|
| 1 | +From 723ed88782dbe9462aba5711a70be628d694bfda Mon Sep 17 00:00:00 2001 |
| 2 | +From: Leszek Swirski <leszeks@chromium.org> |
| 3 | +Date: Tue, 17 Oct 2017 17:20:15 +0100 |
| 4 | +Subject: [PATCH 5/5] Remove TryInstallOptimizedCode |
| 5 | + |
| 6 | +Removes the interrupt check and runtime call to TryInstallOptimizedCode |
| 7 | +from the optimization marker checks (i.e. CompileLazy and |
| 8 | +InterpreterEntryTrampoline). Instead, we rely on the other interrupt |
| 9 | +sources (in particular stack checks at function entries and loop |
| 10 | +headers) to install optimized code for us. |
| 11 | + |
| 12 | +This will hopefully not cause regressions, as we have plenty of other |
| 13 | +interrupt checks, but it may delay optimized code execution for |
| 14 | +some function by one function call. |
| 15 | + |
| 16 | +Bug: v8:6933 |
| 17 | +Change-Id: Ieadfff7ae2078d2a84085294158ad9a706eb9c64 |
| 18 | +Reviewed-on: https://chromium-review.googlesource.com/723475 |
| 19 | +Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> |
| 20 | +Commit-Queue: Leszek Swirski <leszeks@chromium.org> |
| 21 | +Cr-Commit-Position: refs/heads/master@{#48667} |
| 22 | +--- |
| 23 | + src/builtins/arm/builtins-arm.cc | 13 +++---------- |
| 24 | + src/builtins/arm64/builtins-arm64.cc | 13 +++---------- |
| 25 | + src/builtins/ia32/builtins-ia32.cc | 15 +++------------ |
| 26 | + src/builtins/mips/builtins-mips.cc | 13 +++---------- |
| 27 | + src/builtins/mips64/builtins-mips64.cc | 13 +++---------- |
| 28 | + src/builtins/ppc/builtins-ppc.cc | 14 +++----------- |
| 29 | + src/builtins/s390/builtins-s390.cc | 13 +++---------- |
| 30 | + src/builtins/x64/builtins-x64.cc | 13 +++---------- |
| 31 | + src/runtime/runtime-compiler.cc | 21 --------------------- |
| 32 | + src/runtime/runtime.h | 1 - |
| 33 | + 10 files changed, 24 insertions(+), 105 deletions(-) |
| 34 | + |
| 35 | +diff --git a/src/builtins/arm/builtins-arm.cc b/src/builtins/arm/builtins-arm.cc |
| 36 | +index bf359d69e9..e8fa690660 100644 |
| 37 | +--- a/src/builtins/arm/builtins-arm.cc |
| 38 | ++++ b/src/builtins/arm/builtins-arm.cc |
| 39 | +@@ -782,22 +782,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 40 | + Runtime::kCompileOptimized_Concurrent); |
| 41 | + |
| 42 | + { |
| 43 | +- // Otherwise, the marker is InOptimizationQueue. |
| 44 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 45 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 46 | + if (FLAG_debug_code) { |
| 47 | + __ cmp( |
| 48 | + optimized_code_entry, |
| 49 | + Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue))); |
| 50 | + __ Assert(eq, kExpectedOptimizationSentinel); |
| 51 | + } |
| 52 | +- // Checking whether the queued function is ready for install is |
| 53 | +- // optional, since we come across interrupts and stack checks elsewhere. |
| 54 | +- // However, not checking may delay installing ready functions, and |
| 55 | +- // always checking would be quite expensive. A good compromise is to |
| 56 | +- // first check against stack limit as a cue for an interrupt signal. |
| 57 | +- __ LoadRoot(scratch2, Heap::kStackLimitRootIndex); |
| 58 | +- __ cmp(sp, Operand(scratch2)); |
| 59 | +- __ b(hs, &fallthrough); |
| 60 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 61 | ++ __ jmp(&fallthrough); |
| 62 | + } |
| 63 | + } |
| 64 | + |
| 65 | +diff --git a/src/builtins/arm64/builtins-arm64.cc b/src/builtins/arm64/builtins-arm64.cc |
| 66 | +index b1d5d32b9a..7aaa2d0003 100644 |
| 67 | +--- a/src/builtins/arm64/builtins-arm64.cc |
| 68 | ++++ b/src/builtins/arm64/builtins-arm64.cc |
| 69 | +@@ -788,22 +788,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 70 | + Runtime::kCompileOptimized_Concurrent); |
| 71 | + |
| 72 | + { |
| 73 | +- // Otherwise, the marker is InOptimizationQueue. |
| 74 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 75 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 76 | + if (FLAG_debug_code) { |
| 77 | + __ Cmp( |
| 78 | + optimized_code_entry, |
