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Diffstat (limited to 'deps/v8/src/compiler/mips64/code-generator-mips64.cc')
-rw-r--r--deps/v8/src/compiler/mips64/code-generator-mips64.cc99
1 files changed, 72 insertions, 27 deletions
diff --git a/deps/v8/src/compiler/mips64/code-generator-mips64.cc b/deps/v8/src/compiler/mips64/code-generator-mips64.cc
index 373a1a6abc..c6341b1210 100644
--- a/deps/v8/src/compiler/mips64/code-generator-mips64.cc
+++ b/deps/v8/src/compiler/mips64/code-generator-mips64.cc
@@ -120,8 +120,11 @@ class MipsOperandConverter final : public InstructionOperandConverter {
MemOperand ToMemOperand(InstructionOperand* op) const {
DCHECK_NOT_NULL(op);
DCHECK(op->IsStackSlot() || op->IsDoubleStackSlot());
- FrameOffset offset = frame_access_state()->GetFrameOffset(
- AllocatedOperand::cast(op)->index());
+ return SlotToMemOperand(AllocatedOperand::cast(op)->index());
+ }
+
+ MemOperand SlotToMemOperand(int slot) const {
+ FrameOffset offset = frame_access_state()->GetFrameOffset(slot);
return MemOperand(offset.from_stack_pointer() ? sp : fp, offset.offset());
}
};
@@ -221,7 +224,8 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
value_(value),
scratch0_(scratch0),
scratch1_(scratch1),
- mode_(mode) {}
+ mode_(mode),
+ must_save_lr_(!gen->frame_access_state()->has_frame()) {}
void Generate() final {
if (mode_ > RecordWriteMode::kValueIsPointer) {
@@ -235,7 +239,7 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
: OMIT_REMEMBERED_SET;
SaveFPRegsMode const save_fp_mode =
frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
- if (!frame()->needs_frame()) {
+ if (must_save_lr_) {
// We need to save and restore ra if the frame was elided.
__ Push(ra);
}
@@ -243,7 +247,7 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
remembered_set_action, save_fp_mode);
__ Daddu(scratch1_, object_, index_);
__ CallStub(&stub);
- if (!frame()->needs_frame()) {
+ if (must_save_lr_) {
__ Pop(ra);
}
}
@@ -255,6 +259,7 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
Register const scratch0_;
Register const scratch1_;
RecordWriteMode const mode_;
+ bool must_save_lr_;
};
@@ -479,6 +484,13 @@ FPUCondition FlagsConditionToConditionCmpFPU(bool& predicate,
__ bind(&done); \
}
+void CodeGenerator::AssembleDeconstructFrame() {
+ __ mov(sp, fp);
+ __ Pop(ra, fp);
+}
+
+void CodeGenerator::AssembleSetupStackPointer() {}
+
void CodeGenerator::AssembleDeconstructActivationRecord(int stack_param_delta) {
int sp_slot_delta = TailCallFrameStackSlotDelta(stack_param_delta);
if (sp_slot_delta > 0) {
@@ -494,20 +506,44 @@ void CodeGenerator::AssemblePrepareTailCall(int stack_param_delta) {
__ Dsubu(sp, sp, Operand(-sp_slot_delta * kPointerSize));
frame_access_state()->IncreaseSPDelta(-sp_slot_delta);
}
- if (frame()->needs_frame()) {
+ if (frame_access_state()->has_frame()) {
__ ld(ra, MemOperand(fp, StandardFrameConstants::kCallerPCOffset));
__ ld(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
}
frame_access_state()->SetFrameAccessToSP();
}
+void CodeGenerator::AssemblePopArgumentsAdaptorFrame(Register args_reg,
+ Register scratch1,
+ Register scratch2,
+ Register scratch3) {
+ DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
+ Label done;
+
+ // Check if current frame is an arguments adaptor frame.
+ __ ld(scratch3, MemOperand(fp, StandardFrameConstants::kContextOffset));
+ __ Branch(&done, ne, scratch3,
+ Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
+
+ // Load arguments count from current arguments adaptor frame (note, it
+ // does not include receiver).
