[llvm] r257903 - Add a test showing when ld64 can hide linkonce_odr symbols.

[Rafael Espindola via llvm-commits]

Author: rafael
Date: Fri Jan 15 10:40:20 2016
New Revision: 257903

URL: http://llvm.org/viewvc/llvm-project?rev=257903&view=rev
Log:
Add a test showing when ld64 can hide linkonce_odr symbols.

Added:
    llvm/trunk/test/tools/lto/hide-linkonce-odr.ll

Added: llvm/trunk/test/tools/lto/hide-linkonce-odr.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/lto/hide-linkonce-odr.ll?rev=257903&view=auto
==============================================================================
--- llvm/trunk/test/tools/lto/hide-linkonce-odr.ll (added)
+++ llvm/trunk/test/tools/lto/hide-linkonce-odr.ll Fri Jan 15 10:40:20 2016
@@ -0,0 +1,30 @@
+; RUN: llvm-as %s -o %t.o
+; RUN: %ld64 -lto_library %llvmshlibdir/libLTO.dylib -dylib -arch x86_64 -macosx_version_min 10.10.0 -lSystem -o %t.dylib %t.o -save-temps  -undefined dynamic_lookup
+
+; RUN: llvm-dis %t.dylib.lto.opt.bc -o - | FileCheck --check-prefix=IR %s
+; check that @a is still a linkonce_odr definition
+; IR: define linkonce_odr void @a()
+
+; RUN: llvm-nm %t.dylib | FileCheck --check-prefix=NM %s
+; check that the linker can hide @a but not @b
+; NM: 0000000000000f10 t _a
+; NM: 0000000000000f20 T _b
+; NM: 0000000000000f00 T _c
+
+target triple = "x86_64-apple-macosx10.10.0"
+
+declare void @external()
+
+define linkonce_odr void @a() noinline {
+  call void @external()
+  ret void
+}
+
+define linkonce_odr void @b() {
+  ret void
+}
+
+define void()* @c() {
+  call void @a()
+  ret void()* @b
+}