Reviewers: Mads Ager,
Description:
Preserve constant function transition when adding the same function.
This should help in cases like:
function Constructor() {
this.foo = constFunction;
this.bar = "baz";
}
for (...) {
o = new Constructor();
// Constant call IC will work.
o.foo();
// Inlined property load will see the same map.
use(o.bar);
}
This change also fixes a latent bug in custom call IC-s for strings
exposed by string-charcodeat.js.
Please review this at http://codereview.chromium.org/3160006/show
Affected files:
M src/ia32/stub-cache-ia32.cc
M src/objects-inl.h
M src/objects.h
M src/objects.cc
M src/property.h
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