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Commit dba86292 authored by Milad Farazmand's avatar Milad Farazmand Committed by Commit Bot
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PPC/s390: [builtins] Remove ParameterCount uses from InvokeFunction(Code) 

Port 46648402

Original Commit Message:

    CallDebugOnFunctionCall was always using Registers and not Immediates.
    Then ParameterCount is not really needed. Since updating that, we
    could update other functions, e.g InvokeFunction, to only use
    registers too.

    Also removed now irrelevant variables, e.g definitely_mismatches.

R=solanes@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Ie0348998503bf4f416440f056e4296d22d064d4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1892171Reviewed-by: 's avatarJoran Siu <joransiu@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#64665}
parent f27919c3
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Showing with 159 additions and 255 deletions
src/builtins/ppc/builtins-ppc.cc
View file @ dba86292
......@@ -144,8 +144,7 @@ void Generate_JSBuiltinsConstructStubHelper(MacroAssembler* masm) {
// r6: new target
{
ConstantPoolUnavailableScope constant_pool_unavailable(masm);
ParameterCount actual(r3);
__ InvokeFunction(r4, r6, actual, CALL_FUNCTION);
__ InvokeFunctionWithNewTarget(r4, r6, r3, CALL_FUNCTION);
}
// Restore context from the frame.
......@@ -300,8 +299,7 @@ void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
// Call the function.
{
ConstantPoolUnavailableScope constant_pool_unavailable(masm);
ParameterCount actual(r3);
__ InvokeFunction(r4, r6, actual, CALL_FUNCTION);
__ InvokeFunctionWithNewTarget(r4, r6, r3, CALL_FUNCTION);
}
// ----------- S t a t e -------------
......@@ -2102,9 +2100,7 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
__ LoadHalfWord(
r5, FieldMemOperand(r5, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(r3);
ParameterCount expected(r5);
__ InvokeFunctionCode(r4, no_reg, expected, actual, JUMP_FUNCTION);
__ InvokeFunctionCode(r4, no_reg, r5, r3, JUMP_FUNCTION);
// The function is a "classConstructor", need to raise an exception.
__ bind(&class_constructor);
......
src/builtins/s390/builtins-s390.cc
View file @ dba86292
......@@ -139,8 +139,7 @@ void Generate_JSBuiltinsConstructStubHelper(MacroAssembler* masm) {
// r3: constructor function
// r5: new target
ParameterCount actual(r2);
__ InvokeFunction(r3, r5, actual, CALL_FUNCTION);
__ InvokeFunctionWithNewTarget(r3, r5, r2, CALL_FUNCTION);
// Restore context from the frame.
__ LoadP(cp, MemOperand(fp, ConstructFrameConstants::kContextOffset));
......@@ -293,8 +292,7 @@ void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
__ bind(&no_args);
// Call the function.
ParameterCount actual(r2);
__ InvokeFunction(r3, r5, actual, CALL_FUNCTION);
__ InvokeFunctionWithNewTarget(r3, r5, r2, CALL_FUNCTION);
// ----------- S t a t e -------------
// -- r0: constructor result
......@@ -2160,9 +2158,7 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
__ LoadLogicalHalfWordP(
r4, FieldMemOperand(r4, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(r2);
ParameterCount expected(r4);
__ InvokeFunctionCode(r3, no_reg, expected, actual, JUMP_FUNCTION);
__ InvokeFunctionCode(r3, no_reg, r4, r2, JUMP_FUNCTION);
// The function is a "classConstructor", need to raise an exception.
