This is just an experience report for those who might be
interested.
Given this pull request
(https://github.com/D-Programming-GDC/GDC/pull/456) I thought I'd
try testing a more recent GDC with my STM32 demo
(https://github.com/JinShil/stm32f42_discovery_demo) and see what
the state of things is. Here are my results.
TypeInfo Stubs
===============
I was able to reduce object.d down to the following:
-- object.d --
module object;
alias size_t = typeof(int.sizeof);
alias ptrdiff_t = typeof(cast(void*)0 - cast(void*)0);
alias string = immutable(char)[];
class Object
{ }
class TypeInfo
{ }
class TypeInfo_Const : TypeInfo
{
size_t getHash(in void *p) const nothrow { return 0; }
}
----------------------
I wasn't able to completely omit TypeInfo because for some reason
the compiler is still looking for `getHash` in `TypeInfo_Const`.
-- output from gdc --
object.d:1:1: error: class object.TypeInfo_Const is forward
referenced when looking for 'getHash'
module object;
^
cc1d: error: no property 'getHash' for type
'object.TypeInfo_Const'
-----------------------
But, most of the `TypeInfo` stubs are no longer required.
TypeInfo Bloat
===============
Unfortunately the TypeInfo bloat documented here
(https://issues.dlang.org/show_bug.cgi?id=14758) is still there.
I suppose that's to be expected as it appears the aforementioned
pull request only removed the need to write `TypeInfo` stubs.
Binary size for the STM32 demo is about 600kB when it should be
more like 6kB.
Compile Speed
=============
It takes about 1 minute 30 seconds to build and link the STM32
demo resulting in a 6kB binary. That's pretty bad, but I suspect
that's a DMD CTFE problem.
Mike
