r138835 - in /trunk/gcc: ChangeLog config/i386/...

[hubicka@gcc.gnu.org]

Author: hubicka
Date: Thu Aug  7 07:35:51 2008
New Revision: 138835

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=138835
Log:

	* optabs.c (emit_unop_insn): Break out to ...
	(maybe_emit_unop_insn): ... this one.
	(expand_sfix_optab): Use maybe variant.
	* optabs.h (maybe_emit_unop_insn): Declare.

	* i386.md (mov0 patterns): Enable by default.
	(FP conversion expanders): Disable expansion of code expanding
	sequences when instruction should be optimized for size.
	(single strinop patterns): Enable when optimizing for size.
	(string expanders): Disable expanding of code expanding sequences
	when optimizning instruction for size.
	* i386.c (ix86_expand_vector_move_misalign): Do code size optimization
	per BB basis.
	(ix86_fp_comparison_sahf_cost): Likewise.
	(ix86_expand_branch): Likewise.
	(ix86_expand_ashl_const): Likewise.
	(ix86_split_ashl): Likewise.
	(ix86_expand_strlen): Likewise.
	(ix86_emit_fp_unordered_jump): Likewie.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.md
    trunk/gcc/optabs.c
    trunk/gcc/optabs.h