[PATCH] Infer known bits from dominating conditions

[hfinkel at anl.gov]

LGTM, thanks!


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Comment at: test/Transforms/InstCombine/dom-conditions.ll:50
@@ +49,3 @@
+
+
+
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Comment at: test/Transforms/InstCombine/dom-conditions.ll:154
@@ +153,3 @@
+
+
+declare i32 @bar()
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Extra blank line.

http://reviews.llvm.org/D7708

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