From 7fc772bbdc34ced480bef9aa6043f8e0980bb522 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu@google.com>
Date: Fri, 25 Nov 2022 23:59:45 -0800
Subject: [PATCH] [Scalar] Use std::optional in
 InductiveRangeCheckElimination.cpp (NFC)

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716
---
 .../lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp b/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
index 15a0e938c8ea..b50d197b5a30 100644
--- a/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
@@ -93,6 +93,7 @@
 #include <cassert>
 #include <iterator>
 #include <limits>
+#include <optional>
 #include <utility>
 #include <vector>
 
@@ -547,8 +548,8 @@ class LoopConstrainer {
   // space of the main loop.
 
   struct SubRanges {
-    Optional<const SCEV *> LowLimit;
-    Optional<const SCEV *> HighLimit;
+    std::optional<const SCEV *> LowLimit;
+    std::optional<const SCEV *> HighLimit;
   };
 
   // Compute a safe set of limits for the main loop to run in -- effectively the