Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(744)

Unified Diff: src/x64/stub-cache-x64.cc

Issue 6686003: Refactor fast API call. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Next round Created 9 years, 9 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « src/stub-cache.cc ('k') | no next file » | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: src/x64/stub-cache-x64.cc
diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc
index e85f37e01637f509087c502dd56459c6c0ad7a9e..bc8effe6c151a28f931e5d12a378fef616480a97 100644
--- a/src/x64/stub-cache-x64.cc
+++ b/src/x64/stub-cache-x64.cc
@@ -1982,6 +1982,65 @@ MaybeObject* CallStubCompiler::CompileMathAbsCall(Object* object,
}
+MaybeObject* CallStubCompiler::CompileFastApiCall(
+ const CallOptimization& optimization,
+ Object* object,
+ JSObject* holder,
+ JSGlobalPropertyCell* cell,
+ JSFunction* function,
+ String* name) {
+ ASSERT(optimization.is_simple_api_call());
+ // Bail out if object is a global object as we don't want to
+ // repatch it to global receiver.
+ if (object->IsGlobalObject()) return Heap::undefined_value();
+ if (cell != NULL) return Heap::undefined_value();
+ int depth = optimization.GetPrototypeDepthOfExpectedType(
+ JSObject::cast(object), holder);
+ if (depth == kInvalidProtoDepth) return Heap::undefined_value();
+
+ Label miss, miss_before_stack_reserved;
+
+ GenerateNameCheck(name, &miss_before_stack_reserved);
+
+ // Get the receiver from the stack.
+ const int argc = arguments().immediate();
+ __ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize));
+
+ // Check that the receiver isn't a smi.
+ __ JumpIfSmi(rdx, &miss_before_stack_reserved);
+
+ __ IncrementCounter(&Counters::call_const, 1);
+ __ IncrementCounter(&Counters::call_const_fast_api, 1);
+
+ // Allocate space for v8::Arguments implicit values. Must be initialized
+ // before calling any runtime function.
+ __ subq(rsp, Immediate(kFastApiCallArguments * kPointerSize));
+
+ // Check that the maps haven't changed and find a Holder as a side effect.
+ CheckPrototypes(JSObject::cast(object), rdx, holder,
+ rbx, rax, rdi, name, depth, &miss);
+
+ // Move the return address on top of the stack.
+ __ movq(rax, Operand(rsp, 3 * kPointerSize));
+ __ movq(Operand(rsp, 0 * kPointerSize), rax);
+
+ MaybeObject* result = GenerateFastApiCall(masm(), optimization, argc);
+ if (result->IsFailure()) return result;
+
+ __ bind(&miss);
+ __ addq(rsp, Immediate(kFastApiCallArguments * kPointerSize));
+
+ __ bind(&miss_before_stack_reserved);
+ Object* obj;
+ { MaybeObject* maybe_obj = GenerateMissBranch();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
+
+ // Return the generated code.
+ return GetCode(function);
+}
+
+
MaybeObject* CallStubCompiler::CompileCallConstant(Object* object,
JSObject* holder,
JSFunction* function,
@@ -1997,20 +2056,18 @@ MaybeObject* CallStubCompiler::CompileCallConstant(Object* object,
// rsp[(argc + 1) * 8] : argument 0 = receiver
// -----------------------------------
- SharedFunctionInfo* function_info = function->shared();
- if (function_info->HasBuiltinFunctionId()) {
- BuiltinFunctionId id = function_info->builtin_function_id();
+ if (HasCustomCallGenerator(function)) {
MaybeObject* maybe_result = CompileCustomCall(
- id, object, holder, NULL, function, name);
+ object, holder, NULL, function, name);
Object* result;
if (!maybe_result->ToObject(&result)) return maybe_result;
// undefined means bail out to regular compiler.
if (!result->IsUndefined()) return result;
}
- Label miss_in_smi_check;
+ Label miss;
- GenerateNameCheck(name, &miss_in_smi_check);
+ GenerateNameCheck(name, &miss);
// Get the receiver from the stack.
const int argc = arguments().immediate();
@@ -2018,42 +2075,25 @@ MaybeObject* CallStubCompiler::CompileCallConstant(Object* object,
// Check that the receiver isn't a smi.
if (check != NUMBER_CHECK) {
- __ JumpIfSmi(rdx, &miss_in_smi_check);
+ __ JumpIfSmi(rdx, &miss);
}
// Make sure that it's okay not to patch the on stack receiver
// unless we're doing a receiver map check.
