[cfe-commits] correct comparisons page
jsg at goblin.cx
Sat Sep 5 07:45:04 PDT 2009
Prototypes with a * have since been fixed,
Additionally it would nice if non specific/referenced claims
such as "very inefficient code" could at least be qualified.
And the GCC pro of
"does not require a C++ compiler to build it" should likely
be added to the PCC section, which is rather noticeable
when X86ISelDAGToDAG starts eating up 700MB or so of memory
when being compiled with gcc.
In similiar taste would be "does not require GNU make to build"
and "does not require GNU grep to run regressions", though
the later does not apply to clang but rather llvm "make check".
On Sat, Sep 05, 2009 at 10:35:17AM +0200, Jonathan Gray wrote:
> Prototypes using a VLA with * as the size apparently don't work when
> tested here.
> And I don't have a system tgmath.h here.
> Apart from that at least,
> inline keyword/semantics
> VLA (not prototypes with * for size ?)
> complex numbers, _Complex and _Imaginary types
> _Bool type
> ability to use abstract declarators everywhere allowed
> designated initialisers
> mixed type declarations/logic
> type declaration in for loop
> variadic macros
> multiple type qualifiers
> // comment
> restrict qualifier
> compound literals
> Many GCC extensions are supported such as inline assembly format/constraints,
> typeof, case ranges, attribute() etc as well.
> On Fri, Sep 04, 2009 at 05:25:19PM -0700, Chris Lattner wrote:
> > What parts of c99 does it support? Is it comperable to gccs support?
> > For example, does it support VLAs fully, including arrays with * as the
> > size, tgmath.h, complex, etc?
> > -Chris
> > On Sep 4, 2009, at 5:34 AM, Jonathan Gray <jsg at goblin.cx> wrote:
> >> PCC has supported C99 for a while now, so this statement
> >> should be removed.
> >> Index: comparison.html
> >> ===================================================================
> >> --- comparison.html (revision 80998)
> >> +++ comparison.html (working copy)
> >> @@ -184,7 +184,7 @@
> >> <ul>
> >> <li>PCC dates from the 1970's and has been dormant for most of
> >> that time.
> >> The clang + llvm communities are very active.</li>
> >> - <li>PCC doesn't support C99, Objective-C, and doesn't aim to
> >> support
> >> + <li>PCC doesn't support Objective-C, and doesn't aim to support
> >> C++.</li>
> >> <li>PCC's code generation is very limited compared to LLVM. It
> >> produces very
> >> inefficient code and does not support many important
> >> targets.</li>
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