x86/x64: Don't fuse loads across table.clear.

Reported by Peter Cawley. #1117

diff --git a/src/lj_asm_x86.h b/src/lj_asm_x86.h
index d98fb827688676fa838d8de5a69ee4cc22f569c0..a105b4391caddbb574fee9b32d7231244c9a7305 100644 (file)
--- a/src/lj_asm_x86.h
+++ b/src/lj_asm_x86.h
@@ -473,6 +473,7 @@ static Reg asm_fuseload(ASMState *as, IRRef ref, RegSet allow)
       }
     } else if (ir->o == IR_ALOAD || ir->o == IR_HLOAD || ir->o == IR_ULOAD) {
       if (noconflict(as, ref, ir->o + IRDELTA_L2S, 0) &&
+         noconflict(as, ref, IR_CALLS, 0) &&  /* Don't cross table.clear. */
          !(LJ_GC64 && irt_isaddr(ir->t))) {
        asm_fuseahuref(as, ir->op1, xallow);
        return RID_MRM;