Selftest framework

gcc/ChangeLog:
	* Makefile.in (OBJS): Add function-tests.o,
	hash-map-tests.o, hash-set-tests.o, rtl-tests.o,
	selftest-run-tests.o.
	(OBJS-libcommon): Add selftest.o.
	(OBJS-libcommon-target): Add selftest.o.
	(all.internal): Add "selftest".
	(all.cross): Likewise.
	(selftest): New phony target.
	(s-selftest): New target.
	(selftest-gdb): New phony target.
	(COLLECT2_OBJS): Add selftest.o.
	* bitmap.c: Include "selftest.h".
	(selftest::test_gc_alloc): New function.
	(selftest::test_set_range): New function.
	(selftest::test_clear_bit_in_middle): New function.
	(selftest::test_copying): New function.
	(selftest::test_bitmap_single_bit_set_p): New function.
	(selftest::bitmap_c_tests): New function.
	* common.opt (fself-test): New.
	* diagnostic-show-locus.c: Include "selftest.h".
	(make_range): New function.
	(test_range_contains_point_for_single_point): New function.
	(test_range_contains_point_for_single_line): New function.
	(test_range_contains_point_for_multiple_lines): New function.
	(assert_eq): New function.
	(test_get_line_width_without_trailing_whitespace): New function.
	(selftest::diagnostic_show_locus_c_tests): New function.
	* et-forest.c: Include "selftest.h".
	(selftest::test_single_node): New function.
	(selftest::test_simple_tree): New function.
	(selftest::test_disconnected_nodes): New function.
	(selftest::et_forest_c_tests): New function.
	* fold-const.c: Include "selftest.h".
	(selftest::assert_binop_folds_to_const): New function.
	(selftest::assert_binop_folds_to_nonlvalue): New function.
	(selftest::test_arithmetic_folding): New function.
	(selftest::fold_const_c_tests): New function.
	* function-tests.c: New file.
	* gimple.c: Include "selftest.h".
	Include "gimple-pretty-print.h".
	(selftest::verify_gimple_pp): New function.
	(selftest::test_assign_single): New function.
	(selftest::test_assign_binop): New function.
	(selftest::test_nop_stmt): New function.
	(selftest::test_return_stmt): New function.
	(selftest::test_return_without_value): New function.
	(selftest::gimple_c_tests): New function.
	* hash-map-tests.c: New file.
	* hash-set-tests.c: New file.
	* input.c: Include "selftest.h".
	(selftest::assert_loceq): New function.
	(selftest::test_accessing_ordinary_linemaps): New function.
	(selftest::test_unknown_location): New function.
	(selftest::test_builtins): New function.
	(selftest::test_reading_source_line): New function.
	(selftest::input_c_tests): New function.
	* rtl-tests.c: New file.
	* selftest-run-tests.c: New file.
	* selftest.c: New file.
	* selftest.h: New file.
	* spellcheck.c: Include "selftest.h".
	(selftest::levenshtein_distance_unit_test_oneway): New function,
	adapted from testsuite/gcc.dg/plugin/levenshtein_plugin.c.
	(selftest::levenshtein_distance_unit_test): Likewise.
	(selftest::spellcheck_c_tests): Likewise.
	* toplev.c: Include selftest.h.
	(toplev::run_self_tests): New.
	(toplev::main): Handle -fself-test.
	* toplev.h (toplev::run_self_tests): New.
	* tree.c: Include "selftest.h".
	(selftest::test_integer_constants): New function.
	(selftest::test_identifiers): New function.
	(selftest::test_labels): New function.
	(selftest::tree_c_tests): New function.
	* tree-cfg.c: Include "selftest.h".
	(selftest::push_fndecl): New function.
	(selftest::test_linear_chain): New function.
	(selftest::test_diamond): New function.
	(selftest::test_fully_connected): New function.
	(selftest::tree_cfg_c_tests): New function.
	* vec.c: Include "selftest.h".
	(selftest::safe_push_range): New function.
	(selftest::test_quick_push): New function.
	(selftest::test_safe_push): New function.
	(selftest::test_truncate): New function.
	(selftest::test_safe_grow_cleared): New function.
	(selftest::test_pop): New function.
	(selftest::test_safe_insert): New function.
	(selftest::test_ordered_remove): New function.
	(selftest::test_unordered_remove): New function.
	(selftest::test_block_remove): New function.
	(selftest::reverse_cmp): New function.
	(selftest::test_qsort): New function.
	(selftest::vec_c_tests): New function.c.
	* wide-int.cc: Include selftest.h and wide-int-print.h.
	(selftest::from_int <wide_int>): New function.
	(selftest::from_int <offset_int>): New function.
	(selftest::from_int <widest_int>): New function.
	(selftest::assert_deceq): New function.
	(selftest::assert_hexeq): New function.
	(selftest::test_printing <VALUE_TYPE>): New function template.
	(selftest::test_ops <VALUE_TYPE>): New function template.
	(selftest::test_comparisons <VALUE_TYPE>): New function template.
	(selftest::run_all_wide_int_tests <VALUE_TYPE>): New function
	template.
	(selftest::wide_int_cc_tests): New function.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/levenshtein-test-1.c: Delete.
	* gcc.dg/plugin/levenshtein_plugin.c: Delete.
	* gcc.dg/plugin/plugin.exp (plugin_test_list): Remove the
	above.

