Introduce recursive dumping/diffing of types.
1) Types are now quantifed into one of the following:
a) RecordType - structures/ unions/ classes.
b) EnumType - enumerated types.
c) QualifiedType - types with qualifiers intact.
d) PointerType - pointer to a type.
e) LvalueReferenceType
f) RvalueReferenceType
g) ArrayType
2) ABI diffing now diffs based on types directly / indirectly reachable
by function signatures / global variable types by default. Also added an option
to header-abi-diff:
-check-all-apis : Include changes to all APIs exported via exported
headers whether directly / indirectly used by function signatures /
global variable types or not.
3) Introduced an internal representation of abi information. This
enables us to switch formats of abi-dumps / abi-diffs more easily
without changing the AST parsing code. For example: In the future, if we
wanted to add options to view the abi-dumps in html / xml we could just
add classes which extended IRDumper and implement dumping methods.
4) The linked ABI dump of a shared library also includes a list of the
exported functions and objects collected from the .dynsym table. This makes it
possible to avoid false reports of ABI breakages when functions/ global
variables are moved to assembly files.
Test: abi-dumping and linking: make -j64 from ToT
abi_diffing: change parameter types directly, indirectly.
Ran tests/test.py with soong running the built tool, all tests passed.
Bug: 62060883
Bug: 63865902
Change-Id: Id9ef757165a1669049fde20bda4147d5074cc191
21 files changed
