1 files changed, 7 insertions, 5 deletions

diff --git a/src/lj_ir.h b/src/lj_ir.h
index 75635f93..a6d36283 100644
--- a/src/lj_ir.h
+++ b/src/lj_ir.h
@@ -219,11 +219,13 @@ IRFLDEF(FLENUM)
 #define IRTOINT_TRUNCI64        5       /* Truncate number to int64_t. */
 #define IRTOINT_TOBIT           6       /* Cache only: TOBIT conversion. */
 
-/* CONV mode, stored in op2. Lowest 8 bits is the IRType of the source. */
-#define IRCONV_TRUNC            0x100   /* Truncate number to integer. */
-#define IRCONV_SEXT             0x200   /* Sign-extend integer to integer. */
-#define IRCONV_MODEMASK         0x3ff
-#define IRCONV_CSH              10
+/* CONV mode, stored in op2. */
+#define IRCONV_SRCMASK          0x001f  /* Source IRType. */
+#define IRCONV_DSTMASK          0x03e0  /* Dest. IRType (also in ir->t). */
+#define IRCONV_TRUNC            0x0400  /* Truncate number to integer. */
+#define IRCONV_SEXT             0x0800  /* Sign-extend integer to integer. */
+#define IRCONV_MODEMASK         0x0fff
+#define IRCONV_CSH              12
 /* Number to integer conversion mode. Ordered by strength of the checks. */
 #define IRCONV_TOBIT  (0<<IRCONV_CSH)   /* None. Cache only: TOBIT conv. */
 #define IRCONV_ANY    (1<<IRCONV_CSH)   /* Any FP number is ok. */