From-SVN: r237144

1 files changed, 80 insertions, 0 deletions

diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 5058746..0efa9d5 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -76,6 +76,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "case-cfn-macros.h"
 #include "stringpool.h"
 #include "tree-ssanames.h"
+#include "selftest.h"
 
 #ifndef LOAD_EXTEND_OP
 #define LOAD_EXTEND_OP(M) UNKNOWN
@@ -14496,3 +14497,82 @@ c_getstr (tree src)
 
   return TREE_STRING_POINTER (src) + tree_to_uhwi (offset_node);
 }
+
+#if CHECKING_P
+
+namespace selftest {
+
+/* Helper functions for writing tests of folding trees.  */
+
+/* Verify that the binary op (LHS CODE RHS) folds to CONSTANT.  */
+
+static void
+assert_binop_folds_to_const (tree lhs, enum tree_code code, tree rhs,
+			     tree constant)
+{
+  ASSERT_EQ (constant, fold_build2 (code, TREE_TYPE (lhs), lhs, rhs));
+}
+
+/* Verify that the binary op (LHS CODE RHS) folds to an NON_LVALUE_EXPR
+   wrapping WRAPPED_EXPR.  */
+
+static void
+assert_binop_folds_to_nonlvalue (tree lhs, enum tree_code code, tree rhs,
+				 tree wrapped_expr)
+{
+  tree result = fold_build2 (code, TREE_TYPE (lhs), lhs, rhs);
+  ASSERT_NE (wrapped_expr, result);
+  ASSERT_EQ (NON_LVALUE_EXPR, TREE_CODE (result));
+  ASSERT_EQ (wrapped_expr, TREE_OPERAND (result, 0));
+}
+
+/* Verify that various arithmetic binary operations are folded
+   correctly.  */
+
+static void
+test_arithmetic_folding ()
+{
+  tree type = integer_type_node;
+  tree x = create_tmp_var_raw (type, "x");
+  tree zero = build_zero_cst (type);
+  tree one = build_int_cst (type, 1);
+
+  /* Addition.  */
+  /* 1 <-- (0 + 1) */
+  assert_binop_folds_to_const (zero, PLUS_EXPR, one,
+			       one);
+  assert_binop_folds_to_const (one, PLUS_EXPR, zero,
+			       one);
+
+  /* (nonlvalue)x <-- (x + 0) */
+  assert_binop_folds_to_nonlvalue (x, PLUS_EXPR, zero,
+				   x);
+
+  /* Subtraction.  */
+  /* 0 <-- (x - x) */
+  assert_binop_folds_to_const (x, MINUS_EXPR, x,
+			       zero);
+  assert_binop_folds_to_nonlvalue (x, MINUS_EXPR, zero,
+				   x);
+
+  /* Multiplication.  */
+  /* 0 <-- (x * 0) */
+  assert_binop_folds_to_const (x, MULT_EXPR, zero,
+			       zero);
+
+  /* (nonlvalue)x <-- (x * 1) */
+  assert_binop_folds_to_nonlvalue (x, MULT_EXPR, one,
+				   x);
+}
+
+/* Run all of the selftests within this file.  */
+
+void
+fold_const_c_tests ()
+{
+  test_arithmetic_folding ();
+}
+
+} // namespace selftest
+
+#endif /* CHECKING_P */