1 /*
2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "code/codeCache.hpp"
27 #include "runtime/globals.hpp"
28 #include "runtime/globals_extension.hpp"
29 #include "compiler/compilerDefinitions.hpp"
30 #include "gc/shared/gcConfig.hpp"
31 #include "utilities/defaultStream.hpp"
32
33 const char* compilertype2name_tab[compiler_number_of_types] = {
34 "",
35 "c1",
36 "c2",
37 "jvmci"
38 };
39
40 #ifdef TIERED
41 bool CompilationModeFlag::_quick_only = false;
42 bool CompilationModeFlag::_high_only = false;
43 bool CompilationModeFlag::_high_only_quick_internal = false;
44
45
46 bool CompilationModeFlag::initialize() {
47 if (CompilationMode != NULL) {
48 if (strcmp(CompilationMode, "default") == 0) {
49 // Do nothing, just support the "default" keyword.
50 } else if (strcmp(CompilationMode, "quick-only") == 0) {
51 _quick_only = true;
52 } else if (strcmp(CompilationMode, "high-only") == 0) {
53 _high_only = true;
54 } else if (strcmp(CompilationMode, "high-only-quick-internal") == 0) {
55 _high_only_quick_internal = true;
56 } else {
57 jio_fprintf(defaultStream::error_stream(), "Unsupported compilation mode '%s', supported modes are: quick-only, high-only, high-only-quick-internal\n", CompilationMode);
58 return false;
59 }
60 }
61 return true;
62 }
63
64 #endif
65
66 #if defined(COMPILER2)
67 CompLevel CompLevel_highest_tier = CompLevel_full_optimization; // pure C2 and tiered or JVMCI and tiered
68 #elif defined(COMPILER1)
69 CompLevel CompLevel_highest_tier = CompLevel_simple; // pure C1 or JVMCI
70 #else
71 CompLevel CompLevel_highest_tier = CompLevel_none;
72 #endif
73
74 #if defined(COMPILER2)
75 CompMode Compilation_mode = CompMode_server;
76 #elif defined(COMPILER1)
77 CompMode Compilation_mode = CompMode_client;
78 #else
79 CompMode Compilation_mode = CompMode_none;
80 #endif
81
82 // Returns threshold scaled with CompileThresholdScaling
83 intx CompilerConfig::scaled_compile_threshold(intx threshold) {
84 return scaled_compile_threshold(threshold, CompileThresholdScaling);
85 }
86
87 // Returns freq_log scaled with CompileThresholdScaling
88 intx CompilerConfig::scaled_freq_log(intx freq_log) {
89 return scaled_freq_log(freq_log, CompileThresholdScaling);
90 }
91
92 // Returns threshold scaled with the value of scale.
93 // If scale < 0.0, threshold is returned without scaling.
94 intx CompilerConfig::scaled_compile_threshold(intx threshold, double scale) {
95 if (scale == 1.0 || scale < 0.0) {
96 return threshold;
97 } else {
98 return (intx)(threshold * scale);
99 }
100 }
101
102 // Returns freq_log scaled with the value of scale.
103 // Returned values are in the range of [0, InvocationCounter::number_of_count_bits + 1].
104 // If scale < 0.0, freq_log is returned without scaling.
105 intx CompilerConfig::scaled_freq_log(intx freq_log, double scale) {
106 // Check if scaling is necessary or if negative value was specified.
107 if (scale == 1.0 || scale < 0.0) {
108 return freq_log;
109 }
110 // Check values to avoid calculating log2 of 0.
111 if (scale == 0.0 || freq_log == 0) {
112 return 0;
113 }
114 // Determine the maximum notification frequency value currently supported.
115 // The largest mask value that the interpreter/C1 can handle is
116 // of length InvocationCounter::number_of_count_bits. Mask values are always
117 // one bit shorter then the value of the notification frequency. Set
118 // max_freq_bits accordingly.
119 intx max_freq_bits = InvocationCounter::number_of_count_bits + 1;
120 intx scaled_freq = scaled_compile_threshold((intx)1 << freq_log, scale);
121 if (scaled_freq == 0) {
122 // Return 0 right away to avoid calculating log2 of 0.
