Truffle: refactorings

--HG--
extra : transplant_source : %FB%1C%039%BBh%D3%C6%1A%85%FA%0C%14O%BF%13%26UZH
Truffle: canonicalize inlined invoke usages during partial evaluation

--HG--
extra : transplant_source : vA%1FS/%B8%A1%DF_%0E%B3%A7b%7D%CF%CB%F44%2C/