2013-11-04 Wei Mi <wmi@google.com>

	* gcc/config/i386/i386.c (memory_address_length): Extract a part
	of code to rip_relative_addr_p.
	(rip_relative_addr_p): New Function.
	(ix86_macro_fusion_p): Ditto.
	(ix86_macro_fusion_pair_p): Ditto.
	* gcc/config/i386/i386.h: Add new tune features about macro-fusion.
	* gcc/config/i386/x86-tune.def (DEF_TUNE): Ditto.
	* gcc/doc/tm.texi: Generated.
	* gcc/doc/tm.texi.in: Ditto.
	* gcc/haifa-sched.c (try_group_insn): New Function.
	(group_insns_for_macro_fusion): Ditto.
	(sched_init): Call group_insns_for_macro_fusion.
	* gcc/target.def: Add two hooks: macro_fusion_p and
	macro_fusion_pair_p.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204369 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index fc5e1a544b3..f5e8d2cdcec 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -6574,6 +6574,17 @@ scheduling one insn causes other insns to become ready in the same
 cycle.  These other insns can then be taken into account properly.
 @end deftypefn
 
+@deftypefn {Target Hook} bool TARGET_SCHED_MACRO_FUSION_P (void)
+This hook is used to check whether target platform supports macro fusion.
+@end deftypefn
+
+@deftypefn {Target Hook} bool TARGET_SCHED_MACRO_FUSION_PAIR_P (rtx @var{condgen}, rtx @var{condjmp})
+This hook is used to check whether two insns could be macro fused for
+target microarchitecture. If this hook returns true for the given insn pair
+(@var{condgen} and @var{condjmp}), scheduler will put them into a sched
+group, and they will not be scheduled apart.
+@end deftypefn
+
 @deftypefn {Target Hook} void TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK (rtx @var{head}, rtx @var{tail})
 This hook is called after evaluation forward dependencies of insns in
 chain given by two parameter values (@var{head} and @var{tail}