1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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24
25 #ifndef SHARE_JVMCI_JVMCI_GLOBALS_HPP
26 #define SHARE_JVMCI_JVMCI_GLOBALS_HPP
27
28 #include "runtime/flags/jvmFlag.hpp"
29
30 class fileStream;
31
32 //
33 // Defines all global flags used by the JVMCI compiler. Only flags that need
34 // to be accessible to the JVMCI C++ code should be defined here.
35 //
36 #define JVMCI_FLAGS(develop, \
37 develop_pd, \
38 product, \
39 product_pd, \
40 diagnostic, \
41 diagnostic_pd, \
42 experimental, \
43 notproduct, \
44 range, \
45 constraint, \
46 writeable) \
47 \
48 experimental(bool, EnableJVMCI, false, \
49 "Enable JVMCI") \
50 \
51 experimental(bool, EnableJVMCIProduct, false, \
52 "Allow JVMCI to be used in product mode") \
53 \
54 experimental(bool, UseJVMCICompiler, false, \
55 "Use JVMCI as the default compiler") \
56 \
57 experimental(bool, JVMCIPrintProperties, false, \
58 "Prints properties used by the JVMCI compiler and exits") \
59 \
60 experimental(bool, BootstrapJVMCI, false, \
61 "Bootstrap JVMCI before running Java main method. This " \
62 "initializes the compile queue with a small set of methods " \
63 "and processes the queue until it is empty. Combining this with " \
64 "-XX:-TieredCompilation makes JVMCI compile more of itself.") \
65 \
66 experimental(bool, EagerJVMCI, false, \
67 "Force eager JVMCI initialization") \
68 \
69 experimental(bool, PrintBootstrap, true, \
70 "Print JVMCI bootstrap progress and summary") \
71 \
72 experimental(intx, JVMCIThreads, 1, \
73 "Force number of JVMCI compiler threads to use. Ignored if " \
74 "UseJVMCICompiler is false.") \
75 range(1, max_jint) \
76 \
77 experimental(intx, JVMCIHostThreads, 1, \
78 "Force number of C1 compiler threads. Ignored if " \
79 "UseJVMCICompiler is false.") \
80 range(1, max_jint) \
81 \
82 NOT_COMPILER2(product(intx, MaxVectorSize, 64, \
83 "Max vector size in bytes, " \
84 "actual size could be less depending on elements type")) \
85 \
86 NOT_COMPILER2(product(bool, ReduceInitialCardMarks, true, \
87 "Defer write barriers of young objects")) \
88 \
89 experimental(intx, JVMCITraceLevel, 0, \
90 "Trace level for JVMCI: " \
91 "1 means emit a message for each CompilerToVM call," \
92 "levels greater than 1 provide progressively greater detail") \
93 \
94 experimental(intx, JVMCICounterSize, 0, \
95 "Reserved size for benchmark counters") \
96 range(0, max_jint) \
97 \
98 experimental(bool, JVMCICountersExcludeCompiler, true, \
99 "Exclude JVMCI compiler threads from benchmark counters") \
100 \
101 develop(bool, JVMCIUseFastLocking, true, \
102 "Use fast inlined locking code") \
103 \
104 experimental(intx, JVMCINMethodSizeLimit, (80*K)*wordSize, \
105 "Maximum size of a compiled method.") \
106 \
107 experimental(intx, MethodProfileWidth, 0, \
108 "Number of methods to record in call profile") \
109 \
110 experimental(ccstr, JVMCILibPath, NULL, \
111 "LD path for loading the JVMCI shared library") \
112 \
113 experimental(ccstr, JVMCILibDumpJNIConfig, NULL, \
114 "Dumps to the given file a description of the classes, fields " \
115 "and methods the JVMCI shared library must provide") \
116 \
117 experimental(bool, UseJVMCINativeLibrary, false, \
118 "Execute JVMCI Java code from a shared library " \
119 "instead of loading it from class files and executing it " \
120 "on the HotSpot heap") \
121 \
122 NOT_COMPILER2(diagnostic(bool, UseMultiplyToLenIntrinsic, false, \
123 "Enables intrinsification of BigInteger.multiplyToLen()")) \
124 \
125 NOT_COMPILER2(diagnostic(bool, UseSquareToLenIntrinsic, false, \
126 "Enables intrinsification of BigInteger.squareToLen()")) \
127 \
128 NOT_COMPILER2(diagnostic(bool, UseMulAddIntrinsic, false, \
129 "Enables intrinsification of BigInteger.mulAdd()")) \
130 \
131 NOT_COMPILER2(diagnostic(bool, UseMontgomeryMultiplyIntrinsic, false, \
132 "Enables intrinsification of BigInteger.montgomeryMultiply()")) \
133 \
134 NOT_COMPILER2(diagnostic(bool, UseMontgomerySquareIntrinsic, false, \
135 "Enables intrinsification of BigInteger.montgomerySquare()"))
136
137 // The base name for the shared library containing the JVMCI based compiler
138 #define JVMCI_SHARED_LIBRARY_NAME "jvmcicompiler"
139
140 class JVMCIGlobals {
141 private:
142 static fileStream* _jni_config_file;
143 public:
144
145 // Returns true if jvmci flags are consistent. If not consistent,
146 // an error message describing the inconsistency is printed before
147 // returning false.
148 static bool check_jvmci_flags_are_consistent();
149
150 // Convert JVMCI experimental flags to product
151 static bool enable_jvmci_product_mode(JVMFlag::Flags);
152
153 // Check and exit VM with error if selected GC is not supported by JVMCI.
154 static void check_jvmci_supported_gc();
155
156 static fileStream* get_jni_config_file() { return _jni_config_file; }
157 };
158 #endif // SHARE_JVMCI_JVMCI_GLOBALS_HPP