2009-05-24 Paolo Bonzini <bonzini@gnu.org>

	* tree-ssa-operands.h (push_stmt_changes, pop_stmt_changes,
	discard_stmt_changes): Delete.
	* tree-ssa-operands.c (scb_stack): Delete.
	(init_ssa_operands): Do not initialize it.
	(fini_ssa_operands): Do not free it.
	(push_stmt_changes, pop_stmt_changes, discard_stmt_changes): Delete.

	* tree-cfg.c (replace_uses_by): Replace pop_stmt_changes with 
	update_stmt, remove the others.  Fix comments.
	* tree-dfa.c (optimize_stack_restore): Likewise.
	* tree-ssa-forwprop.c (forward_propagate_addr_expr): Likewise.
	* tree-ssa-loop-ivopts.c (rewrite_use): Likewise.
	* tree-ssa-dce.c (eliminate_unnecessary_stmts): Likewise.
	* tree-ssa-ccp.c (optimize_stack_restore, execute_fold_all_builtins):
	Likewise.
	* tree-ssa-propagate.c (substitute_and_fold): Likewise.
	* tree-ssa-dom.c (propagate_rhs_into_lhs): Likewise.
	(dom_opt_finalize_block): Likewise, adjusting access to stmts_to_rescan.
	(optimize_stmt): Likewise, adjusting access to stmts_to_rescan.
	(stmts_to_rescan): Change item type to gimple.
	(tree_ssa_dominator_optimize): Change type of stmts_to_rescan.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@147831 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 0 insertions, 68 deletions

diff --git a/gcc/tree-ssa-operands.c b/gcc/tree-ssa-operands.c
index 0f8912421a1..4a8aee7c20c 100644
--- a/gcc/tree-ssa-operands.c
+++ b/gcc/tree-ssa-operands.c
@@ -147,12 +147,6 @@ static void get_expr_operands (gimple, tree *, int);
 /* Number of functions with initialized ssa_operands.  */
 static int n_initialized = 0;
 
-/* Stack of statements to change.  Every call to
-   push_stmt_changes pushes the stmt onto the stack.  Calls to
-   pop_stmt_changes pop a stmt off of the stack and compute the set
-   of changes for the popped statement.  */
-static VEC(gimple_p,heap) *scb_stack;
-
 /* Return the DECL_UID of the base variable of T.  */
 
 static inline unsigned
@@ -231,7 +225,6 @@ init_ssa_operands (void)
       build_vuse = NULL_TREE;
       build_vdef = NULL_TREE;
       bitmap_obstack_initialize (&operands_bitmap_obstack);
-      scb_stack = VEC_alloc (gimple_p, heap, 20);
     }
 
   gcc_assert (gimple_ssa_operands (cfun)->operand_memory == NULL);
@@ -257,11 +250,6 @@ fini_ssa_operands (void)
       VEC_free (tree, heap, build_uses);
       build_vdef = NULL_TREE;
       build_vuse = NULL_TREE;
-
-      /* The change buffer stack had better be empty.  */
-      gcc_assert (VEC_length (gimple_p, scb_stack) == 0);
-      VEC_free (gimple_p, heap, scb_stack);
-      scb_stack = NULL;
     }
 
   gimple_ssa_operands (cfun)->free_defs = NULL;
@@ -1329,62 +1317,6 @@ debug_immediate_uses_for (tree var)
 }
 
 
-/* Push *STMT_P on the SCB_STACK.  This function is deprecated, do not
-   introduce new uses of it.  */
-
-void
-push_stmt_changes (gimple *stmt_p)
-{
-  gimple stmt = *stmt_p;
-
-  /* It makes no sense to keep track of PHI nodes.  */
-  if (gimple_code (stmt) == GIMPLE_PHI)
-    return;
-
-  VEC_safe_push (gimple_p, heap, scb_stack, stmt_p);
-}
-
-/* Pop the top stmt from SCB_STACK and act on the differences between
-   what was recorded by push_stmt_changes and the current state of
-   the statement.  This function is deprecated, do not introduce
-   new uses of it.  */
-
-void
-pop_stmt_changes (gimple *stmt_p)
-{
-  gimple *stmt2_p, stmt = *stmt_p;
-
-  /* It makes no sense to keep track of PHI nodes.  */
-  if (gimple_code (stmt) == GIMPLE_PHI)
-    return;
-
-  stmt2_p = VEC_pop (gimple_p, scb_stack);
-  gcc_assert (stmt_p == stmt2_p);
-
-  /* Force an operand re-scan on the statement and mark any newly
-     exposed variables.  This also will mark the virtual operand
-     for renaming if necessary.  */
-  update_stmt (stmt);
-}
-
-/* Discard the topmost stmt from SCB_STACK.  This is useful
-   when the caller realized that it did not actually modified the
-   statement.  It avoids the expensive operand re-scan.
-   This function is deprecated, do not introduce new uses of it.  */
-
-void
-discard_stmt_changes (gimple *stmt_p)
-{
-  gimple *stmt2_p, stmt = *stmt_p;
-  
-  /* It makes no sense to keep track of PHI nodes.  */
-  if (gimple_code (stmt) == GIMPLE_PHI)
-    return;
-
-  stmt2_p = VEC_pop (gimple_p, scb_stack);
-  gcc_assert (stmt_p == stmt2_p);
-}
-
 /* Unlink STMTs virtual definition from the IL by propagating its use.  */
 
 void