[PATCH] D12114: [LPM] Teach the legacy pass manager to support *using* an analysis without *requiring* it.

[Chandler Carruth via llvm-commits]

chandlerc added inline comments.

================
Comment at: include/llvm/PassAnalysisSupport.h:95
@@ +94,3 @@
+  template<class PassClass>
+  AnalysisUsage &addUsed() {
+    Used.push_back(&PassClass::ID);
----------------
hfinkel wrote:
> Should we call this addUsedIfAvailable, or similar, to make it clearer what this does (and, specifically, how it differs from addRequired)?
> 
Seems a small gain, but if you like. I don't really care. You (or others) give me a spelling.


http://reviews.llvm.org/D12114