+ Register caller_args_count_reg = scratch1;
+ __ ld(caller_args_count_reg,
+ MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset));
+ __ SmiUntag(caller_args_count_reg);
+
+ ParameterCount callee_args_count(args_reg);
+ __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
+ scratch3);
+ __ bind(&done);
+}
// Assembles an instruction after register allocation, producing machine code.
void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
MipsOperandConverter i(this, instr);
InstructionCode opcode = instr->opcode();
-
- switch (ArchOpcodeField::decode(opcode)) {
+ ArchOpcode arch_opcode = ArchOpcodeField::decode(opcode);
+ switch (arch_opcode) {
case kArchCallCodeObject: {
EnsureSpaceForLazyDeopt();
if (instr->InputAt(0)->IsImmediate()) {
@@ -521,9 +557,15 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
frame_access_state()->ClearSPDelta();
break;
}
+ case kArchTailCallCodeObjectFromJSFunction:
case kArchTailCallCodeObject: {
int stack_param_delta = i.InputInt32(instr->InputCount() - 1);
AssembleDeconstructActivationRecord(stack_param_delta);
+ if (arch_opcode == kArchTailCallCodeObjectFromJSFunction) {
+ AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister,
+ i.TempRegister(0), i.TempRegister(1),
+ i.TempRegister(2));
+ }
if (instr->InputAt(0)->IsImmediate()) {
__ Jump(Handle<Code>::cast(i.InputHeapObject(0)),
RelocInfo::CODE_TARGET);
@@ -548,6 +590,7 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
frame_access_state()->ClearSPDelta();
break;
}
+ case kArchTailCallJSFunctionFromJSFunction:
case kArchTailCallJSFunction: {
Register func = i.InputRegister(0);
if (FLAG_debug_code) {
@@ -557,6 +600,11 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
}
int stack_param_delta = i.InputInt32(instr->InputCount() - 1);
AssembleDeconstructActivationRecord(stack_param_delta);
+ if (arch_opcode == kArchTailCallJSFunctionFromJSFunction) {
+ AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister,
+ i.TempRegister(0), i.TempRegister(1),
+ i.TempRegister(2));
+ }
__ ld(at, FieldMemOperand(func, JSFunction::kCodeEntryOffset));
__ Jump(at);
frame_access_state()->ClearSPDelta();
@@ -616,7 +664,7 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
__ mov(i.OutputRegister(), fp);
break;
case kArchParentFramePointer:
- if (frame_access_state()->frame()->needs_frame()) {
+ if (frame_access_state()->has_frame()) {
__ ld(i.OutputRegister(), MemOperand(fp, 0));
} else {
__ mov(i.OutputRegister(), fp);
@@ -1831,17 +1879,16 @@ void CodeGenerator::AssembleDeoptimizerCall(
void CodeGenerator::AssemblePrologue() {
CallDescriptor* descriptor = linkage()->GetIncomingDescriptor();
- if (descriptor->IsCFunctionCall()) {
- __ Push(ra, fp);
- __ mov(fp, sp);
- } else if (descriptor->IsJSFunctionCall()) {
- __ Prologue(this->info()->GeneratePreagedPrologue());
- } else if (frame()->needs_frame()) {
- __ StubPrologue();
- } else {
- frame()->SetElidedFrameSizeInSlots(0);
+ if (frame_access_state()->has_frame()) {
+ if (descriptor->IsCFunctionCall()) {
+ __ Push(ra, fp);
+ __ mov(fp, sp);
+ } else if (descriptor->IsJSFunctionCall()) {
+ __ Prologue(this->info()->GeneratePreagedPrologue());
+ } else {
+ __ StubPrologue(info()->GetOutputStackFrameType());
+ }
}
- frame_access_state()->SetFrameAccessToDefault();
int stack_shrink_slots = frame()->GetSpillSlotCount();
if (info()->is_osr()) {
@@ -1900,17 +1947,15 @@ void CodeGenerator::AssembleReturn() {
}
if (descriptor->IsCFunctionCall()) {
- __ mov(sp, fp);
- __ Pop(ra, fp);
- } else if (frame()->needs_frame()) {
+ AssembleDeconstructFrame();
+ } else if (frame_access_state()->has_frame()) {
// Canonicalize JSFunction return sites for now.
if (return_label_.is_bound()) {
__ Branch(&return_label_);
return;
} else {
__ bind(&return_label_);
- __ mov(sp, fp);
- __ Pop(ra, fp);
+ AssembleDeconstructFrame();
}
}
int pop_count = static_cast<int>(descriptor->StackParameterCount());
@@ -1969,9 +2014,9 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
case Constant::kHeapObject: {
Handle<HeapObject> src_object = src.ToHeapObject();
Heap::RootListIndex index;
- int offset;
- if (IsMaterializableFromFrame(src_object, &offset)) {
- __ ld(dst, MemOperand(fp, offset));
+ int slot;
+ if (IsMaterializableFromFrame(src_object, &slot)) {
+ __ ld(dst, g.SlotToMemOperand(slot));
} else if (IsMaterializableFromRoot(src_object, &index)) {
__ LoadRoot(dst, index);
} else {
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-12 14:14:39 +0000