commit 97468e9282b25639de0181c94eba6972519f4e84
author Alina Sbirlea <asbirlea@google.com> Thu Feb 21 21:13:34 2019 +0000
committer Alina Sbirlea <asbirlea@google.com> Thu Feb 21 21:13:34 2019 +0000
tree 14ab72969730f23fa40af65e84924277f156e496
parent 475042d5b1be6187094699a76ce03ce70b147a47

[MemorySSA & LoopPassManager] Update MemorySSA in formDedicatedExitBlocks.

MemorySSA is now updated when forming dedicated exit blocks.
Resolves PR40037.

llvm-svn: 354623

llvm/lib/Transforms/Utils/LoopUtils.cpp

diff --git a/llvm/lib/Transforms/Utils/LoopUtils.cpp b/llvm/lib/Transforms/Utils/LoopUtils.cpp
index 5539ff1..44f47bf 100644
--- a/llvm/lib/Transforms/Utils/LoopUtils.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUtils.cpp
@@ -19,6 +19,7 @@
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/LoopPass.h"
+#include "llvm/Analysis/MemorySSAUpdater.h"
 #include "llvm/Analysis/MustExecute.h"
 #include "llvm/Analysis/ScalarEvolution.h"
 #include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
@@ -46,6 +47,7 @@
 static const char *LLVMLoopDisableNonforced = "llvm.loop.disable_nonforced";
 
 bool llvm::formDedicatedExitBlocks(Loop *L, DominatorTree *DT, LoopInfo *LI,
+                                   MemorySSAUpdater *MSSAU,
                                    bool PreserveLCSSA) {
   bool Changed = false;
 
@@ -81,7 +83,7 @@
       return false;
 
     auto *NewExitBB = SplitBlockPredecessors(
-        BB, InLoopPredecessors, ".loopexit", DT, LI, nullptr, PreserveLCSSA);
+        BB, InLoopPredecessors, ".loopexit", DT, LI, MSSAU, PreserveLCSSA);
 
     if (!NewExitBB)
       LLVM_DEBUG(