[PATCH] Use invariants in LazyValueInfo

[Chandler Carruth]

================
Comment at: lib/Analysis/LazyValueInfo.cpp:720-730
@@ +719,13 @@
+
+static void findInvariantUsers(Value *V, SmallVector<Value *, 8> &Invs,
+                               const DataLayout *DL, Instruction *CxtI,
+                               const DominatorTree *DT,
+                               unsigned Depth = 0) {
+  // At depth 0 we're provided with the original value, at other depths, the
+  // possible opcodes are restricted to limit the cost of the search.
+  // For example:
+  // 0  V           V
+  // 1  icmp        add
+  // 2  invariant   icmp
+  // 3              invariant
+
----------------
See comment on the other patch, it will end up applying here as well.

http://reviews.llvm.org/D4511