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Unified Diff: src/compiler/mips/instruction-selector-mips.cc

Issue 889843003: [turbofan] Don't allocate UnallocatedOperands in Zone memory during instruction selection (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 10 months ago
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Index: src/compiler/mips/instruction-selector-mips.cc
diff --git a/src/compiler/mips/instruction-selector-mips.cc b/src/compiler/mips/instruction-selector-mips.cc
index 6eb29bce52ccfe2e2e34daf243049b4675fac3bd..ae6ba3f524d06cf16fa763cea4aa3686b4a1e78e 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -23,7 +23,7 @@ class MipsOperandGenerator FINAL : public OperandGenerator {
explicit MipsOperandGenerator(InstructionSelector* selector)
: OperandGenerator(selector) {}
- InstructionOperand* UseOperand(Node* node, InstructionCode opcode) {
+ InstructionOperand UseOperand(Node* node, InstructionCode opcode) {
if (CanBeImmediate(node, opcode)) {
return UseImmediate(node);
}
@@ -91,9 +91,9 @@ static void VisitBinop(InstructionSelector* selector, Node* node,
InstructionCode opcode, FlagsContinuation* cont) {
MipsOperandGenerator g(selector);
Int32BinopMatcher m(node);
- InstructionOperand* inputs[4];
+ InstructionOperand inputs[4];
size_t input_count = 0;
- InstructionOperand* outputs[2];
+ InstructionOperand outputs[2];
size_t output_count = 0;
inputs[input_count++] = g.UseRegister(m.left().node());
@@ -162,7 +162,7 @@ void InstructionSelector::VisitLoad(Node* node) {
Emit(opcode | AddressingModeField::encode(kMode_MRI),
g.DefineAsRegister(node), g.UseRegister(base), g.UseImmediate(index));
} else {
- InstructionOperand* addr_reg = g.TempRegister();
+ InstructionOperand addr_reg = g.TempRegister();
Emit(kMipsAdd | AddressingModeField::encode(kMode_None), addr_reg,
g.UseRegister(index), g.UseRegister(base));
// Emit desired load opcode, using temp addr_reg.
@@ -185,8 +185,8 @@ void InstructionSelector::VisitStore(Node* node) {
// TODO(dcarney): refactor RecordWrite function to take temp registers
// and pass them here instead of using fixed regs
// TODO(dcarney): handle immediate indices.
- InstructionOperand* temps[] = {g.TempRegister(t1), g.TempRegister(t2)};
- Emit(kMipsStoreWriteBarrier, NULL, g.UseFixed(base, t0),
+ InstructionOperand temps[] = {g.TempRegister(t1), g.TempRegister(t2)};
+ Emit(kMipsStoreWriteBarrier, g.NoOutput(), g.UseFixed(base, t0),
g.UseFixed(index, t1), g.UseFixed(value, t2), arraysize(temps), temps);
return;
}
@@ -217,15 +217,15 @@ void InstructionSelector::VisitStore(Node* node) {
}
if (g.CanBeImmediate(index, opcode)) {
- Emit(opcode | AddressingModeField::encode(kMode_MRI), NULL,
+ Emit(opcode | AddressingModeField::encode(kMode_MRI), g.NoOutput(),
g.UseRegister(base), g.UseImmediate(index), g.UseRegister(value));
} else {
- InstructionOperand* addr_reg = g.TempRegister();
+ InstructionOperand addr_reg = g.TempRegister();
Emit(kMipsAdd | AddressingModeField::encode(kMode_None), addr_reg,
g.UseRegister(index), g.UseRegister(base));
// Emit desired store opcode, using temp addr_reg.
- Emit(opcode | AddressingModeField::encode(kMode_MRI), NULL, addr_reg,
- g.TempImmediate(0), g.UseRegister(value));
+ Emit(opcode | AddressingModeField::encode(kMode_MRI), g.NoOutput(),
+ addr_reg, g.TempImmediate(0), g.UseRegister(value));
}
}
@@ -290,7 +290,7 @@ void InstructionSelector::VisitInt32Mul(Node* node) {
return;
}
if (base::bits::IsPowerOfTwo32(value - 1)) {
- InstructionOperand* temp = g.TempRegister();
+ InstructionOperand temp = g.TempRegister();
Emit(kMipsShl | AddressingModeField::encode(kMode_None), temp,
g.UseRegister(m.left().node()),
g.TempImmediate(WhichPowerOf2(value - 1)));
@@ -299,7 +299,7 @@ void InstructionSelector::VisitInt32Mul(Node* node) {
return;
}
if (base::bits::IsPowerOfTwo32(value + 1)) {
- InstructionOperand* temp = g.TempRegister();
+ InstructionOperand temp = g.TempRegister();
Emit(kMipsShl | AddressingModeField::encode(kMode_None), temp,
g.UseRegister(m.left().node()),
g.TempImmediate(WhichPowerOf2(value + 1)));
@@ -466,12 +466,12 @@ void InstructionSelector::VisitCall(Node* node) {
// Possibly align stack here for functions.
