1 files changed, 9 insertions, 2 deletions

diff --git a/src/lj_opt_sink.c b/src/lj_opt_sink.c
index df7f58af..c5323b11 100644
--- a/src/lj_opt_sink.c
+++ b/src/lj_opt_sink.c
@@ -165,8 +165,8 @@ static void sink_remark_phi(jit_State *J)
 /* Sweep instructions and tag sunken allocations and stores. */
 static void sink_sweep_ins(jit_State *J)
 {
-  IRIns *ir, *irfirst = IR(J->cur.nk);
-  for (ir = IR(J->cur.nins-1) ; ir >= irfirst; ir--) {
+  IRIns *ir, *irbase = IR(REF_BASE);
+  for (ir = IR(J->cur.nins-1) ; ir >= irbase; ir--) {
     switch (ir->o) {
     case IR_ASTORE: case IR_HSTORE: case IR_FSTORE: case IR_XSTORE: {
       IRIns *ira = sink_checkalloc(J, ir);
@@ -216,6 +216,13 @@ static void sink_sweep_ins(jit_State *J)
       break;
     }
   }
+  for (ir = IR(J->cur.nk); ir < irbase; ir++) {
+    irt_clearmark(ir->t);
+    ir->prev = REGSP_INIT;
+    /* The false-positive of irt_is64() for ASMREF_L (REF_NIL) is OK here. */
+    if (irt_is64(ir->t) && ir->o != IR_KNULL)
+      ir++;
+  }
 }
 
 /* Allocation sinking and store sinking.