[llvm] r276941 - Add verifyAnalysis for LCSSA.

[Michael Zolotukhin via llvm-commits]

Author: mzolotukhin
Date: Wed Jul 27 18:35:53 2016
New Revision: 276941

URL: http://llvm.org/viewvc/llvm-project?rev=276941&view=rev
Log:
Add verifyAnalysis for LCSSA.

Summary:
LCSSAWrapperPass currently doesn't override verifyAnalysis method, so pass
manager doesn't verify LCSSA. This patch adds the method so that we start
verifying LCSSA between loop passes.

Reviewers: chandlerc, sanjoy, hfinkel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D22888

Modified:
    llvm/trunk/lib/Transforms/Utils/LCSSA.cpp

Modified: llvm/trunk/lib/Transforms/Utils/LCSSA.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/LCSSA.cpp?rev=276941&r1=276940&r2=276941&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Utils/LCSSA.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/LCSSA.cpp Wed Jul 27 18:35:53 2016
@@ -315,6 +315,11 @@ struct LCSSAWrapperPass : public Functio
   ScalarEvolution *SE;
 
   bool runOnFunction(Function &F) override;
+  void verifyAnalysis() const override {
+    assert(
+        all_of(*LI, [&](Loop *L) { return L->isRecursivelyLCSSAForm(*DT); }) &&
+        "LCSSA form is broken!");
+  };
 
   /// This transformation requires natural loop information & requires that
   /// loop preheaders be inserted into the CFG.  It maintains both of these,