__ bind(&class_constructor);
......
src/codegen/ppc/macro-assembler-ppc.cc
View file @ dba86292
......@@ -1214,12 +1214,9 @@ void TurboAssembler::PrepareForTailCall(const ParameterCount& callee_args_count,
mr(sp, dst_reg);
}
void MacroAssembler::InvokePrologue(const ParameterCount& expected,
const ParameterCount& actual, Label* done,
bool* definitely_mismatches,
InvokeFlag flag) {
bool definitely_matches = false;
*definitely_mismatches = false;
void MacroAssembler::InvokePrologue(Register expected_parameter_count,
Register actual_parameter_count,
Label* done, InvokeFlag flag) {
Label regular_invoke;
// Check whether the expected and actual arguments count match. If not,
......@@ -1232,56 +1229,28 @@ void MacroAssembler::InvokePrologue(const ParameterCount& expected,
// up actual and expected registers according to the contract if values are
// passed in registers.
// The code below is made a lot easier because the calling code already sets
// up actual and expected registers according to the contract.
// ARM has some sanity checks as per below, considering add them for PPC
// DCHECK(actual.is_immediate() || actual.reg() == r3);
// DCHECK(expected.is_immediate() || expected.reg() == r5);
// DCHECK_EQ(actual_parameter_count, r3);
// DCHECK_EQ(expected_parameter_count, r5);
if (expected.is_immediate()) {
DCHECK(actual.is_immediate());
mov(r3, Operand(actual.immediate()));
if (expected.immediate() == actual.immediate()) {
definitely_matches = true;
} else {
const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel;
if (expected.immediate() == sentinel) {
// Don't worry about adapting arguments for builtins that
// don't want that done. Skip adaption code by making it look
// like we have a match between expected and actual number of
// arguments.
definitely_matches = true;
} else {
*definitely_mismatches = true;
mov(r5, Operand(expected.immediate()));
}
}
} else {
if (actual.is_immediate()) {
mov(r3, Operand(actual.immediate()));
cmpi(expected.reg(), Operand(actual.immediate()));
cmp(expected_parameter_count, actual_parameter_count);
beq(&regular_invoke);
} else {
cmp(expected.reg(), actual.reg());
beq(&regular_invoke);
}
}
if (!definitely_matches) {
Handle<Code> adaptor = BUILTIN_CODE(isolate(), ArgumentsAdaptorTrampoline);
if (flag == CALL_FUNCTION) {
Call(adaptor);
if (!*definitely_mismatches) {
b(done);
}
} else {
Jump(adaptor, RelocInfo::CODE_TARGET);
}
bind(&regular_invoke);
}
}
void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual) {
Register expected_parameter_count,
Register actual_parameter_count) {
Label skip_hook;
ExternalReference debug_hook_active =
......@@ -1294,22 +1263,17 @@ void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
{
// Load receiver to pass it later to DebugOnFunctionCall hook.
if (actual.is_reg()) {
ShiftLeftImm(r7, actual.reg(), Operand(kPointerSizeLog2));
ShiftLeftImm(r7, actual_parameter_count, Operand(kPointerSizeLog2));
LoadPX(r7, MemOperand(sp, r7));
} else {
LoadP(r7, MemOperand(sp, actual.immediate() << kPointerSizeLog2), r0);
}
FrameScope frame(this,
has_frame() ? StackFrame::NONE : StackFrame::INTERNAL);
if (expected.is_reg()) {
SmiTag(expected.reg());
Push(expected.reg());
}
if (actual.is_reg()) {
SmiTag(actual.reg());
Push(actual.reg());
}
SmiTag(expected_parameter_count);
Push(expected_parameter_count);
SmiTag(actual_parameter_count);
Push(actual_parameter_count);
if (new_target.is_valid()) {
Push(new_target);
}
......@@ -1319,29 +1283,28 @@ void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
if (new_target.is_valid()) {
Pop(new_target);
}
if (actual.is_reg()) {
Pop(actual.reg());
SmiUntag(actual.reg());
}
if (expected.is_reg()) {
Pop(expected.reg());
SmiUntag(expected.reg());
}
Pop(actual_parameter_count);
SmiUntag(actual_parameter_count);
Pop(expected_parameter_count);
SmiUntag(expected_parameter_count);
}
bind(&skip_hook);
}
void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual,
Register expected_parameter_count,
Register actual_parameter_count,
InvokeFlag flag) {
// You can't call a function without a valid frame.
