From: Aaron Ballman <aaron@aaronballman.com>
Date: Mon, 16 Feb 2015 18:21:19 +0000 (+0000)
Subject: MSVC 2013 supports std::forward_as_tuple, while MSVC 2012 did not; so we can move... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=7fcd74585a1705c621c6b61b3f2dd1d90621bbb4

MSVC 2013 supports std::forward_as_tuple, while MSVC 2012 did not; so we can move to using the improved API.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229414 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/LexicalScopes.cpp b/lib/CodeGen/LexicalScopes.cpp
index b621e3baee5..d71b0afdaec 100644
--- a/lib/CodeGen/LexicalScopes.cpp
+++ b/lib/CodeGen/LexicalScopes.cpp
@@ -168,11 +168,10 @@ LexicalScope *LexicalScopes::getOrCreateRegularScope(MDNode *Scope) {
   LexicalScope *Parent = nullptr;
   if (D.isLexicalBlock())
     Parent = getOrCreateLexicalScope(DebugLoc::getFromDILexicalBlock(Scope));
-  // FIXME: Use forward_as_tuple instead of make_tuple, once MSVC2012
-  // compatibility is no longer required.
-  I = LexicalScopeMap.emplace(std::piecewise_construct, std::make_tuple(Scope),
-                              std::make_tuple(Parent, DIDescriptor(Scope),
-                                              nullptr, false)).first;
+  I = LexicalScopeMap.emplace(std::piecewise_construct,
+                              std::forward_as_tuple(Scope),
+                              std::forward_as_tuple(Parent, DIDescriptor(Scope),
+                                                    nullptr, false)).first;
 
   if (!Parent) {
     assert(DIDescriptor(Scope).isSubprogram());
@@ -199,12 +198,11 @@ LexicalScope *LexicalScopes::getOrCreateInlinedScope(MDNode *ScopeNode,
   else
     Parent = getOrCreateInlinedScope(Scope.getContext(), InlinedAt);
 
-  // FIXME: Use forward_as_tuple instead of make_tuple, once MSVC2012
-  // compatibility is no longer required.
   I = InlinedLexicalScopeMap.emplace(std::piecewise_construct,
-                                     std::make_tuple(P),
-                                     std::make_tuple(Parent, Scope, InlinedAt,
-                                                     false)).first;
+                                     std::forward_as_tuple(P),
+                                     std::forward_as_tuple(Parent, Scope,
+                                                           InlinedAt, false))
+          .first;
   return &I->second;
 }