From 57cc4c6dec942580388a164f226933ae586c4b90 Mon Sep 17 00:00:00 2001
From: micttyl <109993301+micttyl@users.noreply.github.com>
Date: Mon, 19 Sep 2022 11:22:01 -0700
Subject: [PATCH] Include Missing Libraries (#2193)

For better:
	`<iterator>` for `std::reverse_iterator`
	`Optional.h` for `llvm::Optional`
---
 toolchain/semantics/BUILD                    | 1 +
 toolchain/semantics/parse_subtree_consumer.h | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/toolchain/semantics/BUILD b/toolchain/semantics/BUILD
index 87cbbd2f8a18..a2e14e088611 100644
--- a/toolchain/semantics/BUILD
+++ b/toolchain/semantics/BUILD
@@ -30,6 +30,7 @@ cc_library(
     deps = [
         "//common:check",
         "//toolchain/parser:parse_tree",
+        "@llvm-project//llvm:Support",
     ],
 )
 
diff --git a/toolchain/semantics/parse_subtree_consumer.h b/toolchain/semantics/parse_subtree_consumer.h
index 2ea8fc7363aa..439db1a4e38f 100644
--- a/toolchain/semantics/parse_subtree_consumer.h
+++ b/toolchain/semantics/parse_subtree_consumer.h
@@ -5,6 +5,9 @@
 #ifndef CARBON_TOOLCHAIN_SEMANTICS_PARSE_SUBTREE_CONSUMER_H_
 #define CARBON_TOOLCHAIN_SEMANTICS_PARSE_SUBTREE_CONSUMER_H_
 
+#include <iterator>
+
+#include "llvm/ADT/Optional.h"
 #include "toolchain/parser/parse_tree.h"
 
 namespace Carbon {