PR tree-optimization/16867

	* tree.c (is_global_var): New function.
	(needs_to_live_in_memory): Check for TREE_ADDRESSABLE.
	Call is_global_var.
	* tree.h (DECL_NEEDS_TO_LIVE_IN_MEMORY_INTERNAL): Remove.
	Update all users.
	(is_global_var): Declare.
	* tree-dfa.c (dump_variable): Display global and addressable
	attributes.
	(add_referenced_var): Clarify documentation when marking
	variables call-clobbered.
	* tree-flow-inline.h (is_call_clobbered): Call is_global_var
	instead of needs_to_live_in_memory.
	(mark_call_clobbered): If the variable is a tag, mark it
	DECL_EXTERNAL.
	* tree-gimple.c (is_gimple_reg): Don't check for
	TREE_ADDRESSABLE.
	(is_gimple_non_addressable): Likewise.
	* tree-ssa-alias.c (get_nmt_for): Always check whether the tag
	needs to be marked call-clobbered.
	(setup_pointers_and_addressables): Call is_global_var instead
	of needs_to_live_in_memory.
	* tree-ssa-dce.c (need_to_preserve_store): Remove.
	Update all users with is_global_var.
	(mark_stmt_if_obviously_necessary): Fix processing of aliased
	stores.  Don't check the virtual definitions.  Rather, check
	whether the store is going into global memory.
	(find_obviously_necessary_stmts): Get the symbol from the PHI
	result.
	* tree-ssa-operands.c (get_call_expr_operands): Do not add
	clobbering may-defs if the call does not have side effects.


libjava/ChangeLog

	PR tree-optimization/16867
	* testsuite/libjava.lang/PR16867.java: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@85874 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 1 insertions, 4 deletions

diff --git a/gcc/tree-gimple.c b/gcc/tree-gimple.c
index 413395ae531..e2088935515 100644
--- a/gcc/tree-gimple.c
+++ b/gcc/tree-gimple.c
@@ -441,7 +441,6 @@ is_gimple_reg (tree t)
 	  /* A volatile decl is not acceptable because we can't reuse it as
 	     needed.  We need to copy it into a temp first.  */
 	  && ! TREE_THIS_VOLATILE (t)
-	  && ! TREE_ADDRESSABLE (t)
 	  && ! needs_to_live_in_memory (t));
 }
 
@@ -481,9 +480,7 @@ is_gimple_non_addressable (tree t)
   if (TREE_CODE (t) == SSA_NAME)
     t = SSA_NAME_VAR (t);
 
-  return (is_gimple_variable (t)
-	  && ! TREE_ADDRESSABLE (t)
-	  && ! needs_to_live_in_memory (t));
+  return (is_gimple_variable (t) && ! needs_to_live_in_memory (t));
 }
 
 /* Return true if T is a GIMPLE rvalue, i.e. an identifier or a constant.  */