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Issue #9203: Computed gotos are now enabled by default on supported

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compilers (which are detected by the configure script).  They can still
be disable selectively by specifying --without-computed-gotos.
This commit is contained in:
Antoine Pitrou 2010-08-13 21:15:58 +00:00
parent d835cf1c84
commit 042b128f58
5 changed files with 126 additions and 25 deletions
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21
Python/ceval.c
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@ -840,11 +840,24 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
-fno-crossjumping).
*/
#if defined(USE_COMPUTED_GOTOS) && defined(DYNAMIC_EXECUTION_PROFILE)
#ifdef DYNAMIC_EXECUTION_PROFILE
#undef USE_COMPUTED_GOTOS
#define USE_COMPUTED_GOTOS 0
#endif
#ifdef USE_COMPUTED_GOTOS
#ifdef HAVE_COMPUTED_GOTOS
#ifndef USE_COMPUTED_GOTOS
#define USE_COMPUTED_GOTOS 1
#endif
#else
#if defined(USE_COMPUTED_GOTOS) && USE_COMPUTED_GOTOS
#error "Computed gotos are not supported on this compiler."
#endif
#undef USE_COMPUTED_GOTOS
#define USE_COMPUTED_GOTOS 0
#endif
#if USE_COMPUTED_GOTOS
/* Import the static jump table */
#include "opcode_targets.h"
@ -990,7 +1003,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
*/
#if defined(DYNAMIC_EXECUTION_PROFILE) || defined(USE_COMPUTED_GOTOS)
#if defined(DYNAMIC_EXECUTION_PROFILE) || USE_COMPUTED_GOTOS
#define PREDICT(op) if (0) goto PRED_##op
#define PREDICTED(op) PRED_##op:
#define PREDICTED_WITH_ARG(op) PRED_##op:
@ -2838,7 +2851,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
oparg = oparg<<16 | NEXTARG();
goto dispatch_opcode;
#ifdef USE_COMPUTED_GOTOS
#if USE_COMPUTED_GOTOS
_unknown_opcode:
#endif
default: