[fpc-devel] Proof of Concept ARC implementation

[Sven Barth]

On 20.11.2014 00:08, hinstance wrote:
> I dunno. Just wanted to see if it is going to work with implicit
> exceptions turned off. I rather dance around and fix memory leaks when
> they appear than have implicit try-except block in every procedure.

1. they are try-finally blocks
2. then you'll have to add try-except blocks and leave the procedure 
without error as otherwise the compiler generated decrement calls aren't 
executed

> I
> did measurements once; found out that each try-except adds increases
> stack usage by about 60 bytes each.

That's the size of the buffer used for setjump. On Win64 in 2.7.1 this 
size is 0 and in Win32 with 2.7.1 and the compiler compiled with 
TEST_WIN32_SEH it should be smaller as well. For any other target we'll 
need another exception handling mechanism (DWARF/Itanium exception 
handling).

Regards,
Sven