24 ms·

Rust is still behind C, but I feel that's just a maturity issue. C has had nearly 50 years to get to where it is in performance Rust hasn't had 5.

steveklabnik 12y ago
I am a performance noob, but given that fortran can be faster than C due to increased information about aliasing, and given how much more aliasing information Rust has, I don't see why Rust couldn't eventually even beat C on certain kinds of things. (And obviously, aliasing is only a tiny part of performance, just something that comes to mind.) That said, I am FAR more concerned about shipping a solid 1.0 than on a maximum performance one. It'll be a while, but we'll get there.
- idbfs 12y ago
  A nitpick: C has been able to achieve the same performance as Fortran since C99 introduced the "restrict" keyword.
  - steveklabnik 12y ago
    I was reading the other day that Windows doesn't really support most of C99, is restrict part of that or not?
    - ygra 12y ago
      Visual Studio ships only with a C++ compiler. That doesn't mean you cannot use other C compilers on Windows. Still, there seems to be something similar since VS2005. »__restrict is similar to restrict from the C99 spec, but __restrict can be used in C++ or C programs.«: http://msdn.microsoft.com/library/5ft82fed.aspx http://msdn.microsoft.com/library/5ft82fed.aspx
      - steveklabnik 12y ago
        Ugh, yes, I should have said "MSVC++," or "Microsoft." Thank you.
      - fithisux 12y ago
        PellesC has a new release candidate. LCC-WIN32 (compatible with what standard???) has a steady stream of releases. Openwatcom v2 has also changes. VS is only good for VisualD.
    - hornetblack 12y ago
      MS specifically implemented __restrict: > __restrict is similar to restrict from the C99 spec, but __restrict can be used in C++ or C programs. http://msdn.microsoft.com/en-us/library/5ft82fed.aspx http://msdn.microsoft.com/en-us/library/5ft82fed.aspx
    - ternaryoperator 12y ago
      As of VS2013, MS supports almost the entire C99 spec.

steveklabnik 12y ago

I am a performance noob, but given that fortran can be faster than C due to increased information about aliasing, and given how much more aliasing information Rust has, I don't see why Rust couldn't eventually even beat C on certain kinds of things. (And obviously, aliasing is only a tiny part of performance, just something that comes to mind.) That said, I am FAR more concerned about shipping a solid 1.0 than on a maximum performance one. It'll be a while, but we'll get there.

idbfs 12y ago
A nitpick: C has been able to achieve the same performance as Fortran since C99 introduced the "restrict" keyword.
- steveklabnik 12y ago
  I was reading the other day that Windows doesn't really support most of C99, is restrict part of that or not?
  - ygra 12y ago
    Visual Studio ships only with a C++ compiler. That doesn't mean you cannot use other C compilers on Windows. Still, there seems to be something similar since VS2005. »__restrict is similar to restrict from the C99 spec, but __restrict can be used in C++ or C programs.«: http://msdn.microsoft.com/library/5ft82fed.aspx http://msdn.microsoft.com/library/5ft82fed.aspx
    - steveklabnik 12y ago
      Ugh, yes, I should have said "MSVC++," or "Microsoft." Thank you.
    - fithisux 12y ago
      PellesC has a new release candidate. LCC-WIN32 (compatible with what standard???) has a steady stream of releases. Openwatcom v2 has also changes. VS is only good for VisualD.
  - hornetblack 12y ago
    MS specifically implemented __restrict: > __restrict is similar to restrict from the C99 spec, but __restrict can be used in C++ or C programs. http://msdn.microsoft.com/en-us/library/5ft82fed.aspx http://msdn.microsoft.com/en-us/library/5ft82fed.aspx
  - ternaryoperator 12y ago
    As of VS2013, MS supports almost the entire C99 spec.