Index: lib/Transforms/Vectorize/LoopVectorize.cpp
===================================================================
--- lib/Transforms/Vectorize/LoopVectorize.cpp
+++ lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -3048,8 +3048,13 @@
 
   // Handle Stores:
   if (SI) {
-    assert(!Legal->isUniform(SI->getPointerOperand()) &&
-           "We do not allow storing to uniform addresses");
+    // TODO
+    // Quick workaround for PR36311 by commenting out the assert for which
+    // Legality already ensured will never trigger. Real fix is to avoid
+    // recomputing isUniform() here. Eventually, we should support some form
+    // of stores to uniform addresses.
+    // assert(!Legal->isUniform(SI->getPointerOperand()) &&
+    //        "We do not allow storing to uniform addresses");
     setDebugLocFromInst(Builder, SI);
 
     for (unsigned Part = 0; Part < UF; ++Part) {