123 return 0;
124 } else if (scaled_freq > nth_bit(max_freq_bits)) {
125 return max_freq_bits;
126 } else {
127 return log2_intptr(scaled_freq);
128 }
129 }
130
131 #ifdef TIERED
132 void set_client_compilation_mode() {
133 Compilation_mode = CompMode_client;
134 CompLevel_highest_tier = CompLevel_simple;
135 FLAG_SET_ERGO(TieredCompilation, false);
136 FLAG_SET_ERGO(ProfileInterpreter, false);
137 #if INCLUDE_JVMCI
138 FLAG_SET_ERGO(EnableJVMCI, false);
139 FLAG_SET_ERGO(UseJVMCICompiler, false);
140 #endif
141 #if INCLUDE_AOT
142 FLAG_SET_ERGO(UseAOT, false);
143 #endif
144 if (FLAG_IS_DEFAULT(NeverActAsServerClassMachine)) {
145 FLAG_SET_ERGO(NeverActAsServerClassMachine, true);
146 }
147 if (FLAG_IS_DEFAULT(InitialCodeCacheSize)) {
148 FLAG_SET_ERGO(InitialCodeCacheSize, 160*K);
149 }
150 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) {
151 FLAG_SET_ERGO(ReservedCodeCacheSize, 32*M);
152 }
153 if (FLAG_IS_DEFAULT(NonProfiledCodeHeapSize)) {
154 FLAG_SET_ERGO(NonProfiledCodeHeapSize, 27*M);
155 }
156 if (FLAG_IS_DEFAULT(ProfiledCodeHeapSize)) {
157 FLAG_SET_ERGO(ProfiledCodeHeapSize, 0);
158 }
159 if (FLAG_IS_DEFAULT(NonNMethodCodeHeapSize)) {
160 FLAG_SET_ERGO(NonNMethodCodeHeapSize, 5*M);
161 }
162 if (FLAG_IS_DEFAULT(CodeCacheExpansionSize)) {
163 FLAG_SET_ERGO(CodeCacheExpansionSize, 32*K);
164 }
165 if (FLAG_IS_DEFAULT(MetaspaceSize)) {
166 FLAG_SET_ERGO(MetaspaceSize, MIN2(12*M, MaxMetaspaceSize));
167 }
168 if (FLAG_IS_DEFAULT(MaxRAM)) {
169 // Do not use FLAG_SET_ERGO to update MaxRAM, as this will impact
170 // heap setting done based on available phys_mem (see Arguments::set_heap_size).
171 FLAG_SET_DEFAULT(MaxRAM, 1ULL*G);
172 }
173 if (FLAG_IS_DEFAULT(CompileThreshold)) {
174 FLAG_SET_ERGO(CompileThreshold, 1500);
175 }
176 if (FLAG_IS_DEFAULT(OnStackReplacePercentage)) {
177 FLAG_SET_ERGO(OnStackReplacePercentage, 933);
178 }
179 if (FLAG_IS_DEFAULT(CICompilerCount)) {
180 FLAG_SET_ERGO(CICompilerCount, 1);
181 }
182 }
183
184 bool compilation_mode_selected() {
185 return !FLAG_IS_DEFAULT(TieredCompilation) ||
186 !FLAG_IS_DEFAULT(TieredStopAtLevel) ||
187 !FLAG_IS_DEFAULT(UseAOT)
188 JVMCI_ONLY(|| !FLAG_IS_DEFAULT(EnableJVMCI)
189 || !FLAG_IS_DEFAULT(UseJVMCICompiler));
190 }
191
192 void select_compilation_mode_ergonomically() {
193 #if defined(_WINDOWS) && !defined(_LP64)
194 if (FLAG_IS_DEFAULT(NeverActAsServerClassMachine)) {
195 FLAG_SET_ERGO(NeverActAsServerClassMachine, true);
196 }
197 #endif
198 if (NeverActAsServerClassMachine) {
199 set_client_compilation_mode();
200 }
201 }
202
203
204 void CompilerConfig::set_tiered_flags() {
205 // Increase the code cache size - tiered compiles a lot more.
