1 files changed, 87 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_ir_allocator.h b/src/mesa/drivers/dri/i965/brw_ir_allocator.h
new file mode 100644
index 0000000..b1237ed
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+++ b/src/mesa/drivers/dri/i965/brw_ir_allocator.h
@@ -0,0 +1,87 @@
+/* -*- c++ -*- */
+/*
+ * Copyright © 2010-2014 Intel Corporation
+ *
+ * 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.
+ */
+
+#ifndef BRW_IR_ALLOCATOR_H
+#define BRW_IR_ALLOCATOR_H
+
+#include "main/macros.h"
+
+namespace brw {
+   /**
+    * Simple allocator used to keep track of virtual GRFs.
+    */
+   class simple_allocator {
+   public:
+      simple_allocator() :
+         sizes(NULL), offsets(NULL), count(0), total_size(0), capacity(0)
+      {
+      }
+
+      ~simple_allocator()
+      {
+         free(offsets);
+         free(sizes);
+      }
+
+      unsigned
+      allocate(unsigned size)
+      {
+         if (capacity <= count) {
+            capacity = MAX2(16, capacity * 2);
+            sizes = (unsigned *)realloc(sizes, capacity * sizeof(unsigned));
+            offsets = (unsigned *)realloc(offsets, capacity * sizeof(unsigned));
+         }
+
+         sizes[count] = size;
+         offsets[count] = total_size;
+         total_size += size;
+
+         return count++;
+      }
+
+      /**
+       * Array of sizes for each allocation.  The allocation unit is up to the
+       * back-end, but it's expected to be one scalar value in the FS back-end
+       * and one vec4 in the VEC4 back-end.
+       */
+      unsigned *sizes;
+
+      /**
+       * Array of offsets from the start of the VGRF space in allocation
+       * units.
+       */
+      unsigned *offsets;
+
+      /** Total number of VGRFs allocated. */
+      unsigned count;
+
+      /** Cumulative size in allocation units. */
+      unsigned total_size;
+
+   private:
+      unsigned capacity;
+   };
+}
+
+#endif