From 82d3df92110c2eb1cb7db8d9cbddc09eeca3d08a Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Fri, 20 Aug 2021 08:21:20 -0700
Subject: [PATCH] stdlib: enable prespecialization of generic metadata on
 Windows

Enable support for pre-speciailization of generic metadata on Windows.
---
 lib/IRGen/IRGenModule.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/IRGen/IRGenModule.cpp b/lib/IRGen/IRGenModule.cpp
index 1a4756c2bfc..b5b7ffc285a 100644
--- a/lib/IRGen/IRGenModule.cpp
+++ b/lib/IRGen/IRGenModule.cpp
@@ -1745,7 +1745,7 @@ bool IRGenModule::useDllStorage() { return ::useDllStorage(Triple); }
 
 bool IRGenModule::shouldPrespecializeGenericMetadata() {
   auto canPrespecializeTarget =
-      (Triple.isOSDarwin() ||
+      (Triple.isOSDarwin() || Triple.isOSWindows() ||
        (Triple.isOSLinux() && !(Triple.isARM() && Triple.isArch32Bit())));
   if (canPrespecializeTarget && isStandardLibrary()) {
     return IRGen.Opts.PrespecializeGenericMetadata;