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<div class="moz-cite-prefix">On 01/13/2015 10:09 AM, Chris Jung
wrote:<br>
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<blockquote cite="mid:ABF75BA6-5CA5-404C-B8B6-315544538A6B@jdsu.com"
type="cite">
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I have an Objective-C file that’s about 6000 lines long, which is
nearly all a NSArray of 550 items, each of which is a NSDictionary
with NSString/NSString and NSString/NSNumber key value pairs in
literal syntax. This code takes about 0.4s to compile if
optimizations are turned off. It takes about 8 minutes to compile
if -O1 is turned on. It takes about 13 minutes to compile if
"-fobjc-arc" option is given with -O1. The time-report indicates
that Dead Store Elimination optimization is taking the majority of
the time. Is it worth logging a bug or is that working as
intended?
</blockquote>
Please file a bug (with a reproducer). DSE really shouldn't be
anywhere near that slow.<br>
<br>
p.s. If you happen to have a performance profile handy, I'd be
curious to know where the slowdown was.<br>
<br>
Philip<br>
<br>
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