source: src/ResolvExpr/ConversionCost.cc@ bdc8591

Last change on this file since bdc8591 was 76fe046, checked in by JiadaL <j82liang@…>, 19 months ago

Remove conversion part of the EnumPosType. It can be resolved by the current unifier
  • Property mode set to 100644
File size: 28.8 KB
RevLine 
[a32b204]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[a436947]7// ConversionCost.cc --
[a32b204]8//
9// Author : Richard C. Bilson
10// Created On : Sun May 17 07:06:19 2015
[fb2bde4]11// Last Modified By : Andrew Beach
[1d17939]12// Last Modified On : Wed Jul 29 16:11:00 2020
[cf32116]13// Update Count : 28
[a32b204]14//
[51b73452]15
16#include "ConversionCost.h"
[ea6332d]17
18#include <cassert> // for assert
19#include <list> // for list, list<>::const_iterator
20#include <string> // for operator==, string
21
22#include "ResolvExpr/Cost.h" // for Cost
[5bf3976]23#include "ResolvExpr/Unify.h" // for typesCompatibleIgnoreQualifiers
24#include "ResolvExpr/PtrsAssignable.hpp" // for ptrsAssignable
[ef1da0e2]25
[51b73452]26namespace ResolvExpr {
[b46e3bd]27
[5ccb10d]28#if 0
29#define PRINT(x) x
30#else
31#define PRINT(x)
32#endif
[ada4575]33
[e15853c]34 // GENERATED START, DO NOT EDIT
[6fd1955]35 // GENERATED BY BasicTypes-gen.cc
[cdcddfe1]36 /* EXTENDED INTEGRAL RANK HIERARCHY (root to leaves)
[e15853c]37 _Bool
[7870799]38 char signed char unsigned char
39 signed short int unsigned short int
40 signed int unsigned int
41 signed long int unsigned long int
42 signed long long int unsigned long long int
43 __int128 unsigned __int128
44 _Float16 _Float16 _Complex
45 _Float32 _Float32 _Complex
46 float float _Complex
47 _Float32x _Float32x _Complex
48 _Float64 _Float64 _Complex
49 double double _Complex
50 _Float64x _Float64x _Complex
[e15853c]51 __float80
[7870799]52 _Float128 _Float128 _Complex
[e15853c]53 __float128
[7870799]54 long double long double _Complex
55 _Float128x _Float128x _Complex
[cdcddfe1]56 */
[e15853c]57 // GENERATED END
[cdcddfe1]58
[e15853c]59 // GENERATED START, DO NOT EDIT
[6fd1955]60 // GENERATED BY BasicTypes-gen.cc
[7d55e4d]61 static const int costMatrix[ast::BasicType::NUMBER_OF_BASIC_TYPES][ast::BasicType::NUMBER_OF_BASIC_TYPES] = { // path length from root to node
[3a55d9f]62 /* B C SC UC SI SUI I UI LI LUI LLI LLUI IB UIB _FH _FH _F _FC F FC _FX _FXC FD _FDC D DC F80X_FDXC F80 _FB_FLDC FB LD LDC _FBX_FLDXC */
63 /* B */ { 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 17, 16, 18, 17, },
64 /* C */ { -1, 0, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 16, 15, 17, 16, },
65 /* SC */ { -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 16, 15, 17, 16, },
66 /* UC */ { -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 16, 15, 17, 16, },
67 /* SI */ { -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 15, 14, 16, 15, },
68 /* SUI */ { -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 15, 14, 16, 15, },
69 /* I */ { -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 14, 13, 15, 14, },
70 /* UI */ { -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 14, 13, 15, 14, },
71 /* LI */ { -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 12, 14, 13, },
72 /* LUI */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 12, 14, 13, },
73 /* LLI */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 12, 11, 13, 12, },
74 /* LLUI */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 12, 11, 13, 12, },
75 /* IB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 11, 10, 12, 11, },
76 /* UIB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 11, 10, 12, 11, },
77 /* _FH */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 10, 9, 11, 10, },
78 /* _FH */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 1, -1, 2, -1, 3, -1, 4, -1, 5, -1, 6, -1, -1, 7, -1, -1, 8, -1, 9, },
