1 ; RUN: llvm-as %s -o %t.o 2 ; 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 -exported_symbol _c -exported_symbol _b -exported_symbol _GlobLinkonce 3 4 ; RUN: llvm-dis %t.dylib.lto.opt.bc -o - | FileCheck --check-prefix=IR %s 5 ; check that @a is no longer a linkonce_odr definition 6 ; IR-NOT: define linkonce_odr void @a() 7 ; check that @b is appended in llvm.used 8 ; IR: @llvm.compiler.used = appending global [2 x i8*] [i8* bitcast ([1 x i8*]* @GlobLinkonce to i8*), i8* bitcast (void ()* @b to i8*)], section "llvm.metadata" 9 10 ; RUN: llvm-nm %t.dylib | FileCheck --check-prefix=NM %s 11 ; check that the linker can hide @a but not @b, nor @GlobLinkonce 12 ; NM: 0000000000000f48 S _GlobLinkonce 13 ; NM: 0000000000000f10 t _a 14 ; NM: 0000000000000f20 T _b 15 ; NM: 0000000000000f00 T _c 16 17 18 target triple = "x86_64-apple-macosx10.10.0" 19 20 declare void @external() 21 22 @GlobLinkonce = linkonce_odr unnamed_addr constant [1 x i8*] [i8* null], align 8 23 24 define linkonce_odr void @a() noinline { 25 %use_of_GlobLinkonce = load [1 x i8*], [1 x i8*] *@GlobLinkonce 26 call void @external() 27 ret void 28 } 29 30 define linkonce_odr void @b() { 31 ret void 32 } 33 34 define void()* @c() { 35 call void @a() 36 ret void()* @b 37 } 38
