From c87fab0008453567b45dd5e5eb7dd5d026990071 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Mon, 3 Aug 2009 22:24:01 +0100
Subject: llvmpipe: Move type support functions into a separate file.

---
 src/gallium/drivers/llvmpipe/lp_bld_type.h | 131 +++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 src/gallium/drivers/llvmpipe/lp_bld_type.h

(limited to 'src/gallium/drivers/llvmpipe/lp_bld_type.h')

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_type.h b/src/gallium/drivers/llvmpipe/lp_bld_type.h
new file mode 100644
index 0000000000..4623183223
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_bld_type.h
@@ -0,0 +1,131 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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
+ * Convenient representation of SIMD types.
+ *
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+
+#ifndef LP_BLD_TYPE_H
+#define LP_BLD_TYPE_H
+
+
+#include <llvm-c/Core.h>  
+
+#include <pipe/p_compiler.h>
+
+
+/**
+ * Several functions can only cope with vectors of length up to this value.
+ * You may need to increase that value if you want to represent bigger vectors.
+ */
+#define LP_MAX_VECTOR_LENGTH 16
+
+
+/**
+ * The LLVM type system can't conveniently express all the things we care about
+ * on the types used for intermediate computations, such as signed vs unsigned,
+ * normalized values, or fixed point.
+ */
+union lp_type {
+   struct {
+      /** 
+       * Floating-point. Cannot be used with fixed. Integer numbers are
+       * represented by this zero.
+       */
+      unsigned floating:1;
+
+      /** 
+       * Fixed-point. Cannot be used with floating. Integer numbers are
+       * represented by this zero.
+       */
+      unsigned fixed:1;
+      
+      /** 
+       * Whether it can represent negative values or not.
+       *
+       * Floating point values should always have this bit set.
+       */
+      unsigned sign:1;
+
+      /**
+       * Whether values are normalized to fit [0, 1] interval, or [-1, 1]
+       * interval for signed types.
+       *
+       * For integer types it means the representable integer range should be
+       * interpreted as the interval above.
+       *
+       * For floating and fixed point formats it means the values should be
+       * clamped to the interval above.
+       */
+      unsigned norm:1;
+
+      /**
+       * Element width.
+       *
+       * For fixed point values, the fixed point is assumed to be at half the
+       * width.
+       */
+      unsigned width:14;
+
+      /** 
+       * Vector length.
+       *
+       * width*length should be a power of two greater or equal to eight.
+       *
+       * @sa LP_MAX_VECTOR_LENGTH
+       */
+      unsigned length:14;
+   };
+   uint32_t value;
+};
+
+
+LLVMTypeRef
+lp_build_elem_type(union lp_type type);
+
+
+LLVMTypeRef
+lp_build_vec_type(union lp_type type);
+
+
+boolean
+lp_check_elem_type(union lp_type type, LLVMTypeRef elem_type);
+
+
+boolean
+lp_check_vec_type(union lp_type type, LLVMTypeRef vec_type);
+
+
+boolean
+lp_check_value(union lp_type type, LLVMValueRef val);
+
+
+#endif /* !LP_BLD_TYPE_H */
-- 
cgit v1.2.3