Remove static id from VirtualStackSlot.

--HG--
extra : amend_source : a6dd68551572c8dc871286d6bbe379b97074c9c4
SimpleStackSlotAllocator: use an array instead of a HashMap.
Compare compressed flag in HotSpotObjectConstantImpl#equals and reference equality in HotSpotConstantReflectionProvider#constantEquals

--HG--
extra : transplant_source : %7FG%15y%85%8A%09%A0%23%C9nT%D8r%F7%0E%D6%28%14%AE
Add support for stable array constants

--HG--
extra : transplant_source : %00B%D8F%0E%7E%BE%D4%C4%7E%5CK%E4f%E2%81%00%F1%A5A
Refactor PartialEvaluatorCanonicalizer into custom ConstantReflectionProvider

--HG--
extra : transplant_source : c%1C%93%84%D7w-%60P4%D3%7C%E4X%3A%E3%F0f%7E%21
extra : histedit_source : 44f9bd2f7a75b00c8b339a5d4755b515f3c0aaf2%2C3522e2b249bd745c3b5b7e72e21a6ba06ebe84dc
Remove CustomCanonicalizer

--HG--
extra : transplant_source : %0C%D3%B5%3E%92%FFbC%D3%93%FC%5C%BD%81%C1%CF%97%D5%BC%03
extra : histedit_source : 78e6ed5edac7b4b1e7da6c8b989a02aed7499e55
Backed out changeset 42854d32b658