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1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "src/compiler/operator.h"
6 
7 #include <limits>
8 
9 namespace v8 {
10 namespace internal {
11 namespace compiler {
12 
13 namespace {
14 
15 template <typename N>
CheckRange(size_t val)16 V8_INLINE N CheckRange(size_t val) {
17   // The getters on Operator for input and output counts currently return int.
18   // Thus check that the given value fits in the integer range.
19   // TODO(titzer): Remove this check once the getters return size_t.
20   CHECK_LE(val, std::min(static_cast<size_t>(std::numeric_limits<N>::max()),
21                          static_cast<size_t>(kMaxInt)));
22   return static_cast<N>(val);
23 }
24 
25 }  // namespace
26 
Operator(Opcode opcode,Properties properties,const char * mnemonic,size_t value_in,size_t effect_in,size_t control_in,size_t value_out,size_t effect_out,size_t control_out)27 Operator::Operator(Opcode opcode, Properties properties, const char* mnemonic,
28                    size_t value_in, size_t effect_in, size_t control_in,
29                    size_t value_out, size_t effect_out, size_t control_out)
30     : mnemonic_(mnemonic),
31       opcode_(opcode),
32       properties_(properties),
33       value_in_(CheckRange<uint32_t>(value_in)),
34       effect_in_(CheckRange<uint32_t>(effect_in)),
35       control_in_(CheckRange<uint32_t>(control_in)),
36       value_out_(CheckRange<uint32_t>(value_out)),
37       effect_out_(CheckRange<uint8_t>(effect_out)),
38       control_out_(CheckRange<uint32_t>(control_out)) {}
39 
operator <<(std::ostream & os,const Operator & op)40 std::ostream& operator<<(std::ostream& os, const Operator& op) {
41   op.PrintTo(os);
42   return os;
43 }
44 
PrintToImpl(std::ostream & os,PrintVerbosity verbose) const45 void Operator::PrintToImpl(std::ostream& os, PrintVerbosity verbose) const {
46   os << mnemonic();
47 }
48 
PrintPropsTo(std::ostream & os) const49 void Operator::PrintPropsTo(std::ostream& os) const {
50   std::string separator = "";
51 
52 #define PRINT_PROP_IF_SET(name)         \
53   if (HasProperty(Operator::k##name)) { \
54     os << separator;                    \
55     os << #name;                        \
56     separator = ", ";                   \
57   }
58   OPERATOR_PROPERTY_LIST(PRINT_PROP_IF_SET)
59 #undef PRINT_PROP_IF_SET
60 }
61 
62 }  // namespace compiler
63 }  // namespace internal
64 }  // namespace v8
65