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| /************************************************************************** |
| * |
| * 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 "util/u_format.h" |
| #include "pipe/p_compiler.h" |
| #include "gallivm/lp_bld.h" |
| |
| /** |
| * Native SIMD architecture width available at runtime. |
| * |
| * Using this width should give the best performance, |
| * and it determines the necessary alignment of vector variables. |
| */ |
| extern unsigned lp_native_vector_width; |
| |
| /** |
| * Maximum supported vector width (not necessarily supported at run-time). |
| * |
| * Should only be used when lp_native_vector_width isn't available, |
| * i.e. sizing/alignment of non-malloced variables. |
| */ |
| #define LP_MAX_VECTOR_WIDTH 256 |
| |
| /** |
| * Minimum vector alignment for static variable alignment |
| * |
| * It should always be a constant equal to LP_MAX_VECTOR_WIDTH/8. An |
| * expression is non-portable. |
| */ |
| #define LP_MIN_VECTOR_ALIGN 32 |
| |
| /** |
| * 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 (LP_MAX_VECTOR_WIDTH/8) |
| |
| /** |
| * 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. |
| */ |
| struct lp_type { |
| /** |
| * 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. |
| * |
| * If this is not set for floating point, it means that all values are |
| * assumed to be positive. |
| */ |
| 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. If length==1, this is a scalar (float/int) type. |
| * |
| * width*length should be a power of two greater or equal to eight. |
| * |
| * @sa LP_MAX_VECTOR_LENGTH |
| */ |
| unsigned length:14; |
| }; |
| |
| |
| /** |
| * We need most of the information here in order to correctly and efficiently |
| * translate an arithmetic operation into LLVM IR. Putting it here avoids the |
| * trouble of passing it as parameters. |
| */ |
| struct lp_build_context |
| { |
| struct gallivm_state *gallivm; |
| |
| /** |
| * This not only describes the input/output LLVM types, but also whether |
| * to normalize/clamp the results. |
| */ |
| struct lp_type type; |
| |
| /** Same as lp_build_elem_type(type) */ |
| LLVMTypeRef elem_type; |
| |
| /** Same as lp_build_vec_type(type) */ |
| LLVMTypeRef vec_type; |
| |
| /** Same as lp_build_int_elem_type(type) */ |
| LLVMTypeRef int_elem_type; |
| |
| /** Same as lp_build_int_vec_type(type) */ |
| LLVMTypeRef int_vec_type; |
| |
| /** Same as lp_build_undef(type) */ |
| LLVMValueRef undef; |
| |
| /** Same as lp_build_zero(type) */ |
| LLVMValueRef zero; |
| |
| /** Same as lp_build_one(type) */ |
| LLVMValueRef one; |
| }; |
| |
| |
| /** |
| * Converts a format description into an lp_type. |
| * |
| * Only works with "array formats". |
| * |
| * e.g. With PIPE_FORMAT_R32G32B32A32_FLOAT returns an lp_type with float[4] |
| */ |
| static INLINE void |
| lp_type_from_format_desc(struct lp_type* type, const struct util_format_description *format_desc) |
| { |
| assert(format_desc->is_array); |
| assert(!format_desc->is_mixed); |
| |
| memset(type, 0, sizeof(struct lp_type)); |
| type->floating = format_desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT; |
| type->fixed = format_desc->channel[0].type == UTIL_FORMAT_TYPE_FIXED; |
| type->sign = format_desc->channel[0].type != UTIL_FORMAT_TYPE_UNSIGNED; |
| type->norm = format_desc->channel[0].normalized; |
| type->width = format_desc->channel[0].size; |
| type->length = format_desc->nr_channels; |
| } |
| |
| |
| static INLINE void |
| lp_type_from_format(struct lp_type* type, enum pipe_format format) |
| { |
| lp_type_from_format_desc(type, util_format_description(format)); |
| } |
| |
| |
| static INLINE unsigned |
| lp_type_width(struct lp_type type) |
| { |
| return type.width * type.length; |
| } |
| |
| |
| /** Create scalar float type */ |
| static INLINE struct lp_type |
| lp_type_float(unsigned width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.floating = TRUE; |
| res_type.sign = TRUE; |
| res_type.width = width; |
| res_type.length = 1; |
| |
| return res_type; |
| } |
| |
| |
| /** Create vector of float type */ |
| static INLINE struct lp_type |
| lp_type_float_vec(unsigned width, unsigned total_width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.floating = TRUE; |
