José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * |
José Fonseca | 9a519ec | 2009-07-28 08:14:10 +0100 | [diff] [blame] | 3 | * Copyright 2009 VMware, Inc. |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 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 | |
José Fonseca | c5531f5 | 2009-08-21 10:57:48 +0100 | [diff] [blame] | 28 | /** |
| 29 | * LLVM control flow build helpers. |
| 30 | * |
| 31 | * @author Jose Fonseca <jfonseca@vmware.com> |
| 32 | */ |
| 33 | |
| 34 | #ifndef LP_BLD_FLOW_H |
| 35 | #define LP_BLD_FLOW_H |
| 36 | |
| 37 | |
| 38 | #include <llvm-c/Core.h> |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 39 | |
| 40 | |
José Fonseca | b4835ea | 2009-09-14 11:05:06 +0100 | [diff] [blame] | 41 | struct lp_type; |
José Fonseca | 3d7a886 | 2009-08-21 13:49:10 +0100 | [diff] [blame] | 42 | |
| 43 | |
José Fonseca | 8e6b925 | 2009-09-10 11:44:03 +0100 | [diff] [blame] | 44 | struct lp_build_flow_context; |
| 45 | |
| 46 | |
| 47 | struct lp_build_flow_context * |
| 48 | lp_build_flow_create(LLVMBuilderRef builder); |
| 49 | |
| 50 | void |
| 51 | lp_build_flow_destroy(struct lp_build_flow_context *flow); |
| 52 | |
| 53 | void |
| 54 | lp_build_flow_scope_begin(struct lp_build_flow_context *flow); |
| 55 | |
| 56 | void |
| 57 | lp_build_flow_scope_declare(struct lp_build_flow_context *flow, |
| 58 | LLVMValueRef *variable); |
| 59 | |
| 60 | void |
| 61 | lp_build_flow_scope_end(struct lp_build_flow_context *flow); |
| 62 | |
| 63 | void |
| 64 | lp_build_flow_skip_begin(struct lp_build_flow_context *flow); |
| 65 | |
| 66 | void |
| 67 | lp_build_flow_skip_cond_break(struct lp_build_flow_context *flow, |
| 68 | LLVMValueRef cond); |
| 69 | |
| 70 | void |
| 71 | lp_build_flow_skip_end(struct lp_build_flow_context *flow); |
| 72 | |
| 73 | |
José Fonseca | 3d7a886 | 2009-08-21 13:49:10 +0100 | [diff] [blame] | 74 | struct lp_build_mask_context |
| 75 | { |
José Fonseca | 8e6b925 | 2009-09-10 11:44:03 +0100 | [diff] [blame] | 76 | struct lp_build_flow_context *flow; |
José Fonseca | 3d7a886 | 2009-08-21 13:49:10 +0100 | [diff] [blame] | 77 | |
| 78 | LLVMTypeRef reg_type; |
| 79 | |
| 80 | LLVMValueRef value; |
José Fonseca | 3d7a886 | 2009-08-21 13:49:10 +0100 | [diff] [blame] | 81 | }; |
| 82 | |
| 83 | |
| 84 | void |
| 85 | lp_build_mask_begin(struct lp_build_mask_context *mask, |
José Fonseca | 8e6b925 | 2009-09-10 11:44:03 +0100 | [diff] [blame] | 86 | struct lp_build_flow_context *flow, |
José Fonseca | b4835ea | 2009-09-14 11:05:06 +0100 | [diff] [blame] | 87 | struct lp_type type, |
José Fonseca | 3d7a886 | 2009-08-21 13:49:10 +0100 | [diff] [blame] | 88 | LLVMValueRef value); |
| 89 | |
| 90 | /** |
| 91 | * Bitwise AND the mask with the given value, if a previous mask was set. |
| 92 | */ |
| 93 | void |
| 94 | lp_build_mask_update(struct lp_build_mask_context *mask, |
| 95 | LLVMValueRef value); |
| 96 | |
| 97 | LLVMValueRef |
| 98 | lp_build_mask_end(struct lp_build_mask_context *mask); |
| 99 | |
| 100 | |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 101 | /** |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 102 | * LLVM's IR doesn't represent for-loops directly. Furthermore it |
| 103 | * it requires creating code blocks, branches, phi variables, so it |
| 104 | * requires a fair amount of code. |
| 105 | * |
| 106 | * @sa http://www.llvm.org/docs/tutorial/LangImpl5.html#for |
| 107 | */ |
José Fonseca | c5531f5 | 2009-08-21 10:57:48 +0100 | [diff] [blame] | 108 | struct lp_build_loop_state |
| 109 | { |
| 110 | LLVMBasicBlockRef block; |
| 111 | LLVMValueRef counter; |
| 112 | }; |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 113 | |
| 114 | |
| 115 | void |
| 116 | lp_build_loop_begin(LLVMBuilderRef builder, |
| 117 | LLVMValueRef start, |
José Fonseca | c5531f5 | 2009-08-21 10:57:48 +0100 | [diff] [blame] | 118 | struct lp_build_loop_state *state); |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 119 | |
| 120 | |
| 121 | void |
| 122 | lp_build_loop_end(LLVMBuilderRef builder, |
| 123 | LLVMValueRef end, |
| 124 | LLVMValueRef step, |
José Fonseca | c5531f5 | 2009-08-21 10:57:48 +0100 | [diff] [blame] | 125 | struct lp_build_loop_state *state); |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 126 | |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 127 | |
José Fonseca | 8783732 | 2009-07-27 01:23:15 +0100 | [diff] [blame] | 128 | |
Brian Paul | baeb3a2 | 2010-01-06 17:53:12 -0700 | [diff] [blame] | 129 | |
| 130 | struct lp_build_if_state |
| 131 | { |
| 132 | LLVMBuilderRef builder; |
| 133 | struct lp_build_flow_context *flow; |
Brian Paul | baeb3a2 | 2010-01-06 17:53:12 -0700 | [diff] [blame] | 134 | }; |
| 135 | |
| 136 | |
| 137 | void |
| 138 | lp_build_if(struct lp_build_if_state *ctx, |
| 139 | struct lp_build_flow_context *flow, |
| 140 | LLVMBuilderRef builder, |
| 141 | LLVMValueRef condition); |
| 142 | |
| 143 | void |
Brian Paul | baeb3a2 | 2010-01-06 17:53:12 -0700 | [diff] [blame] | 144 | lp_build_else(struct lp_build_if_state *ctx); |
| 145 | |
| 146 | void |
| 147 | lp_build_endif(struct lp_build_if_state *ctx); |
| 148 | |
| 149 | |
| 150 | |
José Fonseca | c5531f5 | 2009-08-21 10:57:48 +0100 | [diff] [blame] | 151 | #endif /* !LP_BLD_FLOW_H */ |