asan.c (pass_sanopt::execute): Handle IFN_UBSAN_BOUNDS.

	* asan.c (pass_sanopt::execute): Handle IFN_UBSAN_BOUNDS.
	* flag-types.h (enum sanitize_code): Add SANITIZE_BOUNDS and or it
	into SANITIZE_UNDEFINED.
	* doc/invoke.texi: Describe -fsanitize=bounds.
	* gimplify.c (gimplify_call_expr): Add gimplification of internal
	functions created in the FEs.
	* internal-fn.c: Move "internal-fn.h" after "tree.h".
	(expand_UBSAN_BOUNDS): New function.
	* internal-fn.def (UBSAN_BOUNDS): New internal function.
	* internal-fn.h: Don't define internal functions here.
	* opts.c (common_handle_option): Add -fsanitize=bounds.
	* sanitizer.def (BUILT_IN_UBSAN_HANDLE_OUT_OF_BOUNDS,
	BUILT_IN_UBSAN_HANDLE_OUT_OF_BOUNDS_ABORT): Add.
	* tree-core.h: Define internal functions here.
	(struct tree_base): Add ifn field.
	* tree-pretty-print.c: Include "internal-fn.h".
	(dump_generic_node): Handle functions without CALL_EXPR_FN.
	* tree.c (get_callee_fndecl): Likewise.
	(build_call_expr_internal_loc): New function.
	* tree.def (CALL_EXPR): Update description.
	* tree.h (CALL_EXPR_IFN): Define.
	(build_call_expr_internal_loc): Declare.
	* ubsan.c (get_ubsan_type_info_for_type): Return 0 for non-arithmetic
	types.
	(ubsan_type_descriptor): Change bool parameter to enum
	ubsan_print_style.  Adjust the code.  Add handling of
	UBSAN_PRINT_ARRAY.
	(ubsan_expand_bounds_ifn): New function.
	(ubsan_expand_null_ifn): Adjust ubsan_type_descriptor call.
	(ubsan_build_overflow_builtin): Likewise.
	(instrument_bool_enum_load): Likewise.
	(ubsan_instrument_float_cast): Likewise.
	* ubsan.h (enum ubsan_print_style): New enum.
	(ubsan_expand_bounds_ifn): Declare.
	(ubsan_type_descriptor): Adjust declaration.  Use a default parameter.
c-family/
	* c-gimplify.c: Include "c-ubsan.h" and "pointer-set.h".
	(ubsan_walk_array_refs_r): New function.
	(c_genericize): Instrument array bounds.
	* c-ubsan.c: Include "internal-fn.h".
	(ubsan_instrument_division): Mark instrumented arrays as having
	side effects.  Adjust ubsan_type_descriptor call.
	(ubsan_instrument_shift): Likewise.
	(ubsan_instrument_vla): Adjust ubsan_type_descriptor call.
	(ubsan_instrument_bounds): New function.
	(ubsan_array_ref_instrumented_p): New function.
	(ubsan_maybe_instrument_array_ref): New function.
	* c-ubsan.h (ubsan_instrument_bounds): Declare.
	(ubsan_array_ref_instrumented_p): Declare.
	(ubsan_maybe_instrument_array_ref): Declare.
testsuite/
	* c-c++-common/ubsan/bounds-1.c: New test.
	* c-c++-common/ubsan/bounds-2.c: New test.
	* c-c++-common/ubsan/bounds-3.c: New test.
	* c-c++-common/ubsan/bounds-4.c: New test.
	* c-c++-common/ubsan/bounds-5.c: New test.
	* c-c++-common/ubsan/bounds-6.c: New test.

From-SVN: r211859

1 files changed, 18 insertions, 0 deletions

diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index 3dcb4af..338c5c0 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -2264,6 +2264,24 @@ gimplify_call_expr (tree *expr_p, gimple_seq *pre_p, bool want_value)
   if (! EXPR_HAS_LOCATION (*expr_p))
     SET_EXPR_LOCATION (*expr_p, input_location);
 
+  /* Gimplify internal functions created in the FEs.  */
+  if (CALL_EXPR_FN (*expr_p) == NULL_TREE)
+    {
+      nargs = call_expr_nargs (*expr_p);
+      enum internal_fn ifn = CALL_EXPR_IFN (*expr_p);
+      auto_vec<tree> vargs (nargs);
+
+      for (i = 0; i < nargs; i++)
+	{
+	  gimplify_arg (&CALL_EXPR_ARG (*expr_p, i), pre_p,
+			EXPR_LOCATION (*expr_p));
+	  vargs.quick_push (CALL_EXPR_ARG (*expr_p, i));
+	}
+      gimple call = gimple_build_call_internal_vec (ifn, vargs);
+      gimplify_seq_add_stmt (pre_p, call);
+      return GS_ALL_DONE;
+    }
+
   /* This may be a call to a builtin function.
 
      Builtin function calls may be transformed into different