Mesa (master): pan/mdg: Avoid fusing ld_vary_16 with non-zero component

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Module: Mesa
Branch: master
Commit: 7ac1bb047aa96805199b0d85ee49367f6a2b0531
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7ac1bb047aa96805199b0d85ee49367f6a2b0531

Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date:   Wed Jun 10 14:06:43 2020 -0400

pan/mdg: Avoid fusing ld_vary_16 with non-zero component

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5423>

---

 src/panfrost/midgard/nir_fuse_io_16.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/panfrost/midgard/nir_fuse_io_16.c b/src/panfrost/midgard/nir_fuse_io_16.c
index ddeb4491de4..ed4b7750d04 100644
--- a/src/panfrost/midgard/nir_fuse_io_16.c
+++ b/src/panfrost/midgard/nir_fuse_io_16.c
@@ -67,6 +67,11 @@ nir_fuse_io_16(nir_shader *shader)
             if (nir_dest_bit_size(intr->dest) != 32)
                     continue;
 
+            /* We swizzle at a 32-bit level so need a multiple of 2. We could
+             * do a bit better and handle even components though */
+            if (nir_intrinsic_component(intr))
+               continue;
+
             if (!intr->dest.is_ssa)
                continue;