1 /* -*- mesa-c++  -*-
2  *
3  * Copyright (c) 2018-2019 Collabora LTD
4  *
5  * Author: Gert Wollny <gert.wollny@collabora.com>
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * on the rights to use, copy, modify, merge, publish, distribute, sub
11  * license, and/or sell copies of the Software, and to permit persons to whom
12  * the Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the next
15  * paragraph) shall be included in all copies or substantial portions of the
16  * Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
25  */
26 
27 #ifndef SFN_IFELSEINSTRUCTION_H
28 #define SFN_IFELSEINSTRUCTION_H
29 
30 #include "sfn_instruction_alu.h"
31 
32 namespace r600  {
33 
34 class CFInstruction : public Instruction {
35 protected:
36    CFInstruction(instr_type type);
37 };
38 
39 class IfElseInstruction : public CFInstruction {
40 public:
41    IfElseInstruction(instr_type type);
42 };
43 
44 class IfInstruction : public IfElseInstruction {
45 public:
46    IfInstruction(AluInstruction *pred);
pred()47    const AluInstruction& pred() const {return *m_pred;}
48 private:
49    void do_evalue_liveness(LiverangeEvaluator& eval) const override;
50    bool is_equal_to(const Instruction& lhs) const override;
51    void do_print(std::ostream& os) const override;
52    std::shared_ptr<AluInstruction> m_pred;
53 };
54 
55 class ElseInstruction : public IfElseInstruction {
56 public:
57    ElseInstruction(IfInstruction *jump_src);
58 private:
59    void do_evalue_liveness(LiverangeEvaluator& eval) const override;
60    bool is_equal_to(const Instruction& lhs) const override;
61    void do_print(std::ostream& os) const override;
62 
63    IfElseInstruction *m_jump_src;
64 };
65 
66 class IfElseEndInstruction : public IfElseInstruction {
67 public:
68    IfElseEndInstruction();
69 private:
70    void do_evalue_liveness(LiverangeEvaluator& eval) const override;
71    bool is_equal_to(const Instruction& lhs) const override;
72    void do_print(std::ostream& os) const override;
73 };
74 
75 class LoopBeginInstruction: public CFInstruction {
76 public:
77    LoopBeginInstruction();
78 private:
79    void do_evalue_liveness(LiverangeEvaluator& eval) const override;
80    bool is_equal_to(const Instruction& lhs) const override;
81    void do_print(std::ostream& os) const override;
82 };
83 
84 class LoopEndInstruction: public CFInstruction {
85 public:
86    LoopEndInstruction(LoopBeginInstruction *start);
87 private:
88    void do_evalue_liveness(LiverangeEvaluator& eval) const override;
89    bool is_equal_to(const Instruction& lhs) const override;
90    void do_print(std::ostream& os) const override;
91    LoopBeginInstruction *m_start;
92 };
93 
94 class LoopBreakInstruction: public CFInstruction {
95 public:
96    LoopBreakInstruction();
97 private:
98    void do_evalue_liveness(LiverangeEvaluator& eval) const override;
99    bool is_equal_to(const Instruction& lhs) const override;
100    void do_print(std::ostream& os) const override;
101 };
102 
103 class LoopContInstruction: public CFInstruction {
104 public:
105    LoopContInstruction();
106 private:
107    bool is_equal_to(const Instruction& lhs) const override;
108    void do_print(std::ostream& os) const override;
109 };
110 
111 }
112 
113 #endif // SFN_IFELSEINSTRUCTION_H
114