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Bring back RC identity cache #2691

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Merged
merged 2 commits into from
May 25, 2016
Merged

Bring back RC identity cache #2691

merged 2 commits into from
May 25, 2016

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trentxintong
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@trentxintong trentxintong commented May 25, 2016

Bring back rc identity cache. This takes off 0.7% of the 27.7% of the time we spent in SILoptimizer when building Stdlib.

This takes off 0.7% of the 27.7% of the time we spent in SILoptimizer when building
Stdlib.
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@swift-ci Please smoke test

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trentxintong commented May 25, 2016

The linux failure is very very likely to be unrelated. Also tested OSX ASAN locally. Should be safe to merge.
And we have a 88% hit rate in the RCCache when compiling the Stdlib

@trentxintong trentxintong merged commit 4e01226 into swiftlang:master May 25, 2016
@trentxintong trentxintong deleted the RCCache branch May 25, 2016 18:09
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