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Patch: Simplification for i386 STACK_SIZE_MODE definition

Hello,

I suggest the following patch, to simplify the definition STACK_SIZE_MODE 
as Pmode. On any i386 target the stack size mode is equivalent to the 
Pmode.
Therefore the method in explow.c "emit_stack_probe" should use instead of 
word_mode the STACK_SIZE_MODE macro. This patch is also for the new x86_64 
target for mingw, because the word_mode is there still the SImode, 
reasoned by the fact, that a long is still 32-bit.

ChangeLog:

2007-03-30  Kai Tietz  <kai.tietz@onevision.com>

        * gcc/explow.ct: (emit_stack_probe): Replaced "word_mode" by 
STACK_SIZE_MODE.
        * gcc/config/i386/i386.h: Define STACK_SIZE_MODE as Pmode.

Regards,
 i.A. Kai Tietz



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