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Re: Slowdowns in code generated by GCC>=3.3


On Oct 20, 2004, at 1:30 PM, Zack Weinberg wrote:

Földy Lajos <foldy@rmki.kfki.hu> writes:

and what about adding the real goto (which will be never executed, but
gcc will have "almost real" control flow):

 	__asm__("jmp *%0" : : "a" (pc));
	goto *pc;


Nothing stops GCC from folding that asm into the common-ized jump
block.

Right.
Never try to work around the express constraints given to you by the compiler, it will always win, and you will always lose.
:)

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