intel/fs: Disable opt_sampler_eot() in 32-wide dispatch.

Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Matt Turner <[email protected]>

2 files changed, 6 insertions, 1 deletions

diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp
index 84becb3d4b4..bf301f4424b 100644
--- a/src/intel/compiler/brw_fs.cpp
+++ b/src/intel/compiler/brw_fs.cpp
@@ -2666,7 +2666,7 @@ fs_visitor::opt_sampler_eot()
 {
    brw_wm_prog_key *key = (brw_wm_prog_key*) this->key;
 
-   if (stage != MESA_SHADER_FRAGMENT)
+   if (stage != MESA_SHADER_FRAGMENT || dispatch_width > 16)
       return false;
 
    if (devinfo->gen != 9 && !devinfo->is_cherryview)
diff --git a/src/intel/compiler/brw_fs_generator.cpp b/src/intel/compiler/brw_fs_generator.cpp
index 2265a60d1a6..0134afe0fe6 100644
--- a/src/intel/compiler/brw_fs_generator.cpp
+++ b/src/intel/compiler/brw_fs_generator.cpp
@@ -887,6 +887,11 @@ fs_generator::generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src
    uint32_t return_format;
    bool is_combined_send = inst->eot;
 
+   /* Sampler EOT message of less than the dispatch width would kill the
+    * thread prematurely.
+    */
+   assert(!is_combined_send || inst->exec_size == dispatch_width);
+
    switch (dst.type) {
    case BRW_REGISTER_TYPE_D:
       return_format = BRW_SAMPLER_RETURN_FORMAT_SINT32;