| 79 | + Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue))); |
| 80 | + __ Assert(eq, kExpectedOptimizationSentinel); |
| 81 | + } |
| 82 | +- |
| 83 | +- // Checking whether the queued function is ready for install is optional, |
| 84 | +- // since we come across interrupts and stack checks elsewhere. However, |
| 85 | +- // not checking may delay installing ready functions, and always checking |
| 86 | +- // would be quite expensive. A good compromise is to first check against |
| 87 | +- // stack limit as a cue for an interrupt signal. |
| 88 | +- __ CompareRoot(masm->StackPointer(), Heap::kStackLimitRootIndex); |
| 89 | +- __ B(hs, &fallthrough); |
| 90 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 91 | ++ __ B(&fallthrough); |
| 92 | + } |
| 93 | + } |
| 94 | + |
| 95 | +diff --git a/src/builtins/ia32/builtins-ia32.cc b/src/builtins/ia32/builtins-ia32.cc |
| 96 | +index ee15025520..a689c3131d 100644 |
| 97 | +--- a/src/builtins/ia32/builtins-ia32.cc |
| 98 | ++++ b/src/builtins/ia32/builtins-ia32.cc |
| 99 | +@@ -698,24 +698,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 100 | + Runtime::kCompileOptimized_Concurrent); |
| 101 | + |
| 102 | + { |
| 103 | +- // Otherwise, the marker is InOptimizationQueue. |
| 104 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 105 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 106 | + if (FLAG_debug_code) { |
| 107 | + __ cmp( |
| 108 | + optimized_code_entry, |
| 109 | + Immediate(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue))); |
| 110 | + __ Assert(equal, kExpectedOptimizationSentinel); |
| 111 | + } |
| 112 | +- |
| 113 | +- // Checking whether the queued function is ready for install is optional, |
| 114 | +- // since we come across interrupts and stack checks elsewhere. However, |
| 115 | +- // not checking may delay installing ready functions, and always checking |
| 116 | +- // would be quite expensive. A good compromise is to first check against |
| 117 | +- // stack limit as a cue for an interrupt signal. |
| 118 | +- ExternalReference stack_limit = |
| 119 | +- ExternalReference::address_of_stack_limit(masm->isolate()); |
| 120 | +- __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 121 | +- __ j(above_equal, &fallthrough); |
| 122 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 123 | ++ __ jmp(&fallthrough); |
| 124 | + } |
| 125 | + } |
| 126 | + |
| 127 | +diff --git a/src/builtins/mips/builtins-mips.cc b/src/builtins/mips/builtins-mips.cc |
| 128 | +index e8f846c10a..4835fb0b1b 100644 |
| 129 | +--- a/src/builtins/mips/builtins-mips.cc |
| 130 | ++++ b/src/builtins/mips/builtins-mips.cc |
| 131 | +@@ -760,21 +760,14 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 132 | + Runtime::kCompileOptimized_Concurrent); |
| 133 | + |
| 134 | + { |
| 135 | +- // Otherwise, the marker is InOptimizationQueue. |
| 136 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 137 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 138 | + if (FLAG_debug_code) { |
| 139 | + __ Assert( |
| 140 | + eq, kExpectedOptimizationSentinel, optimized_code_entry, |
| 141 | + Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue))); |
| 142 | + } |
| 143 | +- |
| 144 | +- // Checking whether the queued function is ready for install is optional, |
| 145 | +- // since we come across interrupts and stack checks elsewhere. However, |
| 146 | +- // not checking may delay installing ready functions, and always checking |
| 147 | +- // would be quite expensive. A good compromise is to first check against |
| 148 | +- // stack limit as a cue for an interrupt signal. |
| 149 | +- __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 150 | +- __ Branch(&fallthrough, hs, sp, Operand(at)); |
| 151 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 152 | ++ __ jmp(&fallthrough); |
| 153 | + } |
| 154 | + } |
| 155 | + |
| 156 | +diff --git a/src/builtins/mips64/builtins-mips64.cc b/src/builtins/mips64/builtins-mips64.cc |