ASSERT(!object->IsGlobalObject() || check == RECEIVER_MAP_CHECK);
- CallOptimization optimization(function);
- int depth = kInvalidProtoDepth;
- Label miss;
-
+ SharedFunctionInfo* function_info = function->shared();
switch (check) {
case RECEIVER_MAP_CHECK:
__ IncrementCounter(&Counters::call_const, 1);
- if (optimization.is_simple_api_call() && !object->IsGlobalObject()) {
- depth = optimization.GetPrototypeDepthOfExpectedType(
- JSObject::cast(object), holder);
- }
-
- if (depth != kInvalidProtoDepth) {
- __ IncrementCounter(&Counters::call_const_fast_api, 1);
-
- // Allocate space for v8::Arguments implicit values. Must be initialized
- // before to call any runtime function.
- __ subq(rsp, Immediate(kFastApiCallArguments * kPointerSize));
- }
-
// Check that the maps haven't changed.
CheckPrototypes(JSObject::cast(object), rdx, holder,
- rbx, rax, rdi, name, depth, &miss);
+ rbx, rax, rdi, name, &miss);
// Patch the receiver on the stack with the global proxy if
// necessary.
if (object->IsGlobalObject()) {
- ASSERT(depth == kInvalidProtoDepth);
__ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
__ movq(Operand(rsp, (argc + 1) * kPointerSize), rdx);
}
@@ -2123,27 +2163,10 @@ MaybeObject* CallStubCompiler::CompileCallConstant(Object* object,
UNREACHABLE();
}
- if (depth != kInvalidProtoDepth) {
- // Move the return address on top of the stack.
- __ movq(rax, Operand(rsp, 3 * kPointerSize));
- __ movq(Operand(rsp, 0 * kPointerSize), rax);
-
- // rsp[2 * kPointerSize] is uninitialized, rsp[3 * kPointerSize] contains
- // duplicate of return address and will be overwritten.
- MaybeObject* result = GenerateFastApiCall(masm(), optimization, argc);
- if (result->IsFailure()) return result;
- } else {
- __ InvokeFunction(function, arguments(), JUMP_FUNCTION);
- }
+ __ InvokeFunction(function, arguments(), JUMP_FUNCTION);
// Handle call cache miss.
__ bind(&miss);
- if (depth != kInvalidProtoDepth) {
- __ addq(rsp, Immediate(kFastApiCallArguments * kPointerSize));
- }
-
- // Handle call cache miss.
- __ bind(&miss_in_smi_check);
Object* obj;
{ MaybeObject* maybe_obj = GenerateMissBranch();
if (!maybe_obj->ToObject(&obj)) return maybe_obj;
@@ -2238,11 +2261,9 @@ MaybeObject* CallStubCompiler::CompileCallGlobal(JSObject* object,
// rsp[(argc + 1) * 8] : argument 0 = receiver
// -----------------------------------
- SharedFunctionInfo* function_info = function->shared();
- if (function_info->HasBuiltinFunctionId()) {
- BuiltinFunctionId id = function_info->builtin_function_id();
+ if (HasCustomCallGenerator(function)) {
MaybeObject* maybe_result = CompileCustomCall(
- id, object, holder, cell, function, name);
+ object, holder, cell, function, name);
Object* result;
if (!maybe_result->ToObject(&result)) return maybe_result;
// undefined means bail out to regular compiler.
@@ -2960,7 +2981,7 @@ MaybeObject* KeyedLoadStubCompiler::CompileLoadSpecialized(JSObject* receiver) {
// ----------- S t a t e -------------
// -- rax : key
// -- rdx : receiver
- // -- esp[0] : return address
+ // -- rsp[0] : return address
// -----------------------------------
Label miss;
« no previous file with comments | « src/stub-cache.cc ('k') | no next file » | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698