1 /**************************************************************************
3 * Copyright 2009 VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
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14 * The above copyright notice and this permission notice (including the
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24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 * LLVM control flow build helpers.
31 * @author Jose Fonseca <jfonseca@vmware.com>
38 #include "gallivm/lp_bld.h"
44 struct lp_build_flow_context
;
47 struct lp_build_flow_context
*
48 lp_build_flow_create(LLVMBuilderRef builder
);
51 lp_build_flow_destroy(struct lp_build_flow_context
*flow
);
54 lp_build_flow_scope_begin(struct lp_build_flow_context
*flow
);
57 lp_build_flow_scope_declare(struct lp_build_flow_context
*flow
,
58 LLVMValueRef
*variable
);
61 lp_build_flow_scope_end(struct lp_build_flow_context
*flow
);
64 lp_build_flow_skip_begin(struct lp_build_flow_context
*flow
);
67 lp_build_flow_skip_cond_break(struct lp_build_flow_context
*flow
,
71 lp_build_flow_skip_end(struct lp_build_flow_context
*flow
);
74 struct lp_build_mask_context
76 struct lp_build_flow_context
*flow
;
85 lp_build_mask_begin(struct lp_build_mask_context
*mask
,
86 struct lp_build_flow_context
*flow
,
91 * Bitwise AND the mask with the given value, if a previous mask was set.
94 lp_build_mask_update(struct lp_build_mask_context
*mask
,
98 lp_build_mask_end(struct lp_build_mask_context
*mask
);
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.
106 * @sa http://www.llvm.org/docs/tutorial/LangImpl5.html#for
108 struct lp_build_loop_state
110 LLVMBasicBlockRef block
;
111 LLVMValueRef counter
;
116 lp_build_loop_begin(LLVMBuilderRef builder
,
118 struct lp_build_loop_state
*state
);
122 lp_build_loop_end(LLVMBuilderRef builder
,
125 struct lp_build_loop_state
*state
);
128 lp_build_loop_end_cond(LLVMBuilderRef builder
,
131 int cond
, /* LLVM condition */
132 struct lp_build_loop_state
*state
);
137 struct lp_build_if_state
139 LLVMBuilderRef builder
;
140 struct lp_build_flow_context
*flow
;
145 lp_build_if(struct lp_build_if_state
*ctx
,
146 struct lp_build_flow_context
*flow
,
147 LLVMBuilderRef builder
,
148 LLVMValueRef condition
);
151 lp_build_else(struct lp_build_if_state
*ctx
);
154 lp_build_endif(struct lp_build_if_state
*ctx
);
157 lp_build_insert_new_block(LLVMBuilderRef builder
, const char *name
);
160 lp_build_alloca(LLVMBuilderRef builder
,
165 lp_build_array_alloca(LLVMBuilderRef builder
,
170 #endif /* !LP_BLD_FLOW_H */