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Issue #4753: By enabling a configure option named '--with-computed-gotos'
on compilers that support it (notably: gcc, SunPro, icc), the bytecode evaluation loop is compiled with a new dispatch mechanism which gives speedups of up to 20%, depending on the system, on various benchmarks.
This commit is contained in:
Antoine Pitrou
parent
e6aad75f2b
commit
b52ec78baf
8 changed files with 7570 additions and 6217 deletions
497
Python/ceval.c
497
Python/ceval.c
File diff suppressed because it is too large
Load diff
43
Python/makeopcodetargets.py
Normal file
43
Python/makeopcodetargets.py
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@ -0,0 +1,43 @@
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#! /usr/bin/env python
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"""Generate C code for the jump table of the threaded code interpreter
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(for compilers supporting computed gotos or "labels-as-values", such as gcc).
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"""
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import imp
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import os
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def find_module(modname):
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"""Finds and returns a module in the local dist/checkout.
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"""
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modpath = os.path.join(
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os.path.dirname(os.path.dirname(__file__)), "Lib")
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return imp.load_module(modname, *imp.find_module(modname, [modpath]))
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def write_contents(f):
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"""Write C code contents to the target file object.
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"""
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opcode = find_module("opcode")
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targets = ['_unknown_opcode'] * 256
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for opname, op in opcode.opmap.items():
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if opname == "STOP_CODE":
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# XXX opcode not implemented
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continue
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targets[op] = "TARGET_%s" % opname
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f.write("static void *opcode_targets[256] = {\n")
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f.write(",\n".join("\t&&%s" % s for s in targets))
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f.write("\n};\n")
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if __name__ == "__main__":
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import sys
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assert len(sys.argv) < 3, "Too many arguments"
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if len(sys.argv) == 2:
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target = sys.argv[1]
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else:
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target = "Python/opcode_targets.h"
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f = open(target, "w")
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try:
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write_contents(f)
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finally:
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f.close()
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258
Python/opcode_targets.h
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258
Python/opcode_targets.h
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@ -0,0 +1,258 @@
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static void *opcode_targets[256] = {
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&&_unknown_opcode,
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&&TARGET_POP_TOP,
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&&TARGET_ROT_TWO,
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&&TARGET_ROT_THREE,
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&&TARGET_DUP_TOP,
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&&TARGET_ROT_FOUR,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_NOP,
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&&TARGET_UNARY_POSITIVE,
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&&TARGET_UNARY_NEGATIVE,
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&&TARGET_UNARY_NOT,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_UNARY_INVERT,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_BINARY_POWER,
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&&TARGET_BINARY_MULTIPLY,
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&&_unknown_opcode,
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&&TARGET_BINARY_MODULO,
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&&TARGET_BINARY_ADD,
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&&TARGET_BINARY_SUBTRACT,
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&&TARGET_BINARY_SUBSCR,
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&&TARGET_BINARY_FLOOR_DIVIDE,
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&&TARGET_BINARY_TRUE_DIVIDE,
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&&TARGET_INPLACE_FLOOR_DIVIDE,
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&&TARGET_INPLACE_TRUE_DIVIDE,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_STORE_MAP,
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&&TARGET_INPLACE_ADD,
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&&TARGET_INPLACE_SUBTRACT,
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&&TARGET_INPLACE_MULTIPLY,
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&&_unknown_opcode,
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&&TARGET_INPLACE_MODULO,
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&&TARGET_STORE_SUBSCR,
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&&TARGET_DELETE_SUBSCR,
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&&TARGET_BINARY_LSHIFT,
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&&TARGET_BINARY_RSHIFT,
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&&TARGET_BINARY_AND,
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&&TARGET_BINARY_XOR,
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&&TARGET_BINARY_OR,
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&&TARGET_INPLACE_POWER,
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&&TARGET_GET_ITER,
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&&TARGET_STORE_LOCALS,
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&&TARGET_PRINT_EXPR,
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&&TARGET_LOAD_BUILD_CLASS,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_INPLACE_LSHIFT,
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&&TARGET_INPLACE_RSHIFT,
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&&TARGET_INPLACE_AND,
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&&TARGET_INPLACE_XOR,
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&&TARGET_INPLACE_OR,
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&&TARGET_BREAK_LOOP,
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&&TARGET_WITH_CLEANUP,
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&&_unknown_opcode,
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&&TARGET_RETURN_VALUE,
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&&TARGET_IMPORT_STAR,
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&&_unknown_opcode,
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&&TARGET_YIELD_VALUE,
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&&TARGET_POP_BLOCK,
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&&TARGET_END_FINALLY,
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&&TARGET_POP_EXCEPT,
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&&TARGET_STORE_NAME,
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&&TARGET_DELETE_NAME,
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&&TARGET_UNPACK_SEQUENCE,
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&&TARGET_FOR_ITER,
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&&TARGET_UNPACK_EX,
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&&TARGET_STORE_ATTR,
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&&TARGET_DELETE_ATTR,
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&&TARGET_STORE_GLOBAL,
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&&TARGET_DELETE_GLOBAL,
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&&TARGET_DUP_TOPX,
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&&TARGET_LOAD_CONST,
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&&TARGET_LOAD_NAME,
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&&TARGET_BUILD_TUPLE,
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&&TARGET_BUILD_LIST,
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&&TARGET_BUILD_SET,
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&&TARGET_BUILD_MAP,
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&&TARGET_LOAD_ATTR,
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&&TARGET_COMPARE_OP,
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&&TARGET_IMPORT_NAME,
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&&TARGET_IMPORT_FROM,
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&&TARGET_JUMP_FORWARD,
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&&TARGET_JUMP_IF_FALSE,
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&&TARGET_JUMP_IF_TRUE,
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&&TARGET_JUMP_ABSOLUTE,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_LOAD_GLOBAL,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_CONTINUE_LOOP,
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&&TARGET_SETUP_LOOP,
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&&TARGET_SETUP_EXCEPT,
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&&TARGET_SETUP_FINALLY,
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&&_unknown_opcode,
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&&TARGET_LOAD_FAST,
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&&TARGET_STORE_FAST,
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&&TARGET_DELETE_FAST,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_RAISE_VARARGS,
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&&TARGET_CALL_FUNCTION,
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&&TARGET_MAKE_FUNCTION,
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&&TARGET_BUILD_SLICE,
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&&TARGET_MAKE_CLOSURE,
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&&TARGET_LOAD_CLOSURE,
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&&TARGET_LOAD_DEREF,
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&&TARGET_STORE_DEREF,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&TARGET_CALL_FUNCTION_VAR,
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&&TARGET_CALL_FUNCTION_KW,
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&&TARGET_CALL_FUNCTION_VAR_KW,
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&&TARGET_EXTENDED_ARG,
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&&_unknown_opcode,
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&&TARGET_LIST_APPEND,
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&&TARGET_SET_ADD,
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&&TARGET_MAP_ADD,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode,
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&&_unknown_opcode
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};
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