Merge Mesa 21.1.5

1 files changed, 67 insertions, 0 deletions

diff --git a/lib/mesa/src/compiler/glsl/lower_builtins.cpp b/lib/mesa/src/compiler/glsl/lower_builtins.cpp
new file mode 100644
index 000000000..7b5ac204e
--- /dev/null
+++ b/lib/mesa/src/compiler/glsl/lower_builtins.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright © 2019 Google, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file lower_builtins.cpp
+ *
+ * Inline calls to builtin functions.
+ */
+
+#include "ir.h"
+#include "ir_optimization.h"
+
+namespace {
+
+class lower_builtins_visitor : public ir_hierarchical_visitor {
+public:
+   lower_builtins_visitor() : progress(false) { }
+   ir_visitor_status visit_leave(ir_call *);
+   bool progress;
+};
+
+}
+
+bool
+lower_builtins(exec_list *instructions)
+{
+   lower_builtins_visitor v;
+   visit_list_elements(&v, instructions);
+   return v.progress;
+}
+
+ir_visitor_status
+lower_builtins_visitor::visit_leave(ir_call *ir)
+{
+   /* lower_precision() also inlines some intrinsics, which can't be inlined
+    * further.
+    */
+   if (!ir->callee->is_builtin() || ir->callee->is_intrinsic())
+      return visit_continue;
+
+   ir->generate_inline(ir);
+   ir->remove();
+
+   this->progress = true;
+
+   return visit_continue;
+}