| res_type.sign = TRUE; |
| res_type.width = width; |
| res_type.length = total_width / width; |
| |
| return res_type; |
| } |
| |
| |
| /** Create scalar int type */ |
| static INLINE struct lp_type |
| lp_type_int(unsigned width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.sign = TRUE; |
| res_type.width = width; |
| res_type.length = 1; |
| |
| return res_type; |
| } |
| |
| |
| /** Create vector int type */ |
| static INLINE struct lp_type |
| lp_type_int_vec(unsigned width, unsigned total_width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.sign = TRUE; |
| res_type.width = width; |
| res_type.length = total_width / width; |
| |
| return res_type; |
| } |
| |
| |
| /** Create scalar uint type */ |
| static INLINE struct lp_type |
| lp_type_uint(unsigned width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.width = width; |
| res_type.length = 1; |
| |
| return res_type; |
| } |
| |
| |
| /** Create vector uint type */ |
| static INLINE struct lp_type |
| lp_type_uint_vec(unsigned width, unsigned total_width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.width = width; |
| res_type.length = total_width / width; |
| |
| return res_type; |
| } |
| |
| |
| static INLINE struct lp_type |
| lp_type_unorm(unsigned width, unsigned total_width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.norm = TRUE; |
| res_type.width = width; |
| res_type.length = total_width / width; |
| |
| return res_type; |
| } |
| |
| |
| static INLINE struct lp_type |
| lp_type_fixed(unsigned width, unsigned total_width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.sign = TRUE; |
| res_type.fixed = TRUE; |
| res_type.width = width; |
| res_type.length = total_width / width; |
| |
| return res_type; |
| } |
| |
| |
| static INLINE struct lp_type |
| lp_type_ufixed(unsigned width, unsigned total_width) |
| { |
| struct lp_type res_type; |
| |
| memset(&res_type, 0, sizeof res_type); |
| res_type.fixed = TRUE; |
| res_type.width = width; |
| res_type.length = total_width / width; |
| |
| return res_type; |
| } |
| |
| |
| LLVMTypeRef |
| lp_build_elem_type(struct gallivm_state *gallivm, struct lp_type type); |
| |
| |
| LLVMTypeRef |
| lp_build_vec_type(struct gallivm_state *gallivm, struct lp_type type); |
| |
| |
| boolean |
| lp_check_elem_type(struct lp_type type, LLVMTypeRef elem_type); |
| |
| |
| boolean |
| lp_check_vec_type(struct lp_type type, LLVMTypeRef vec_type); |
| |
| |
| boolean |
| lp_check_value(struct lp_type type, LLVMValueRef val); |
| |
| |
| LLVMTypeRef |
| lp_build_int_elem_type(struct gallivm_state *gallivm, struct lp_type type); |
| |
| |
| LLVMTypeRef |
| lp_build_int_vec_type(struct gallivm_state *gallivm, struct lp_type type); |
| |
| |
| static INLINE struct lp_type |
| lp_float32_vec4_type(void) |
| { |
| struct lp_type type; |
| |
| memset(&type, 0, sizeof(type)); |
| type.floating = TRUE; |
| type.sign = TRUE; |
| type.norm = FALSE; |
| type.width = 32; |
| type.length = 4; |
| |
| return type; |
| } |
| |
| |
| static INLINE struct lp_type |
| lp_int32_vec4_type(void) |
| { |
| struct lp_type type; |
| |
| memset(&type, 0, sizeof(type)); |
| type.floating = FALSE; |
| type.sign = TRUE; |
| type.norm = FALSE; |
| type.width = 32; |
| type.length = 4; |
| |
| return type; |
| } |
| |
| |
| static INLINE struct lp_type |
| lp_unorm8_vec4_type(void) |
| { |
| struct lp_type type; |
| |
| memset(&type, 0, sizeof(type)); |
| type.floating = FALSE; |
| type.sign = FALSE; |
| type.norm = TRUE; |
| type.width = 8; |
| type.length = 4; |
| |
| return type; |
| } |
| |
| |
| struct lp_type |
| lp_elem_type(struct lp_type type); |
| |
| |
| struct lp_type |
| lp_uint_type(struct lp_type type); |
| |
| |
| struct lp_type |
| lp_int_type(struct lp_type type); |
| |
| |
| struct lp_type |
| lp_wider_type(struct lp_type type); |
| |
| |
| unsigned |
| lp_sizeof_llvm_type(LLVMTypeRef t); |
| |
| |
| const char * |
| lp_typekind_name(LLVMTypeKind t); |
| |
| |
| void |
| lp_dump_llvmtype(LLVMTypeRef t); |
| |
| |
| void |
| lp_build_context_init(struct lp_build_context *bld, |
| struct gallivm_state *gallivm, |
| struct lp_type type); |
| |
| |
| unsigned |
| lp_build_count_ir_module(LLVMModuleRef module); |
| |
| |
| #endif /* !LP_BLD_TYPE_H */ |