[PATCH, Pointer Bounds Checker 24/x] PRE

[Ilya Enkovich]

Hi,

This patch preserves CALL_WITH_BOUNDS flag for calls during PRE.

Bootstrapped and tested on linux-x86_64.

Thanks,
Ilya
--
gcc/

2014-06-03  Ilya Enkovich  <ilya.enkov...@intel.com>

        * tree-ssa-pre.c (create_component_ref_by_pieces_1): Store
        CALL_WITH_BOUNDS_P for calls.
        (copy_reference_ops_from_call): Restore CALL_WITH_BOUNDS_P
        flag.


diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c
index 1e55356..d5b9f3b 100644
--- a/gcc/tree-ssa-pre.c
+++ b/gcc/tree-ssa-pre.c
@@ -2579,6 +2579,8 @@ create_component_ref_by_pieces_1 (basic_block block, 
vn_reference_t ref,
                                   (TREE_CODE (fn) == FUNCTION_DECL
                                    ? build_fold_addr_expr (fn) : fn),
                                   nargs, args);
+       if (currop->op2 == integer_one_node)
+         CALL_WITH_BOUNDS_P (folded) = true;
        free (args);
        if (sc)
          CALL_EXPR_STATIC_CHAIN (folded) = sc;
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
index f7ec8b6..e83d9dc 100644
--- a/gcc/tree-ssa-sccvn.c
+++ b/gcc/tree-ssa-sccvn.c
@@ -1124,6 +1124,8 @@ copy_reference_ops_from_call (gimple call,
   temp.opcode = CALL_EXPR;
   temp.op0 = gimple_call_fn (call);
   temp.op1 = gimple_call_chain (call);
+  if (gimple_call_with_bounds_p (call))
+    temp.op2 = integer_one_node;
   temp.off = -1;
   result->safe_push (temp);