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Re: [4.0 PATCH] Enable Tree-SRA at -O3 only for Ada
On Apr 5, 2005, at 17:26, Eric Botcazou wrote:
Given that I initially argued for that, I don't really disagree. But
GCC has
tons of optimization switches so the user would have to specifically
know
-ftree-sra to enable it. I therefore thought -O3 would be a good
compromise.
Yes, but as we know this optimization is broken now for Ada, simple
use of -O3 shouldn't enable this. I just spoke with Richard Kenner
and he agrees we should turn off tree-SRA for 4.0. If the remaining
front end bugs get fixed in the 4.0.1 timeframe, we can always consider
turning it back on.
A patch to disable tree-SRA by default for all optimization levels
is pre-approved for the 4.0 branch.
Also, there should be a documentation patch for this change.
Sure, I'll add a blurb to the "Optimize Options" of the docs.
Thanks, also for bringing up this issue. :-)
-Geert