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Ignore debug stepin in optimized code for array builtins.

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R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/251933004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21013 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
yangguo@chromium.org 2014-04-28 11:42:19 +00:00
parent 15e0189c97
commit 87394009b6
3 changed files with 61 additions and 130 deletions
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178
src/array.js
View File

@ -1147,28 +1147,16 @@ function ArrayFilter(f, receiver) {
var result = new $Array();
var accumulator = new InternalArray();
var accumulator_length = 0;
if (%DebugCallbackSupportsStepping(f)) {
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
%DebugPrepareStepInIfStepping(f);
if (%_CallFunction(receiver, element, i, array, f)) {
accumulator[accumulator_length++] = element;
}
var stepping = %_DebugCallbackSupportsStepping(f);
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
if (stepping) %DebugPrepareStepInIfStepping(f);
if (%_CallFunction(receiver, element, i, array, f)) {
accumulator[accumulator_length++] = element;
}
}
} else {
// This is a duplicate of the previous loop sans debug stepping.
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
if (%_CallFunction(receiver, element, i, array, f)) {
accumulator[accumulator_length++] = element;
}
}
}
// End of duplicate.
}
%MoveArrayContents(accumulator, result);
return result;
@ -1192,24 +1180,14 @@ function ArrayForEach(f, receiver) {
receiver = ToObject(receiver);
}
if (%DebugCallbackSupportsStepping(f)) {
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
%DebugPrepareStepInIfStepping(f);
%_CallFunction(receiver, element, i, array, f);
}
var stepping = %_DebugCallbackSupportsStepping(f);
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
if (stepping) %DebugPrepareStepInIfStepping(f);
%_CallFunction(receiver, element, i, array, f);
}
} else {
// This is a duplicate of the previous loop sans debug stepping.
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
%_CallFunction(receiver, element, i, array, f);
}
}
// End of duplicate.
}
}
@ -1233,24 +1211,14 @@ function ArraySome(f, receiver) {
receiver = ToObject(receiver);
}
if (%DebugCallbackSupportsStepping(f)) {
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
%DebugPrepareStepInIfStepping(f);
if (%_CallFunction(receiver, element, i, array, f)) return true;
}
var stepping = %_DebugCallbackSupportsStepping(f);
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
if (stepping) %DebugPrepareStepInIfStepping(f);
if (%_CallFunction(receiver, element, i, array, f)) return true;
}
} else {
// This is a duplicate of the previous loop sans debug stepping.
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
if (%_CallFunction(receiver, element, i, array, f)) return true;
}
}
// End of duplicate.
}
return false;
}
@ -1273,24 +1241,14 @@ function ArrayEvery(f, receiver) {
receiver = ToObject(receiver);
}
if (%DebugCallbackSupportsStepping(f)) {
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
%DebugPrepareStepInIfStepping(f);
if (!%_CallFunction(receiver, element, i, array, f)) return false;
}
var stepping = %_DebugCallbackSupportsStepping(f);
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
if (stepping) %DebugPrepareStepInIfStepping(f);
if (!%_CallFunction(receiver, element, i, array, f)) return false;
}
} else {
// This is a duplicate of the previous loop sans debug stepping.
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
if (!%_CallFunction(receiver, element, i, array, f)) return false;
}
}
// End of duplicate.
}
return true;
}
@ -1314,24 +1272,14 @@ function ArrayMap(f, receiver) {
var result = new $Array();
var accumulator = new InternalArray(length);
if (%DebugCallbackSupportsStepping(f)) {
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
%DebugPrepareStepInIfStepping(f);
accumulator[i] = %_CallFunction(receiver, element, i, array, f);
}
var stepping = %_DebugCallbackSupportsStepping(f);
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
if (stepping) %DebugPrepareStepInIfStepping(f);
accumulator[i] = %_CallFunction(receiver, element, i, array, f);
}
} else {
// This is a duplicate of the previous loop sans debug stepping.
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
accumulator[i] = %_CallFunction(receiver, element, i, array, f);
}
}
// End of duplicate.
}
%MoveArrayContents(accumulator, result);
return result;
@ -1471,27 +1419,14 @@ function ArrayReduce(callback, current) {
}
var receiver = %GetDefaultReceiver(callback);
if (%DebugCallbackSupportsStepping(callback)) {
for (; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
%DebugPrepareStepInIfStepping(callback);
current =
%_CallFunction(receiver, current, element, i, array, callback);
}
var stepping = %_DebugCallbackSupportsStepping(callback);
for (; i < length; i++) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
if (stepping) %DebugPrepareStepInIfStepping(callback);
current = %_CallFunction(receiver, current, element, i, array, callback);
}
} else {
// This is a duplicate of the previous loop sans debug stepping.
for (; i < length; i++) {
if (i in array) {
var element = array[i];
current =
%_CallFunction(receiver, current, element, i, array, callback);
}
}
// End of duplicate.
}
return current;
}
@ -1521,27 +1456,14 @@ function ArrayReduceRight(callback, current) {
}
var receiver = %GetDefaultReceiver(callback);
if (%DebugCallbackSupportsStepping(callback)) {
for (; i >= 0; i--) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
%DebugPrepareStepInIfStepping(callback);
current =
%_CallFunction(receiver, current, element, i, array, callback);
}
var stepping = %_DebugCallbackSupportsStepping(callback);
for (; i >= 0; i--) {
if (i in array) {
var element = array[i];
// Prepare break slots for debugger step in.
if (stepping) %DebugPrepareStepInIfStepping(callback);
current = %_CallFunction(receiver, current, element, i, array, callback);
}
} else {
// This is a duplicate of the previous loop sans debug stepping.
for (; i >= 0; i--) {
if (i in array) {
var element = array[i];
current =
%_CallFunction(receiver, current, element, i, array, callback);
}
}
// End of duplicate.
}
return current;
}

8
src/hydrogen.cc
View File

@ -11055,6 +11055,14 @@ void HOptimizedGraphBuilder::GenerateDebugBreakInOptimizedCode(
}
void HOptimizedGraphBuilder::GenerateDebugCallbackSupportsStepping(
CallRuntime* call) {
ASSERT(call->arguments()->length() == 1);
// Debugging is not supported in optimized code.
return ast_context()->ReturnValue(graph()->GetConstantFalse());
}
#undef CHECK_BAILOUT
#undef CHECK_ALIVE

5
src/runtime.h
View File

@ -97,7 +97,6 @@ namespace internal {
F(SetNativeFlag, 1, 1) \
F(SetInlineBuiltinFlag, 1, 1) \
F(StoreArrayLiteralElement, 5, 1) \
F(DebugCallbackSupportsStepping, 1, 1) \
F(DebugPrepareStepInIfStepping, 1, 1) \
F(DebugPendingExceptionInPromise, 2, 1) \
F(FlattenString, 1, 1) \
@ -707,7 +706,9 @@ namespace internal {
F(DoubleHi, 1, 1) \
F(DoubleLo, 1, 1) \
F(MathSqrt, 1, 1) \
F(MathLog, 1, 1)
F(MathLog, 1, 1) \
/* Debugger */ \
F(DebugCallbackSupportsStepping, 1, 1)
//---------------------------------------------------------------------------