206 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) {
207 FLAG_SET_ERGO(ReservedCodeCacheSize,
208 MIN2(CODE_CACHE_DEFAULT_LIMIT, (size_t)ReservedCodeCacheSize * 5));
209 }
210 // Enable SegmentedCodeCache if TieredCompilation is enabled, ReservedCodeCacheSize >= 240M
211 // and the code cache contains at least 8 pages (segmentation disables advantage of huge pages).
212 if (FLAG_IS_DEFAULT(SegmentedCodeCache) && ReservedCodeCacheSize >= 240*M &&
213 8 * CodeCache::page_size() <= ReservedCodeCacheSize) {
214 FLAG_SET_ERGO(SegmentedCodeCache, true);
215 }
216 if (!UseInterpreter) { // -Xcomp
217 Tier3InvokeNotifyFreqLog = 0;
218 Tier4InvocationThreshold = 0;
219 }
220
221 if (CompileThresholdScaling < 0) {
222 vm_exit_during_initialization("Negative value specified for CompileThresholdScaling", NULL);
223 }
224
225 if (CompilationModeFlag::disable_intermediate()) {
226 if (FLAG_IS_DEFAULT(Tier0ProfilingStartPercentage)) {
227 FLAG_SET_DEFAULT(Tier0ProfilingStartPercentage, 33);
228 }
229 }
230
231 // Scale tiered compilation thresholds.
232 // CompileThresholdScaling == 0.0 is equivalent to -Xint and leaves compilation thresholds unchanged.
233 if (!FLAG_IS_DEFAULT(CompileThresholdScaling) && CompileThresholdScaling > 0.0) {
234 FLAG_SET_ERGO(Tier0InvokeNotifyFreqLog, scaled_freq_log(Tier0InvokeNotifyFreqLog));
235 FLAG_SET_ERGO(Tier0BackedgeNotifyFreqLog, scaled_freq_log(Tier0BackedgeNotifyFreqLog));
236
237 FLAG_SET_ERGO(Tier3InvocationThreshold, scaled_compile_threshold(Tier3InvocationThreshold));
238 FLAG_SET_ERGO(Tier3MinInvocationThreshold, scaled_compile_threshold(Tier3MinInvocationThreshold));
239 FLAG_SET_ERGO(Tier3CompileThreshold, scaled_compile_threshold(Tier3CompileThreshold));
240 FLAG_SET_ERGO(Tier3BackEdgeThreshold, scaled_compile_threshold(Tier3BackEdgeThreshold));
241
242 // Tier2{Invocation,MinInvocation,Compile,Backedge}Threshold should be scaled here
243 // once these thresholds become supported.
244
245 FLAG_SET_ERGO(Tier2InvokeNotifyFreqLog, scaled_freq_log(Tier2InvokeNotifyFreqLog));
246 FLAG_SET_ERGO(Tier2BackedgeNotifyFreqLog, scaled_freq_log(Tier2BackedgeNotifyFreqLog));
247
248 FLAG_SET_ERGO(Tier3InvokeNotifyFreqLog, scaled_freq_log(Tier3InvokeNotifyFreqLog));
249 FLAG_SET_ERGO(Tier3BackedgeNotifyFreqLog, scaled_freq_log(Tier3BackedgeNotifyFreqLog));
250
251 FLAG_SET_ERGO(Tier23InlineeNotifyFreqLog, scaled_freq_log(Tier23InlineeNotifyFreqLog));
252
253 FLAG_SET_ERGO(Tier4InvocationThreshold, scaled_compile_threshold(Tier4InvocationThreshold));
254 FLAG_SET_ERGO(Tier4MinInvocationThreshold, scaled_compile_threshold(Tier4MinInvocationThreshold));
255 FLAG_SET_ERGO(Tier4CompileThreshold, scaled_compile_threshold(Tier4CompileThreshold));
256 FLAG_SET_ERGO(Tier4BackEdgeThreshold, scaled_compile_threshold(Tier4BackEdgeThreshold));
257
258 if (CompilationModeFlag::disable_intermediate()) {
259 FLAG_SET_ERGO(Tier40InvocationThreshold, scaled_compile_threshold(Tier40InvocationThreshold));
260 FLAG_SET_ERGO(Tier40MinInvocationThreshold, scaled_compile_threshold(Tier40MinInvocationThreshold));
261 FLAG_SET_ERGO(Tier40CompileThreshold, scaled_compile_threshold(Tier40CompileThreshold));
262 FLAG_SET_ERGO(Tier40BackEdgeThreshold, scaled_compile_threshold(Tier40BackEdgeThreshold));
263 }
264
265 #if INCLUDE_AOT
266 if (UseAOT) {
267 FLAG_SET_ERGO(Tier3AOTInvocationThreshold, scaled_compile_threshold(Tier3AOTInvocationThreshold));
268 FLAG_SET_ERGO(Tier3AOTMinInvocationThreshold, scaled_compile_threshold(Tier3AOTMinInvocationThreshold));
