From 58bcb5401d85b4a21f6d9ea4eb7bff8e1ed7110f Mon Sep 17 00:00:00 2001
From: Jason Ekstrand <jason@jlekstrand.net>
Date: Tue, 27 Oct 2020 00:36:53 -0500
Subject: [PATCH] intel/fs: QUAD_SWIZZLE requires packed data

We could probably support some strides if we tried hard enough but the
whole point of this opcode is to accelerate things with crazy Align16 or
crazy regions.  It's ok if we have to emit an extra MOV to get a packed
source.

Fixes: 8b4a5e641bc3 "intel/fs: Add support for subgroup quad operations"
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7329>
---
 src/intel/compiler/brw_fs_copy_propagation.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/intel/compiler/brw_fs_copy_propagation.cpp b/src/intel/compiler/brw_fs_copy_propagation.cpp
index 917c3abfe9e..6896987055f 100644
--- a/src/intel/compiler/brw_fs_copy_propagation.cpp
+++ b/src/intel/compiler/brw_fs_copy_propagation.cpp
@@ -437,6 +437,7 @@ instruction_requires_packed_data(fs_inst *inst)
    case FS_OPCODE_DDX_COARSE:
    case FS_OPCODE_DDY_FINE:
    case FS_OPCODE_DDY_COARSE:
+   case SHADER_OPCODE_QUAD_SWIZZLE:
       return true;
    default:
       return false;