From: Jeffrey A Law <law@cygnus.com>
Date: Sun, 24 Jan 1999 07:13:55 +0000 (+0000)
Subject: rtl.def (CALL_PLACEHOLDER): New rtx code.
X-Git-Tag: prereleases/libgcj-0.1~1189
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=09554da93e20b43c842a342c82062c18606252f1;p=thirdparty%2Fgcc.git

rtl.def (CALL_PLACEHOLDER): New rtx code.

�
        * rtl.def (CALL_PLACEHOLDER): New rtx code.

From-SVN: r24843
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 776dcdb0742a..f06b6c2baed0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+Sun Jan 24 08:07:59 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* rtl.def (CALL_PLACEHOLDER): New rtx code.
+
 Sun Jan 24 21:24:43 1999  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>
 
 	* config/c4x/c4x.c (c4x_emit_move_sequence, c4x_encode_section_info):
diff --git a/gcc/rtl.def b/gcc/rtl.def
index 970a937f8976..7b8c84571f01 100644
--- a/gcc/rtl.def
+++ b/gcc/rtl.def
@@ -855,6 +855,24 @@ DEF_RTL_EXPR(RANGE_LIVE, "range_live", "bi", 'x')
    eliminated by the first CSE pass. */
 DEF_RTL_EXPR(CONSTANT_P_RTX, "constant_p_rtx", "e", 'x')
 
+/* A placeholder for a CALL_INSN which may be turned into a normal call,
+   a sibling (tail) call or tail recursion.
+
+   Immediately after RTL generation, this placeholder will be replaced
+   by the insns to perform the call, sibcall or tail recursion.
+
+   This RTX has 4 operands.  The first three are lists of instructions to
+   perform the call as a normal call, sibling call and tail recursion
+   respectively.  The latter two lists may be NULL, the first may never
+   be NULL.
+
+   The last operand is the tail recursion CODE_LABEL, which may be NULL if no 
+   potential tail recursive calls were found.
+
+   The tail recursion label is needed so that we can clear LABEL_PRESERVE_P
+   after we select a call method.  */
+DEF_RTL_EXPR(CALL_PLACEHOLDER, "call_placeholder", "uuuu", 'x')
+
 /*
 Local variables:
 mode:c