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Re: GCC 3.3 compile speed regression - AN ANSWER
- From: dewar at gnat dot com (Robert Dewar)
- To: austern at apple dot com, jsm28 at cam dot ac dot uk
- Cc: gcc at gcc dot gnu dot org, torvalds at transmeta dot com
- Date: Wed, 12 Feb 2003 07:23:48 -0500 (EST)
- Subject: Re: GCC 3.3 compile speed regression - AN ANSWER
> All of my measurements suggest that improving the speed of optimization
> phases is irrelevant. What's slow is the front end: parsing and
> semantic analysis. -O0 compilations are slow, not just -O3.
Well here is a data point that contradicts this conjecture. GNAT compilation
has also slowed down significantly. I will try to post some figures in the near
future. Since the GNAT front end is running on 2.8.1 and 3.2.x we have a direct
comparison which for sure does NOT include any influence from the C or C++
front end!