v2 (Curro):
  - Print it also for execsize < 4.
  - QtrCtrl is still in effect, so print 2 * qtr_ctl + nib_ctl + 1
  - Do not read the nib ctl from the instruction in gen < 7,
    the field only exists in gen7+.
---
 src/mesa/drivers/dri/i965/brw_disasm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_disasm.c 
b/src/mesa/drivers/dri/i965/brw_disasm.c
index 1d2a4d2..0c43217 100644
--- a/src/mesa/drivers/dri/i965/brw_disasm.c
+++ b/src/mesa/drivers/dri/i965/brw_disasm.c
@@ -1193,7 +1193,11 @@ qtr_ctrl(FILE *file, const struct gen_device_info 
*devinfo, brw_inst *inst)
    int qtr_ctl = brw_inst_qtr_control(devinfo, inst);
    int exec_size = 1 << brw_inst_exec_size(devinfo, inst);
 
-   if (exec_size == 8) {
+   if (exec_size < 8) {
+      const unsigned nib_ctl = devinfo->gen < 7 ? 0 :
+                               brw_inst_nib_control(devinfo, inst);
+      format(file, " %dN", qtr_ctl * 2 + nib_ctl + 1);
+   } else if (exec_size == 8) {
       switch (qtr_ctl) {
       case 0:
          string(file, " 1Q");
-- 
2.7.4

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