X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=include%2Flibfirm%2Firmode.h;h=7f55e3ce711c4325d5c357b9d4d38ab8ab5c1ded;hb=f7a0dee11313faad6f2ff54edc8eaadabd03e433;hp=3ad6905b076500be7a7ccb47045303261dc2d293;hpb=bbd7f069d53814c921e888ef652c20213ca2500e;p=libfirm

diff --git a/include/libfirm/irmode.h b/include/libfirm/irmode.h
index 3ad6905b0..7f55e3ce7 100644
--- a/include/libfirm/irmode.h
+++ b/include/libfirm/irmode.h
@@ -43,7 +43,7 @@
 /**
  * Predefined mode according to tech report 1999-14.
  */
-typedef enum { /* irm is short for `ir mode' */
+typedef enum ir_modecode { /* irm is short for `ir mode' */
 	irm_BB,                       /**< basic block */
 	irm_X,                        /**< execution */
 	irm_F,                        /**< float(32) */
@@ -70,7 +70,7 @@ typedef enum { /* irm is short for `ir mode' */
 
 /** These values represent the different mode classes of value representations.
  */
-typedef enum {
+typedef enum ir_mode_sort {
 	/* Predefined sorts of modes */
 	irms_auxiliary,         /**< Only for Firm use. Not extensible. (irm_T) */
 	irms_control_flow,      /**< Marks all control flow modes. Not extensible. (irm_BB, irm_X) */
@@ -89,7 +89,7 @@ typedef enum {
 /** These values represent the different arithmetic operations possible with a mode.
     Further arithmetics can be defined, e.g., for @@@ modes.
  */
-typedef enum {
+typedef enum ir_mode_arithmetic {
 	irma_uninitialized = 0,
 	irma_none = 1,              /**< For modes for which no representation is specified.
 	                                 These are modes of sort auxiliary, internal_boolean and character. */
@@ -407,10 +407,26 @@ int mode_is_float_vector (const ir_mode *mode);
 int mode_is_int_vector (const ir_mode *mode);
 /*@}*/
 
-/** Returns true if sm can be converted to lm without loss
-   according to firm definition */
+/**
+ * Returns true if sm can be converted to lm without loss
+ * according to firm definition.
+ *
+ * Note that mode_Iu is NOT smaller than mode_Is here.
+ *
+ * @see values_in_mode()
+ */
 int smaller_mode(const ir_mode *sm, const ir_mode *lm);
 
+/**
+ * Returns true if a value of mode sm can be converted into mode lm
+ * and backwards without loss.
+ *
+ * Note that mode_Iu values CAN be converted in mode_Is and back.
+ *
+ * @see smaller_mode()
+ */
+int values_in_mode(const ir_mode *sm, const ir_mode *lm);
+
 /**
  * Returns a matching unsigned mode for a given integer signed mode.
  * Returns NULL if no matching mode exists.
@@ -468,4 +484,11 @@ ir_mode *get_reference_mode_unsigned_eq(ir_mode *mode);
  */
 void set_reference_mode_unsigned_eq(ir_mode *ref_mode, ir_mode *int_mode);
 
+/**
+ * Returns non-zero if the cast from mode src to mode dst is a
+ * reinterpret cast (ie. only the bit pattern is reinterpreted,
+ * no conversion is done)
+ */
+int is_reinterpret_cast(const ir_mode *src, const ir_mode *dst);
+
 #endif