On 13 December 2013 06:08, H. S. Teoh <[email protected]> wrote:
> On Thu, Dec 12, 2013 at 08:57:42PM +0100, Max Samukha wrote: > > On Thursday, 12 December 2013 at 17:56:12 UTC, Walter Bright wrote: > > > > >11. inline assembler being a part of the language rather than an > > >extension that is in a markedly different format for every > > >compiler > > > > Ahem. If we admit that x86 is not the only ISA in exsistence, then > > what is (under)specified here http://dlang.org/iasm.html is a > > platform-specific extension. > > I've always wondered about that. What is D supposed to do with asm > blocks when compiling for a CPU that *isn't* x86?? What *should* a > conforming compiler do? Translate x86 asm into the target CPU's > instructions? Abort compilation? None of those options sound > particularly appealing to me. > It occurs to me that a little sugar would be nice, rather than: version(x86) { asm { ... } } else version(ARM) { asm { ... } } Which appears basically everywhere an asm block does. 'asm' could optionally receive an architecture as argument, and lower to the version wrapper: asm(x86) { ... } else asm(ARM) { ... } (The 'else's in those examples seem unnecessary)