269 FLAG_SET_ERGO(Tier3AOTCompileThreshold, scaled_compile_threshold(Tier3AOTCompileThreshold));
270 FLAG_SET_ERGO(Tier3AOTBackEdgeThreshold, scaled_compile_threshold(Tier3AOTBackEdgeThreshold));
271
272 if (CompilationModeFlag::disable_intermediate()) {
273 FLAG_SET_ERGO(Tier0AOTInvocationThreshold, scaled_compile_threshold(Tier0AOTInvocationThreshold));
274 FLAG_SET_ERGO(Tier0AOTMinInvocationThreshold, scaled_compile_threshold(Tier0AOTMinInvocationThreshold));
275 FLAG_SET_ERGO(Tier0AOTCompileThreshold, scaled_compile_threshold(Tier0AOTCompileThreshold));
276 FLAG_SET_ERGO(Tier0AOTBackEdgeThreshold, scaled_compile_threshold(Tier0AOTBackEdgeThreshold));
277 }
278 }
279 #endif // INCLUDE_AOT
280 }
281 }
282
283 #endif // TIERED
284
285 #if INCLUDE_JVMCI
286 void set_jvmci_specific_flags() {
287 if (UseJVMCICompiler) {
288 Compilation_mode = CompMode_server;
289
290 if (FLAG_IS_DEFAULT(TypeProfileWidth)) {
291 FLAG_SET_DEFAULT(TypeProfileWidth, 8);
292 }
293 if (FLAG_IS_DEFAULT(TypeProfileLevel)) {
294 FLAG_SET_DEFAULT(TypeProfileLevel, 0);
295 }
296
297 if (UseJVMCINativeLibrary) {
298 // SVM compiled code requires more stack space
299 if (FLAG_IS_DEFAULT(CompilerThreadStackSize)) {
300 // Duplicate logic in the implementations of os::create_thread
301 // so that we can then double the computed stack size. Once
302 // the stack size requirements of SVM are better understood,
303 // this logic can be pushed down into os::create_thread.
304 int stack_size = CompilerThreadStackSize;
305 if (stack_size == 0) {
306 stack_size = VMThreadStackSize;
307 }
308 if (stack_size != 0) {
309 FLAG_SET_DEFAULT(CompilerThreadStackSize, stack_size * 2);
310 }
311 }
312 } else {
313 #ifdef TIERED
314 if (!TieredCompilation) {
315 warning("Disabling tiered compilation with non-native JVMCI compiler is not recommended. "
316 "Turning on tiered compilation and disabling intermediate compilation levels instead. ");
317 FLAG_SET_ERGO(TieredCompilation, true);
318 if (CompilationModeFlag::normal()) {
319 CompilationModeFlag::set_high_only_quick_internal(true);
320 }
321 if (CICompilerCount < 2 && CompilationModeFlag::quick_internal()) {
322 warning("Increasing number of compiler threads for JVMCI compiler.");
323 FLAG_SET_ERGO(CICompilerCount, 2);
324 }
325 }
326 #else // TIERED
327 // Adjust the on stack replacement percentage to avoid early
328 // OSR compilations while JVMCI itself is warming up
329 if (FLAG_IS_DEFAULT(OnStackReplacePercentage)) {
330 FLAG_SET_DEFAULT(OnStackReplacePercentage, 933);
331 }
332 #endif // !TIERED
333 // JVMCI needs values not less than defaults
334 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) {
335 FLAG_SET_DEFAULT(ReservedCodeCacheSize, MAX2(64*M, ReservedCodeCacheSize));
336 }
337 if (FLAG_IS_DEFAULT(InitialCodeCacheSize)) {
338 FLAG_SET_DEFAULT(InitialCodeCacheSize, MAX2(16*M, InitialCodeCacheSize));
339 }
340 if (FLAG_IS_DEFAULT(MetaspaceSize)) {
341 FLAG_SET_DEFAULT(MetaspaceSize, MIN2(MAX2(12*M, MetaspaceSize), MaxMetaspaceSize));
342 }
343 if (FLAG_IS_DEFAULT(NewSizeThreadIncrease)) {
344 FLAG_SET_DEFAULT(NewSizeThreadIncrease, MAX2(4*K, NewSizeThreadIncrease));
345 }
346 } // !UseJVMCINativeLibrary
347 } // UseJVMCICompiler
348 }
349 #endif // INCLUDE_JVMCI
350
351 bool CompilerConfig::check_args_consistency(bool status) {
352 // Check lower bounds of the code cache
353 // Template Interpreter code is approximately 3X larger in debug builds.
