[committed] d: Save target node before parsing optimize options in case it changes.

[Iain Buclaw via Gcc-patches]

Hi,

This patch saves target node information before calling
parse_optimize_options in the D "optimize" attribute handler, the same
as is done for C/C++ optimize.

Fixes an ICE seen on PowerPC targets with the attr_optimize*.d tests in
the gdc.dg testsuite.

Bootstrapped and regression tested, and committed to mainline.

Regards
Iain.

---
gcc/d/ChangeLog:

        * d-attribs.cc (d_handle_optimize_attribute): Save target node before
        calling parse_optimize_options in case it changes.
---
 gcc/d/d-attribs.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gcc/d/d-attribs.cc b/gcc/d/d-attribs.cc
index 070866020a2..d81b7d122f7 100644
--- a/gcc/d/d-attribs.cc
+++ b/gcc/d/d-attribs.cc
@@ -896,6 +896,8 @@ d_handle_optimize_attribute (tree *node, tree name, tree 
args, int,
 
       /* Save current options.  */
       cl_optimization_save (&cur_opts, &global_options, &global_options_set);
+      tree prev_target_node = build_target_option_node (&global_options,
+                                                       &global_options_set);
 
       /* If we previously had some optimization options, use them as the
         default.  */
@@ -914,10 +916,16 @@ d_handle_optimize_attribute (tree *node, tree name, tree 
args, int,
       parse_optimize_options (args);
       DECL_FUNCTION_SPECIFIC_OPTIMIZATION (*node)
        = build_optimization_node (&global_options, &global_options_set);
+      tree target_node = build_target_option_node (&global_options,
+                                                  &global_options_set);
+      if (prev_target_node != target_node)
+       DECL_FUNCTION_SPECIFIC_TARGET (*node) = target_node;
 
       /* Restore current options.  */
       cl_optimization_restore (&global_options, &global_options_set,
                               &cur_opts);
+      cl_target_option_restore (&global_options, &global_options_set,
+                               TREE_TARGET_OPTION (prev_target_node));
       if (saved_global_options != NULL)
        {
          cl_optimization_compare (saved_global_options, &global_options);
-- 
2.30.2