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-rw-r--r--src/3rdparty/v8/src/mips/deoptimizer-mips.cc155
1 files changed, 142 insertions, 13 deletions
diff --git a/src/3rdparty/v8/src/mips/deoptimizer-mips.cc b/src/3rdparty/v8/src/mips/deoptimizer-mips.cc
index 62f3155..9fd815b 100644
--- a/src/3rdparty/v8/src/mips/deoptimizer-mips.cc
+++ b/src/3rdparty/v8/src/mips/deoptimizer-mips.cc
@@ -48,6 +48,10 @@ void Deoptimizer::DeoptimizeFunction(JSFunction* function) {
if (!function->IsOptimized()) return;
+ // The optimized code is going to be patched, so we cannot use it
+ // any more. Play safe and reset the whole cache.
+ function->shared()->ClearOptimizedCodeMap();
+
// Get the optimized code.
Code* code = function->code();
Address code_start_address = code->instruction_start();
@@ -96,8 +100,7 @@ void Deoptimizer::DeoptimizeFunction(JSFunction* function) {
// ignore all slots that might have been recorded on it.
isolate->heap()->mark_compact_collector()->InvalidateCode(code);
- // Set the code for the function to non-optimized version.
- function->ReplaceCode(function->shared()->code());
+ ReplaceCodeForRelatedFunctions(function, code);
if (FLAG_trace_deopt) {
PrintF("[forced deoptimization: ");
@@ -186,11 +189,11 @@ void Deoptimizer::RevertStackCheckCodeAt(Code* unoptimized_code,
}
-static int LookupBailoutId(DeoptimizationInputData* data, unsigned ast_id) {
+static int LookupBailoutId(DeoptimizationInputData* data, BailoutId ast_id) {
ByteArray* translations = data->TranslationByteArray();
int length = data->DeoptCount();
for (int i = 0; i < length; i++) {
- if (static_cast<unsigned>(data->AstId(i)->value()) == ast_id) {
+ if (data->AstId(i) == ast_id) {
TranslationIterator it(translations, data->TranslationIndex(i)->value());
int value = it.Next();
ASSERT(Translation::BEGIN == static_cast<Translation::Opcode>(value));
@@ -209,7 +212,7 @@ void Deoptimizer::DoComputeOsrOutputFrame() {
optimized_code_->deoptimization_data());
unsigned ast_id = data->OsrAstId()->value();
- int bailout_id = LookupBailoutId(data, ast_id);
+ int bailout_id = LookupBailoutId(data, BailoutId(ast_id));
unsigned translation_index = data->TranslationIndex(bailout_id)->value();
ByteArray* translations = data->TranslationByteArray();
@@ -229,9 +232,9 @@ void Deoptimizer::DoComputeOsrOutputFrame() {
unsigned node_id = iterator.Next();
USE(node_id);
ASSERT(node_id == ast_id);
- JSFunction* function = JSFunction::cast(ComputeLiteral(iterator.Next()));
- USE(function);
- ASSERT(function == function_);
+ int closure_id = iterator.Next();
+ USE(closure_id);
+ ASSERT_EQ(Translation::kSelfLiteralId, closure_id);
unsigned height = iterator.Next();
unsigned height_in_bytes = height * kPointerSize;
USE(height_in_bytes);
@@ -342,8 +345,8 @@ void Deoptimizer::DoComputeOsrOutputFrame() {
if (FLAG_trace_osr) {
PrintF("[on-stack replacement translation %s: 0x%08" V8PRIxPTR " ",
ok ? "finished" : "aborted",
- reinterpret_cast<intptr_t>(function));
- function->PrintName();
+ reinterpret_cast<intptr_t>(function_));
+ function_->PrintName();
PrintF(" => pc=0x%0x]\n", output_[0]->GetPc());
}
}
@@ -567,19 +570,145 @@ void Deoptimizer::DoComputeConstructStubFrame(TranslationIterator* iterator,
}
+void Deoptimizer::DoComputeAccessorStubFrame(TranslationIterator* iterator,
+ int frame_index,
+ bool is_setter_stub_frame) {
+ JSFunction* accessor = JSFunction::cast(ComputeLiteral(iterator->Next()));
+ // The receiver (and the implicit return value, if any) are expected in
+ // registers by the LoadIC/StoreIC, so they don't belong to the output stack
+ // frame. This means that we have to use a height of 0.
+ unsigned height = 0;
+ unsigned height_in_bytes = height * kPointerSize;
+ const char* kind = is_setter_stub_frame ? "setter" : "getter";
+ if (FLAG_trace_deopt) {
+ PrintF(" translating %s stub => height=%u\n", kind, height_in_bytes);
+ }
+
+ // We need 5 stack entries from StackFrame::INTERNAL (ra, fp, cp, frame type,
+ // code object, see MacroAssembler::EnterFrame). For a setter stub frame we
+ // need one additional entry for the implicit return value, see
+ // StoreStubCompiler::CompileStoreViaSetter.
