We set default for some target options in TARGET_OPTION_OPTIMIZATION_TABLE,
but these can be overridden by specifying the corresponding explicit
-mXXX / -mno-XXX options.
When a function bears the attribue
__attribute__ ((optimize("02")))
the target options are set to the default for that optimization level,
which can be different from what was selected for the file as a whole.
As handle_optimize_attribute is right now, it will thus clobber the
target options, and with enable_checking it will then abort.
The attached patch makes it save and restore the target options.
Bootstrapped and regression tested on x86_64-pc-linux-gnu.
c-family/
* handle_optimize_attribute: Save & restore target options too.
diff --git a/gcc/c-family/c-attribs.c b/gcc/c-family/c-attribs.c
index f54388e9939..82d85ef8e01 100644
--- a/gcc/c-family/c-attribs.c
+++ b/gcc/c-family/c-attribs.c
@@ -5333,10 +5333,13 @@ handle_optimize_attribute (tree *node, tree name, tree
args,
else
{
struct cl_optimization cur_opts;
+ struct cl_target_option cur_target_opts;
tree old_opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (*node);
/* Save current options. */
cl_optimization_save (&cur_opts, &global_options, &global_options_set);
+ cl_target_option_save (&cur_target_opts, &global_options,
+ &global_options_set);
/* If we previously had some optimization options, use them as the
default. */
@@ -5359,6 +5362,8 @@ handle_optimize_attribute (tree *node, tree name, tree
args,
/* Restore current options. */
cl_optimization_restore (&global_options, &global_options_set,
&cur_opts);
+ cl_target_option_restore (&global_options, &global_options_set,
+ &cur_target_opts);
if (saved_global_options != NULL)
{
cl_optimization_compare (saved_global_options, &global_options);
