[flang] [llvm] [mlir] [Flang]Fix for changed code at the end of AllocaIP. (PR #92430)

[Tom Eccles via llvm-commits]

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@@ -1203,6 +1204,9 @@ convertOmpParallel(omp::ParallelOp opInst, llvm::IRBuilderBase &builder,
         byRefVars.push_back(builder.CreateAlloca(
             moduleTranslation.convertType(reductionDecls[i].getType())));
       }
+
+      initBlock = splitBB(builder, true, "omp.reduction.init");
+      allocaIP = InsertPointTy(allocaIP.getBlock(), allocaIP.getBlock()->end());
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tblah wrote:

won't putting it at the end of the block put it after the terminator?

https://github.com/llvm/llvm-project/pull/92430