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Re: incremental compiler project


On 09/04/2015 10:14 AM, Jonathan Wakely wrote:
On 4 September 2015 at 16:57, Manuel LÃpez-IbÃÃez wrote:
Clang++ is much faster yet it is doing more and tracking more data
than cc1plus.

How much faster these days? In my experience for optimized builds of
large files the difference is not so impressive (for unoptimized
builds clang is definitely much faster).
Which would generally indicate that the front-end and mandatory parts of the middle/backend are slow for GCC (relatively to clang/llvm), but the optimizers in GCC are faster.

That wouldn't be a huge surprise given home much time has been spent trying to keep the optimizers fast.

jeff


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