MIPS: Drop IsPregenerated() and allow_stub_calls flag.

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 0c5e35caecfabfcb07e57cd1af220f3409c724f5..bd421616307abfd46977664f67eeb0c708f61f5f 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -714,27 +714,6 @@ void DoubleToIStub::Generate(MacroAssembler* masm) {
 }
 
 
-bool WriteInt32ToHeapNumberStub::IsPregenerated(Isolate* isolate) {
-  // These variants are compiled ahead of time.  See next method.
-  if (the_int_.is(a1) &&
-      the_heap_number_.is(v0) &&
-      scratch_.is(a2) &&
-      sign_.is(a3)) {
-    return true;
-  }
-  if (the_int_.is(a2) &&
-      the_heap_number_.is(v0) &&
-      scratch_.is(a3) &&
-      sign_.is(a0)) {
-    return true;
-  }
-  // Other register combinations are generated as and when they are needed,
-  // so it is unsafe to call them from stubs (we can't generate a stub while
-  // we are generating a stub).
-  return false;
-}
-
-
 void WriteInt32ToHeapNumberStub::GenerateFixedRegStubsAheadOfTime(
     Isolate* isolate) {
   WriteInt32ToHeapNumberStub stub1(a1, v0, a2, a3);
@@ -1749,18 +1728,11 @@ bool CEntryStub::NeedsImmovableCode() {
 }
 
 
-bool CEntryStub::IsPregenerated(Isolate* isolate) {
-  return (!save_doubles_ || isolate->fp_stubs_generated()) &&
-          result_size_ == 1;
-}
-
-
 void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
   CEntryStub::GenerateAheadOfTime(isolate);
   WriteInt32ToHeapNumberStub::GenerateFixedRegStubsAheadOfTime(isolate);
   StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate);
   StubFailureTrampolineStub::GenerateAheadOfTime(isolate);
-  RecordWriteStub::GenerateFixedRegStubsAheadOfTime(isolate);
   ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
   CreateAllocationSiteStub::GenerateAheadOfTime(isolate);
   BinaryOpStub::GenerateAheadOfTime(isolate);
@@ -5506,68 +5478,6 @@ void NameDictionaryLookupStub::Generate(MacroAssembler* masm) {
 }
 
 
-struct AheadOfTimeWriteBarrierStubList {
-  Register object, value, address;
-  RememberedSetAction action;
-};
-
-
-#define REG(Name) { kRegister_ ## Name ## _Code }
-
-static const AheadOfTimeWriteBarrierStubList kAheadOfTime[] = {
-  // Used in RegExpExecStub.
-  { REG(s2), REG(s0), REG(t3), EMIT_REMEMBERED_SET },
-  // Used in CompileArrayPushCall.
-  // Also used in StoreIC::GenerateNormal via GenerateDictionaryStore.
-  // Also used in KeyedStoreIC::GenerateGeneric.
-  { REG(a3), REG(t0), REG(t1), EMIT_REMEMBERED_SET },
-  // Used in StoreStubCompiler::CompileStoreField via GenerateStoreField.
-  { REG(a1), REG(a2), REG(a3), EMIT_REMEMBERED_SET },
-  { REG(a3), REG(a2), REG(a1), EMIT_REMEMBERED_SET },
-  // Used in KeyedStoreStubCompiler::CompileStoreField via GenerateStoreField.
-  { REG(a2), REG(a1), REG(a3), EMIT_REMEMBERED_SET },
-  { REG(a3), REG(a1), REG(a2), EMIT_REMEMBERED_SET },
-  // KeyedStoreStubCompiler::GenerateStoreFastElement.
-  { REG(a3), REG(a2), REG(t0), EMIT_REMEMBERED_SET },
-  { REG(a2), REG(a3), REG(t0), EMIT_REMEMBERED_SET },
-  // ElementsTransitionGenerator::GenerateMapChangeElementTransition
-  // and ElementsTransitionGenerator::GenerateSmiToDouble
-  // and ElementsTransitionGenerator::GenerateDoubleToObject
-  { REG(a2), REG(a3), REG(t5), EMIT_REMEMBERED_SET },
-  { REG(a2), REG(a3), REG(t5), OMIT_REMEMBERED_SET },
-  // ElementsTransitionGenerator::GenerateDoubleToObject
-  { REG(t2), REG(a2), REG(a0), EMIT_REMEMBERED_SET },
-  { REG(a2), REG(t2), REG(t5), EMIT_REMEMBERED_SET },
-  // StoreArrayLiteralElementStub::Generate
-  { REG(t1), REG(a0), REG(t2), EMIT_REMEMBERED_SET },
-  // FastNewClosureStub::Generate
-  { REG(a2), REG(t0), REG(a1), EMIT_REMEMBERED_SET },
-  // StringAddStub::Generate
-  { REG(t3), REG(a1), REG(t0), EMIT_REMEMBERED_SET },
-  { REG(t3), REG(a0), REG(t0), EMIT_REMEMBERED_SET },
-  // Null termination.
-  { REG(no_reg), REG(no_reg), REG(no_reg), EMIT_REMEMBERED_SET}
-};
-
-#undef REG
-
-
-bool RecordWriteStub::IsPregenerated(Isolate* isolate) {
-  for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime;
-       !entry->object.is(no_reg);
-       entry++) {
-    if (object_.is(entry->object) &&
-        value_.is(entry->value) &&
-        address_.is(entry->address) &&
-        remembered_set_action_ == entry->action &&
-        save_fp_regs_mode_ == kDontSaveFPRegs) {
-      return true;
-    }
-  }
-  return false;
-}
-
-
 void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(
     Isolate* isolate) {
   StoreBufferOverflowStub stub1(kDontSaveFPRegs);
@@ -5578,20 +5488,6 @@ void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(
 }
 
 
-void RecordWriteStub::GenerateFixedRegStubsAheadOfTime(Isolate* isolate) {
-  for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime;
-       !entry->object.is(no_reg);
-       entry++) {
-    RecordWriteStub stub(entry->object,
-                         entry->value,
-                         entry->address,
-                         entry->action,
-                         kDontSaveFPRegs);
-    stub.GetCode(isolate)->set_is_pregenerated(true);
-  }
-}
-
-
 bool CodeStub::CanUseFPRegisters() {
   return true;  // FPU is a base requirement for V8.
 }
@@ -5898,7 +5794,6 @@ void StubFailureTailCallTrampolineStub::Generate(MacroAssembler* masm) {
 
 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
   if (masm->isolate()->function_entry_hook() != NULL) {
-    AllowStubCallsScope allow_stub_calls(masm, true);
     ProfileEntryHookStub stub;
     __ push(ra);
     __ CallStub(&stub);