gcc/gcc ChangeLog fold-const.c tree.h builtins ...

[sayle@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2003-02-22 04:16:18

Modified files:
	gcc            : ChangeLog fold-const.c tree.h builtins.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: builtins-5.c 

Log message:
	* fold-const.c (omit_one_operand): No longer static.
	* tree.h (omit_one_operand): Prototype here.
	(div_and_round_double): Keep fold-const.c prototypes together.
	* builtins.c (builtin_mathfn_code): Handle binary built-in
	funtions, such as "pow" and "atan2".
	(fold_builtin): Optimize both pow(x,0.0) and pow(1.0,y) to 1.0.
	Simplify optimizations using "type" the builtin's return type.
	
	* gcc.dg/builtins-5.c: New test case.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.16816&r2=1.16817
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&r1=1.237&r2=1.238
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree.h.diff?cvsroot=gcc&r1=1.382&r2=1.383
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.179&r2=1.180
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.2434&r2=1.2435
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/builtins-5.c.diff?cvsroot=gcc&r1=NONE&r2=1.1