[LLVMdev] really long time to compile

[Chris Lattner]

> Can anyone suggest any reasons why this seemingly-innocuous (though
> stupid-looking) excerpt from gnu fileutils 4.1 would make llvm-gcc
> go so incredibly slowly? It doesn't seem to be a question of the
> size of the output.

I'll look into it.  That is a very, uh, interesting code snippet :)

-Chris

> Here's what I do:
>
> % time llvm-gcc -c sha24.c
> 56.840u 0.050s 1:07.05 84.8%    0+0k 0+0io 1050pf+0w
> % ls -l sha24.o
> -rw-r--r--    1 brg      brg          5784 2002-12-14 07:43 sha24.o
>
> The problem goes away if I use -S:
>
> % time llvm-gcc -S sha24.c
> 0.060u 0.010s 0:00.09 77.7%     0+0k 0+0io 548pf+0w
>
>

-Chris

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