79 /* _F */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 9, 8, 10, 9, },
80 /* _FC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 1, -1, 2, -1, 3, -1, 4, -1, 5, -1, -1, 6, -1, -1, 7, -1, 8, },
81 /* F */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 8, 7, 9, 8, },
82 /* FC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 1, -1, 2, -1, 3, -1, 4, -1, -1, 5, -1, -1, 6, -1, 7, },
83 /* _FX */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 6, 8, 7, },
84 /* _FXC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 1, -1, 2, -1, 3, -1, -1, 4, -1, -1, 5, -1, 6, },
85 /* FD */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 5, 7, 6, },
86 /* _FDC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 1, -1, 2, -1, -1, 3, -1, -1, 4, -1, 5, },
87 /* D */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, 4, 5, 4, 6, 5, },
88 /* DC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 1, -1, -1, 2, -1, -1, 3, -1, 4, },
89 /* F80X */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 4, 3, 5, 4, },
90 /* _FDXC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, 1, -1, -1, 2, -1, 3, },
91 /* F80 */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 0, 1, 2, 2, 3, 3, 4, 4, },
92 /* _FB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, 2, 3, 3, },
93 /* _FLDC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, 1, -1, 2, },
94 /* FB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 0, 1, 2, 2, 3, },
95 /* LD */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, 2, },
96 /* LDC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 1, },
97 /* _FBX */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, },
[ef5b828]98 /* _FLDXC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, },
[e15853c]99 }; // costMatrix
[1c9568f0]100 static const int maxIntCost = 15;
[e15853c]101 // GENERATED END
[cdcddfe1]102 static_assert(
[4ac402d]103 sizeof(costMatrix)/sizeof(costMatrix[0][0]) == ast::BasicType::NUMBER_OF_BASIC_TYPES * ast::BasicType::NUMBER_OF_BASIC_TYPES,
[cdcddfe1]104 "Missing row in the cost matrix"
105 );
106
[e15853c]107 // GENERATED START, DO NOT EDIT
[6fd1955]108 // GENERATED BY BasicTypes-gen.cc
[7d55e4d]109 static const int signMatrix[ast::BasicType::NUMBER_OF_BASIC_TYPES][ast::BasicType::NUMBER_OF_BASIC_TYPES] = { // number of sign changes in safe conversion
[3a55d9f]110 /* B C SC UC SI SUI I UI LI LUI LLI LLUI IB UIB _FH _FH _F _FC F FC _FX _FXC FD _FDC D DC F80X_FDXC F80 _FB_FLDC FB LD LDC _FBX_FLDXC */
111 /* B */ { 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
112 /* C */ { -1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
113 /* SC */ { -1, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
114 /* UC */ { -1, -1, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
115 /* SI */ { -1, -1, -1, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
116 /* SUI */ { -1, -1, -1, -1, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
117 /* I */ { -1, -1, -1, -1, -1, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
118 /* UI */ { -1, -1, -1, -1, -1, -1, -1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
119 /* LI */ { -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
120 /* LUI */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
121 /* LLI */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
122 /* LLUI */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
123 /* IB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
124 /* UIB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
125 /* _FH */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
126 /* _FH */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, -1, 0, -1, -1, 0, -1, 0, },
127 /* _F */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
