Jeff pre-approved the plugin version of this (as a new
file unittests/test-bitmap.c):
https://gcc.gnu.org/ml/gcc-patches/2015-10/msg03284.html
with:
> OK if/when prereqs are approved. Minor twiddling if we end up moving it
> elsewhere or standardizing/reducing header files is pre-approved.
This version moves them to bitmap.c and converts them to
functions.
gcc/ChangeLog:
* bitmap.c: Include "selftest.h".
(test_gc_alloc): New function.
(test_set_range): New function.
(test_clear_bit_in_middle): New function.
(test_copying): New function.
(test_bitmap_single_bit_set_p): New function.
(selftest::bitmap_c_tests): New function.
---
gcc/bitmap.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 110 insertions(+)
diff --git a/gcc/bitmap.c b/gcc/bitmap.c
index 0c05512..21149e7 100644
--- a/gcc/bitmap.c
+++ b/gcc/bitmap.c
@@ -21,6 +21,7 @@ along with GCC; see the file COPYING3. If not see
#include "system.h"
#include "coretypes.h"
#include "bitmap.h"
+#include "selftest.h"
/* Memory allocation statistics purpose instance. */
mem_alloc_description<bitmap_usage> bitmap_mem_desc;
@@ -2162,5 +2163,114 @@ debug (const bitmap_head *ptr)
fprintf (stderr, "<nil>\n");
}
+#if CHECKING_P
+
+/* Selftests for bitmaps. */
+
+/* Freshly-created bitmaps ought to be empty. */
+
+static void
+test_gc_alloc ()
+{
+ bitmap b = bitmap_gc_alloc ();
+ ASSERT_TRUE (bitmap_empty_p (b));
+}
+
+/* Verify bitmap_set_range. */
+
+static void
+test_set_range ()
+{
+ bitmap b = bitmap_gc_alloc ();
+ ASSERT_TRUE (bitmap_empty_p (b));
+
+ bitmap_set_range (b, 7, 5);
+ ASSERT_FALSE (bitmap_empty_p (b));
+ ASSERT_EQ (5, bitmap_count_bits (b));
+
+ /* Verify bitmap_bit_p at the boundaries. */
+ ASSERT_FALSE (bitmap_bit_p (b, 6));
+ ASSERT_TRUE (bitmap_bit_p (b, 7));
+ ASSERT_TRUE (bitmap_bit_p (b, 11));
+ ASSERT_FALSE (bitmap_bit_p (b, 12));
+}
+
+/* Verify splitting a range into two pieces using bitmap_clear_bit. */
+
+static void
+test_clear_bit_in_middle ()
+{
+ bitmap b = bitmap_gc_alloc ();
+
+ /* Set b to [100..200]. */
+ bitmap_set_range (b, 100, 100);
+ ASSERT_EQ (100, bitmap_count_bits (b));
+
+ /* Clear a bit in the middle. */
+ bool changed = bitmap_clear_bit (b, 150);
+ ASSERT_TRUE (changed);
+ ASSERT_EQ (99, bitmap_count_bits (b));
+ ASSERT_TRUE (bitmap_bit_p (b, 149));
+ ASSERT_FALSE (bitmap_bit_p (b, 150));
+ ASSERT_TRUE (bitmap_bit_p (b, 151));
+}
+
+/* Verify bitmap_copy. */
+
+static void
+test_copying ()
+{
+ bitmap src = bitmap_gc_alloc ();
+ bitmap_set_range (src, 40, 10);
+
+ bitmap dst = bitmap_gc_alloc ();
+ ASSERT_FALSE (bitmap_equal_p (src, dst));
+ bitmap_copy (dst, src);
+ ASSERT_TRUE (bitmap_equal_p (src, dst));
+
+ /* Verify that we can make them unequal again... */
+ bitmap_set_range (src, 70, 5);
+ ASSERT_FALSE (bitmap_equal_p (src, dst));
+
+ /* ...and that changing src after the copy didn't affect
+ the other: */
+ ASSERT_FALSE (bitmap_bit_p (dst, 70));
+}
+
+/* Verify bitmap_single_bit_set_p. */
+static void
+test_bitmap_single_bit_set_p ()
+{
+ bitmap b = bitmap_gc_alloc ();
+
+ ASSERT_FALSE (bitmap_single_bit_set_p (b));
+
+ bitmap_set_range (b, 42, 1);
+ ASSERT_TRUE (bitmap_single_bit_set_p (b));
+ ASSERT_EQ (42, bitmap_first_set_bit (b));
+
+ bitmap_set_range (b, 1066, 1);
+ ASSERT_FALSE (bitmap_single_bit_set_p (b));
+ ASSERT_EQ (42, bitmap_first_set_bit (b));
+
+ bitmap_clear_range (b, 0, 100);
+ ASSERT_TRUE (bitmap_single_bit_set_p (b));
+ ASSERT_EQ (1066, bitmap_first_set_bit (b));
+}
+
+namespace selftest {
+
+void
+bitmap_c_tests ()
+{
+ test_gc_alloc ();
+ test_set_range ();
+ test_clear_bit_in_middle ();
+ test_copying ();
+ test_bitmap_single_bit_set_p ();
+}
+
+} // namespace selftest
+#endif /* CHECKING_P */
#include "gt-bitmap.h"
--
1.8.5.3
