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swift-mirror/include/swift/SILAnalysis
Michael Gottesman 254c784c94 [+0 self][pin removal] Teach pinremoval how to use RCIdentityAnalysis when removing pins.
Previously, we were being very conservative and were not trying to look through
any RCId uses. Now we understand how to look through RCIdentical instructions to
pair a pin and unpin. We also understand how to use the new getRCUses API on
RCIdentityAnalysis to get all uses of a value, looking through RCIdentical
instructions.

I also added some code to COWArrayOpts to teach it how to look through enum insts (which I needed).

Additionally I got stuck and added support for automatic indentation in Debug
statements. This is better than having to indent by hand every time.

There were no significant perf changes since this code was not being emitted by
the frontend. But without this +0 self causes COW to break.

rdar://20267677

Swift SVN r26529
2015-03-25 06:21:11 +00:00
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