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Jules Villard 766a16cd90 [clang] enforce that `instruction` always returns one SIL expression ... Summary: Previously, the type of `trans_result` contained a list of SIL expressions. However, most of the time we expect to get exactly one, and getting a different number is a soft(!) error, usually returning `-1`. This splits `trans_result` into `control`, which contains the information needed for temporary computation (hence when we don't necessarily know the return value yet), and a new version of `trans_result` that includes `control`, the previous `exps` list but replaced by a single `return` expression instead, and a couple other values that made sense to move out of `control`. This allows some flexibility in the frontend compared to enforcing exactly one return expression always: if they are not known yet we stick to `control` instead (see eg `compute_controls_to_parent`). This creates more garbage temporary identifiers, however they do not show up in the final cfg. Instead, we see that temporary IDs are now often not consecutive... The most painful complication is in the treatment of `DeclRefExpr`, which was actually returning *two* expressions: the method name and the `this` object. Now the method name is a separate (optional) field in `trans_result`. Reviewed By: mbouaziz Differential Revision: D7881088 fbshipit-source-id: 41ad3b5		7 years ago
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box.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
box.cpp.dot	[cfg] rename iCFG to cfg in dotty files	7 years ago
increment.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
increment.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
init.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
init.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
member_access.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
member_access.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
member_access_from_return.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
member_access_from_return.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
nested_assignment.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
nested_assignment.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
ptr_mem.cpp	[clang] do not attempt to translate pointer to member constructs	7 years ago
ptr_mem.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
reference_field.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
reference_field.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
reference_struct_e2e.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
reference_struct_e2e.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
reference_type_e2e.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
reference_type_e2e.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
temporary_lvalue.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
temporary_lvalue.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago
unbox.cpp	[tests] Clean up test files shared between frontend and endtoend tests	8 years ago
unbox.cpp.dot	[clang] enforce that `instruction` always returns one SIL expression	7 years ago