Huge slowdown introduced in r91449

classic Classic list List threaded Threaded
3 messages Options
Reply | Threaded
Open this post in threaded view
|

Huge slowdown introduced in r91449

Abramo Bagnara
Tracking a slowdown observed after a clang update, I've bisected the
problem to commit r91449.

r91448:
$ ~/llvm_opt/Release/bin/clang -w -fsyntax-only gcc.c

real 0m3.683s
user 0m3.354s
sys 0m0.325s

r91449:
$ time ~/llvm_opt/Release/bin/clang -w -fsyntax-only gcc.c

real 0m38.764s
user 0m38.378s
sys 0m0.374s

The very large source file gcc.c (22 MB) is from:

http://people.csail.mit.edu/smcc/projects/single-file-programs/
_______________________________________________
cfe-dev mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
Reply | Threaded
Open this post in threaded view
|

Re: Huge slowdown introduced in r91449

Daniel Dunbar
Please file a bug report for this, thanks!

 - Daniel

On Sat, Dec 26, 2009 at 3:06 AM, Abramo Bagnara <[hidden email]> wrote:

> Tracking a slowdown observed after a clang update, I've bisected the
> problem to commit r91449.
>
> r91448:
> $ ~/llvm_opt/Release/bin/clang -w -fsyntax-only gcc.c
>
> real    0m3.683s
> user    0m3.354s
> sys     0m0.325s
>
> r91449:
> $ time ~/llvm_opt/Release/bin/clang -w -fsyntax-only gcc.c
>
> real    0m38.764s
> user    0m38.378s
> sys     0m0.374s
>
> The very large source file gcc.c (22 MB) is from:
>
> http://people.csail.mit.edu/smcc/projects/single-file-programs/
> _______________________________________________
> cfe-dev mailing list
> [hidden email]
> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>

_______________________________________________
cfe-dev mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
Reply | Threaded
Open this post in threaded view
|

Re: Huge slowdown introduced in r91449

Abramo Bagnara
Il 26/12/2009 20:39, Daniel Dunbar ha scritto:
> Please file a bug report for this, thanks!

http://llvm.org/bugs/show_bug.cgi?id=5888
_______________________________________________
cfe-dev mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev