[Bug middle-end/16266] [4.0 regression] gcc.dg/c99-intconst-1.c compilation is very slow

[dnovillo at redhat dot com]

------- Additional Comments From dnovillo at redhat dot com  2004-10-08 23:32 -------
Subject: Re:  [4.0 regression]
	gcc.dg/c99-intconst-1.c compilation is very slow

On Fri, 2004-10-08 at 19:11, joern dot rennecke at superh-support dot
com wrote:

> a) All or most of the speed regression comes from a
> slowdown in
>    the --enable-checking code (or more of it)
>
There is a significant amount of new checking code post-tree-ssa. 
However, I think I remember wondering why c99-intconst-1.c takes so long
to compile.

Can you compare pre-tree-ssa and current mainline both with checking
disabled?  ISTR this test generating tons of GIMPLE.


Diego.



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16266