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https://github.com/python/cpython.git
synced 2024-11-26 03:14:27 +08:00
Add "if (x != NULL) continue;" (or similar for err==0) before the
break to most cases, as suggested by Tim Peters. This gives another 8-10% speedup.
This commit is contained in:
Guido van Rossum
parent
04f2b453bb
commit
3dfd53b4c8
@ -649,14 +649,14 @@ eval_code2(co, globals, locals,
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case POP_TOP:
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v = POP();
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DECREF(v);
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break;
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continue;
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case ROT_TWO:
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v = POP();
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w = POP();
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PUSH(v);
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PUSH(w);
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break;
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continue;
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case ROT_THREE:
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v = POP();
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@ -665,19 +665,20 @@ eval_code2(co, globals, locals,
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PUSH(v);
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PUSH(x);
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PUSH(w);
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break;
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continue;
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case DUP_TOP:
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v = TOP();
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INCREF(v);
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PUSH(v);
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break;
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continue;
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case UNARY_POSITIVE:
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v = POP();
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x = pos(v);
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DECREF(v);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case UNARY_NEGATIVE:
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@ -685,6 +686,7 @@ eval_code2(co, globals, locals,
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x = neg(v);
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DECREF(v);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case UNARY_NOT:
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@ -692,6 +694,7 @@ eval_code2(co, globals, locals,
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x = not(v);
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DECREF(v);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case UNARY_CONVERT:
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@ -699,6 +702,7 @@ eval_code2(co, globals, locals,
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x = reprobject(v);
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DECREF(v);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case UNARY_INVERT:
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@ -706,6 +710,7 @@ eval_code2(co, globals, locals,
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x = invert(v);
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DECREF(v);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_POWER:
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@ -715,6 +720,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_MULTIPLY:
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@ -724,6 +730,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_DIVIDE:
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@ -733,6 +740,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_MODULO:
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@ -742,6 +750,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_ADD:
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@ -751,6 +760,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_SUBTRACT:
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@ -760,6 +770,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_SUBSCR:
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@ -769,6 +780,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_LSHIFT:
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@ -778,6 +790,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_RSHIFT:
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@ -787,6 +800,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_AND:
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@ -796,6 +810,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_XOR:
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@ -805,6 +820,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case BINARY_OR:
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@ -814,6 +830,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case SLICE+0:
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@ -834,6 +851,7 @@ eval_code2(co, globals, locals,
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XDECREF(v);
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XDECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case STORE_SLICE+0:
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@ -855,6 +873,7 @@ eval_code2(co, globals, locals,
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DECREF(u);
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XDECREF(v);
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XDECREF(w);
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if (err == 0) continue;
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break;
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case DELETE_SLICE+0:
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@ -875,6 +894,7 @@ eval_code2(co, globals, locals,
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DECREF(u);
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XDECREF(v);
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XDECREF(w);
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if (err == 0) continue;
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break;
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case STORE_SUBSCR:
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@ -886,6 +906,7 @@ eval_code2(co, globals, locals,
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DECREF(u);
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DECREF(v);
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DECREF(w);
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if (err == 0) continue;
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break;
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case DELETE_SUBSCR:
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@ -895,6 +916,7 @@ eval_code2(co, globals, locals,
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err = assign_subscript(v, w, (object *)NULL);
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DECREF(v);
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DECREF(w);
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if (err == 0) continue;
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break;
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case PRINT_EXPR:
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@ -929,6 +951,7 @@ eval_code2(co, globals, locals,
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softspace(w, 0);
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}
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DECREF(v);
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if (err == 0) continue;
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break;
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case PRINT_NEWLINE:
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@ -1294,6 +1317,7 @@ eval_code2(co, globals, locals,
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#endif
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INCREF(x);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case STORE_FAST:
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@ -1307,7 +1331,7 @@ eval_code2(co, globals, locals,
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}
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#endif
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SETLOCAL(oparg, v);
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break;
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continue;
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case DELETE_FAST:
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#ifdef SUPPORT_OBSOLETE_ACCESS
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@ -1325,7 +1349,7 @@ eval_code2(co, globals, locals,
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}
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#endif
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SETLOCAL(oparg, NULL);
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break;
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continue;
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case BUILD_TUPLE:
