[gcc(refs/users/aoliva/heads/testme)] make -freg-struct-return visibly a negative alias of -fpcc-struct-return

[Alexandre Oliva]

https://gcc.gnu.org/g:9d8a2a67a84deaaf0645a73d17564d68059b2433

commit 9d8a2a67a84deaaf0645a73d17564d68059b2433
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Tue Apr 23 00:33:04 2024 -0300

    make -freg-struct-return visibly a negative alias of -fpcc-struct-return
    
    The fact that both options accept negative forms suggests that maybe
    they aren't negative forms of each other.  They are, but that isn't
    clear even by examining common.opt.  Use NegativeAlias to make it
    abundantly clear.
    
    
    for  gcc/ChangeLog
    
            * common.opt (freg-struct-return): Make it explicitly
            fpcc-struct-return's NegativeAlias.

Diff:
---
 gcc/common.opt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/common.opt b/gcc/common.opt
index ad348844775..f973d767584 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -2596,7 +2596,7 @@ Common Var(flag_record_gcc_switches)
 Record gcc command line switches in the object file.
 
 freg-struct-return
-Common Var(flag_pcc_struct_return,0) Optimization
+Common NegativeAlias Alias(fpcc_struct_return) Optimization
 Return small aggregates in registers.
 
 fregmove