pan/midgard: Lower bitfield extract to shifts

Let's lower bitfield extract to shifts until we figure out if it can be
natively supported.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3676>

diff --git a/src/panfrost/midgard/midgard_compile.h b/src/panfrost/midgard/midgard_compile.h
index 51d1c3f..91086f1 100644 (file)
--- a/src/panfrost/midgard/midgard_compile.h
+++ b/src/panfrost/midgard/midgard_compile.h
@@ -148,6 +148,7 @@ static const nir_shader_compiler_options midgard_nir_options = {
 
         .lower_doubles_options = nir_lower_dmod,
 
+        .lower_bitfield_extract_to_shifts = true,
         .vectorize_io = true,
         .use_interpolated_input_intrinsics = true
 };