTION_AMDGPU_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*;+[ \t]*@(?P=func)\n[^:]*?'
      r'(?P<body>.*?)\n' # (body of the function)
      # This list is incomplete
      r'^\s*(\.Lfunc_end[0-9]+:\n|\.section)',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_HEXAGON_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*//[ \t]*@(?P=func)\n[^:]*?'
      r'(?P<body>.*?)\n' # (body of the function)
      # This list is incomplete
      r'.Lfunc_end[0-9]+:\n',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_MIPS_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?' # f: (name of func)
      r'(?:^[ \t]+\.(frame|f?mask|set).*?\n)+'  # Mips+LLVM standard asm prologue
      r'(?P<body>.*?)\n'                        # (body of the function)
      # Mips+LLVM standard asm epilogue
      r'(?:(^[ \t]+\.set[^\n]*?\n)*^[ \t]+\.end.*?\n)'
      r'(\$|\.L)func_end[0-9]+:\n',             # $func_end0: (mips32 - O32) or
                                                # .Lfunc_end0: (mips64 - NewABI)
      flags=(re.M | re.S))
  
  ASM_FUNCTION_MSP430_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*;+[ \t]*@(?P=func)\n[^:]*?'
      r'(?P<body>.*?)\n'
      r'(\$|\.L)func_end[0-9]+:\n',             # $func_end0:
      flags=(re.M | re.S))
  
  ASM_FUNCTION_PPC_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
      r'.*?'
      r'\.Lfunc_begin[0-9]+:\n'
      r'(?:[ \t]+.cfi_startproc\n)?'
      r'(?:\.Lfunc_[gl]ep[0-9]+:\n(?:[ \t]+.*?\n)*)*'
      r'(?P<body>.*?)\n'
      # This list is incomplete
      r'(?:^[ \t]*(?:\.long[ \t]+[^\n]+|\.quad[ \t]+[^\n]+)\n)*'
      r'.Lfunc_end[0-9]+:\n',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_RISCV_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n(?:\s*\.?Lfunc_begin[^:\n]*:\n)?[^:]*?'
      r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
      r'.Lfunc_end[0-9]+:\n',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_LANAI_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*!+[ \t]*@(?P=func)\n'
      r'(?:[ \t]+.cfi_startproc\n)?'  # drop optional cfi noise
      r'(?P<body>.*?)\s*'
      r'.Lfunc_end[0-9]+:\n',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_SPARC_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*!+[ \t]*@(?P=func)\n'
      r'(?P<body>.*?)\s*'
      r'.Lfunc_end[0-9]+:\n',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_SYSTEMZ_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
      r'[ \t]+.cfi_startproc\n'
      r'(?P<body>.*?)\n'
      r'.Lfunc_end[0-9]+:\n',
      flags=(re.M | re.S))
  
  ASM_FUNCTION_AARCH64_DARWIN_RE = re.compile(
       r'^_(?P<func>[^:]+):[ \t]*;[ \t]@(?P=func)\n'
       r'([ \t]*.cfi_startproc\n[\s]*)?'
       r'(?P<body>.*?)'
       r'([ \t]*.cfi_endproc\n[\s]*)?'
       r'^[ \t]*;[ \t]--[ \t]End[ \t]function',
       flags=(re.M | re.S))
  
  ASM_FUNCTION_ARM_DARWIN_RE = re.compile(
       r'^[ \t]*\.globl[ \t]*_(?P<func>[^ \t])[ \t]*@[ \t]--[ \t]Begin[ \t]function[ \t](?P=func)'
       r'(?P<directives>.*?)'
       r'^_(?P=func):\n[ \t]*'
       r'(?P<body>.*?)'
       r'^[ \t]*@[ \t]--[ \t]End[ \t]function',
       flags=(re.M | re.S ))
  
  ASM_FUNCTION_ARM_MACHO_RE = re.compile(
       r'^_(?P<func>[^:]+):[ \t]*\n'
       r'([ \t]*.cfi_startproc\n[ \t]*)?'
       r'(?P<body>.*?)\n'
       r'[ \t]*\.cfi_endproc\n',
       flags=(re.M | re.S))
  
  ASM_FUNCTION_ARM_IOS_RE = re.compile(
       r'^_(?P<func>[^:]+):[ \t]*\n'
       r'^Lfunc_begin(?P<id>[0-9][1-9]*):\n'
       r'(?P<body>.*?)'
       r'^Lfunc_end(?P=id):\n'
       r'^[ \t]*@[ \t]--[ \t]End[ \t]function',
       flags=(re.M | re.S))
  
  ASM_FUNCTION_WASM32_RE = re.compile(
      r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
      r'(?P<body>.*?)\n'
      r'^\s*(\.Lfunc_end[0-9]+:\n|end_function)',
      flags=(re.M | re.S))
  
  SCRUB_X86_SHUFFLES_RE = (
      re.compile(
          r'^(\s*\w+) [^#\n]+#+ ((?:[xyz]mm\d+|mem)( \{%k\d+\}( \{z\})?)? = .*)$',
          flags=re.M))
  
  SCRUB_X86_SHUFFLES_NO_MEM_RE = (
      re.compile(
          r'^(\s*\w+) [^#\n]+#+ ((?:[xyz]mm\d+|mem)( \{%k\d+\}( \{z\})?)? = (?!.*(?:mem)).*)$',
          flags=re.M))
  
