+2013-02-08 Georg-Johann Lay <avr@gjlay.de>
+
+ PR tree-optimization/56064
+ * fixed-value.c (fixed_from_double_int): Sign/zero extend payload
+ bits according to mode.
+ * fixed-value.h (fixed_from_double_int)
+ (const_fixed_from_double_int): Adjust comments.
+
2013-02-08 Richard Biener <rguenther@suse.de>
PR lto/56231
/* Construct a CONST_FIXED from a bit payload and machine mode MODE.
- The bits in PAYLOAD are used verbatim. */
+ The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
FIXED_VALUE_TYPE
fixed_from_double_int (double_int payload, enum machine_mode mode)
gcc_assert (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_DOUBLE_INT);
- value.data = payload;
+ if (SIGNED_SCALAR_FIXED_POINT_MODE_P (mode))
+ value.data = payload.sext (1 + GET_MODE_IBIT (mode) + GET_MODE_FBIT (mode));
+ else if (UNSIGNED_SCALAR_FIXED_POINT_MODE_P (mode))
+ value.data = payload.zext (GET_MODE_IBIT (mode) + GET_MODE_FBIT (mode));
+ else
+ gcc_unreachable();
+
value.mode = mode;
return value;
extern rtx const_fixed_from_fixed_value (FIXED_VALUE_TYPE, enum machine_mode);
/* Construct a FIXED_VALUE from a bit payload and machine mode MODE.
- The bits in PAYLOAD are used verbatim. */
+ The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
extern FIXED_VALUE_TYPE fixed_from_double_int (double_int,
enum machine_mode);
/* Return a CONST_FIXED from a bit payload and machine mode MODE.
- The bits in PAYLOAD are used verbatim. */
+ The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
static inline rtx
const_fixed_from_double_int (double_int payload,
enum machine_mode mode)
+2013-02-08 Georg-Johann Lay <avr@gjlay.de>
+
+ PR tree-optimization/56064
+ * gcc.dg/fixed-point/view-convert-2.c: New test.
+
2013-02-08 Michael Matz <matz@suse.de>
PR tree-optimization/52448
--- /dev/null
+/* PR tree-optimization/56064 */
+/* { dg-do run } */
+/* { dg-options "-std=gnu99 -O2" } */
+
+extern void abort (void);
+extern void exit (int);
+
+void test_k (void)
+{
+ _Accum a;
+ __INT32_TYPE__ i = -__INT32_MAX__;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&a, &i, sizeof (a));
+
+ if (a >= 0k)
+ abort();
+}
+
+void test_0k (void)
+{
+ _Accum a;
+ __INT32_TYPE__ i = 0;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&a, &i, sizeof (a));
+
+ if (a != 0k)
+ abort();
+}
+
+
+void test_hr (void)
+{
+ short _Fract a;
+ __INT8_TYPE__ i = -__INT8_MAX__;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&a, &i, sizeof (a));
+
+ if (a >= 0hr)
+ abort();
+}
+
+void test_0hr (void)
+{
+ short _Fract a;
+ __INT8_TYPE__ i = 0;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&a, &i, sizeof (a));
+
+ if (a != 0hr)
+ abort();
+}
+
+
+void test_si (void)
+{
+ _Accum a = __ACCUM_MIN__;
+ __INT32_TYPE__ i;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&i, &a, sizeof (i));
+
+ if (i >= 0)
+ abort();
+}
+
+void test_0si (void)
+{
+ _Accum a = 0;
+ __INT32_TYPE__ i;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&i, &a, sizeof (i));
+
+ if (i != 0)
+ abort();
+}
+
+
+void test_qi (void)
+{
+ short _Fract a = __SFRACT_MIN__;
+ __INT8_TYPE__ i;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&i, &a, sizeof (i));
+
+ if (i >= 0)
+ abort();
+}
+
+void test_0qi (void)
+{
+ short _Fract a = 0hr;
+ __INT8_TYPE__ i;
+
+ if (sizeof (a) != sizeof (i))
+ return;
+
+ __builtin_memcpy (&i, &a, sizeof (i));
+
+ if (i != 0)
+ abort();
+}
+
+
+int main (void)
+{
+ test_hr();
+ test_k();
+ test_qi();
+ test_si();
+
+ test_0hr();
+ test_0k();
+ test_0qi();
+ test_0si();
+
+ exit (0);
+
+ return 0;
+}