commit b14d1237740b76d3f9f9b116f1dab4564c4744ca
author Douglas Gregor <dgregor@apple.com> Sat Mar 13 18:23:07 2010 +0000
committer Douglas Gregor <dgregor@apple.com> Sat Mar 13 18:23:07 2010 +0000
tree 37f5000052e2162a19bb503fb402203e97fdbe71
parent 13327bbe5535da30a203cd8b00d4037085e6d557

Give explicit template instantiations weak ODR linkage. Former
iterations of this patch gave explicit template instantiation
link-once ODR linkage, which permitted the back end to eliminate
unused symbols. Weak ODR linkage still requires the symbols to be
generated.

llvm-svn: 98441

clang/test/CodeGenCXX/mangle.cpp

diff --git a/clang/test/CodeGenCXX/mangle.cpp b/clang/test/CodeGenCXX/mangle.cpp
index 3f96690..8dee41b 100644
--- a/clang/test/CodeGenCXX/mangle.cpp
+++ b/clang/test/CodeGenCXX/mangle.cpp
@@ -250,26 +250,26 @@
 namespace Expressions {
 // Unary operators.
 
-// CHECK: define void @_ZN11Expressions2f1ILi1EEEvPAplngT_Li2E_i
+// CHECK: define weak_odr void @_ZN11Expressions2f1ILi1EEEvPAplngT_Li2E_i
 template <int i> void f1(int (*)[(-i) + 2]) { };
 template void f1<1>(int (*)[1]);
 
-// CHECK: define void @_ZN11Expressions2f2ILi1EEEvPApsT__i
+// CHECK: define weak_odr void @_ZN11Expressions2f2ILi1EEEvPApsT__i
 template <int i> void f2(int (*)[+i]) { };
 template void f2<1>(int (*)[1]);
 
 // Binary operators.
 
-// CHECK: define void @_ZN11Expressions2f3ILi1EEEvPAplT_T__i
+// CHECK: define weak_odr void @_ZN11Expressions2f3ILi1EEEvPAplT_T__i
 template <int i> void f3(int (*)[i+i]) { };
 template void f3<1>(int (*)[2]);
 
-// CHECK: define void @_ZN11Expressions2f4ILi1EEEvPAplplLi2ET_T__i
+// CHECK: define weak_odr void @_ZN11Expressions2f4ILi1EEEvPAplplLi2ET_T__i
 template <int i> void f4(int (*)[2 + i+i]) { };
 template void f4<1>(int (*)[4]);
 
 // The ternary operator.
-// CHECK: define void @_ZN11Expressions2f4ILb1EEEvPAquT_Li1ELi2E_i
+// CHECK: define weak_odr void @_ZN11Expressions2f4ILb1EEEvPAquT_Li1ELi2E_i
 template <bool b> void f4(int (*)[b ? 1 : 2]) { };
 template void f4<true>(int (*)[1]);
 }
@@ -305,7 +305,7 @@
   T *allocate(int, const void*) { return 0; }
 };
 
-// CHECK: define i8* @_ZN6PR58615AllocIcNS_6PolicyINS_1PELb1EEEE8allocateEiPKv
+// CHECK: define weak_odr i8* @_ZN6PR58615AllocIcNS_6PolicyINS_1PELb1EEEE8allocateEiPKv
 template class Alloc<char>;
 }
 
@@ -369,7 +369,7 @@
 namespace test1 {
   template<typename T> struct X { };
   template<template<class> class Y, typename T> void f(Y<T>) { }
-  // CHECK: define void @_ZN5test11fINS_1XEiEEvT_IT0_E
+  // CHECK: define weak_odr void @_ZN5test11fINS_1XEiEEvT_IT0_E
   template void f(X<int>);
 }
 
@@ -399,10 +399,10 @@
   //template <class T> decltype(((T*) 0)->Path1::ab) get_ab_1(T &ref) { return ref.Path1::ab; }
   //template <class T> decltype(((T*) 0)->Path2::ab) get_ab_2(T &ref) { return ref.Path2::ab; }
 
-  // define linkonce_odr float @_ZN5test37get_p_1INS_7DerivedEEEDtptcvPT_Li0E5Path11pERS2_(
+  // define weak_odr float @_ZN5test37get_p_1INS_7DerivedEEEDtptcvPT_Li0E5Path11pERS2_(
   template <class T> decltype(((T*) 0)->Path1::p) get_p_1(T &ref) { return ref.Path1::p; }
 
-  // define linkonce_odr double @_ZN5test37get_p_1INS_7DerivedEEEDtptcvPT_Li0E5Path21pERS2_(
+  // define weak_odr double @_ZN5test37get_p_1INS_7DerivedEEEDtptcvPT_Li0E5Path21pERS2_(
   template <class T> decltype(((T*) 0)->Path2::p) get_p_2(T &ref) { return ref.Path2::p; }
 
   Derived obj;
@@ -447,7 +447,7 @@
   void g(zed<&foo::bar>*)
   {}
 }
-// CHECK: define void @_ZN5test81AILZNS_1B5valueEEE3incEv
+// CHECK: define weak_odr void @_ZN5test81AILZNS_1B5valueEEE3incEv
 namespace test8 {
   template <int &counter> class A { void inc() { counter++; } };
   class B { static int value; };