354 uint min_code_cache_size = CodeCacheMinimumUseSpace DEBUG_ONLY(* 3);
355 if (ReservedCodeCacheSize < InitialCodeCacheSize) {
356 jio_fprintf(defaultStream::error_stream(),
357 "Invalid ReservedCodeCacheSize: %dK. Must be at least InitialCodeCacheSize=%dK.\n",
358 ReservedCodeCacheSize/K, InitialCodeCacheSize/K);
359 status = false;
360 } else if (ReservedCodeCacheSize < min_code_cache_size) {
361 jio_fprintf(defaultStream::error_stream(),
362 "Invalid ReservedCodeCacheSize=%dK. Must be at least %uK.\n", ReservedCodeCacheSize/K,
363 min_code_cache_size/K);
364 status = false;
365 } else if (ReservedCodeCacheSize > CODE_CACHE_SIZE_LIMIT) {
366 // Code cache size larger than CODE_CACHE_SIZE_LIMIT is not supported.
367 jio_fprintf(defaultStream::error_stream(),
368 "Invalid ReservedCodeCacheSize=%dM. Must be at most %uM.\n", ReservedCodeCacheSize/M,
369 CODE_CACHE_SIZE_LIMIT/M);
370 status = false;
371 } else if (NonNMethodCodeHeapSize < min_code_cache_size) {
372 jio_fprintf(defaultStream::error_stream(),
373 "Invalid NonNMethodCodeHeapSize=%dK. Must be at least %uK.\n", NonNMethodCodeHeapSize/K,
374 min_code_cache_size/K);
375 status = false;
376 }
377
378 #ifdef _LP64
379 if (!FLAG_IS_DEFAULT(CICompilerCount) && !FLAG_IS_DEFAULT(CICompilerCountPerCPU) && CICompilerCountPerCPU) {
380 warning("The VM option CICompilerCountPerCPU overrides CICompilerCount.");
381 }
382 #endif
383
384 if (BackgroundCompilation && ReplayCompiles) {
385 if (!FLAG_IS_DEFAULT(BackgroundCompilation)) {
386 warning("BackgroundCompilation disabled due to ReplayCompiles option.");
387 }
388 FLAG_SET_CMDLINE(BackgroundCompilation, false);
389 }
390
391 #ifdef COMPILER2
392 if (PostLoopMultiversioning && !RangeCheckElimination) {
393 if (!FLAG_IS_DEFAULT(PostLoopMultiversioning)) {
394 warning("PostLoopMultiversioning disabled because RangeCheckElimination is disabled.");
395 }
396 FLAG_SET_CMDLINE(PostLoopMultiversioning, false);
397 }
398 if (UseCountedLoopSafepoints && LoopStripMiningIter == 0) {
399 if (!FLAG_IS_DEFAULT(UseCountedLoopSafepoints) || !FLAG_IS_DEFAULT(LoopStripMiningIter)) {
400 warning("When counted loop safepoints are enabled, LoopStripMiningIter must be at least 1 (a safepoint every 1 iteration): setting it to 1");
401 }
402 LoopStripMiningIter = 1;
403 } else if (!UseCountedLoopSafepoints && LoopStripMiningIter > 0) {
404 if (!FLAG_IS_DEFAULT(UseCountedLoopSafepoints) || !FLAG_IS_DEFAULT(LoopStripMiningIter)) {
405 warning("Disabling counted safepoints implies no loop strip mining: setting LoopStripMiningIter to 0");
406 }
407 LoopStripMiningIter = 0;
408 }
409 #endif // COMPILER2
410
411 if (Arguments::is_interpreter_only()) {
412 if (UseCompiler) {
413 if (!FLAG_IS_DEFAULT(UseCompiler)) {
414 warning("UseCompiler disabled due to -Xint.");
415 }
