DUALNUM: Make overflow guards weak. Add IR_USE and IR_MULOV.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/lj_ir.h b/src/lj_ir.h
index 4813f250..060cf562 100644
--- a/src/lj_ir.h
+++ b/src/lj_ir.h
@@ -35,6 +35,7 @@
   _(BASE,       N , lit, lit) \
   _(HIOP,       S , ref, ref) \
   _(LOOP,       S , ___, ___) \
+  _(USE,        S , ref, ___) \
   _(PHI,        S , ref, ref) \
   _(RENAME,     S , ref, lit) \
   \
@@ -78,8 +79,9 @@
   _(FPMATH,     N , ref, lit) \
   \
   /* Overflow-checking arithmetic ops. */ \
-  _(ADDOV,      C , ref, ref) \
-  _(SUBOV,      N , ref, ref) \
+  _(ADDOV,      CW, ref, ref) \
+  _(SUBOV,      NW, ref, ref) \
+  _(MULOV,      CW, ref, ref) \
   \
   /* Memory ops. A = array, H = hash, U = upvalue, F = field, S = stack. */ \
   \
@@ -339,6 +341,7 @@ typedef enum {
 #define IRM_W                   0x80
 
 #define IRM_NW                  (IRM_N|IRM_W)
+#define IRM_CW                  (IRM_C|IRM_W)
 #define IRM_AW                  (IRM_A|IRM_W)
 #define IRM_LW                  (IRM_L|IRM_W)