128 /* _FC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, -1, 0, -1, -1, 0, -1, 0, },
129 /* F */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
130 /* FC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, -1, 0, -1, -1, 0, -1, 0, },
131 /* _FX */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
132 /* _FXC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, 0, -1, 0, -1, -1, 0, -1, -1, 0, -1, 0, },
133 /* FD */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
134 /* _FDC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, 0, -1, -1, 0, -1, -1, 0, -1, 0, },
135 /* D */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
136 /* DC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, 0, -1, -1, 0, -1, 0, },
137 /* F80X */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
138 /* _FDXC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, 0, -1, -1, 0, -1, 0, },
139 /* F80 */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
140 /* _FB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, },
141 /* _FLDC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, 0, -1, 0, },
142 /* FB */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, },
143 /* LD */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, },
144 /* LDC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, },
145 /* _FBX */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, },
[ef5b828]146 /* _FLDXC */ { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, },
[e15853c]147 }; // signMatrix
148 // GENERATED END
[cdcddfe1]149 static_assert(
[4ac402d]150 sizeof(signMatrix)/sizeof(signMatrix[0][0]) == ast::BasicType::NUMBER_OF_BASIC_TYPES * ast::BasicType::NUMBER_OF_BASIC_TYPES,
[cdcddfe1]151 "Missing row in the sign matrix"
152 );
[a32b204]153
[cf32116]154namespace {
155 int localPtrsAssignable(const ast::Type * t1, const ast::Type * t2,
156 const ast::SymbolTable &, const ast::TypeEnvironment & env ) {
157 return ptrsAssignable( t1, t2, env );
158 }
[fb2bde4]159}
160
161Cost conversionCost(
[cf32116]162 const ast::Type * src, const ast::Type * dst, bool srcIsLvalue,
163 const ast::SymbolTable & symtab, const ast::TypeEnvironment & env
[fb2bde4]164) {
165 if ( const ast::TypeInstType * inst = dynamic_cast< const ast::TypeInstType * >( dst ) ) {
[3e5dd913]166 if ( const ast::EqvClass * eqv = env.lookup( *inst ) ) {
[fb2bde4]167 if ( eqv->bound ) {
[cf32116]168 return conversionCost(src, eqv->bound, srcIsLvalue, symtab, env );
[fb2bde4]169 } else {
170 return Cost::infinity;
171 }
172 } else if ( const ast::NamedTypeDecl * named = symtab.lookupType( inst->name ) ) {
173 const ast::TypeDecl * type = dynamic_cast< const ast::TypeDecl * >( named );
174 assertf( type, "Unexpected typedef." );
175 if ( type->base ) {
[cf32116]176 return conversionCost( src, type->base, srcIsLvalue, symtab, env ) + Cost::safe;
[fb2bde4]177 }
178 }
179 }
[251ce80]180 if ( typesCompatibleIgnoreQualifiers( src, dst, env ) ) {
[9d5089e]181 return Cost::zero;
[fb2bde4]182 } else if ( dynamic_cast< const ast::VoidType * >( dst ) ) {
183 return Cost::safe;
184 } else if ( const ast::ReferenceType * refType =
185 dynamic_cast< const ast::ReferenceType * >( dst ) ) {
[cf32116]186 return convertToReferenceCost( src, refType, srcIsLvalue, symtab, env, localPtrsAssignable );
[fb2bde4]187 } else {
[0bd3faf]188 return ast::Pass<ConversionCost>::read( src, dst, srcIsLvalue, symtab, env, conversionCost );
[fb2bde4]189 }
190}
191
[cf32116]192static Cost convertToReferenceCost( const ast::Type * src, const ast::Type * dst, bool srcIsLvalue,
[0f19f5e5]193 int diff, const ast::SymbolTable & symtab, const ast::TypeEnvironment & env,
[cf32116]194 PtrsCalculation func ) {
[fb2bde4]195 if ( 0 < diff ) {
196 Cost cost = convertToReferenceCost(
[cf32116]197 strict_dynamic_cast< const ast::ReferenceType * >( src )->base, dst,
