gcc/

	PR tree-optimization/56064
	* fixed-value.c (fixed_from_double_int): New function.
	* fixed-value.h (fixed_from_double_int): New prototype.
	(const_fixed_from_double_int): New static inline function.
	* fold-const.c (native_interpret_fixed): New static function.
	(native_interpret_expr) <FIXED_POINT_TYPE>: Use it.
	(can_native_interpret_type_p) <FIXED_POINT_TYPE>: Return true.
	(native_encode_fixed): New static function.
	(native_encode_expr) <FIXED_CST>: Use it.
	(native_interpret_int): Move double_int worker code to...
	* double-int.c (double_int::from_buffer): ...this new static method.
	* double-int.h (double_int::from_buffer): Prototype it.

gcc/testsuite/
	PR tree-optimization/56064
	* gcc.dg/fixed-point/view-convert.c: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195574 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 16 insertions, 0 deletions

diff --git a/gcc/fixed-value.h b/gcc/fixed-value.h
index 9951b181d2e..5ffe67ca87a 100644
--- a/gcc/fixed-value.h
+++ b/gcc/fixed-value.h
@@ -49,6 +49,22 @@ extern FIXED_VALUE_TYPE fconst1[MAX_FCONST1];
   const_fixed_from_fixed_value (r, m)
 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.  */
+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.  */
+static inline rtx
+const_fixed_from_double_int (double_int payload,
+                             enum machine_mode mode)
+{
+  return
+    const_fixed_from_fixed_value (fixed_from_double_int (payload, mode),
+                                  mode);
+}
+
 /* Initialize from a decimal or hexadecimal string.  */
 extern void fixed_from_string (FIXED_VALUE_TYPE *, const char *,
 			       enum machine_mode);