[issue4753] Faster opcode dispatch on gcc

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> I get 86 with GCC 4.x and SUNCC. However, with GCC 3.4 I only get a
> single computed goto. Is there some hidden option to make GCC avoid
> sharing jumps? 

Try -fno-crossjumping.

> I tested it and it worked, no test failures to report. Just change the
> macro test: 
> 
> #ifdef __GNUC__ && \
> ...
> 
> to
> 
> #ifdef (__GNUC__ || __SUNPRO_C) && \
> ...

Thanks.

> You forgot to update your script to use the new name.

Ah, that's rather dumb :)

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<http://bugs.python.org/issue4753>
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