1 files changed, 14 insertions, 0 deletions
diff --git a/ir/ir.h b/ir/ir.h
index f453c51..613ef2a 100644
--- a/ir/ir.h
+++ b/ir/ir.h
@@ -1,4 +1,5 @@
 #include "../common.h"
+#include "../type.h"
 
 enum irclass {
    KXXX,
@@ -137,6 +138,19 @@ enum { USERJUMP = 0xFFFF };
 struct use { struct block *blk; ushort u; };
 
 enum { MAXREGS = 64 };
+/** register set **/
+typedef uvlong regset;
+#define rsset(pS, r) (*(pS) |= 1ull << (r))
+#define rsclr(pS, r) (*(pS) &=~ (1ull << (r)))
+#define rstest(S, r) ((S) >> (r) & 1)
+static inline bool
+rsiter(int *i, uvlong rs)
+{
+   uvlong mask = -(1ull << *i);
+   if ((rs & mask) == 0) return 0;
+   *i = lowestsetbit(rs & mask);
+   return 1;
+}
 
 struct function {
    struct arena **arena;