Major 32/64 bit cleanups in assembler and exit handling.

Add 64 bit lightuserdata handling. Keep the tagged 64 bit value.
Allocate/save/restore 64 bit spill slots for 64 bit lightuserdata.
Fix code generation for 64 bit loads/stores/moves/compares.
Fix code generation for stack pointer adjustments.
Add fixed spill slot definitions for x64. Reduce reserved spill slots.
Disable STRREF + ADD fusion in 64 bit mode (avoid negative 32 bit ofs).

1 files changed, 15 insertions, 3 deletions

diff --git a/src/lj_ir.h b/src/lj_ir.h
index 75519ed4..ca871238 100644
--- a/src/lj_ir.h
+++ b/src/lj_ir.h
@@ -362,6 +362,7 @@ typedef struct IRType1 { uint8_t irt; } IRType1;
 
 #define irt_isnil(t)            (irt_type(t) == IRT_NIL)
 #define irt_ispri(t)            ((uint32_t)irt_type(t) <= IRT_TRUE)
+#define irt_islightud(t)        (irt_type(t) == IRT_LIGHTUD)
 #define irt_isstr(t)            (irt_type(t) == IRT_STR)
 #define irt_isfunc(t)           (irt_type(t) == IRT_FUNC)
 #define irt_istab(t)            (irt_type(t) == IRT_TAB)
@@ -376,9 +377,20 @@ typedef struct IRType1 { uint8_t irt; } IRType1;
 #define irt_isgcv(t)            (irt_typerange((t), IRT_STR, IRT_UDATA))
 #define irt_isaddr(t)           (irt_typerange((t), IRT_LIGHTUD, IRT_UDATA))
 
-#define itype2irt(tv) \
-  (~uitype(tv) < IRT_NUM ? cast(IRType, ~uitype(tv)) : IRT_NUM)
-#define irt_toitype(t)          ((int32_t)~(uint32_t)irt_type(t))
+static LJ_AINLINE IRType itype2irt(const TValue *tv)
+{
+  if (tvisnum(tv))
+    return IRT_NUM;
+#if LJ_64
+  else if (tvislightud(tv))
+    return IRT_LIGHTUD;
+#endif
+  else
+    return cast(IRType, ~uitype(tv));
+}
+
+#define irt_toitype(t) \
+  check_exp(!(LJ_64 && irt_islightud((t))), (int32_t)~(uint32_t)irt_type((t)))
 
 #define irt_isguard(t)          ((t).irt & IRT_GUARD)
 #define irt_ismarked(t)         ((t).irt & IRT_MARK)