[PATCH] Instcombine (A|B) ^(A^B) to A&B

[David Majnemer]

LGTM with comments addressed.

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Comment at: test/Transforms/InstCombine/or-xor.ll:141-147
@@ +140,9 @@
+define i32 @test15(i32 %x, i32 %y) {
+  %1 = xor i32 %y, %x
+  %2 = or i32 %y, %x
+  %3 = xor i32 %2, %1
+  ret i32 %3
+; CHECK-LABEL: @test15(
+; CHECK-NEXT: %1 = and i32 %y, %x
+; CHECK-NEXT: ret i32 %1
+}
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All the other tests use names for their instructions, can you please do the same?

http://reviews.llvm.org/D4866