198 srcIsLvalue, (diff - 1), symtab, env, func );
[fb2bde4]199 cost.incReference();
200 return cost;
201 } else if ( diff < -1 ) {
202 Cost cost = convertToReferenceCost(
203 src, strict_dynamic_cast< const ast::ReferenceType * >( dst )->base,
[cf32116]204 srcIsLvalue, (diff + 1), symtab, env, func );
[fb2bde4]205 cost.incReference();
206 return cost;
207 } else if ( 0 == diff ) {
208 const ast::ReferenceType * srcAsRef = dynamic_cast< const ast::ReferenceType * >( src );
209 const ast::ReferenceType * dstAsRef = dynamic_cast< const ast::ReferenceType * >( dst );
210 if ( srcAsRef && dstAsRef ) {
211 ast::CV::Qualifiers tq1 = srcAsRef->base->qualifiers;
212 ast::CV::Qualifiers tq2 = dstAsRef->base->qualifiers;
213 if ( tq1 <= tq2 && typesCompatibleIgnoreQualifiers(
[251ce80]214 srcAsRef->base, dstAsRef->base, env ) ) {
[fb2bde4]215 if ( tq1 == tq2 ) {
216 return Cost::zero;
217 } else {
218 return Cost::safe;
219 }
220 } else {
221 int assignResult = func( srcAsRef->base, dstAsRef->base, symtab, env );
222 if ( 0 < assignResult ) {
223 return Cost::safe;
224 } else if ( assignResult < 0 ) {
225 return Cost::unsafe;
226 }
227 }
228 } else {
[0bd3faf]229 return ast::Pass<ConversionCost>::read( src, dst, srcIsLvalue, symtab, env, conversionCost );
[fb2bde4]230 }
231 } else {
232 assert( -1 == diff );
233 const ast::ReferenceType * dstAsRef = dynamic_cast< const ast::ReferenceType * >( dst );
234 assert( dstAsRef );
[251ce80]235 if ( typesCompatibleIgnoreQualifiers( src, dstAsRef->base, env ) ) {
[cf32116]236 if ( srcIsLvalue ) {
[fb2bde4]237 if ( src->qualifiers == dstAsRef->base->qualifiers ) {
238 return Cost::reference;
239 } else if ( src->qualifiers < dstAsRef->base->qualifiers ) {
240 return Cost::safe;
241 } else {
242 return Cost::unsafe;
243 }
244 } else if ( dstAsRef->base->is_const() ) {
245 return Cost::safe;
246 } else {
247 return Cost::unsafe;
248 }
249 }
250 }
251 return Cost::infinity;
252}
253
254Cost convertToReferenceCost( const ast::Type * src, const ast::ReferenceType * dst,
[cf32116]255 bool srcIsLvalue, const ast::SymbolTable & symtab, const ast::TypeEnvironment & env,
256 PtrsCalculation func ) {
[fb2bde4]257 int sdepth = src->referenceDepth(), ddepth = dst->referenceDepth();
[cf32116]258 return convertToReferenceCost( src, dst, srcIsLvalue, sdepth - ddepth, symtab, env, func );
[fb2bde4]259}
260
[0bd3faf]261void ConversionCost::postvisit( const ast::VoidType * voidType ) {
[fb2bde4]262 (void)voidType;
263 cost = Cost::infinity;
264}
265
[0bd3faf]266void ConversionCost::conversionCostFromBasicToBasic( const ast::BasicType * src, const ast::BasicType* dest ) {
[fc134a48]267 int tableResult = costMatrix[ src->kind ][ dest->kind ];
268 if ( tableResult == -1 ) {
269 cost = Cost::unsafe;
270 } else {
271 cost = Cost::zero;
272 cost.incSafe( tableResult );
273 cost.incSign( signMatrix[ src->kind ][ dest->kind ] );
274 }
275}
276
[0bd3faf]277void ConversionCost::postvisit( const ast::BasicType * basicType ) {
[fb2bde4]278 if ( const ast::BasicType * dstAsBasic = dynamic_cast< const ast::BasicType * >( dst ) ) {
[fc134a48]279 conversionCostFromBasicToBasic( basicType, dstAsBasic );
[0522ebe]280 }
281 else if ( const ast::EnumInstType * enumInst = dynamic_cast< const ast::EnumInstType * >( dst ) ) {
[c75b30a]282 auto enumDecl = enumInst->base;
[0522ebe]283 if ( enumDecl->base.get() ) {
284 // cost = costCalc( basicType, baseType, srcIsLvalue, symtab, env );
285 // cost.incUnsafe();
286 cost = Cost::infinity;
[fb2bde4]287 } else {
[fc134a48]288 cost = Cost::unsafe;
[fb2bde4]289 }
[00eaeb8]290 } else if ( dynamic_cast< const ast::EnumPosType *>(dst) ) {
291 static ast::ptr<ast::BasicType> integer = { new ast::BasicType( ast::BasicType::SignedInt ) };
292 cost = costCalc( basicType, integer, srcIsLvalue, symtab, env );
