[gcc r13-3187] arc: Remove obsolete mRcq and mRcw options.

[Claudiu Zissulescu <claziss@gcc.gnu.org>]

https://gcc.gnu.org/g:59d27853f10fdefa32779d74056fb7d16a6bb965

commit r13-3187-g59d27853f10fdefa32779d74056fb7d16a6bb965
Author: Claudiu Zissulescu <claziss@gmail.com>
Date:   Mon Oct 10 10:27:12 2022 +0300

    arc: Remove obsolete mRcq and mRcw options.
    
    gcc/
    
            * common/config/arc/arc-common.cc (arc_option_optimization_table):
            Remove Rcq and Rcw options.
            * config/arc/arc.opt (mRcq): Ignore option, preserve it for
            backwards compatibility.
            (mRcw): Likewise.
            * doc/invoke.texi (mRcw, mRcq): Update document.
    
    Signed-off-by: Claudiu Zissulescu <claziss@gmail.com>

Diff:
---
 gcc/common/config/arc/arc-common.cc |  2 --
 gcc/config/arc/arc.opt              | 10 ++++++----
 gcc/doc/invoke.texi                 |  8 ++------
 3 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/gcc/common/config/arc/arc-common.cc b/gcc/common/config/arc/arc-common.cc
index e69c4a4fac7..62fe54234e0 100644
--- a/gcc/common/config/arc/arc-common.cc
+++ b/gcc/common/config/arc/arc-common.cc
@@ -44,8 +44,6 @@ arc_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED)
 #define OPT_LEVELS_3_PLUS_SPEED_ONLY OPT_LEVELS_3_PLUS
 static const struct default_options arc_option_optimization_table[] =
   {
-    { OPT_LEVELS_ALL, OPT_mRcq, NULL, 1 },
-    { OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 },
     { OPT_LEVELS_ALL, OPT_msize_level_, NULL, 1 },
     { OPT_LEVELS_ALL, OPT_mearly_cbranchsi, NULL, 1 },
     { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 },
diff --git a/gcc/config/arc/arc.opt b/gcc/config/arc/arc.opt
index 0add5a2a21f..b58273255f7 100644
--- a/gcc/config/arc/arc.opt
+++ b/gcc/config/arc/arc.opt
@@ -308,12 +308,14 @@ Target Ignore
 Does nothing.  Preserved for backward compatibility.
 
 mRcq
-Target Var(TARGET_Rcq)
-Enable Rcq constraint handling - most short code generation depends on this.
+Target Ignore
+Does nothing.  Preserved for backward compatibility.
+
 
 mRcw
-Target Var(TARGET_Rcw)
-Enable Rcw constraint handling - ccfsm condexec mostly depends on this.
+Target Ignore
+Does nothing.  Preserved for backward compatibility.
+
 
 mearly-cbranchsi
 Target Var(TARGET_EARLY_CBRANCHSI)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 1eeaec18810..278c55d5a19 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -20896,15 +20896,11 @@ This is the default for @option{-Os}.
 
 @item -mRcq
 @opindex mRcq
-Enable @samp{Rcq} constraint handling.  
-Most short code generation depends on this.
-This is the default.
+Does nothing.  Preserved for backward compatibility.
 
 @item -mRcw
 @opindex mRcw
-Enable @samp{Rcw} constraint handling.  
-Most ccfsm condexec mostly depends on this.
-This is the default.
+Does nothing.  Preserved for backward compatibility.
 
 @item -msize-level=@var{level}
 @opindex msize-level