gcc/gcc ChangeLog builtins.c testsuite/gcc.c-t ...

[rth@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2001-12-12 16:43:51

Modified files:
	gcc            : ChangeLog builtins.c 
Added files:
	gcc/testsuite/gcc.c-torture/execute: string-opt-14.c 
	                                     string-opt-15.c 

Log message:
	* builtins.c (expand_builtin_memset, expand_builtin_memcpy,
	expand_builtin_strcpy): Additional arguments TARGET and MODE.
	(expand_builtin_bzero, expand_builtin_strcpy,
	expand_builtin_strncpy, expand_builtin_bzero): Pass additional
	TARGET and MODE parameters to the above functions.
	(expand_builtin_memset, expand_builtin_memcpy): Optimize the
	case where the LEN parameter is constant zero.
	(expand_builtin_memcmp): No longer conditional on
	HAVE_cmpstrsi.  Take an additional mode parameter.  Optimize
	the cases where len is either constant zero or one.
	Optimize to call to memcpy, even if the memcpy isn't inlined.
	(expand_builtin_strncpy): Optimize to call memcpy, even if the
	memcpy isn't inlined.
	(expand_builtin_strcmp, expand_builtin_strncmp): Always attempt
	to optimize to a call to memcmp.
	(expand_builtin): expand_builtin_memcmp can always be called,
	and pass the required parameters to expand_builtin_memcmp,
	expand_builtin_memset, expand_builtin_memcpy and
	expand_builtin_strcpy.
	
	* gcc.c-torture/execute/string-opt-14.c: New test case.
	* gcc.c-torture/execute/string-opt-15.c: New test case.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.12284&r2=1.12285
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.132&r2=1.133
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/string-opt-14.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/string-opt-15.c.diff?cvsroot=gcc&r1=NONE&r2=1.1