[llvm] 08075a7 - Revert f7381a795ab235d34c94eaf01dc880eb5b89619d

[Alina Sbirlea via llvm-commits]

Author: Alina Sbirlea
Date: 2022-04-06T16:06:14-07:00
New Revision: 08075a7ee881f3584da8eeee15b4d7dae9fe5536

URL: https://github.com/llvm/llvm-project/commit/08075a7ee881f3584da8eeee15b4d7dae9fe5536
DIFF: https://github.com/llvm/llvm-project/commit/08075a7ee881f3584da8eeee15b4d7dae9fe5536.diff

LOG: Revert f7381a795ab235d34c94eaf01dc880eb5b89619d

Roll-forward 29fada4a3d3db309f11f7fa7a0c61cd4021e9947.
Issue triggered was due to UB.

Differential Revision: https://reviews.llvm.org/D121987

Added: 
    

Modified: 
    llvm/lib/Transforms/Scalar/EarlyCSE.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Scalar/EarlyCSE.cpp b/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
index ac0cc9560c69d..331e9b429d4ba 100644
--- a/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
+++ b/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
@@ -598,10 +598,7 @@ class EarlyCSE {
            const TargetTransformInfo &TTI, DominatorTree &DT,
            AssumptionCache &AC, MemorySSA *MSSA)
       : TLI(TLI), TTI(TTI), DT(DT), AC(AC), SQ(DL, &TLI, &DT, &AC), MSSA(MSSA),
-        MSSAUpdater(std::make_unique<MemorySSAUpdater>(MSSA)) {
-    if (MSSA)
-      MSSA->ensureOptimizedUses();
-  }
+        MSSAUpdater(std::make_unique<MemorySSAUpdater>(MSSA)) {}
 
   bool run();