1/**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28/**
29 * @file
30 * Helper functions for constant building.
31 *
32 * @author Jose Fonseca <jfonseca@vmware.com>
33 */
34
35
36#ifndef LP_BLD_CONST_H
37#define LP_BLD_CONST_H
38
39
40#include "pipe/p_compiler.h"
41#include "gallivm/lp_bld.h"
42#include "gallivm/lp_bld_init.h"
43
44
45
46struct lp_type;
47
48
49unsigned
50lp_mantissa(struct lp_type type);
51
52
53unsigned
54lp_const_shift(struct lp_type type);
55
56
57unsigned
58lp_const_offset(struct lp_type type);
59
60
61double
62lp_const_scale(struct lp_type type);
63
64double
65lp_const_min(struct lp_type type);
66
67
68double
69lp_const_max(struct lp_type type);
70
71
72double
73lp_const_eps(struct lp_type type);
74
75
76LLVMValueRef
77lp_build_undef(struct gallivm_state *gallivm, struct lp_type type);
78
79
80LLVMValueRef
81lp_build_zero(struct gallivm_state *gallivm, struct lp_type type);
82
83
84LLVMValueRef
85lp_build_one(struct gallivm_state *gallivm, struct lp_type type);
86
87
88LLVMValueRef
89lp_build_const_elem(struct gallivm_state *gallivm, struct lp_type type,
90                    double val);
91
92LLVMValueRef
93lp_build_const_vec(struct gallivm_state *gallivm, struct lp_type type,
94                   double val);
95
96
97LLVMValueRef
98lp_build_const_int_vec(struct gallivm_state *gallivm,
99                       struct lp_type type, long long val);
100
101
102LLVMValueRef
103lp_build_const_aos(struct gallivm_state *gallivm, struct lp_type type,
104                   double r, double g, double b, double a,
105                   const unsigned char *swizzle);
106
107
108LLVMValueRef
109lp_build_const_mask_aos(struct gallivm_state *gallivm,
110                        struct lp_type type,
111                        unsigned mask,
112                        unsigned channels);
113
114
115LLVMValueRef
116lp_build_const_mask_aos_swizzled(struct gallivm_state *gallivm,
117                                 struct lp_type type,
118                                 unsigned mask,
119                                 unsigned channels,
120                                 const unsigned char *swizzle);
121
122
123static inline LLVMValueRef
124lp_build_const_int32(struct gallivm_state *gallivm, int i)
125{
126   return LLVMConstInt(LLVMInt32TypeInContext(gallivm->context), i, 0);
127}
128
129
130static inline LLVMValueRef
131lp_build_const_float(struct gallivm_state *gallivm, float x)
132{
133   return LLVMConstReal(LLVMFloatTypeInContext(gallivm->context), x);
134}
135
136
137/** Return constant-valued pointer to int */
138static inline LLVMValueRef
139lp_build_const_int_pointer(struct gallivm_state *gallivm, const void *ptr)
140{
141   LLVMTypeRef int_type;
142   LLVMValueRef v;
143
144   /* int type large enough to hold a pointer */
145   int_type = LLVMIntTypeInContext(gallivm->context, 8 * sizeof(void *));
146   v = LLVMConstInt(int_type, (uintptr_t) ptr, 0);
147   v = LLVMBuildIntToPtr(gallivm->builder, v,
148                         LLVMPointerType(int_type, 0),
149                         "cast int to ptr");
150   return v;
151}
152
153
154LLVMValueRef
155lp_build_const_string(struct gallivm_state *gallivm,
156                      const char *str);
157
158
159LLVMValueRef
160lp_build_const_func_pointer(struct gallivm_state *gallivm,
161                            const void *ptr,
162                            LLVMTypeRef ret_type,
163                            LLVMTypeRef *arg_types,
164                            unsigned num_args,
165                            const char *name);
166
167
168#endif /* !LP_BLD_CONST_H */
169