[PATCH] D32121: [MemorySSA] Stop tracking def-or-use blocks.

[bryant via Phabricator via llvm-commits]

bryant created this revision.
Herald added a subscriber: Prazek.

Unused because we no longer prune phi nodes.


Repository:
  rL LLVM

https://reviews.llvm.org/D32121

Files:
  lib/Transforms/Utils/MemorySSA.cpp


Index: lib/Transforms/Utils/MemorySSA.cpp
===================================================================
--- lib/Transforms/Utils/MemorySSA.cpp
+++ lib/Transforms/Utils/MemorySSA.cpp
@@ -1294,7 +1294,6 @@
   // could just look up the memory access for every possible instruction in the
   // stream.
   SmallPtrSet<BasicBlock *, 32> DefiningBlocks;
-  SmallPtrSet<BasicBlock *, 32> DefUseBlocks;
   // Go through each block, figure out where defs occur, and chain together all
   // the accesses.
   for (BasicBlock &B : F) {
@@ -1319,8 +1318,6 @@
     }
     if (InsertIntoDef)
       DefiningBlocks.insert(&B);
-    if (Accesses)
-      DefUseBlocks.insert(&B);
   }
   placePHINodes(DefiningBlocks, BBNumbers);
 


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