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trace compare_nil_ic state in --trace-ic output

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BUG=
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/15735020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14808 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
olivf@chromium.org 2013-05-24 15:20:48 +00:00
parent 2a28f53b18
commit 2952a77d0b
3 changed files with 25 additions and 3 deletions
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25
src/code-stubs.cc
View File

@ -434,6 +434,23 @@ void CompareNilICStub::Record(Handle<Object> object) {
}
void CompareNilICStub::Types::TraceTransition(Types to) const {
#ifdef DEBUG
if (!FLAG_trace_ic) return;
char buffer[100];
NoAllocationStringAllocator allocator(buffer,
static_cast<unsigned>(sizeof(buffer)));
StringStream stream(&allocator);
stream.Add("[CompareNilIC : ");
Print(&stream);
stream.Add("=>");
to.Print(&stream);
stream.Add("]\n");
stream.OutputToStdOut();
#endif
}
void CompareNilICStub::PrintName(StringStream* stream) {
stream->Add("CompareNilICStub_");
types_.Print(stream);
@ -578,17 +595,19 @@ void ToBooleanStub::Types::Print(StringStream* stream) const {
void ToBooleanStub::Types::TraceTransition(Types to) const {
#ifdef DEBUG
if (!FLAG_trace_ic) return;
char buffer[100];
NoAllocationStringAllocator allocator(buffer,
static_cast<unsigned>(sizeof(buffer)));
StringStream stream(&allocator);
stream.Add("[ToBooleanIC (");
stream.Add("[ToBooleanIC : ");
Print(&stream);
stream.Add("->");
stream.Add("=>");
to.Print(&stream);
stream.Add(")]\n");
stream.Add("]\n");
stream.OutputToStdOut();
#endif
}

1
src/code-stubs.h
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@ -1084,6 +1084,7 @@ class CompareNilICStub : public HydrogenCodeStub {
}
void Print(StringStream* stream) const;
void TraceTransition(Types to) const;
};
// At most 6 different types can be distinguished, because the Code object

2
src/ic.cc
View File

@ -2928,7 +2928,9 @@ MaybeObject* CompareNilIC::CompareNil(Handle<Object> object) {
// types must be supported as a result of the miss.
bool already_monomorphic = stub.IsMonomorphic();
CompareNilICStub::Types old_types = stub.GetTypes();
stub.Record(object);
old_types.TraceTransition(stub.GetTypes());
EqualityKind kind = stub.GetKind();
NilValue nil = stub.GetNilValue();