+ unsigned fixed_frame_entries = 5 + (is_setter_stub_frame ? 1 : 0);
+ unsigned fixed_frame_size = fixed_frame_entries * kPointerSize;
+ unsigned output_frame_size = height_in_bytes + fixed_frame_size;
+
+ // Allocate and store the output frame description.
+ FrameDescription* output_frame =
+ new(output_frame_size) FrameDescription(output_frame_size, accessor);
+ output_frame->SetFrameType(StackFrame::INTERNAL);
+
+ // A frame for an accessor stub can not be the topmost or bottommost one.
+ ASSERT(frame_index > 0 && frame_index < output_count_ - 1);
+ ASSERT(output_[frame_index] == NULL);
+ output_[frame_index] = output_frame;
+
+ // The top address of the frame is computed from the previous frame's top and
+ // this frame's size.
+ uint32_t top_address = output_[frame_index - 1]->GetTop() - output_frame_size;
+ output_frame->SetTop(top_address);
+
+ unsigned output_offset = output_frame_size;
+
+ // Read caller's PC from the previous frame.
+ output_offset -= kPointerSize;
+ intptr_t value = output_[frame_index - 1]->GetPc();
+ output_frame->SetFrameSlot(output_offset, value);
+ if (FLAG_trace_deopt) {
+ PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
+ " ; caller's pc\n",
+ top_address + output_offset, output_offset, value);
+ }
+
+ // Read caller's FP from the previous frame, and set this frame's FP.
+ output_offset -= kPointerSize;
+ value = output_[frame_index - 1]->GetFp();
+ output_frame->SetFrameSlot(output_offset, value);
+ intptr_t fp_value = top_address + output_offset;
+ output_frame->SetFp(fp_value);
+ if (FLAG_trace_deopt) {
+ PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
+ " ; caller's fp\n",
+ fp_value, output_offset, value);
+ }
+
+ // The context can be gotten from the previous frame.
+ output_offset -= kPointerSize;
+ value = output_[frame_index - 1]->GetContext();
+ output_frame->SetFrameSlot(output_offset, value);
+ if (FLAG_trace_deopt) {
+ PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
+ " ; context\n",
+ top_address + output_offset, output_offset, value);
+ }
+
+ // A marker value is used in place of the function.
+ output_offset -= kPointerSize;
+ value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::INTERNAL));
+ output_frame->SetFrameSlot(output_offset, value);
+ if (FLAG_trace_deopt) {
+ PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
+ " ; function (%s sentinel)\n",
+ top_address + output_offset, output_offset, value, kind);
+ }
+
+ // Get Code object from accessor stub.
+ output_offset -= kPointerSize;
+ Builtins::Name name = is_setter_stub_frame ?
+ Builtins::kStoreIC_Setter_ForDeopt :
+ Builtins::kLoadIC_Getter_ForDeopt;
+ Code* accessor_stub = isolate_->builtins()->builtin(name);
+ value = reinterpret_cast<intptr_t>(accessor_stub);
+ output_frame->SetFrameSlot(output_offset, value);
+ if (FLAG_trace_deopt) {
+ PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
+ " ; code object\n",
+ top_address + output_offset, output_offset, value);
+ }
+
+ // Skip receiver.
+ Translation::Opcode opcode =
+ static_cast<Translation::Opcode>(iterator->Next());
+ iterator->Skip(Translation::NumberOfOperandsFor(opcode));
+
+ if (is_setter_stub_frame) {
+ // The implicit return value was part of the artificial setter stub
+ // environment.
+ output_offset -= kPointerSize;
+ DoTranslateCommand(iterator, frame_index, output_offset);
+ }
+
+ ASSERT(0 == output_offset);
+
+ Smi* offset = is_setter_stub_frame ?
+ isolate_->heap()->setter_stub_deopt_pc_offset() :
+ isolate_->heap()->getter_stub_deopt_pc_offset();
+ intptr_t pc = reinterpret_cast<intptr_t>(
+ accessor_stub->instruction_start() + offset->value());
+ output_frame->SetPc(pc);
+}
+
+
// This code is very similar to ia32/arm code, but relies on register names
// (fp, sp) and how the frame is laid out.
void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator,
int frame_index) {
// Read the ast node id, function, and frame height for this output frame.
- int node_id = iterator->Next();
- JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next()));
+ BailoutId node_id = BailoutId(iterator->Next());
+ JSFunction* function;
+ if (frame_index != 0) {
+ function = JSFunction::cast(ComputeLiteral(iterator->Next()));
+ } else {
+ int closure_id = iterator->Next();
+ USE(closure_id);
+ ASSERT_EQ(Translation::kSelfLiteralId, closure_id);
+ function = function_;
+ }
unsigned height = iterator->Next();
unsigned height_in_bytes = height * kPointerSize;
if (FLAG_trace_deopt) {
PrintF(" translating ");
function->PrintName();
- PrintF(" => node=%d, height=%d\n", node_id, height_in_bytes);
+ PrintF(" => node=%d, height=%d\n", node_id.ToInt(), height_in_bytes);
}
// The 'fixed' part of the frame consists of the incoming parameters and
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-08 21:46:40 +0000