| 157 | +index f62750b061..2584444f1f 100644 |
| 158 | +--- a/src/builtins/mips64/builtins-mips64.cc |
| 159 | ++++ b/src/builtins/mips64/builtins-mips64.cc |
| 160 | +@@ -760,21 +760,14 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 161 | + Runtime::kCompileOptimized_Concurrent); |
| 162 | + |
| 163 | + { |
| 164 | +- // Otherwise, the marker is InOptimizationQueue. |
| 165 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 166 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 167 | + if (FLAG_debug_code) { |
| 168 | + __ Assert( |
| 169 | + eq, kExpectedOptimizationSentinel, optimized_code_entry, |
| 170 | + Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue))); |
| 171 | + } |
| 172 | +- |
| 173 | +- // Checking whether the queued function is ready for install is optional, |
| 174 | +- // since we come across interrupts and stack checks elsewhere. However, |
| 175 | +- // not checking may delay installing ready functions, and always checking |
| 176 | +- // would be quite expensive. A good compromise is to first check against |
| 177 | +- // stack limit as a cue for an interrupt signal. |
| 178 | +- __ LoadRoot(t0, Heap::kStackLimitRootIndex); |
| 179 | +- __ Branch(&fallthrough, hs, sp, Operand(t0)); |
| 180 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 181 | ++ __ jmp(&fallthrough); |
| 182 | + } |
| 183 | + } |
| 184 | + |
| 185 | +diff --git a/src/builtins/ppc/builtins-ppc.cc b/src/builtins/ppc/builtins-ppc.cc |
| 186 | +index 3ed3eb686d..c242be5cf8 100644 |
| 187 | +--- a/src/builtins/ppc/builtins-ppc.cc |
| 188 | ++++ b/src/builtins/ppc/builtins-ppc.cc |
| 189 | +@@ -780,23 +780,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 190 | + Runtime::kCompileOptimized_Concurrent); |
| 191 | + |
| 192 | + { |
| 193 | +- // Otherwise, the marker is InOptimizationQueue. |
| 194 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 195 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 196 | + if (FLAG_debug_code) { |
| 197 | + __ CmpSmiLiteral( |
| 198 | + optimized_code_entry, |
| 199 | + Smi::FromEnum(OptimizationMarker::kInOptimizationQueue), r0); |
| 200 | + __ Assert(eq, kExpectedOptimizationSentinel); |
| 201 | + } |
| 202 | +- |
| 203 | +- // Checking whether the queued function is ready for install is optional, |
| 204 | +- // since we come across interrupts and stack checks elsewhere. However, |
| 205 | +- // not checking may delay installing ready functions, and always checking |
| 206 | +- // would be quite expensive. A good compromise is to first check against |
| 207 | +- // stack limit as a cue for an interrupt signal. |
| 208 | +- __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
| 209 | +- __ cmpl(sp, ip); |
| 210 | +- __ bge(&fallthrough); |
| 211 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 212 | ++ __ b(&fallthrough); |
| 213 | + } |
| 214 | + } |
| 215 | + |
| 216 | +diff --git a/src/builtins/s390/builtins-s390.cc b/src/builtins/s390/builtins-s390.cc |
| 217 | +index e9ef390c69..aa9e62f217 100644 |
| 218 | +--- a/src/builtins/s390/builtins-s390.cc |
| 219 | ++++ b/src/builtins/s390/builtins-s390.cc |
| 220 | +@@ -783,22 +783,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 221 | + Runtime::kCompileOptimized_Concurrent); |
| 222 | + |
| 223 | + { |
| 224 | +- // Otherwise, the marker is InOptimizationQueue. |
| 225 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 226 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 227 | + if (FLAG_debug_code) { |
| 228 | + __ CmpSmiLiteral( |
| 229 | + optimized_code_entry, |
| 230 | + Smi::FromEnum(OptimizationMarker::kInOptimizationQueue), r0); |
| 231 | + __ Assert(eq, kExpectedOptimizationSentinel); |
| 232 | + } |
| 233 | +- |
| 234 | +- // Checking whether the queued function is ready for install is optional, |
| 235 | +- // since we come across interrupts and stack checks elsewhere. However, |
| 236 | +- // not checking may delay installing ready functions, and always checking |
