1 def mangle(op, op_type, signed): 2 # suffixMap gives the C++ name-mangling suffixes for a function that takes two 3 # arguments of the given type. The first entry is for the unsigned version of 4 # the type, and the second entry is for the signed version. 5 suffixMap = { 'i1': ['bb', 'bb'], 6 'i8': ['hh', 'aa'], 7 'i16': ['tt', 'ss'], 8 'i32': ['jj', 'ii'], 9 'i64': ['yy', 'xx'], 10 'float': ['ff', 'ff'], 11 'double': ['dd', 'dd'], 12 '<4 x i32>': ['Dv4_jS_', 'Dv4_iS_'], 13 '<8 x i16>': ['Dv8_tS_', 'Dv8_sS_'], 14 '<16 x i8>': ['Dv16_hS_', 'Dv16_aS_'], 15 '<4 x float>': ['Dv4_fS_', 'Dv4_fS_'], 16 } 17 base = 'test' + op.capitalize() 18 return '_Z' + str(len(base)) + base + suffixMap[op_type][signed] 19 20 def arith(Native, Type, Op): 21 _TEMPLATE_ = """ 22 define internal {{native}} @{{name}}({{native}} %a, {{native}} %b) {{{{ 23 {trunc_a} 24 {trunc_b} 25 %result{{trunc}} = {{op}} {{type}} %a{{trunc}}, %b{{trunc}} 26 {zext} 27 ret {{native}} %result 28 }}}}""" 29 30 Signed = Op in {'sdiv', 'srem', 'ashr'} 31 Name = mangle(Op, Type, Signed) 32 # Most i1 operations are invalid for PNaCl, so map them to i32. 33 if Type == 'i1' and (Op not in {'and', 'or', 'xor'}): 34 Type = 'i32' 35 x = _TEMPLATE_.format( 36 trunc_a = '%a.trunc = trunc {native} %a to {type}' if 37 Native != Type else '', 38 trunc_b = '%b.trunc = trunc {native} %b to {type}' if 39 Native != Type else '', 40 zext = '%result = ' + ('sext' if Signed else 'zext') + 41 ' {type} %result.trunc to {native}' if Native != Type else '') 42 lines = x.format(native=Native, type=Type, op=Op, name=Name, 43 trunc='.trunc' if Native != Type else '') 44 # Strip trailing whitespace from each line to keep git happy. 45 print '\n'.join([line.rstrip() for line in lines.splitlines()]) 46 47 for op in ['add', 'sub', 'mul', 'sdiv', 'udiv', 'srem', 'urem', 'shl', 'lshr', 48 'ashr', 'and', 'or', 'xor']: 49 for op_type in ['i1', 'i8', 'i16', 'i32']: 50 arith('i32', op_type, op) 51 for op_type in ['i64', '<4 x i32>', '<8 x i16>', '<16 x i8>']: 52 arith(op_type, op_type, op) 53 54 for op in ['fadd', 'fsub', 'fmul', 'fdiv', 'frem']: 55 for op_type in ['float', 'double', '<4 x float>']: 56 arith(op_type, op_type, op) 57
