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Don't check symbol literals for being symbols.

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R=fschneider@chromium.org

Review URL: http://codereview.chromium.org/7312024

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8563 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
vitalyr@chromium.org 2011-07-07 12:01:49 +00:00
parent c1e1e97b8b
commit 0f9b0ad8c3
2 changed files with 16 additions and 8 deletions
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15
src/hydrogen-instructions.cc
View File

@ -784,6 +784,21 @@ void HChange::PrintDataTo(StringStream* stream) {
}
HValue* HCheckInstanceType::Canonicalize() {
if (check_ == IS_STRING &&
!value()->type().IsUninitialized() &&
value()->type().IsString()) {
return NULL;
}
if (check_ == IS_SYMBOL &&
value()->IsConstant() &&
HConstant::cast(value())->handle()->IsSymbol()) {
return NULL;
}
return this;
}
void HCheckInstanceType::GetCheckInterval(InstanceType* first,
InstanceType* last) {
ASSERT(is_interval_check());

9
src/hydrogen-instructions.h
View File

@ -2003,14 +2003,7 @@ class HCheckInstanceType: public HUnaryOperation {
virtual void Verify();
#endif
virtual HValue* Canonicalize() {
if (!value()->type().IsUninitialized() &&
value()->type().IsString() &&
check_ == IS_STRING) {
return NULL;
}
return this;
}
virtual HValue* Canonicalize();
bool is_interval_check() const { return check_ <= LAST_INTERVAL_CHECK; }
void GetCheckInterval(InstanceType* first, InstanceType* last);