gengtype.c (write_field_root): Avoid out-of-scope access of newv.

	* gengtype.c (write_field_root): Avoid out-of-scope access of newv.

	* tree-stdarg.c (execute_optimize_stdarg): Accept clobbers.

	* tree.h (TREE_CLOBBER_P): New macro.
	* gimple.h (gimple_clobber_p): New inline function.
	* gimplify.c (gimplify_bind_expr): Add clobbers for all variables
	that go out of scope and live in memory.
	* tree-ssa-operands.c (get_expr_operands): Transfer volatility also
	for constructors.
	* cfgexpand.c (decl_to_stack_part): New static variable.
	(add_stack_var): Allocate it, and remember mapping.
	(fini_vars_expansion): Deallocate it.
	(stack_var_conflict_p): Add early outs.
	(visit_op, visit_conflict, add_scope_conflicts_1,
	add_scope_conflicts): New static functions.
	(expand_used_vars_for_block): Don't call add_stack_var_conflict, tidy.
	(expand_used_vars): Add scope conflicts.
	(expand_gimple_stmt_1): Expand clobbers to nothing.
	(expand_debug_expr): Ditto.

	* tree-pretty-print.c (dump_generic_node): Dump clobbers nicely.
	* tree-ssa-live.c (remove_unused_locals): Remove clobbers that
	refer to otherwise unused locals.
	* tree-sra.c (build_accesses_from_assign): Ignore clobbers.
	* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Clobbers of
	SSA names aren't necessary.
	(propagate_necessity): Accept and ignore constructors on the rhs,
	tidy.
	* gimple.c (walk_gimple_op): Accept constructors like mem_rhs.
	* tree-ssa-structalias.c (find_func_aliases): Clobbers don't store
	any known value.
	* tree-ssa-sccvn.c (vn_reference_lookup_3): Ditto, in particular they
	don't zero-initialize something.
	* tree-ssa-phiopt.c (cond_if_else_store_replacement_1): Ignore
	clobber RHS, we don't want PHI nodes with those.

testsuite/
	* gcc.dg/tree-ssa/20031015-1.c: Adjust.
	* g++.dg/tree-ssa/ehcleanup-1.C: Ditto.
	* g++.dg/eh/builtin1.C: Rewrite to not use local variables.
	* g++.dg/eh/builtin2.C: Ditto.
	* g++.dg/eh/builtin3.C: Ditto.

From-SVN: r181172

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/tree-ssa-operands.c b/gcc/tree-ssa-operands.c
index 9cd656b2a8c..9012bfe26fe 100644
--- a/gcc/tree-ssa-operands.c
+++ b/gcc/tree-ssa-operands.c
@@ -956,6 +956,12 @@ get_expr_operands (gimple stmt, tree *expr_p, int flags)
 	constructor_elt *ce;
 	unsigned HOST_WIDE_INT idx;
 
+	/* A volatile constructor is actually TREE_CLOBBER_P, transfer
+	   the volatility to the statement, don't use TREE_CLOBBER_P for
+	   mirroring the other uses of THIS_VOLATILE in this file.  */
+	if (TREE_THIS_VOLATILE (expr))
+	  gimple_set_has_volatile_ops (stmt, true);
+
 	for (idx = 0;
 	     VEC_iterate (constructor_elt, CONSTRUCTOR_ELTS (expr), idx, ce);
 	     idx++)