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Re: [PATCH] Fix shrink-wrap bug with anticipating into loops (PR67778, PR68634)
- From: Bernd Schmidt <bschmidt at redhat dot com>
- To: Segher Boessenkool <segher at kernel dot crashing dot org>, gcc-patches at gcc dot gnu dot org
- Cc: jakub at redhat dot com
- Date: Thu, 3 Dec 2015 12:35:51 +0100
- Subject: Re: [PATCH] Fix shrink-wrap bug with anticipating into loops (PR67778, PR68634)
- Authentication-results: sourceware.org; auth=none
- References: <ebfaeba0a9c98ddf1f8ea795efc2fd3ba082fdfe dot 1449080153 dot git dot segher at kernel dot crashing dot org>
On 12/02/2015 07:21 PM, Segher Boessenkool wrote:
After shrink-wrapping has found the "tightest fit" for where to place
the prologue, it tries move it earlier (so that frame saves are run
earlier) -- but without copying any more basic blocks.
Another question would be - is there really a good reason to do this at all?
Bernd