DCHECK(flag == JUMP_FUNCTION || has_frame());
DCHECK(function == r4);
DCHECK_IMPLIES(flag == CALL_FUNCTION, has_frame());
DCHECK_EQ(function, r4);
DCHECK_IMPLIES(new_target.is_valid(), new_target == r6);
// On function call, call into the debugger if necessary.
CheckDebugHook(function, new_target, expected, actual);
CheckDebugHook(function, new_target, expected_parameter_count,
actual_parameter_count);
// Clear the new.target register if not given.
if (!new_target.is_valid()) {
......@@ -1349,9 +1312,7 @@ void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
}
Label done;
bool definitely_mismatches = false;
InvokePrologue(expected, actual, &done, &definitely_mismatches, flag);
if (!definitely_mismatches) {
InvokePrologue(expected_parameter_count, actual_parameter_count, &done, flag);
// We call indirectly through the code field in the function to
// allow recompilation to take effect without changing any of the
// call sites.
......@@ -1367,17 +1328,16 @@ void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
// Continue here if InvokePrologue does handle the invocation due to
// mismatched parameter counts.
bind(&done);
}
}
void MacroAssembler::InvokeFunction(Register fun, Register new_target,
const ParameterCount& actual,
void MacroAssembler::InvokeFunctionWithNewTarget(
Register fun, Register new_target, Register actual_parameter_count,
InvokeFlag flag) {
// You can't call a function without a valid frame.
DCHECK(flag == JUMP_FUNCTION || has_frame());
DCHECK_IMPLIES(flag == CALL_FUNCTION, has_frame());
// Contract with called JS functions requires that function is passed in r4.
DCHECK(fun == r4);
DCHECK_EQ(fun, r4);
Register expected_reg = r5;
Register temp_reg = r7;
......@@ -1388,24 +1348,25 @@ void MacroAssembler::InvokeFunction(Register fun, Register new_target,
FieldMemOperand(
temp_reg, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount expected(expected_reg);
InvokeFunctionCode(fun, new_target, expected, actual, flag);
InvokeFunctionCode(fun, new_target, expected_reg, actual_parameter_count,
flag);
}
void MacroAssembler::InvokeFunction(Register function,
const ParameterCount& expected,
const ParameterCount& actual,
Register expected_parameter_count,
Register actual_parameter_count,
InvokeFlag flag) {
// You can't call a function without a valid frame.
DCHECK(flag == JUMP_FUNCTION || has_frame());
DCHECK_IMPLIES(flag == CALL_FUNCTION, has_frame());
// Contract with called JS functions requires that function is passed in r4.
DCHECK(function == r4);
DCHECK_EQ(function, r4);
// Get the function and setup the context.
LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset));
InvokeFunctionCode(r4, no_reg, expected, actual, flag);
InvokeFunctionCode(r4, no_reg, expected_parameter_count,
actual_parameter_count, flag);
}
void MacroAssembler::MaybeDropFrames() {
......
src/codegen/ppc/macro-assembler-ppc.h
View file @ dba86292
......@@ -749,21 +749,21 @@ class V8_EXPORT_PRIVATE MacroAssembler : public TurboAssembler {
// Invoke the JavaScript function code by either calling or jumping.
void InvokeFunctionCode(Register function, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual, InvokeFlag flag);
Register expected_parameter_count,
Register actual_parameter_count, InvokeFlag flag);
// On function call, call into the debugger if necessary.
void CheckDebugHook(Register fun, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual);
Register expected_parameter_count,
Register actual_parameter_count);
// Invoke the JavaScript function in the given register. Changes the
// current context to the context in the function before invoking.
