use tv_t.h instead of tv.h

[libfirm] / ir / adt / hashptr.h

diff --git a/ir/adt/hashptr.h b/ir/adt/hashptr.h
index f61d539..ff325c7 100644 (file)
--- a/ir/adt/hashptr.h
+++ b/ir/adt/hashptr.h
@@ -12,10 +12,36 @@
 #ifndef __HASHPTR_H__
 #define __HASHPTR_H__
 
+#include "firm_config.h"
+
+#define _FIRM_FNV_OFFSET_BASIS 2166136261U
+#define _FIRM_FNV_FNV_PRIME 16777619U
+
+static INLINE unsigned firm_fnv_hash(const unsigned char *data, unsigned bytes)
+{
+       unsigned i;
+       unsigned hash = _FIRM_FNV_OFFSET_BASIS;
+
+       for(i = 0; i < bytes; ++i) {
+               hash *= _FIRM_FNV_FNV_PRIME;
+               hash ^= data[i];
+       }
+
+       return hash;
+}
+
 /**
  * hash a pointer value: Pointer addresses are mostly aligned to 4
  * or 8 bytes. So we remove the lowest 3 bits
  */
-#define HASH_PTR(ptr)    (((char *)ptr - (char *)0) >> 3)
+#define HASH_PTR(ptr)    (((char *) (ptr) - (char *)0) >> 3)
+
+/**
+ * Hash a string.
+ * @param str The string (can be const).
+ * @param len The length of the string.
+ * @return A hash value for the string.
+ */
+#define HASH_STR(str,len) firm_fnv_hash((const unsigned char *) (str), (len))
 
 #endif /* __HASHPTR_H__ */