| 237 | +- // would be quite expensive. A good compromise is to first check against |
| 238 | +- // stack limit as a cue for an interrupt signal. |
| 239 | +- __ CmpLogicalP(sp, RootMemOperand(Heap::kStackLimitRootIndex)); |
| 240 | +- __ bge(&fallthrough, Label::kNear); |
| 241 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 242 | ++ __ b(&fallthrough, Label::kNear); |
| 243 | + } |
| 244 | + } |
| 245 | + |
| 246 | +diff --git a/src/builtins/x64/builtins-x64.cc b/src/builtins/x64/builtins-x64.cc |
| 247 | +index 713475cd34..81c92681d5 100644 |
| 248 | +--- a/src/builtins/x64/builtins-x64.cc |
| 249 | ++++ b/src/builtins/x64/builtins-x64.cc |
| 250 | +@@ -781,21 +781,14 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm, |
| 251 | + Runtime::kCompileOptimized_Concurrent); |
| 252 | + |
| 253 | + { |
| 254 | +- // Otherwise, the marker is InOptimizationQueue. |
| 255 | ++ // Otherwise, the marker is InOptimizationQueue, so fall through hoping |
| 256 | ++ // that an interrupt will eventually update the slot with optimized code. |
| 257 | + if (FLAG_debug_code) { |
| 258 | + __ SmiCompare(optimized_code_entry, |
| 259 | + Smi::FromEnum(OptimizationMarker::kInOptimizationQueue)); |
| 260 | + __ Assert(equal, kExpectedOptimizationSentinel); |
| 261 | + } |
| 262 | +- |
| 263 | +- // Checking whether the queued function is ready for install is optional, |
| 264 | +- // since we come across interrupts and stack checks elsewhere. However, |
| 265 | +- // not checking may delay installing ready functions, and always checking |
| 266 | +- // would be quite expensive. A good compromise is to first check against |
| 267 | +- // stack limit as a cue for an interrupt signal. |
| 268 | +- __ CompareRoot(rsp, Heap::kStackLimitRootIndex); |
| 269 | +- __ j(above_equal, &fallthrough); |
| 270 | +- GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
| 271 | ++ __ jmp(&fallthrough); |
| 272 | + } |
| 273 | + } |
| 274 | + |
| 275 | +diff --git a/src/runtime/runtime-compiler.cc b/src/runtime/runtime-compiler.cc |
| 276 | +index 1cc00f5b7e..b445037d08 100644 |
| 277 | +--- a/src/runtime/runtime-compiler.cc |
| 278 | ++++ b/src/runtime/runtime-compiler.cc |
| 279 | +@@ -302,27 +302,6 @@ RUNTIME_FUNCTION(Runtime_CompileForOnStackReplacement) { |
| 280 | + return NULL; |
| 281 | + } |
| 282 | + |
| 283 | +- |
| 284 | +-RUNTIME_FUNCTION(Runtime_TryInstallOptimizedCode) { |
| 285 | +- HandleScope scope(isolate); |
| 286 | +- DCHECK_EQ(1, args.length()); |
| 287 | +- CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0); |
| 288 | +- |
| 289 | +- // First check if this is a real stack overflow. |
| 290 | +- StackLimitCheck check(isolate); |
| 291 | +- if (check.JsHasOverflowed(kStackSpaceRequiredForCompilation * KB)) { |
| 292 | +- return isolate->StackOverflow(); |
| 293 | +- } |
| 294 | +- |
| 295 | +- // Only try to install optimized functions if the interrupt was InstallCode. |
| 296 | +- if (isolate->stack_guard()->CheckAndClearInstallCode()) { |
| 297 | +- isolate->optimizing_compile_dispatcher()->InstallOptimizedFunctions(); |
| 298 | +- } |
| 299 | +- |
| 300 | +- return (function->IsOptimized()) ? function->code() |
| 301 | +- : function->shared()->code(); |
| 302 | +-} |
| 303 | +- |
| 304 | + static Object* CompileGlobalEval(Isolate* isolate, Handle<String> source, |
| 305 | + Handle<SharedFunctionInfo> outer_info, |
| 306 | + LanguageMode language_mode, |
| 307 | +diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h |
| 308 | +index e7084a8cca..a11d274d25 100644 |
| 309 | +--- a/src/runtime/runtime.h |
| 310 | ++++ b/src/runtime/runtime.h |
| 311 | +@@ -120,7 +120,6 @@ namespace internal { |
| 312 | + F(NotifyStubFailure, 0, 1) \ |
| 313 | + F(NotifyDeoptimized, 0, 1) \ |
| 314 | + F(CompileForOnStackReplacement, 1, 1) \ |
| 315 | +- F(TryInstallOptimizedCode, 1, 1) \ |
| 316 | + F(ResolvePossiblyDirectEval, 6, 1) \ |
| 317 | + F(InstantiateAsmJs, 4, 1) |
| 318 | + |
| 319 | +-- |
| 320 | +2.15.1 |
| 321 | + |
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