Mark some unused/undocumented options as "Ignore" [PR122243]

gcc/c-family/ChangeLog
	PR other/122243
	* c.opt (Wsynth): Mark as "Ignore".

gcc/ChangeLog
	PR other/122243
	* common.opt (ftree-lrs): Mark as "Ignore".

diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index 85dc3d8200422ea383949041fdc8265294d49b88..66099c7f397a0ae8be5b3c58d35d030fde668187 100644 (file)
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -1503,8 +1503,8 @@ C ObjC C++ ObjC++ Var(warn_sync_nand) Init(1) Warning
 Warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used.
 
 Wsynth
-C++ ObjC++ Var(warn_synth) Warning
-Deprecated.  This switch has no effect.
+C++ ObjC++ Warning Ignore
+Does nothing. Preserved for backward compatibility.
 
 Wsystem-headers
 C ObjC C++ ObjC++ Warning

diff --git a/gcc/common.opt b/gcc/common.opt
index 92b0d4d931bdcb3654f1265d392e0c5265adf402..2ccfb44eac0b326b56a80219d281127cd52314c0 100644 (file)
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -3345,8 +3345,8 @@ Common Var(flag_tree_ter) Optimization
 Replace temporary expressions in the SSA->normal pass.
 
 ftree-lrs
-Common Var(flag_tree_live_range_split) Optimization
-Perform live range splitting during the SSA->normal pass.
+Common Ignore
+Does nothing.  Preserved for backward compatibility.
 
 ftree-vrp
 Common Var(flag_tree_vrp) Init(0) Optimization