src/x64/stub-cache-x64.cc - Issue 19588002: Fixed type feedback in presence of negative lookups.

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

Issue 19588002: Fixed type feedback in presence of negative lookups. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Added unit test. Created 7 years, 5 months ago

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Index: src/x64/stub-cache-x64.cc

diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc

index bde1d0b377073272e8dbfe163ef3c35aafcc03ec..7e4fdeabc4c313e4de8c06f0fe619ba4701ac3d4 100644

--- a/src/x64/stub-cache-x64.cc

+++ b/src/x64/stub-cache-x64.cc

@@ -1059,6 +1059,9 @@ Register StubCompiler::CheckPrototypes(Handle<JSObject> object,

int save_at_depth,

Label* miss,

PrototypeCheckType check) {

+ // Make sure that the type feedback oracle harvests the receiver map.

+ __ Move(scratch1, Handle<Map>(object->map()));

Handle<JSObject> first = object;

// Make sure there's no overlap between holder and object registers.

ASSERT(!scratch1.is(object_reg) && !scratch1.is(holder_reg));