[llvm] r363879 - [MemorySSA] Use GraphDiff info when computing IDF.

[Alina Sbirlea via llvm-commits]

Author: asbirlea
Date: Wed Jun 19 14:17:31 2019
New Revision: 363879

URL: http://llvm.org/viewvc/llvm-project?rev=363879&view=rev
Log:
[MemorySSA] Use GraphDiff info when computing IDF.

Summary:
When computing IDF for insert updates, ensure we use the snapshot CFG offered by GraphDiff.
Caught by D63389.

Reviewers: kuhar, george.burgess.iv

Subscribers: jlebar, Prazek, llvm-commits, Szelethus

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D63443

Modified:
    llvm/trunk/lib/Analysis/MemorySSAUpdater.cpp

Modified: llvm/trunk/lib/Analysis/MemorySSAUpdater.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/MemorySSAUpdater.cpp?rev=363879&r1=363878&r2=363879&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/MemorySSAUpdater.cpp (original)
+++ llvm/trunk/lib/Analysis/MemorySSAUpdater.cpp Wed Jun 19 14:17:31 2019
@@ -963,7 +963,7 @@ void MemorySSAUpdater::applyInsertUpdate
   // Compute IDF and add Phis in all IDF blocks that do not have one.
   SmallVector<BasicBlock *, 32> IDFBlocks;
   if (!BlocksToProcess.empty()) {
-    ForwardIDFCalculator IDFs(DT);
+    ForwardIDFCalculator IDFs(DT, GD);
     SmallPtrSet<BasicBlock *, 16> DefiningBlocks(BlocksToProcess.begin(),
                                                  BlocksToProcess.end());
     IDFs.setDefiningBlocks(DefiningBlocks);