[fb2bde4]293 }
294}
295
[0bd3faf]296void ConversionCost::postvisit( const ast::PointerType * pointerType ) {
[fb2bde4]297 if ( const ast::PointerType * dstAsPtr = dynamic_cast< const ast::PointerType * >( dst ) ) {
298 ast::CV::Qualifiers tq1 = pointerType->base->qualifiers;
299 ast::CV::Qualifiers tq2 = dstAsPtr->base->qualifiers;
300 if ( tq1 <= tq2 && typesCompatibleIgnoreQualifiers(
[251ce80]301 pointerType->base, dstAsPtr->base, env ) ) {
[fb2bde4]302 if ( tq1 == tq2 ) {
303 cost = Cost::zero;
304 } else {
305 cost = Cost::safe;
306 }
[ef1da0e2]307 }
308 /*
309 else if ( const ast::FunctionType * dstFunc = dstAsPtr->base.as<ast::FunctionType>()) {
310 if (const ast::FunctionType * srcFunc = pointerType->base.as<ast::FunctionType>()) {
311 if (dstFunc->params.empty() && dstFunc->isVarArgs ) {
312 cost = Cost::unsafe; // assign any function to variadic fptr
313 }
314 }
315 else {
316 ast::AssertionSet need, have; // unused
317 ast::OpenVarSet open;
318 env.extractOpenVars(open);
319 ast::TypeEnvironment tenv = env;
320 if ( unify(dstAsPtr->base, pointerType->base, tenv, need, have, open, symtab) ) {
321 cost = Cost::safe;
322 }
323 }
324 // else infinity
325 }
326 */
327 else {
[fb2bde4]328 int assignResult = ptrsAssignable( pointerType->base, dstAsPtr->base, env );
329 if ( 0 < assignResult && tq1 <= tq2 ) {
330 if ( tq1 == tq2 ) {
331 cost = Cost::safe;
332 } else {
333 cost = Cost::safe + Cost::safe;
334 }
335 } else if ( assignResult < 0 ) {
336 cost = Cost::unsafe;
337 } // else Cost::infinity
338 }
339 }
340}
341
[0bd3faf]342void ConversionCost::postvisit( const ast::ArrayType * arrayType ) {
[fb2bde4]343 (void)arrayType;
344}
345
[0bd3faf]346void ConversionCost::postvisit( const ast::ReferenceType * refType ) {
[fb2bde4]347 assert( nullptr == dynamic_cast< const ast::ReferenceType * >( dst ) );
348
[cf32116]349 cost = costCalc( refType->base, dst, srcIsLvalue, symtab, env );
[46da46b]350
351 // xxx - should qualifiers be considered in pass-by-value?
352 /*
[fb2bde4]353 if ( refType->base->qualifiers == dst->qualifiers ) {
354 cost.incReference();
355 } else if ( refType->base->qualifiers < dst->qualifiers ) {
356 cost.incSafe();
357 } else {
358 cost.incUnsafe();
359 }
[46da46b]360 */
361 cost.incReference();
[fb2bde4]362}
363
[0bd3faf]364void ConversionCost::postvisit( const ast::FunctionType * functionType ) {
[fb2bde4]365 (void)functionType;
366}
367
[647d633]368void ConversionCost::postvisit( const ast::EnumInstType * ) {
[c75b30a]369 static ast::ptr<ast::BasicType> integer = { new ast::BasicType( ast::BasicType::SignedInt ) };
370 cost = costCalc( integer, dst, srcIsLvalue, symtab, env );
[fb2bde4]371 if ( cost < Cost::unsafe ) {
372 cost.incSafe();
373 }
374}
375
[bbf2cb1]376void ConversionCost::postvisit( const ast::EnumPosType * src ) {
[647d633]377 if ( dynamic_cast<const ast::EnumPosType *>( dst ) ) {
[bbf2cb1]378 // cost = costCalc( src->instance, dstBase->instance, srcIsLvalue, symtab, env );
379 // if ( cost < Cost::unsafe ) cost.incSafe();
[00eaeb8]380 cost = Cost::zero;
[76fe046]381 } else if ( auto dstBase = dynamic_cast<const ast::EnumInstType *>( dst ) ) {
382 cost = costCalc( src->instance, dstBase, srcIsLvalue, symtab, env );
383 if ( cost < Cost::unsafe ) cost.incSafe();
384 } else {
[00eaeb8]385 static ast::ptr<ast::BasicType> integer = { new ast::BasicType( ast::BasicType::SignedInt ) };
386 cost = costCalc( integer, dst, srcIsLvalue, symtab, env );
387 if ( cost < Cost::unsafe ) {
388 cost.incSafe();
389 }
[0522ebe]390 }
[00eaeb8]391
[0522ebe]392}
393
[0bd3faf]394void ConversionCost::postvisit( const ast::TraitInstType * traitInstType ) {
[fb2bde4]395 (void)traitInstType;
396}
397
[0bd3faf]398void ConversionCost::postvisit( const ast::TypeInstType * typeInstType ) {
