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Re: Alpha g++ 2.95.2 optimizer doesn't scale?
- To: Scott Davies <scottd at cs dot cmu dot edu>
- Subject: Re: Alpha g++ 2.95.2 optimizer doesn't scale?
- From: Richard Henderson <rth at cygnus dot com>
- Date: Sun, 10 Sep 2000 00:13:14 -0700
- Cc: gcc-bugs at gcc dot gnu dot org
- References: <200009092042.NAA27108@cygnus.com>
On Sat, Sep 09, 2000 at 04:42:19PM -0400, Scott Davies wrote:
> After the g++ on the Alpha I use was upgraded to 2.95.2, one of my
> source files now causes the compiler (namely, the cc1plus process) to
> exhaust the machine's virtual memory when compiled with optimization
> on ("-O"). This is on a monster machine with 4 gigabytes of RAM and
> many more gigabytes of swap space, and the source file is only 6200
> lines long. The file compiles fine with optimization turned off, and
> fine under Linux g++ 2.95.2 with optimization either on or off.
You'll have to provide a test case for anything meaningful to be done.
> A friend of mine tells me that a new optimizer has recently been added
> to the Alpha version of g++...
Not true.
r~