void InvokeFunction(Register function, Register new_target,
const ParameterCount& actual, InvokeFlag flag);
void InvokeFunction(Register function, const ParameterCount& expected,
const ParameterCount& actual, InvokeFlag flag);
void InvokeFunctionWithNewTarget(Register function, Register new_target,
Register actual_parameter_count,
InvokeFlag flag);
void InvokeFunction(Register function, Register expected_parameter_count,
Register actual_parameter_count, InvokeFlag flag);
void DebugBreak();
// Frame restart support
......@@ -950,9 +950,9 @@ class V8_EXPORT_PRIVATE MacroAssembler : public TurboAssembler {
static const int kSmiShift = kSmiTagSize + kSmiShiftSize;
// Helper functions for generating invokes.
void InvokePrologue(const ParameterCount& expected,
const ParameterCount& actual, Label* done,
bool* definitely_mismatches, InvokeFlag flag);
void InvokePrologue(Register expected_parameter_count,
Register actual_parameter_count, Label* done,
InvokeFlag flag);
// Compute memory operands for safepoint stack slots.
static int SafepointRegisterStackIndex(int reg_code);
......
src/codegen/s390/macro-assembler-s390.cc
View file @ dba86292
......@@ -1268,12 +1268,9 @@ void TurboAssembler::PrepareForTailCall(const ParameterCount& callee_args_count,
LoadRR(sp, dst_reg);
}
void MacroAssembler::InvokePrologue(const ParameterCount& expected,
const ParameterCount& actual, Label* done,
bool* definitely_mismatches,
InvokeFlag flag) {
bool definitely_matches = false;
*definitely_mismatches = false;
void MacroAssembler::InvokePrologue(Register expected_parameter_count,
Register actual_parameter_count,
Label* done, InvokeFlag flag) {
Label regular_invoke;
// Check whether the expected and actual arguments count match. If not,
......@@ -1283,59 +1280,27 @@ void MacroAssembler::InvokePrologue(const ParameterCount& expected,
// r4: expected arguments count
// The code below is made a lot easier because the calling code already sets
// up actual and expected registers according to the contract if values are
// passed in registers.
// up actual and expected registers according to the contract.
// ARM has some sanity checks as per below, considering add them for S390
DCHECK(actual.is_immediate() || actual.reg() == r2);
DCHECK(expected.is_immediate() || expected.reg() == r4);
if (expected.is_immediate()) {
DCHECK(actual.is_immediate());
mov(r2, Operand(actual.immediate()));
if (expected.immediate() == actual.immediate()) {
definitely_matches = true;
} else {
const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel;
if (expected.immediate() == sentinel) {
// Don't worry about adapting arguments for builtins that
// don't want that done. Skip adaption code by making it look
// like we have a match between expected and actual number of
// arguments.
definitely_matches = true;
} else {
*definitely_mismatches = true;
mov(r4, Operand(expected.immediate()));
}
}
} else {
if (actual.is_immediate()) {
mov(r2, Operand(actual.immediate()));
CmpPH(expected.reg(), Operand(actual.immediate()));
beq(&regular_invoke);
} else {
CmpP(expected.reg(), actual.reg());
DCHECK_EQ(actual_parameter_count, r2);
DCHECK_EQ(expected_parameter_count, r4);
CmpP(expected_parameter_count, actual_parameter_count);
beq(&regular_invoke);
}
}
if (!definitely_matches) {
Handle<Code> adaptor = BUILTIN_CODE(isolate(), ArgumentsAdaptorTrampoline);
if (flag == CALL_FUNCTION) {
Call(adaptor);
if (!*definitely_mismatches) {
b(done);
}
} else {
Jump(adaptor, RelocInfo::CODE_TARGET);
}
bind(&regular_invoke);
}
}
void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual) {
Register expected_parameter_count,
Register actual_parameter_count) {
Label skip_hook;
ExternalReference debug_hook_active =
......@@ -1346,23 +1311,17 @@ void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
{
// Load receiver to pass it later to DebugOnFunctionCall hook.
