From eb11fae6d08f479c0799db45860a98af528fa6e7 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sat, 28 Jul 2018 10:51:19 +0000
Subject: Vendor import of llvm trunk r338150:
 https://llvm.org/svn/llvm-project/llvm/trunk@338150

---
 lib/Object/COFFModuleDefinition.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'lib/Object/COFFModuleDefinition.cpp')

diff --git a/lib/Object/COFFModuleDefinition.cpp b/lib/Object/COFFModuleDefinition.cpp
index a571354648d6..c703071b86e0 100644
--- a/lib/Object/COFFModuleDefinition.cpp
+++ b/lib/Object/COFFModuleDefinition.cpp
@@ -37,6 +37,7 @@ enum Kind {
   Identifier,
   Comma,
   Equal,
+  EqualEqual,
   KwBase,
   KwConstant,
   KwData,
@@ -104,9 +105,10 @@ public:
     }
     case '=':
       Buf = Buf.drop_front();
-      // GNU dlltool accepts both = and ==.
-      if (Buf.startswith("="))
+      if (Buf.startswith("=")) {
         Buf = Buf.drop_front();
+        return Token(EqualEqual, "==");
+      }
       return Token(Equal, "=");
     case ',':
       Buf = Buf.drop_front();
@@ -282,6 +284,13 @@ private:
         E.Private = true;
         continue;
       }
+      if (Tok.K == EqualEqual) {
+        read();
+        E.AliasTarget = Tok.Value;
+        if (Machine == IMAGE_FILE_MACHINE_I386 && !isDecorated(E.AliasTarget, MingwDef))
+          E.AliasTarget = std::string("_").append(E.AliasTarget);
+        continue;
+      }
       unget();
       Info.Exports.push_back(E);
       return Error::success();
-- 
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