* gcse.c (try_replace_reg): Copy RTX before creating note.

	* df.h (df_ref_flags): New uenum.
	(DF_REF_FLAGS): New macro.
	(struct ref): Add field "flags".
	* df.c (HANDLE_SUBREG): Remove.
	(df_ref_create): Likewise; set flags field of ref.
	(df_def_record_1): Strip down read_write subreg; remove
	commented out code; set READ_WRITE flag.
	(read_modify_subreg_p): New static function.
	(df_uses_record): Cleanup SET handling; set READ_WRITE flag;
	new argument "flags".
	(df_insn_refs_record): Update call of df_uses_record.
	(df_insn_modify): Avoid #if 0 around comment.
	(df_dump): Dump the read/write flag.

	* predict.c (propagate_freq): Make cyclic_probability and frequency
	volatile

	* i386.c (ix86_cc_mode): Accept USE.

	* cfgrtl.c (purge_dead_edges):  Cleanup EDGE_ABNORMAL flag if computed
	jump is turned into simplejump.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@47175 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/df.h b/gcc/df.h
index 89c62883a0a..4d9ea0f30f5 100644
--- a/gcc/df.h
+++ b/gcc/df.h
@@ -48,6 +48,10 @@ struct df_link
   struct ref *ref;
 };
 
+enum df_ref_flags
+  {
+    DF_REF_READ_WRITE = 1
+  };
 
 /* Define a register reference structure.  */
 struct ref
@@ -59,6 +63,7 @@ struct ref
   struct df_link *chain;	/* Head of def-use or use-def chain.  */
   enum df_ref_type type;	/* Type of ref.  */
   int id;			/* Ref index.  */
+  enum df_ref_flags flags;	/* Various flags.  */
 };
 
 
@@ -177,6 +182,7 @@ struct df_map
 #define DF_REF_TYPE(REF) ((REF)->type)
 #define DF_REF_CHAIN(REF) ((REF)->chain)
 #define DF_REF_ID(REF) ((REF)->id)
+#define DF_REF_FLAGS(REF) ((REF)->flags)
 
 /* Macros to determine the reference type.  */