[LVer] Fix FIXME: hide addPHINodes, NFC

Since Ashutosh made findDefsUsedOutsideOfLoop public, we can clean this
up.

Now clients that don't compute DefsUsedOutsideOfLoop can just call
versionLoop() and computing DefsUsedOutsideOfLoop will happen
implicitly.  With that there is no reason to expose addPHINodes anymore.

Ashutosh, you can now drop the calls to findDefsUsedOutsideOfLoop and
addPHINodes in LVerLICM and things should just work.

llvm-svn: 245579

1 files changed, 6 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/Utils/LoopVersioning.cpp b/llvm/lib/Transforms/Utils/LoopVersioning.cpp
index 11f11ad..bfc877e 100644
--- a/llvm/lib/Transforms/Utils/LoopVersioning.cpp
+++ b/llvm/lib/Transforms/Utils/LoopVersioning.cpp
@@ -40,7 +40,8 @@ LoopVersioning::LoopVersioning(const LoopAccessInfo &LAInfo, Loop *L,
   assert(L->getLoopPreheader() && "No preheader");
 }
 
-void LoopVersioning::versionLoop() {
+void LoopVersioning::versionLoop(
+    const SmallVectorImpl<Instruction *> &DefsUsedOutside) {
   Instruction *FirstCheckInst;
   Instruction *MemRuntimeCheck;
   // Add the memcheck in the original preheader (this is empty initially).
@@ -77,6 +78,10 @@ void LoopVersioning::versionLoop() {
   // The loops merge in the original exit block.  This is now dominated by the
   // memchecking block.
   DT->changeImmediateDominator(VersionedLoop->getExitBlock(), MemCheckBB);
+
+  // Adds the necessary PHI nodes for the versioned loops based on the
+  // loop-defined values used outside of the loop.
+  addPHINodes(DefsUsedOutside);
 }
 
 void LoopVersioning::addPHINodes(