Turn some lua_State fields into 32 bit pointers.

lua_State now fits into one cache line on x64.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/lj_state.h b/src/lj_state.h
index cd2f216d..d5b9d888 100644
--- a/src/lj_state.h
+++ b/src/lj_state.h
@@ -9,10 +9,10 @@
 #include "lj_obj.h"
 
 #define incr_top(L) \
-  (++L->top >= L->maxstack && (lj_state_growstack1(L), 0))
+  (++L->top >= tvref(L->maxstack) && (lj_state_growstack1(L), 0))
 
-#define savestack(L, p)         ((char *)(p) - (char *)L->stack)
-#define restorestack(L, n)      ((TValue *)((char *)L->stack + (n)))
+#define savestack(L, p)         ((char *)(p) - mref(L->stack, char))
+#define restorestack(L, n)      ((TValue *)(mref(L->stack, char) + (n)))
 
 LJ_FUNC void lj_state_relimitstack(lua_State *L);
 LJ_FUNC void lj_state_shrinkstack(lua_State *L, MSize used);
@@ -21,7 +21,8 @@ LJ_FUNC void LJ_FASTCALL lj_state_growstack1(lua_State *L);
 
 static LJ_AINLINE void lj_state_checkstack(lua_State *L, MSize need)
 {
-  if ((MSize)((char *)L->maxstack-(char *)L->top) <= need*(MSize)sizeof(TValue))
+  if ((MSize)(mref(L->maxstack, char) - (char *)L->top) <=
+      need*(MSize)sizeof(TValue))
     lj_state_growstack(L, need);
 }