freedreno/ir3: number instructions from one

ra_block_compute_live_ranges() treats zero as "not yet defined", so
probably best to not let this be a valid instruction #

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3569>

diff --git a/src/freedreno/ir3/ir3.c b/src/freedreno/ir3/ir3.c
index 18c2936..b9bcf3b 100644 (file)
--- a/src/freedreno/ir3/ir3.c
+++ b/src/freedreno/ir3/ir3.c
@@ -1105,7 +1105,7 @@ ir3_clear_mark(struct ir3 *ir)
 unsigned
 ir3_count_instructions(struct ir3 *ir)
 {
-       unsigned cnt = 0;
+       unsigned cnt = 1;
        foreach_block (block, &ir->block_list) {
                block->start_ip = cnt;
                block->end_ip = cnt;