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x = newtupleobject(oparg);
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@ -1335,6 +1359,7 @@ eval_code2(co, globals, locals,
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SETTUPLEITEM(x, oparg, w);
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}
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PUSH(x);
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continue;
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}
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break;
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@ -1348,12 +1373,14 @@ eval_code2(co, globals, locals,
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break;
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}
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PUSH(x);
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continue;
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}
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break;
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case BUILD_MAP:
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x = newdictobject();
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PUSH(x);
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if (x != NULL) continue;
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break;
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case LOAD_ATTR:
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@ -1362,6 +1389,7 @@ eval_code2(co, globals, locals,
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x = getattro(v, w);
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DECREF(v);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case COMPARE_OP:
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@ -1371,6 +1399,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case IMPORT_NAME:
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@ -1405,6 +1434,7 @@ eval_code2(co, globals, locals,
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x = call_object(x, w);
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DECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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case IMPORT_FROM:
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@ -1417,6 +1447,7 @@ eval_code2(co, globals, locals,
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}
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err = import_from(x, v, w);
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locals_2_fast(f, 0);
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if (err == 0) continue;
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break;
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#ifdef SUPPORT_OBSOLETE_ACCESS
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@ -1433,7 +1464,7 @@ eval_code2(co, globals, locals,
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case JUMP_FORWARD:
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JUMPBY(oparg);
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break;
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continue;
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case JUMP_IF_FALSE:
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err = testbool(TOP());
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@ -1441,7 +1472,9 @@ eval_code2(co, globals, locals,
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err = 0;
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else if (err == 0)
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JUMPBY(oparg);
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break;
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else
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break;
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continue;
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case JUMP_IF_TRUE:
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err = testbool(TOP());
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@ -1449,11 +1482,15 @@ eval_code2(co, globals, locals,
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err = 0;
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JUMPBY(oparg);
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}
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break;
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else if (err == 0)
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;
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else
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break;
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continue;
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case JUMP_ABSOLUTE:
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JUMPTO(oparg);
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break;
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continue;
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case FOR_LOOP:
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/* for v in s: ...
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@ -1470,6 +1507,7 @@ eval_code2(co, globals, locals,
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PUSH(x);
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DECREF(w);
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PUSH(u);
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if (x != NULL) continue;
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}
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else {
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DECREF(v);
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@ -1478,8 +1516,10 @@ eval_code2(co, globals, locals,
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but also an error: */
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if (err_occurred())
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why = WHY_EXCEPTION;
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else
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else {
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JUMPBY(oparg);
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continue;
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}
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}
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break;
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@ -1488,7 +1528,7 @@ eval_code2(co, globals, locals,
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case SETUP_FINALLY:
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setup_block(f, opcode, INSTR_OFFSET() + oparg,
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STACK_LEVEL());
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break;
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continue;
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case SET_LINENO:
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#ifdef LLTRACE
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@ -1496,12 +1536,12 @@ eval_code2(co, globals, locals,
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printf("--- %s:%d \n", filename, oparg);
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#endif
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f->f_lineno = oparg;
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if (f->f_trace != NULL) {
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/* Trace each line of code reached */
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f->f_lasti = INSTR_OFFSET();
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err = call_trace(&f->f_trace, &f->f_trace,
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f, "line", None);
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}
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if (f->f_trace == NULL)
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continue;
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/* Trace each line of code reached */
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f->f_lasti = INSTR_OFFSET();
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err = call_trace(&f->f_trace, &f->f_trace,
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f, "line", None);
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break;
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case CALL_FUNCTION:
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@ -1619,6 +1659,7 @@ eval_code2(co, globals, locals,
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DECREF(w);
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}
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PUSH(x);
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if (x != NULL) continue;
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break;
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}
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@ -1656,6 +1697,7 @@ eval_code2(co, globals, locals,
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DECREF(v);
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XDECREF(w);
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PUSH(x);
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if (x != NULL) continue;
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break;
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