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. This alters a subset of "\
53 "JVMCI flags to be non-experimental, defaults UseJVMCICompiler " \
54 "to true and defaults UseJVMCINativeLibrary to true if a JVMCI " \
55 "native library is available.") \
56 \
57 experimental(bool, UseJVMCICompiler, false, \
58 "Use JVMCI as the default compiler. Defaults to true if " \
59 "EnableJVMCIProduct is true.") \
60 \
61 experimental(bool, JVMCIPrintProperties, false, \
62 "Prints properties used by the JVMCI compiler and exits") \
63 \
64 experimental(bool, BootstrapJVMCI, false, \
65 "Bootstrap JVMCI before running Java main method. This " \
66 "initializes the compile queue with a small set of methods " \
67 "and processes the queue until it is empty. Combining this with " \
68 "-XX:-TieredCompilation makes JVMCI compile more of itself.") \
69 \
70 experimental(bool, EagerJVMCI, false, \
71 "Force eager JVMCI initialization") \
72 \
73 experimental(bool, PrintBootstrap, true, \
74 "Print JVMCI bootstrap progress and summary") \
75 \
76 experimental(intx, JVMCIThreads, 1, \
77 "Force number of JVMCI compiler threads to use. Ignored if " \
78 "UseJVMCICompiler is false.") \
79 range(1, max_jint) \
80 \
81 experimental(intx, JVMCIHostThreads, 1, \
82 "Force number of C1 compiler threads. Ignored if " \
83 "UseJVMCICompiler is false.") \
84 range(1, max_jint) \
85 \
86 NOT_COMPILER2(product(intx, MaxVectorSize, 64, \
87 "Max vector size in bytes, " \
88 "actual size could be less depending on elements type")) \
89 \
90 NOT_COMPILER2(product(bool, ReduceInitialCardMarks, true, \
91 "Defer write barriers of young objects")) \
92 \
93 experimental(intx, JVMCITraceLevel, 0, \
94 "Trace level for JVMCI: " \
95 "1 means emit a message for each CompilerToVM call," \
96 "levels greater than 1 provide progressively greater detail") \
97 \
98 experimental(intx, JVMCICounterSize, 0, \
99 "Reserved size for benchmark counters") \
100 range(0, max_jint) \
101 \
102 experimental(bool, JVMCICountersExcludeCompiler, true, \
103 "Exclude JVMCI compiler threads from benchmark counters") \
104 \
105 develop(bool, JVMCIUseFastLocking, true, \
106 "Use fast inlined locking code") \
107 \
108 experimental(intx, JVMCINMethodSizeLimit, (80*K)*wordSize, \
109 "Maximum size of a compiled method.") \
110 \
111 experimental(intx, MethodProfileWidth, 0, \
112 "Number of methods to record in call profile") \
113 \
114 experimental(ccstr, JVMCILibPath, NULL, \
115 "LD path for loading the JVMCI shared library") \
116 \
117 experimental(ccstr, JVMCILibDumpJNIConfig, NULL, \
118 "Dumps to the given file a description of the classes, fields " \
119 "and methods the JVMCI shared library must provide") \
120 \
121 experimental(bool, UseJVMCINativeLibrary, false, \
122 "Execute JVMCI Java code from a shared library " \
123 "instead of loading it from class files and executing it " \
124 "on the HotSpot heap. Defaults to true if EnableJVMCIProduct is " \
125 "true and a JVMCI native library is available.")\
126 \
127 NOT_COMPILER2(diagnostic(bool, UseMultiplyToLenIntrinsic, false, \
128 "Enables intrinsification of BigInteger.multiplyToLen()")) \
129 \
130 NOT_COMPILER2(diagnostic(bool, UseSquareToLenIntrinsic, false, \
131 "Enables intrinsification of BigInteger.squareToLen()")) \
132 \
133 NOT_COMPILER2(diagnostic(bool, UseMulAddIntrinsic, false, \
134 "Enables intrinsification of BigInteger.mulAdd()")) \
135 \
136 NOT_COMPILER2(diagnostic(bool, UseMontgomeryMultiplyIntrinsic, false, \
137 "Enables intrinsification of BigInteger.montgomeryMultiply()")) \
138 \
139 NOT_COMPILER2(diagnostic(bool, UseMontgomerySquareIntrinsic, false, \
140 "Enables intrinsification of BigInteger.montgomerySquare()"))
141
142 // The base name for the shared library containing the JVMCI based compiler
143 #define JVMCI_SHARED_LIBRARY_NAME "jvmcicompiler"
144
145 class JVMCIGlobals {
146 private:
147 static fileStream* _jni_config_file;
148 public:
149
150 // Returns true if jvmci flags are consistent. If not consistent,
151 // an error message describing the inconsistency is printed before
152 // returning false.
153 static bool check_jvmci_flags_are_consistent();
154
155 // Convert JVMCI experimental flags to product
156 static bool enable_jvmci_product_mode(JVMFlag::Flags);
157
158 // Check and exit VM with error if selected GC is not supported by JVMCI.
159 static void check_jvmci_supported_gc();
160
161 static fileStream* get_jni_config_file() { return _jni_config_file; }
162 };
163 #endif // SHARE_JVMCI_JVMCI_GLOBALS_HPP