new patches using -fopt-info (issue5294043)
Thu Oct 20 00:03:00 GMT 2011
email@example.com (Rong Xu) writes:
> After some off-line discussion, we decided to use a more general approach
> to control the printing of optimization messages/warnings. We will
> introduce a new option -fopt-info:
> * fopt-info=0 or fno-opt-info: no message will be emitted.
> * fopt-info or fopt-info=1: emit important warnings and optimization
> messages with large performance impact.
> * fopt-info=2: warnings and optimization messages targeting power users.
> * fopt-info=3: informational messages for compiler developers.
It would be interested to have some warnings about missing SRA
opportunities in =1 or =2. I found that sometimes fixing those can give a
Right now a common case that prevents SRA on structure field
is simply a memset or memcpy.
firstname.lastname@example.org -- Speaking for myself only
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