416 FLAG_SET_CMDLINE(UseCompiler, false);
417 }
418 if (ProfileInterpreter) {
419 if (!FLAG_IS_DEFAULT(ProfileInterpreter)) {
420 warning("ProfileInterpreter disabled due to -Xint.");
421 }
422 FLAG_SET_CMDLINE(ProfileInterpreter, false);
423 }
424 if (TieredCompilation) {
425 if (!FLAG_IS_DEFAULT(TieredCompilation)) {
426 warning("TieredCompilation disabled due to -Xint.");
427 }
428 FLAG_SET_CMDLINE(TieredCompilation, false);
429 }
430 #if INCLUDE_JVMCI
431 if (EnableJVMCI) {
432 if (!FLAG_IS_DEFAULT(EnableJVMCI) || !FLAG_IS_DEFAULT(UseJVMCICompiler)) {
433 warning("JVMCI Compiler disabled due to -Xint.");
434 }
435 FLAG_SET_CMDLINE(EnableJVMCI, false);
436 FLAG_SET_CMDLINE(UseJVMCICompiler, false);
437 }
438 #endif
439 } else {
440 #if INCLUDE_JVMCI
441 status = status && JVMCIGlobals::check_jvmci_flags_are_consistent();
442 #endif
443 }
444 return status;
445 }
446
447 void CompilerConfig::ergo_initialize() {
448 if (Arguments::is_interpreter_only()) {
449 return; // Nothing to do.
450 }
451
452 #ifdef TIERED
453 if (!compilation_mode_selected()) {
454 select_compilation_mode_ergonomically();
455 }
456 #endif
457
458 #if INCLUDE_JVMCI
459 // Check that JVMCI compiler supports selested GC.
460 // Should be done after GCConfig::initialize() was called.
461 JVMCIGlobals::check_jvmci_supported_gc();
462
463 // Do JVMCI specific settings
464 set_jvmci_specific_flags();
465 #endif
466
467 #ifdef TIERED
468 if (TieredCompilation) {
469 set_tiered_flags();
470 } else
471 #endif
472 {
473 // Scale CompileThreshold
474 // CompileThresholdScaling == 0.0 is equivalent to -Xint and leaves CompileThreshold unchanged.
475 if (!FLAG_IS_DEFAULT(CompileThresholdScaling) && CompileThresholdScaling > 0.0) {
476 FLAG_SET_ERGO(CompileThreshold, scaled_compile_threshold(CompileThreshold));
477 }
478 }
479
480 if (UseOnStackReplacement && !UseLoopCounter) {
481 warning("On-stack-replacement requires loop counters; enabling loop counters");
482 FLAG_SET_DEFAULT(UseLoopCounter, true);
483 }
484
485 #ifdef COMPILER2
486 if (!EliminateLocks) {
487 EliminateNestedLocks = false;
488 }
489 if (!Inline) {
490 IncrementalInline = false;
491 }
492 #ifndef PRODUCT
493 if (!IncrementalInline) {
494 AlwaysIncrementalInline = false;
495 }
496 if (PrintIdealGraphLevel > 0) {
497 FLAG_SET_ERGO(PrintIdealGraph, true);
498 }
499 #endif
500 if (!UseTypeSpeculation && FLAG_IS_DEFAULT(TypeProfileLevel)) {
501 // nothing to use the profiling, turn if off
502 FLAG_SET_DEFAULT(TypeProfileLevel, 0);
503 }
504 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) {
505 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1);
506 }
507 if (FLAG_IS_DEFAULT(LoopStripMiningIterShortLoop)) {
508 // blind guess
509 LoopStripMiningIterShortLoop = LoopStripMiningIter / 10;
510 }
511 #endif // COMPILER2
512 }