[PATCH] Improve MIN_EXPR/MAX_EXPR constant folding

[Eric Botcazou]

> Pre-approved for mainline with those changes, but feel free to post
> a revised version if you can think of further improvements.

Revised version attached, bootstrapped/regtested on x86_64-suse-linux.


2006-01-16  Eric Botcazou  <ebotcazou@adacore.com>
            Roger Sayle  <roger@eyesopen.com> 

	* fold-const.c (fold_minmax): New static function.
	(fold_binary) <MIN_EXPR>: Call it.
	<MAX_EXPR>: Likewise.
	* stor-layout.c (place_field): Use DECL_SIZE consistently
	in the computation of the new record size.


2006-01-16  Eric Botcazou  <ebotcazou@adacore.com>
            Andrew Pinski  <pinskia@physics.uc.edu>

	* gcc.dg/minmax-1.c: New test.


-- 
Eric Botcazou
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