int push_count = buffer.pushed_nodes.size();
if (push_count > 0) {
- Emit(kMipsStackClaim | MiscField::encode(push_count), NULL);
+ Emit(kMipsStackClaim | MiscField::encode(push_count), g.NoOutput());
}
int slot = buffer.pushed_nodes.size() - 1;
for (auto i = buffer.pushed_nodes.rbegin(); i != buffer.pushed_nodes.rend();
++i) {
- Emit(kMipsStoreToStackSlot | MiscField::encode(slot), nullptr,
+ Emit(kMipsStoreToStackSlot | MiscField::encode(slot), g.NoOutput(),
g.UseRegister(*i));
slot--;
}
@@ -493,7 +493,7 @@ void InstructionSelector::VisitCall(Node* node) {
opcode |= MiscField::encode(descriptor->flags());
// Emit the call instruction.
- InstructionOperand** first_output =
+ InstructionOperand* first_output =
buffer.outputs.size() > 0 ? &buffer.outputs.front() : NULL;
Instruction* call_instr =
Emit(opcode, buffer.outputs.size(), first_output,
@@ -530,15 +530,15 @@ void InstructionSelector::VisitCheckedLoad(Node* node) {
UNREACHABLE();
return;
}
- InstructionOperand* offset_operand = g.CanBeImmediate(offset, opcode)
- ? g.UseImmediate(offset)
- : g.UseRegister(offset);
+ InstructionOperand offset_operand = g.CanBeImmediate(offset, opcode)
+ ? g.UseImmediate(offset)
+ : g.UseRegister(offset);
- InstructionOperand* length_operand =
- (!g.CanBeImmediate(offset, opcode)) ? g.CanBeImmediate(length, opcode)
- ? g.UseImmediate(length)
- : g.UseRegister(length)
- : g.UseRegister(length);
+ InstructionOperand length_operand = (!g.CanBeImmediate(offset, opcode))
+ ? g.CanBeImmediate(length, opcode)
+ ? g.UseImmediate(length)
+ : g.UseRegister(length)
+ : g.UseRegister(length);
Emit(opcode | AddressingModeField::encode(kMode_MRI),
g.DefineAsRegister(node), offset_operand, length_operand,
@@ -574,18 +574,19 @@ void InstructionSelector::VisitCheckedStore(Node* node) {
UNREACHABLE();
return;
}
- InstructionOperand* offset_operand = g.CanBeImmediate(offset, opcode)
- ? g.UseImmediate(offset)
- : g.UseRegister(offset);
-
- InstructionOperand* length_operand =
- (!g.CanBeImmediate(offset, opcode)) ? g.CanBeImmediate(length, opcode)
- ? g.UseImmediate(length)
- : g.UseRegister(length)
- : g.UseRegister(length);
-
- Emit(opcode | AddressingModeField::encode(kMode_MRI), nullptr, offset_operand,
- length_operand, g.UseRegister(value), g.UseRegister(buffer));
+ InstructionOperand offset_operand = g.CanBeImmediate(offset, opcode)
+ ? g.UseImmediate(offset)
+ : g.UseRegister(offset);
+
+ InstructionOperand length_operand = (!g.CanBeImmediate(offset, opcode))
+ ? g.CanBeImmediate(length, opcode)
+ ? g.UseImmediate(length)
+ : g.UseRegister(length)
+ : g.UseRegister(length);
+
+ Emit(opcode | AddressingModeField::encode(kMode_MRI), g.NoOutput(),
+ offset_operand, length_operand, g.UseRegister(value),
+ g.UseRegister(buffer));
}
@@ -593,12 +594,13 @@ namespace {
// Shared routine for multiple compare operations.
static void VisitCompare(InstructionSelector* selector, InstructionCode opcode,
- InstructionOperand* left, InstructionOperand* right,
+ InstructionOperand left, InstructionOperand right,
FlagsContinuation* cont) {
MipsOperandGenerator g(selector);
opcode = cont->Encode(opcode);
if (cont->IsBranch()) {
- selector->Emit(opcode, NULL, left, right, g.Label(cont->true_block()),
+ selector->Emit(opcode, g.NoOutput(), left, right,
+ g.Label(cont->true_block()),
g.Label(cont->false_block()))->MarkAsControl();
} else {
DCHECK(cont->IsSet());
@@ -725,9 +727,9 @@ void VisitWordCompareZero(InstructionSelector* selector, Node* user,
// Continuation could not be combined with a compare, emit compare against 0.
MipsOperandGenerator g(selector);
InstructionCode const opcode = cont->Encode(kMipsCmp);
- InstructionOperand* const value_operand = g.UseRegister(value);
+ InstructionOperand const value_operand = g.UseRegister(value);
if (cont->IsBranch()) {
- selector->Emit(opcode, nullptr, value_operand, g.TempImmediate(0),
+ selector->Emit(opcode, g.NoOutput(), value_operand, g.TempImmediate(0),
g.Label(cont->true_block()),
g.Label(cont->false_block()))->MarkAsControl();
} else {
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