commit 2617ea675666c85aa8353bd8afc8b6d659f33637
author David Majnemer <david.majnemer@gmail.com> Tue Jun 09 18:05:33 2015 +0000
committer David Majnemer <david.majnemer@gmail.com> Tue Jun 09 18:05:33 2015 +0000
tree c2c35d2923f90c43d811a420589fa22beaf121d8
parent 0ebe35b27897f784df9239cf79d3a4b0674364e8

[ItaniumMangle] Mangle long double as __float128 for some Power targets

GCC mangles long double like __float128 in order to support
compatibility with ABI variants which had a different interpretation of
long double.

This fixes PR23791.

llvm-svn: 239421

clang/lib/AST/ItaniumMangle.cpp

diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index d07efae..968f030 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -2010,7 +2010,11 @@
   case BuiltinType::Half: Out << "Dh"; break;
   case BuiltinType::Float: Out << 'f'; break;
   case BuiltinType::Double: Out << 'd'; break;
-  case BuiltinType::LongDouble: Out << 'e'; break;
+  case BuiltinType::LongDouble:
+    Out << (getASTContext().getTargetInfo().useFloat128ManglingForLongDouble()
+                ? 'g'
+                : 'e');
+    break;
   case BuiltinType::NullPtr: Out << "Dn"; break;
 
 #define BUILTIN_TYPE(Id, SingletonId)