[3e5dd913]399 if ( const ast::EqvClass * eqv = env.lookup( *typeInstType ) ) {
[cf32116]400 cost = costCalc( eqv->bound, dst, srcIsLvalue, symtab, env );
[fb2bde4]401 } else if ( const ast::TypeInstType * dstAsInst =
402 dynamic_cast< const ast::TypeInstType * >( dst ) ) {
[3e5dd913]403 if ( *typeInstType == *dstAsInst ) {
[fb2bde4]404 cost = Cost::zero;
405 }
406 } else if ( const ast::NamedTypeDecl * namedType = symtab.lookupType( typeInstType->name ) ) {
407 const ast::TypeDecl * type = dynamic_cast< const ast::TypeDecl * >( namedType );
408 assertf( type, "Unexpected typedef.");
409 if ( type->base ) {
[cf32116]410 cost = costCalc( type->base, dst, srcIsLvalue, symtab, env ) + Cost::safe;
[fb2bde4]411 }
412 }
413}
414
[0bd3faf]415void ConversionCost::postvisit( const ast::TupleType * tupleType ) {
[fb2bde4]416 Cost c = Cost::zero;
417 if ( const ast::TupleType * dstAsTuple = dynamic_cast< const ast::TupleType * >( dst ) ) {
418 auto srcIt = tupleType->types.begin();
419 auto dstIt = dstAsTuple->types.begin();
420 auto srcEnd = tupleType->types.end();
421 auto dstEnd = dstAsTuple->types.end();
422 while ( srcIt != srcEnd && dstIt != dstEnd ) {
[cf32116]423 Cost newCost = costCalc( * srcIt++, * dstIt++, srcIsLvalue, symtab, env );
[fb2bde4]424 if ( newCost == Cost::infinity ) {
425 return;
426 }
427 c += newCost;
428 }
429 if ( dstIt != dstEnd ) {
430 cost = Cost::infinity;
431 } else {
432 cost = c;
433 }
434 }
435}
436
[0bd3faf]437void ConversionCost::postvisit( const ast::VarArgsType * varArgsType ) {
[fb2bde4]438 (void)varArgsType;
439 if ( dynamic_cast< const ast::VarArgsType * >( dst ) ) {
440 cost = Cost::zero;
441 }
442}
443
[0bd3faf]444void ConversionCost::postvisit( const ast::ZeroType * zeroType ) {
[fb2bde4]445 (void)zeroType;
446 if ( dynamic_cast< const ast::ZeroType * >( dst ) ) {
447 cost = Cost::zero;
448 } else if ( const ast::BasicType * dstAsBasic =
449 dynamic_cast< const ast::BasicType * >( dst ) ) {
450 int tableResult = costMatrix[ ast::BasicType::SignedInt ][ dstAsBasic->kind ];
451 if ( -1 == tableResult ) {
452 cost = Cost::unsafe;
453 } else {
454 cost = Cost::zero;
455 cost.incSafe( tableResult + 1 );
456 cost.incSign( signMatrix[ ast::BasicType::SignedInt ][ dstAsBasic->kind ] );
457 }
[46da46b]458 // this has the effect of letting any expr such as x+0, x+1 to be typed
459 // the same as x, instead of at least int. are we willing to sacrifice this little
460 // bit of coherence with C?
461 // TODO: currently this does not work when no zero/one overloads exist. Find a fix for it.
462 // cost = Cost::zero;
[2f98fb2]463 } else if ( dynamic_cast< const ast::PointerType * >( dst ) ) {
464 cost = Cost::zero;
465 // +1 for zero_t ->, +1 for disambiguation
466 cost.incSafe( maxIntCost + 2 );
[46da46b]467 // assuming 0p is supposed to be used for pointers?
[fb2bde4]468 }
469}
470
[0bd3faf]471void ConversionCost::postvisit( const ast::OneType * oneType ) {
[fb2bde4]472 (void)oneType;
473 if ( dynamic_cast< const ast::OneType * >( dst ) ) {
474 cost = Cost::zero;
475 } else if ( const ast::BasicType * dstAsBasic =
[0bd3faf]476 dynamic_cast< const ast::BasicType * >( dst ) ) {
[fb2bde4]477 int tableResult = costMatrix[ ast::BasicType::SignedInt ][ dstAsBasic->kind ];
478 if ( -1 == tableResult ) {
479 cost = Cost::unsafe;
480 } else {
481 cost = Cost::zero;
482 cost.incSafe( tableResult + 1 );
483 cost.incSign( signMatrix[ ast::BasicType::SignedInt ][ dstAsBasic->kind ] );
484 }
[9d5089e]485 }
[fb2bde4]486}
[0bd3faf]487
488// size_t ConversionCost::traceId = Stats::Heap::new_stacktrace_id("ConversionCost");
[fb2bde4]489
[51b73452]490} // namespace ResolvExpr
[a32b204]491
492// Local Variables: //
493// tab-width: 4 //
494// mode: c++ //
495// compile-command: "make install" //
496// End: //
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