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 \
47 experimental(bool, EnableJVMCI, false, \
48 "Enable JVMCI") \
49 \
50 experimental(bool, EnableJVMCIProduct, false, \
51 "Allow JVMCI to be used in product mode. This alters a subset of "\
52 "JVMCI flags to be non-experimental, defaults UseJVMCICompiler " \
53 "and EnableJVMCI to true and defaults UseJVMCINativeLibrary " \
54 "to true if a JVMCI native library is available.") \
55 \
56 experimental(bool, UseJVMCICompiler, false, \
57 "Use JVMCI as the default compiler. Defaults to true if " \
58 "EnableJVMCIProduct is true.") \
59 \
60 experimental(bool, JVMCIPrintProperties, false, \
61 "Prints properties used by the JVMCI compiler and exits") \
62 \
63 experimental(bool, BootstrapJVMCI, false, \
64 "Bootstrap JVMCI before running Java main method. This " \
65 "initializes the compile queue with a small set of methods " \
66 "and processes the queue until it is empty. Combining this with " \
67 "-XX:-TieredCompilation makes JVMCI compile more of itself.") \
68 \
69 experimental(bool, EagerJVMCI, false, \
70 "Force eager JVMCI initialization") \
71 \
72 experimental(bool, PrintBootstrap, true, \
73 "Print JVMCI bootstrap progress and summary") \
74 \
75 experimental(intx, JVMCIThreads, 1, \
76 "Force number of JVMCI compiler threads to use. Ignored if " \
77 "UseJVMCICompiler is false.") \
78 range(1, max_jint) \
79 \
80 experimental(intx, JVMCIHostThreads, 1, \
81 "Force number of C1 compiler threads. Ignored if " \
82 "UseJVMCICompiler is false.") \
83 range(1, max_jint) \
84 \
85 NOT_COMPILER2(product(intx, MaxVectorSize, 64, \
86 "Max vector size in bytes, " \
87 "actual size could be less depending on elements type")) \
88 \
89 NOT_COMPILER2(product(bool, ReduceInitialCardMarks, true, \
90 "Defer write barriers of young objects")) \
91 \
92 experimental(intx, JVMCITraceLevel, 0, \
93 "Trace level for JVMCI: " \
94 "1 means emit a message for each CompilerToVM call," \
95 "levels greater than 1 provide progressively greater detail") \
96 \
97 experimental(intx, JVMCICounterSize, 0, \
98 "Reserved size for benchmark counters") \
99 range(0, max_jint) \
100 \
101 experimental(bool, JVMCICountersExcludeCompiler, true, \
102 "Exclude JVMCI compiler threads from benchmark counters") \
103 \
104 develop(bool, JVMCIUseFastLocking, true, \
105 "Use fast inlined locking code") \
106 \
107 experimental(intx, JVMCINMethodSizeLimit, (80*K)*wordSize, \
108 "Maximum size of a compiled method.") \
109 \
110 experimental(intx, MethodProfileWidth, 0, \
111 "Number of methods to record in call profile") \
112 \
113 experimental(ccstr, JVMCILibPath, NULL, \
114 "LD path for loading the JVMCI shared library") \
115 \
116 experimental(ccstr, JVMCILibDumpJNIConfig, NULL, \
117 "Dumps to the given file a description of the classes, fields " \
118 "and methods the JVMCI shared library must provide") \
119 \
120 experimental(bool, UseJVMCINativeLibrary, false, \
121 "Execute JVMCI Java code from a shared library " \
122 "instead of loading it from class files and executing it " \
123 "on the HotSpot heap. Defaults to true if EnableJVMCIProduct is " \
124 "true and a JVMCI native library is available.") \
125 \
126 NOT_COMPILER2(diagnostic(bool, UseMultiplyToLenIntrinsic, false, \
127 "Enables intrinsification of BigInteger.multiplyToLen()")) \
128 \
129 NOT_COMPILER2(diagnostic(bool, UseSquareToLenIntrinsic, false, \
130 "Enables intrinsification of BigInteger.squareToLen()")) \
131 \
132 NOT_COMPILER2(diagnostic(bool, UseMulAddIntrinsic, false, \
133 "Enables intrinsification of BigInteger.mulAdd()")) \
134 \
135 NOT_COMPILER2(diagnostic(bool, UseMontgomeryMultiplyIntrinsic, false, \
136 "Enables intrinsification of BigInteger.montgomeryMultiply()")) \
137 \
138 NOT_COMPILER2(diagnostic(bool, UseMontgomerySquareIntrinsic, false, \
139 "Enables intrinsification of BigInteger.montgomerySquare()"))
140
141 // The base name for the shared library containing the JVMCI based compiler
142 #define JVMCI_SHARED_LIBRARY_NAME "jvmcicompiler"
143
144 class JVMCIGlobals {
145 private:
146 static fileStream* _jni_config_file;
147 public:
148
149 // Returns true if jvmci flags are consistent. If not consistent,
150 // an error message describing the inconsistency is printed before
151 // returning false.
152 static bool check_jvmci_flags_are_consistent();
153
154 // Convert JVMCI experimental flags to product
155 static bool enable_jvmci_product_mode(JVMFlag::Flags);
156
157 // Check and exit VM with error if selected GC is not supported by JVMCI.
158 static void check_jvmci_supported_gc();
159
160 static fileStream* get_jni_config_file() { return _jni_config_file; }
161 };
162 #endif // SHARE_JVMCI_JVMCI_GLOBALS_HPP