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Re: Out-of-sight compile times for calculate_loop_depth
- To: law at cygnus dot com
- Subject: Re: Out-of-sight compile times for calculate_loop_depth
- From: Joe Buck <jbuck at synopsys dot COM>
- Date: Tue, 8 Feb 2000 10:00:40 -0800 (PST)
- Cc: m dot hayes at elec dot canterbury dot ac dot nz (Michael Hayes), lucier at math dot purdue dot edu (Brad Lucier), gcc at gcc dot gnu dot org
> The advantage of the existing dominator algorithm is that it's very
> simple to understand and performs OK for reasonable code.
Unfortunately, many of us often generate C or C++ code mechanically
and the result may not be what you consider "reasonable". GCC still
needs to deal with code like this; a robust compiler doesn't fall down
because the perfectly valid input is "unreasonable".