Move the dominator verification code out of special code embedded within
the PassManager code into a regular verifyAnalysis method.

Also, reorganize loop verification. Make the LoopPass infrastructure
call verifyLoop as needed instead of having LoopInfo::verifyAnalysis
check every loop in the function after each looop pass. Add a new
command-line argument, -verify-loop-info, to enable the expensive
full checking.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82952 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Transforms/LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll b/test/Transforms/LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll
index f4ecbea..4fe6e21 100644
--- a/test/Transforms/LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll
+++ b/test/Transforms/LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll
@@ -1,4 +1,4 @@
-; RUN: opt < %s -scalarrepl -loopsimplify -licm -disable-output -verify-dom-info
+; RUN: opt < %s -scalarrepl -loopsimplify -licm -disable-output -verify-dom-info -verify-loop-info
 
 define void @inflate() {
 entry: