1 /**************************************************************************
2 *
3 * Copyright 2010 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 #include "util/u_debug.h"
29 #include "util/u_memory.h"
30 #include "lp_bld_assert.h"
31 #include "lp_bld_init.h"
32 #include "lp_bld_const.h"
33 #include "lp_bld_printf.h"
34
35
36 /**
37 * A call to lp_build_assert() will build a function call to this function.
38 */
39 static void
lp_assert(int condition,const char * msg)40 lp_assert(int condition, const char *msg)
41 {
42 if (!condition) {
43 debug_printf("LLVM assertion '%s' failed!\n", msg);
44 assert(condition);
45 }
46 }
47
48
49
50 /**
51 * lp_build_assert.
52 *
53 * Build an assertion in LLVM IR by building a function call to the
54 * lp_assert() function above.
55 *
56 * \param condition should be an 'i1' or 'i32' value
57 * \param msg a string to print if the assertion fails.
58 */
59 void
lp_build_assert(struct gallivm_state * gallivm,LLVMValueRef condition,const char * msg)60 lp_build_assert(struct gallivm_state *gallivm,
61 LLVMValueRef condition,
62 const char *msg)
63 {
64 LLVMBuilderRef builder = gallivm->builder;
65 LLVMContextRef context = gallivm->context;
66 LLVMTypeRef arg_types[2];
67 LLVMTypeRef ret_type;
68 LLVMValueRef function;
69 LLVMValueRef args[2];
70 LLVMValueRef msg_string;
71
72 msg_string = lp_build_const_string(gallivm, msg);
73
74 ret_type = LLVMVoidTypeInContext(context);
75 arg_types[0] = LLVMInt32TypeInContext(context);
76 arg_types[1] = LLVMPointerType(LLVMInt8TypeInContext(context), 0);
77
78 function = lp_build_const_func_pointer(gallivm,
79 func_to_pointer((func_pointer)lp_assert),
80 ret_type, arg_types, ARRAY_SIZE(arg_types),
81 "assert");
82
83 /* build function call param list */
84 args[0] = LLVMBuildZExt(builder, condition, arg_types[0], "");
85 args[1] = msg_string;
86
87 /* check arg types */
88 assert(LLVMTypeOf(args[0]) == arg_types[0]);
89 assert(LLVMTypeOf(args[1]) == arg_types[1]);
90
91 LLVMBuildCall(builder, function, args, ARRAY_SIZE(args), "");
92 }
93