AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity

Restore performance of accesses to JSGlobalProxy after r22802

Browse Source 
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/446523002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22857 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
jkummerow@chromium.org 2014-08-05 10:44:17 +00:00
parent 5a2de1fced
commit e051112fc6
8 changed files with 41 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/arm/stub-cache-arm.cc
View File

@ -740,8 +740,8 @@ Register PropertyHandlerCompiler::CheckPrototypes(
prototype = handle(JSObject::cast(current_map->prototype()));
if (current_map->is_dictionary_map() &&
!current_map->IsJSGlobalObjectMap() &&
!current_map->IsJSGlobalProxyMap()) {
!current_map->IsJSGlobalObjectMap()) {
DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
if (!name->IsUniqueName()) {
DCHECK(name->IsString());
name = factory()->InternalizeString(Handle<String>::cast(name));
@ -768,6 +768,9 @@ Register PropertyHandlerCompiler::CheckPrototypes(
// Check access rights to the global object. This has to happen after
// the map check so that we know that the object is actually a global
// object.
// This allows us to install generated handlers for accesses to the
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
__ CheckAccessGlobalProxy(reg, scratch2, miss);
} else if (current_map->IsJSGlobalObjectMap()) {

7
src/arm64/stub-cache-arm64.cc
View File

@ -691,8 +691,8 @@ Register PropertyHandlerCompiler::CheckPrototypes(
prototype = handle(JSObject::cast(current_map->prototype()));
if (current_map->is_dictionary_map() &&
!current_map->IsJSGlobalObjectMap() &&
!current_map->IsJSGlobalProxyMap()) {
!current_map->IsJSGlobalObjectMap()) {
DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
if (!name->IsUniqueName()) {
DCHECK(name->IsString());
name = factory()->InternalizeString(Handle<String>::cast(name));
@ -724,6 +724,9 @@ Register PropertyHandlerCompiler::CheckPrototypes(
// Check access rights to the global object. This has to happen after
// the map check so that we know that the object is actually a global
// object.
// This allows us to install generated handlers for accesses to the
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
UseScratchRegisterScope temps(masm());
__ CheckAccessGlobalProxy(reg, scratch2, temps.AcquireX(), miss);

7
src/ia32/stub-cache-ia32.cc
View File

@ -708,8 +708,8 @@ Register PropertyHandlerCompiler::CheckPrototypes(
prototype = handle(JSObject::cast(current_map->prototype()));
if (current_map->is_dictionary_map() &&
!current_map->IsJSGlobalObjectMap() &&
!current_map->IsJSGlobalProxyMap()) {
!current_map->IsJSGlobalObjectMap()) {
DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
if (!name->IsUniqueName()) {
DCHECK(name->IsString());
name = factory()->InternalizeString(Handle<String>::cast(name));
@ -738,6 +738,9 @@ Register PropertyHandlerCompiler::CheckPrototypes(
// Check access rights to the global object. This has to happen after
// the map check so that we know that the object is actually a global
// object.
// This allows us to install generated handlers for accesses to the
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
__ CheckAccessGlobalProxy(reg, scratch1, scratch2, miss);
} else if (current_map->IsJSGlobalObjectMap()) {

6
src/ic.cc
View File

@ -211,6 +211,12 @@ static void LookupForRead(LookupIterator* it) {
break;
}
case LookupIterator::ACCESS_CHECK:
// PropertyHandlerCompiler::CheckPrototypes() knows how to emit
// access checks for global proxies.
if (it->GetHolder<JSObject>()->IsJSGlobalProxy() &&
it->HasAccess(v8::ACCESS_GET)) {
break;
}
return;
case LookupIterator::PROPERTY:
if (it->HasProperty()) return; // Yay!

7
src/mips/stub-cache-mips.cc
View File

@ -739,8 +739,8 @@ Register PropertyHandlerCompiler::CheckPrototypes(
prototype = handle(JSObject::cast(current_map->prototype()));
if (current_map->is_dictionary_map() &&
!current_map->IsJSGlobalObjectMap() &&
!current_map->IsJSGlobalProxyMap()) {
!current_map->IsJSGlobalObjectMap()) {
DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
if (!name->IsUniqueName()) {
DCHECK(name->IsString());
name = factory()->InternalizeString(Handle<String>::cast(name));
@ -767,6 +767,9 @@ Register PropertyHandlerCompiler::CheckPrototypes(
// Check access rights to the global object. This has to happen after
// the map check so that we know that the object is actually a global
// object.
// This allows us to install generated handlers for accesses to the
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
__ CheckAccessGlobalProxy(reg, scratch2, miss);
} else if (current_map->IsJSGlobalObjectMap()) {

7
src/mips64/stub-cache-mips64.cc
View File

@ -743,8 +743,8 @@ Register PropertyHandlerCompiler::CheckPrototypes(
prototype = handle(JSObject::cast(current_map->prototype()));
if (current_map->is_dictionary_map() &&
!current_map->IsJSGlobalObjectMap() &&
!current_map->IsJSGlobalProxyMap()) {
!current_map->IsJSGlobalObjectMap()) {
DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
if (!name->IsUniqueName()) {
DCHECK(name->IsString());
name = factory()->InternalizeString(Handle<String>::cast(name));
@ -777,6 +777,9 @@ Register PropertyHandlerCompiler::CheckPrototypes(
// Check access rights to the global object. This has to happen after
// the map check so that we know that the object is actually a global
// object.
// This allows us to install generated handlers for accesses to the
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
__ CheckAccessGlobalProxy(reg, scratch2, miss);
} else if (current_map->IsJSGlobalObjectMap()) {

7
src/x64/stub-cache-x64.cc
View File

@ -651,8 +651,8 @@ Register PropertyHandlerCompiler::CheckPrototypes(
prototype = handle(JSObject::cast(current_map->prototype()));
if (current_map->is_dictionary_map() &&
!current_map->IsJSGlobalObjectMap() &&
!current_map->IsJSGlobalProxyMap()) {
!current_map->IsJSGlobalObjectMap()) {
DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
if (!name->IsUniqueName()) {
DCHECK(name->IsString());
name = factory()->InternalizeString(Handle<String>::cast(name));
@ -685,6 +685,9 @@ Register PropertyHandlerCompiler::CheckPrototypes(
// Check access rights to the global object. This has to happen after
// the map check so that we know that the object is actually a global
// object.
// This allows us to install generated handlers for accesses to the
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
__ CheckAccessGlobalProxy(reg, scratch2, miss);
} else if (current_map->IsJSGlobalObjectMap()) {

7
src/x87/stub-cache-x87.cc
View File

@ -707,8 +707,8 @@ Register PropertyHandlerCompiler::CheckPrototypes(
prototype = handle(JSObject::cast(current_map->prototype()));
if (current_map->is_dictionary_map() &&
!current_map->IsJSGlobalObjectMap() &&
!current_map->IsJSGlobalProxyMap()) {
!current_map->IsJSGlobalObjectMap()) {
DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
if (!name->IsUniqueName()) {
DCHECK(name->IsString());
name = factory()->InternalizeString(Handle<String>::cast(name));
@ -737,6 +737,9 @@ Register PropertyHandlerCompiler::CheckPrototypes(
// Check access rights to the global object. This has to happen after
// the map check so that we know that the object is actually a global
// object.
// This allows us to install generated handlers for accesses to the
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
__ CheckAccessGlobalProxy(reg, scratch1, scratch2, miss);
} else if (current_map->IsJSGlobalObjectMap()) {