Add IR_XBAR, a barrier against XLOAD/XSTORE optimizations.

2011-02-07 21:59:25 +01:00
parent 0a50356b6f
commit 97d0874ff5
4 changed files with 6 additions and 2 deletions
--- a/src/lj_asm.c
+++ b/src/lj_asm.c
@@ -3991,7 +3991,7 @@ static void asm_ir(ASMState *as, IRIns *ir)
  switch ((IROp)ir->o) {
  /* Miscellaneous ops. */
  case IR_LOOP: asm_loop(as); break;
-  case IR_NOP: lua_assert(!ra_used(ir)); break;
+  case IR_NOP: case IR_XBAR: lua_assert(!ra_used(ir)); break;
  case IR_PHI: asm_phi(as, ir); break;
  case IR_HIOP: asm_hiop(as, ir); break;