intel/fs: Do a stalling MFENCE in endInvocationInterlock()

[mesa.git] / src / intel / compiler / brw_eu_emit.c

diff --git a/src/intel/compiler/brw_eu_emit.c b/src/intel/compiler/brw_eu_emit.c
index 181932705f3b15e8f4aec470833c5d756f661ada..7b8783ee3d168226c1d99af099f0cf1b6acb15a6 100644 (file)
--- a/src/intel/compiler/brw_eu_emit.c
+++ b/src/intel/compiler/brw_eu_emit.c
@@ -3038,10 +3038,11 @@ void
 brw_memory_fence(struct brw_codegen *p,
                  struct brw_reg dst,
                  struct brw_reg src,
-                 enum opcode send_op)
+                 enum opcode send_op,
+                 bool stall)
 {
    const struct gen_device_info *devinfo = p->devinfo;
-   const bool commit_enable =
+   const bool commit_enable = stall ||
       devinfo->gen >= 10 || /* HSD ES # 1404612949 */
       (devinfo->gen == 7 && !devinfo->is_haswell);
    struct brw_inst *insn;
@@ -3080,6 +3081,9 @@ brw_memory_fence(struct brw_codegen *p,
       brw_MOV(p, dst, offset(dst, 1));
    }
 
+   if (stall)
+      brw_MOV(p, retype(brw_null_reg(), BRW_REGISTER_TYPE_UW), dst);
+
    brw_pop_insn_state(p);
 }