gcc/gcc ChangeLog emit-rtl.c real.h real.c bui ...

[sayle@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2003-03-31 14:30:29

Modified files:
	gcc            : ChangeLog emit-rtl.c real.h real.c builtins.c 
	gcc/testsuite  : ChangeLog 
	gcc/testsuite/gcc.dg: builtins-3.c 
Added files:
	gcc/testsuite/gcc.dg: builtins-7.c builtins-8.c 

Log message:
	* emit-rtl.c (dconstm2, dconsthalf): New real constants.
	(init_emit_once): Initialize dconstm2 and dconsthalf here.
	* real.h (dconstm2, dconsthalf): Add prototypes here.
	* real.c (real_sqrt): Use dconsthalf rather than local copy.
	* builtins.c (fold_builtin): When optimizing sqrt(exp(x)) as
	exp(x/2.0) remember to fold the division if possible.
	Fold sin(0.0) as 0.0, cos(0.0) as 1.0, pow(x,1.0) as x,
	pow(x,-1.0) as 1.0/x, pow(x,2.0) as x*x, pow(x,-2.0) as
	1.0/(x*x) and pow(x,0.5) as sqrt(x).
	
	* gcc.dg/builtins-3.c: Add new tests for sin and cos.
	* gcc.dg/builtins-7.c: New test case.
	* gcc.dg/builtins-8.c: New test case.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.17263&r2=1.17264
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/emit-rtl.c.diff?cvsroot=gcc&r1=1.316&r2=1.317
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/real.h.diff?cvsroot=gcc&r1=1.62&r2=1.63
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/real.c.diff?cvsroot=gcc&r1=1.112&r2=1.113
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.183&r2=1.184
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.2558&r2=1.2559
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/builtins-7.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/builtins-8.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/builtins-3.c.diff?cvsroot=gcc&r1=1.2&r2=1.3