if (actual.is_reg()) {
ShiftLeftP(r6, actual.reg(), Operand(kSystemPointerSizeLog2));
ShiftLeftP(r6, actual_parameter_count, Operand(kSystemPointerSizeLog2));
LoadP(r6, MemOperand(sp, r6));
} else {
LoadP(r6, MemOperand(sp, actual.immediate() << kSystemPointerSizeLog2),
ip);
}
FrameScope frame(this,
has_frame() ? StackFrame::NONE : StackFrame::INTERNAL);
if (expected.is_reg()) {
SmiTag(expected.reg());
Push(expected.reg());
}
if (actual.is_reg()) {
SmiTag(actual.reg());
Push(actual.reg());
}
SmiTag(expected_parameter_count);
Push(expected_parameter_count);
SmiTag(actual_parameter_count);
Push(actual_parameter_count);
if (new_target.is_valid()) {
Push(new_target);
}
......@@ -1372,30 +1331,28 @@ void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
if (new_target.is_valid()) {
Pop(new_target);
}
if (actual.is_reg()) {
Pop(actual.reg());
SmiUntag(actual.reg());
}
if (expected.is_reg()) {
Pop(expected.reg());
SmiUntag(expected.reg());
}
Pop(actual_parameter_count);
SmiUntag(actual_parameter_count);
Pop(expected_parameter_count);
SmiUntag(expected_parameter_count);
}
bind(&skip_hook);
}
void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual,
Register expected_parameter_count,
Register actual_parameter_count,
InvokeFlag flag) {
// You can't call a function without a valid frame.
DCHECK(flag == JUMP_FUNCTION || has_frame());
DCHECK(function == r3);
DCHECK_IMPLIES(flag == CALL_FUNCTION, has_frame());
DCHECK_EQ(function, r3);
DCHECK_IMPLIES(new_target.is_valid(), new_target == r5);
// On function call, call into the debugger if necessary.
CheckDebugHook(function, new_target, expected, actual);
CheckDebugHook(function, new_target, expected_parameter_count,
actual_parameter_count);
// Clear the new.target register if not given.
if (!new_target.is_valid()) {
......@@ -1403,9 +1360,7 @@ void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
}
Label done;
bool definitely_mismatches = false;
InvokePrologue(expected, actual, &done, &definitely_mismatches, flag);
if (!definitely_mismatches) {
InvokePrologue(expected_parameter_count, actual_parameter_count, &done, flag);
// We call indirectly through the code field in the function to
// allow recompilation to take effect without changing any of the
// call sites.
......@@ -1421,17 +1376,16 @@ void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
// Continue here if InvokePrologue does handle the invocation due to
// mismatched parameter counts.
bind(&done);
}
}
void MacroAssembler::InvokeFunction(Register fun, Register new_target,
const ParameterCount& actual,
void MacroAssembler::InvokeFunctionWithNewTarget(
Register fun, Register new_target, Register actual_parameter_count,
InvokeFlag flag) {
// You can't call a function without a valid frame.
DCHECK(flag == JUMP_FUNCTION || has_frame());
DCHECK_IMPLIES(flag == CALL_FUNCTION, has_frame());
// Contract with called JS functions requires that function is passed in r3.
DCHECK(fun == r3);
DCHECK_EQ(fun, r3);
Register expected_reg = r4;
Register temp_reg = r6;
......@@ -1442,24 +1396,25 @@ void MacroAssembler::InvokeFunction(Register fun, Register new_target,
FieldMemOperand(temp_reg,
SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount expected(expected_reg);
InvokeFunctionCode(fun, new_target, expected, actual, flag);
InvokeFunctionCode(fun, new_target, expected_reg, actual_parameter_count,
flag);
}
void MacroAssembler::InvokeFunction(Register function,
const ParameterCount& expected,
const ParameterCount& actual,
Register expected_parameter_count,
Register actual_parameter_count,
InvokeFlag flag) {
// You can't call a function without a valid frame.
