Index: lib/Linker/IRMover.cpp
===================================================================
--- lib/Linker/IRMover.cpp
+++ lib/Linker/IRMover.cpp
@@ -1087,7 +1087,7 @@
       return nullptr;
 
     NewGV = copyGlobalValueProto(SGV, ShouldLink);
-    if (!ForAlias)
+    if (ShouldLink || !ForAlias)
       forceRenaming(NewGV, SGV->getName());
   }
   if (ShouldLink || ForAlias) {
Index: test/Linker/Inputs/alias-2.ll
===================================================================
--- /dev/null
+++ test/Linker/Inputs/alias-2.ll
@@ -0,0 +1,7 @@
+define void @B() {
+  call void @A()
+  ret void
+}
+
+declare void @A()
+
Index: test/Linker/alias-2.ll
===================================================================
--- /dev/null
+++ test/Linker/alias-2.ll
@@ -0,0 +1,24 @@
+; RUN: llvm-link %s %S/Inputs/alias-2.ll -S -o - | FileCheck %s
+; RUN: llvm-link %S/Inputs/alias-2.ll %s -S -o - | FileCheck %s
+
+; Test the fix for PR26152, where A from the second module is
+; erroneously renamed to A.1 and not linked to the declaration from
+; the first module
+
+@C = alias void (), void ()* @A
+
+define void @D() {
+  call void @C()
+  ret void
+}
+
+define void @A() {
+  ret void
+}
+
+; CHECK-DAG: @C = alias void (), void ()* @A
+; CHECK-DAG: define void @B()
+; CHECK-DAG:   call void @A()
+; CHECK-DAG: define void @D()
+; CHECK-DAG:   call void @C()
+; CHECK-DAG: define void @A()