Ignore fenceinst for caching (#1878)

EnzymeAD · May 13, 2024 · 611912e · 611912e
1 parent d18f50c
commit 611912e
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/enzyme/Enzyme/EnzymeLogic.cpp b/enzyme/Enzyme/EnzymeLogic.cpp
@@ -327,6 +327,11 @@ struct CacheAnalysis {
         if (!inst2->mayWriteToMemory())
           return false;
 
+#if LLVM_VERSION_MAJOR >= 12
+        if (isa<FenceInst>(inst2))
+          return false;
+#endif
+
         if (unnecessaryBlocks.count(inst2->getParent())) {
           return false;
         }
@@ -352,6 +357,11 @@ struct CacheAnalysis {
                   if (!mid->mayWriteToMemory())
                     return false;
 
+#if LLVM_VERSION_MAJOR >= 12
+                  if (isa<FenceInst>(mid))
+                    return false;
+#endif
+
                   if (unnecessaryBlocks.count(mid->getParent())) {
                     return false;
                   }