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
46 struct lp_type;
47
48
49 unsigned
50 lp_mantissa(struct lp_type type);
51
52
53 unsigned
54 lp_const_shift(struct lp_type type);
55
56
57 unsigned
58 lp_const_offset(struct lp_type type);
59
60
61 double
62 lp_const_scale(struct lp_type type);
63
64 double
65 lp_const_min(struct lp_type type);
66
67
68 double
69 lp_const_max(struct lp_type type);
70
71
72 double
73 lp_const_eps(struct lp_type type);
74
75
76 LLVMValueRef
77 lp_build_undef(struct gallivm_state *gallivm, struct lp_type type);
78
79
80 LLVMValueRef
81 lp_build_zero(struct gallivm_state *gallivm, struct lp_type type);
82
83
84 LLVMValueRef
85 lp_build_one(struct gallivm_state *gallivm, struct lp_type type);
86
87
88 LLVMValueRef
89 lp_build_const_elem(struct gallivm_state *gallivm, struct lp_type type,
90 double val);
91
92 LLVMValueRef
93 lp_build_const_vec(struct gallivm_state *gallivm, struct lp_type type,
94 double val);
95
96
97 LLVMValueRef
98 lp_build_const_int_vec(struct gallivm_state *gallivm,
99 struct lp_type type, long long val);
100
101
102 LLVMValueRef
103 lp_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
108 LLVMValueRef
109 lp_build_const_mask_aos(struct gallivm_state *gallivm,
110 struct lp_type type,
111 unsigned mask,
112 unsigned channels);
113
114
115 LLVMValueRef
116 lp_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
123 static inline LLVMValueRef
lp_build_const_int32(struct gallivm_state * gallivm,int i)124 lp_build_const_int32(struct gallivm_state *gallivm, int i)
125 {
126 return LLVMConstInt(LLVMInt32TypeInContext(gallivm->context), i, 0);
127 }
128
129 static inline LLVMValueRef
lp_build_const_int64(struct gallivm_state * gallivm,int64_t i)130 lp_build_const_int64(struct gallivm_state *gallivm, int64_t i)
131 {
132 return LLVMConstInt(LLVMInt64TypeInContext(gallivm->context), i, 0);
133 }
134
135 static inline LLVMValueRef
lp_build_const_float(struct gallivm_state * gallivm,float x)136 lp_build_const_float(struct gallivm_state *gallivm, float x)
137 {
138 return LLVMConstReal(LLVMFloatTypeInContext(gallivm->context), x);
139 }
140
141 static inline LLVMValueRef
lp_build_const_double(struct gallivm_state * gallivm,float x)142 lp_build_const_double(struct gallivm_state *gallivm, float x)
143 {
144 return LLVMConstReal(LLVMDoubleTypeInContext(gallivm->context), x);
145 }
146
147
148 /** Return constant-valued pointer to int */
149 static inline LLVMValueRef
lp_build_const_int_pointer(struct gallivm_state * gallivm,const void * ptr)150 lp_build_const_int_pointer(struct gallivm_state *gallivm, const void *ptr)
151 {
152 LLVMTypeRef int_type;
153 LLVMValueRef v;
154
155 /* int type large enough to hold a pointer */
156 int_type = LLVMIntTypeInContext(gallivm->context, 8 * sizeof(void *));
157 v = LLVMConstInt(int_type, (uintptr_t) ptr, 0);
158 v = LLVMBuildIntToPtr(gallivm->builder, v,
159 LLVMPointerType(int_type, 0),
160 "cast int to ptr");
161 return v;
162 }
163
164
165 LLVMValueRef
166 lp_build_const_string(struct gallivm_state *gallivm,
167 const char *str);
168
169
170 LLVMValueRef
171 lp_build_const_func_pointer(struct gallivm_state *gallivm,
172 const void *ptr,
173 LLVMTypeRef ret_type,
174 LLVMTypeRef *arg_types,
175 unsigned num_args,
176 const char *name);
177
178
179 #endif /* !LP_BLD_CONST_H */
180