Inhibit CSE for table.concat().

1 files changed, 2 insertions, 0 deletions

diff --git a/src/lj_opt_fold.c b/src/lj_opt_fold.c
index 94d5702f..d8b6e884 100644
--- a/src/lj_opt_fold.c
+++ b/src/lj_opt_fold.c
@@ -602,6 +602,8 @@ LJFOLDF(bufstr_kfold_cse)
                    ira->o == IR_CALLL || ira->o == IR_CARG);
         if (ira->o == IR_BUFHDR && !(ira->op2 & IRBUFHDR_APPEND))
           return ref;  /* CSE succeeded. */
+        if (ira->o == IR_CALLL && ira->op2 == IRCALL_lj_buf_puttab)
+          break;
         ira = IR(ira->op1);
         irb = IR(irb->op1);
       }