prevent dead stores due to heapify pass

Signed-off-by: Jade Abraham <[email protected]>
chapel-lang · Dec 16, 2024 · 6eed618 · 6eed618
1 parent a8bd684
commit 6eed618
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/compiler/passes/parallel.cpp b/compiler/passes/parallel.cpp
@@ -1145,6 +1145,12 @@ makeHeapAllocations() {
           call->getStmtExpr()->insertBefore(new DefExpr(tmp));
           call->getStmtExpr()->insertBefore(new CallExpr(PRIM_MOVE, tmp, new CallExpr(PRIM_GET_MEMBER_VALUE, use->symbol(), heapType->getField(1))));
           use->replace(new SymExpr(tmp));
+          if (call-isPrimitive(PRIM_ZERO_VARIABLE)) {
+            // aftering zeroing the value, we need to set it back
+            // otherwise its a dead store
+            call->getStmtExpr()->insertAfter(
+              new CallExpr(PRIM_SET_MEMBER, use->symbol(), heapType->getField(1), tmp));
+          }
         }
       } else if (use->parentExpr)
         INT_FATAL(var, "unexpected case");