PR preprocessor/20348

[pf3gnuchains/gcc-fork.git] / gcc / reg-notes.def

diff --git a/gcc/reg-notes.def b/gcc/reg-notes.def
index cb0343f..e196b12 100644 (file)
--- a/gcc/reg-notes.def
+++ b/gcc/reg-notes.def
@@ -1,5 +1,5 @@
 /* Register note definitions.
-   Copyright (C) 2004 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2005 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -15,17 +15,23 @@ for more details.
 
 You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.  */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA.  */
 
 /* This file defines all the codes that may appear on individual
    EXPR_LIST rtxes in the REG_NOTES chain of an insn.  The codes are
    stored in the mode field of the EXPR_LIST.  Source files define
-   DEF_INSN_NOTE appropriately before including this file.  */
+   DEF_REG_NOTE appropriately before including this file.  */
 
 /* Shorthand.  */
 #define REG_NOTE(NAME) DEF_REG_NOTE (REG_##NAME)
 
+/* REG_DEP_TRUE is used in LOG_LINKS to represent a read-after-write
+   dependency (i.e. a true data dependency).  This is here, not
+   grouped with REG_DEP_ANTI and REG_DEP_OUTPUT, because some passes
+   use a literal 0 for it.  */
+REG_NOTE (DEP_TRUE)
+
 /* The value in REG dies in this insn (i.e., it is not needed past
    this insn).  If REG is set in this insn, the REG_DEAD note may,
    but need not, be omitted.  */
@@ -92,9 +98,7 @@ REG_NOTE (CC_USER)
 REG_NOTE (LABEL)
 
 /* REG_DEP_ANTI and REG_DEP_OUTPUT are used in LOG_LINKS to represent
-   write-after-read and write-after-write dependencies respectively.
-   Data dependencies, which are the only type of LOG_LINK created by
-   flow, are represented by a 0 reg note kind.  */
+   write-after-read and write-after-write dependencies respectively.  */
 REG_NOTE (DEP_ANTI)
 REG_NOTE (DEP_OUTPUT)
 
@@ -113,10 +117,6 @@ REG_NOTE (VALUE_PROFILE)
    that the pointer returned cannot alias anything else.  */
 REG_NOTE (NOALIAS)
 
-/* Used to optimize rtl generated by dynamic stack allocations for
-   targets where SETJMP_VIA_SAVE_AREA is true.  */
-REG_NOTE (SAVE_AREA)
-
 /* REG_BR_PRED is attached to JUMP_INSNs and CALL_INSNSs.  It contains
    CONCAT of two integer value.  First specifies the branch predictor
    that added the note, second specifies the predicted hitrate of
@@ -163,6 +163,3 @@ REG_NOTE (CROSSING_JUMP)
 /* This kind of note is generated at each to `setjmp', and similar
    functions that can return twice.  */
 REG_NOTE (SETJMP)
-
-/* Indicate calls that always returns.  */
-REG_NOTE (ALWAYS_RETURN)