DCHECK(flag == JUMP_FUNCTION || has_frame());
DCHECK_IMPLIES(flag == CALL_FUNCTION, has_frame());
// Contract with called JS functions requires that function is passed in r3.
DCHECK(function == r3);
DCHECK_EQ(function, r3);
// Get the function and setup the context.
LoadP(cp, FieldMemOperand(r3, JSFunction::kContextOffset));
InvokeFunctionCode(r3, no_reg, expected, actual, flag);
InvokeFunctionCode(r3, no_reg, expected_parameter_count,
actual_parameter_count, flag);
}
void MacroAssembler::MaybeDropFrames() {
......
src/codegen/s390/macro-assembler-s390.h
View file @ dba86292
......@@ -1125,21 +1125,21 @@ class V8_EXPORT_PRIVATE MacroAssembler : public TurboAssembler {
// Invoke the JavaScript function code by either calling or jumping.
void InvokeFunctionCode(Register function, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual, InvokeFlag flag);
Register expected_parameter_count,
Register actual_parameter_count, InvokeFlag flag);
// On function call, call into the debugger if necessary.
void CheckDebugHook(Register fun, Register new_target,
const ParameterCount& expected,
const ParameterCount& actual);
Register expected_parameter_count,
Register actual_parameter_count);
// Invoke the JavaScript function in the given register. Changes the
// current context to the context in the function before invoking.
void InvokeFunction(Register function, Register new_target,
const ParameterCount& actual, InvokeFlag flag);
void InvokeFunction(Register function, const ParameterCount& expected,
const ParameterCount& actual, InvokeFlag flag);
void InvokeFunctionWithNewTarget(Register function, Register new_target,
Register actual_parameter_count,
InvokeFlag flag);
void InvokeFunction(Register function, Register expected_parameter_count,
Register actual_parameter_count, InvokeFlag flag);
// Frame restart support
void MaybeDropFrames();
......@@ -1276,9 +1276,9 @@ class V8_EXPORT_PRIVATE MacroAssembler : public TurboAssembler {
private:
static const int kSmiShift = kSmiTagSize + kSmiShiftSize;
// Helper functions for generating invokes.
void InvokePrologue(const ParameterCount& expected,
const ParameterCount& actual, Label* done,
bool* definitely_mismatches, InvokeFlag flag);
void InvokePrologue(Register expected_parameter_count,
Register actual_parameter_count, Label* done,
InvokeFlag flag);
// Compute memory operands for safepoint stack slots.
static int SafepointRegisterStackIndex(int reg_code);
......
src/debug/ppc/debug-ppc.cc
View file @ dba86292
......@@ -41,9 +41,7 @@ void DebugCodegen::GenerateFrameDropperTrampoline(MacroAssembler* masm) {
FieldMemOperand(r3, SharedFunctionInfo::kFormalParameterCountOffset));
__ mr(r5, r3);
ParameterCount dummy1(r5);
ParameterCount dummy2(r3);
__ InvokeFunction(r4, dummy1, dummy2, JUMP_FUNCTION);
__ InvokeFunction(r4, r5, r3, JUMP_FUNCTION);
}
const bool LiveEdit::kFrameDropperSupported = true;
......
src/debug/s390/debug-s390.cc
View file @ dba86292
......@@ -43,9 +43,7 @@ void DebugCodegen::GenerateFrameDropperTrampoline(MacroAssembler* masm) {
r2, FieldMemOperand(r2, SharedFunctionInfo::kFormalParameterCountOffset));
__ LoadRR(r4, r2);
ParameterCount dummy1(r4);
ParameterCount dummy2(r2);
__ InvokeFunction(r3, dummy1, dummy2, JUMP_FUNCTION);
__ InvokeFunction(r3, r4, r2, JUMP_FUNCTION);
}
const bool LiveEdit::kFrameDropperSupported = true;
......
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