re PR middle-end/56524 (Compiler ICE when compiling with -mips16)

gcc/
	PR middle-end/56524
	* tree.h (tree_optimization_option): Rename target_optabs to optabs.
	Add base_optabs.
	(TREE_OPTIMIZATION_OPTABS): Update after previous field change.
	(TREE_OPTIMIZATION_BASE_OPTABS): New macro.
	(save_optabs_if_changed): Replace with...
	(init_tree_optimization_optabs): ...this.
	* optabs.c (save_optabs_if_changed): Rename to...
	(init_tree_optimization_optabs): ...this.  Take the optimization node
	as argument.  Do nothing if the base optabs are already correct.
	Reuse the existing TREE_OPTIMIZATION_OPTABS memory if we need
	to recompute optabs.
	* function.h (function): Remove optabs field.
	* function.c (invoke_set_current_function_hook): Call
	init_tree_optimization_optabs.  Use the result to initialize
	this_fn_optabs.

gcc/c-family/
	PR middle-end/56524
	* c-common.c (handle_optimize_attribute): Don't call
	save_optabs_if_changed.

gcc/testsuite/
	PR middle-end/56524
	* gcc.target/mips/pr56524.c: New test.

From-SVN: r196570

1 files changed, 10 insertions, 5 deletions

diff --git a/gcc/tree.h b/gcc/tree.h
index 740d438..b852f1d 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -3589,21 +3589,26 @@ struct GTY(()) tree_optimization_option {
 
   /* Target optabs for this set of optimization options.  This is of
      type `struct target_optabs *'.  */
-  unsigned char *GTY ((atomic)) target_optabs;
+  unsigned char *GTY ((atomic)) optabs;
+
+  /* The value of this_target_optabs against which the optabs above were
+     generated.  */
+  struct target_optabs *GTY ((skip)) base_optabs;
 };
 
 #define TREE_OPTIMIZATION(NODE) \
   (&OPTIMIZATION_NODE_CHECK (NODE)->optimization.opts)
 
 #define TREE_OPTIMIZATION_OPTABS(NODE) \
-  (OPTIMIZATION_NODE_CHECK (NODE)->optimization.target_optabs)
+  (OPTIMIZATION_NODE_CHECK (NODE)->optimization.optabs)
+
+#define TREE_OPTIMIZATION_BASE_OPTABS(NODE) \
+  (OPTIMIZATION_NODE_CHECK (NODE)->optimization.base_optabs)
 
 /* Return a tree node that encapsulates the current optimization options.  */
 extern tree build_optimization_node (void);
 
-/* Save a new set of target_optabs in a TREE_OPTIMIZATION node if the
-   current set of optabs has changed.  */
-extern void save_optabs_if_changed (tree);
+extern void init_tree_optimization_optabs (tree);
 
 /* Target options used by a function.  */