[PATCH] D20606: [PM] Schedule InstCombine after late LICM run, to clean up LCSSA nodes.

[Mehdi AMINI via llvm-commits]

joker.eph added inline comments.

================
Comment at: lib/Transforms/IPO/PassManagerBuilder.cpp:547
@@ -545,1 +546,3 @@
+    // Get rid of LCSSA nodes.
+    addInstructionCombiningPass(MPM);
   }
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InstCombine is expensive, do we have an alternative? What is the impact of not doing this cleanup here?


http://reviews.llvm.org/D20606