  SCRUB_X86_SPILL_RELOAD_RE = (
      re.compile(
          r'-?\d+\(%([er])[sb]p\)(.*(?:Spill|Reload))$',
          flags=re.M))
  SCRUB_X86_SP_RE = re.compile(r'\d+\(%(esp|rsp)\)')
  SCRUB_X86_RIP_RE = re.compile(r'[.\w]+\(%rip\)')
  SCRUB_X86_LCP_RE = re.compile(r'\.LCPI[0-9]+_[0-9]+')
  SCRUB_X86_RET_RE = re.compile(r'ret[l|q]')
  
  def scrub_asm_x86(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
  
    # Detect shuffle asm comments and hide the operands in favor of the comments.
    if getattr(args, 'no_x86_scrub_mem_shuffle', True):
      asm = SCRUB_X86_SHUFFLES_NO_MEM_RE.sub(r'\1 {{.*#+}} \2', asm)
    else:
      asm = SCRUB_X86_SHUFFLES_RE.sub(r'\1 {{.*#+}} \2', asm)
  
    # Detect stack spills and reloads and hide their exact offset and whether
    # they used the stack pointer or frame pointer.
    asm = SCRUB_X86_SPILL_RELOAD_RE.sub(r'{{[-0-9]+}}(%\1{{[sb]}}p)\2', asm)
    # Generically match the stack offset of a memory operand.
    asm = SCRUB_X86_SP_RE.sub(r'{{[0-9]+}}(%\1)', asm)
    if getattr(args, 'x86_scrub_rip', False):
      # Generically match a RIP-relative memory operand.
      asm = SCRUB_X86_RIP_RE.sub(r'{{.*}}(%rip)', asm)
    # Generically match a LCP symbol.
    asm = SCRUB_X86_LCP_RE.sub(r'{{\.LCPI.*}}', asm)
    if getattr(args, 'extra_scrub', False):
      # Avoid generating different checks for 32- and 64-bit because of 'retl' vs 'retq'.
      asm = SCRUB_X86_RET_RE.sub(r'ret{{[l|q]}}', asm)
    # Strip kill operands inserted into the asm.
    asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_amdgpu(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_arm_eabi(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip kill operands inserted into the asm.
    asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_hexagon(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_powerpc(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip unimportant comments, but leave the token '#' in place.
    asm = common.SCRUB_LOOP_COMMENT_RE.sub(r'#', asm)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    # Strip the tailing token '#', except the line only has token '#'.
    asm = common.SCRUB_TAILING_COMMENT_TOKEN_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_mips(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_msp430(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_riscv(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_lanai(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_sparc(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_systemz(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def scrub_asm_wasm32(asm, args):
    # Scrub runs of whitespace out of the assembly, but leave the leading
    # whitespace in place.
    asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
    # Expand the tabs used for indentation.
    asm = string.expandtabs(asm, 2)
    # Strip trailing whitespace.
    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
    return asm
  
  def get_triple_from_march(march):
    triples = {
        'amdgcn': 'amdgcn',
        'r600': 'r600',
        'mips': 'mips',
        'sparc': 'sparc',
        'hexagon': 'hexagon',
    }
    for prefix, triple in triples.items():
      if march.startswith(prefix):
        return triple
    print("Cannot find a triple. Assume 'x86'", file=sys.stderr)
    return 'x86'
  
  def build_function_body_dictionary_for_triple(args, raw_tool_output, triple, prefixes, func_dict):
    target_handlers = {
        'i686': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
        'x86': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
        'i386': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
        'aarch64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE),
        'aarch64-apple-darwin': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
        'hexagon': (scrub_asm_hexagon, ASM_FUNCTION_HEXAGON_RE),
        'r600': (scrub_asm_amdgpu, ASM_FUNCTION_AMDGPU_RE),
        'amdgcn': (scrub_asm_amdgpu, ASM_FUNCTION_AMDGPU_RE),
        'arm': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
        'arm64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE),
        'arm64-apple-ios': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
        'armv7-apple-ios' : (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_IOS_RE),
        'armv7-apple-darwin': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_DARWIN_RE),
        'thumb': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
        'thumb-macho': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_MACHO_RE),
        'thumbv5-macho': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_MACHO_RE),
        'thumbv7-apple-ios' : (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_IOS_RE),
        'mips': (scrub_asm_mips, ASM_FUNCTION_MIPS_RE),
        'msp430': (scrub_asm_msp430, ASM_FUNCTION_MSP430_RE),
        'ppc32': (scrub_asm_powerpc, ASM_FUNCTION_PPC_RE),
        'powerpc': (scrub_asm_powerpc, ASM_FUNCTION_PPC_RE),
        'riscv32': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
        'riscv64': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
        'lanai': (scrub_asm_lanai, ASM_FUNCTION_LANAI_RE),
        'sparc': (scrub_asm_sparc, ASM_FUNCTION_SPARC_RE),
        's390x': (scrub_asm_systemz, ASM_FUNCTION_SYSTEMZ_RE),
        'wasm32': (scrub_asm_wasm32, ASM_FUNCTION_WASM32_RE),
    }
    handler = None
    best_prefix = ''
    for prefix, s in target_handlers.items():
      if triple.startswith(prefix) and len(prefix) > len(best_prefix):
        handler = s
        best_prefix = prefix
  
    if handler is None:
      raise KeyError('Triple %r is not supported' % (triple))
  
    scrubber, function_re = handler
    common.build_function_body_dictionary(
            function_re, scrubber, [args], raw_tool_output, prefixes,
            func_dict, args.verbose, False)
  
  ##### Generator of assembly CHECK lines
  
  def add_asm_checks(output_lines, comment_marker, prefix_list, func_dict, func_name):
    # Label format is based on ASM string.
    check_label_format = '{} %s-LABEL: %s%s:'.format(comment_marker)
    common.add_checks(output_lines, comment_marker, prefix_list, func_dict, func_name, check_label_format, True, False)
  