TODO

General
#######

-Wredundant-decls
-Wnested-externs

Major C Features
################

C99 _Complex types
C11 _Thread_local / gcc __thread
C11 _Atomic

cc1
###

-fno-builtin
default to external memset calls, -ffreestanding to use builtin on

-f{function,data}-sections

out/gen-optimisations:
	rearrangement of 1+f()+1 to f() + 1 + 1 - avoid pre-call reg saves

__attribute__((pure))
- function with no side effects (e.g. strlen())

__attribute__((fastcall)), cdecl, etc
- see Windows name mangling - https://en.wikipedia.org/wiki/Name_mangling
[this is in the experimental/calling_conv branch]

code gen:
	Treat %rsp as a frame constant if alloca() and vlas aren't used (impl_reg_frame_const)

attempt to build:
	https://github.com/mit-pdos/xv6-public

cpp
###

fix dir-relative file opening (for #include <>):
	cc -E dir/x.c
	doesn't work, but
	cd dir; cc -E x.c
	does

macros over multiple lines
	#define a(x, y) x + y
	a(
		1,
		2
	)

Testing
#######

update bugs/