diff options
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index ac511f6..ad4d060 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -955,8 +955,9 @@ make_decl_rtl (tree decl) error ("global register variable has initial value"); } if (TREE_THIS_VOLATILE (decl)) - warning (0, "volatile register variables don%'t " - "work as you might wish"); + warning (OPT_Wvolatile_register_var, + "optimization may eliminate reads and/or " + "writes to register variables"); /* If the user specified one of the eliminables registers here, e.g., FRAME_POINTER_REGNUM, we don't want to get this variable |