various QOL improvements

[svhawkins]

1. symbol table should now contain 'hidden symbols' (symbols with names like: ".L[0-9]+") for better generation of string literals and the like 2. makefile contents are a bit dry, can be refactored to be a loop instead going through variables. --> LATER 3. B-Minor integers are 64 bit integers. it is currently that they are regular C integers, which are signed 32 bit. this only needs to change some signatures and declarations (and including stdint.h) 4. register structure should keep track of intermediate values from expressions for better error tracking and the like. this should be int64_t.

5. a test in test_typecheck.c can be made into multiple tests to mitigate/remove current memory leak there. 6. error output in test files is a bit verbose. find a way to put it into a different stream, error log file.

[svhawkins]

07.30.2023

• 22:25: B-Minor integers are now signed 64 bit. In struct expr's integer_literal member, which is now int64_t instead of 32 bit signed integer int.
• 22:31: Register structures now have member int64_t value for intermediate value tracking during code generation.

[svhawkins]

07.31.2023

• 23:51: Error output during typechecking and codegeneration no longer limited to stderr. Variables REG_ERR_OUT and ERR_OUT default to stderr, though can be changed from the main function. Other QOL improvements with this:
  • Adding a command line option to specify error output file
  • Adding a command line option to indicate whether errors are suppressed
  • Make flex + bison error file pointers also point to same ones

[svhawkins]

08.05.2023:

• implemented hidden symbols with tests
• there is now a command line option to toggle new symbol table flag: bool show_hidden via -s or --show_hidden. If true prints hidden symbols in table, by default ignored.

[svhawkins]

08.13.2023 21:32:

• Hidden symbols now have declarations made for them when their symbol is generated, allowing for all necessary symbols to now be in the same declaration list (well 2 FOR NOW since when trying to deallocate them as one causes segfault...)

08.20.2023: 13:44:

• All items but one have been addressed in branch minor-fixes and have been merged into codegen.

[svhawkins]

Not doing valgrind stuff for typechecker stuff. Shall do so in later issue.