From: Mike Pall <mike>
Date: Thu, 13 Jan 2022 13:40:11 +0000 (+0100)
Subject: Fix ABC FOLD rule with constants.
X-Git-Tag: v2.1.ROLLING~105^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c8bcf1e5fb8eb72c7e35604fdfd27bba512761bb;p=thirdparty%2FLuaJIT.git

Fix ABC FOLD rule with constants.

Reported by XmiliaH.
---

diff --git a/src/lj_opt_fold.c b/src/lj_opt_fold.c
index 6bb3fc59..1723af60 100644
--- a/src/lj_opt_fold.c
+++ b/src/lj_opt_fold.c
@@ -1682,14 +1682,15 @@ LJFOLDF(abc_fwd)
 LJFOLD(ABC any KINT)
 LJFOLDF(abc_k)
 {
+  PHIBARRIER(fleft);
   if (LJ_LIKELY(J->flags & JIT_F_OPT_ABC)) {
     IRRef ref = J->chain[IR_ABC];
     IRRef asize = fins->op1;
     while (ref > asize) {
       IRIns *ir = IR(ref);
       if (ir->op1 == asize && irref_isk(ir->op2)) {
-	int32_t k = IR(ir->op2)->i;
-	if (fright->i > k)
+	uint32_t k = (uint32_t)IR(ir->op2)->i;
+	if ((uint32_t)fright->i > k)
 	  ir->op2 = fins->op2;
 	return DROPFOLD;
       }