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 -o %t.dylib %t.o -save-temps -undefined dynamic_lookup -exported_symbol _c -exported_symbol _b -exported_symbol _GlobLinkonce -lSystem 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 ptr] [ptr @GlobLinkonce, ptr @b], 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: S _GlobLinkonce 13; NM: t _a 14; NM: T _b 15; NM: T _c 16 17 18target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 19target triple = "x86_64-apple-macosx10.10.0" 20 21declare void @external() 22 23@GlobLinkonce = linkonce_odr unnamed_addr constant [1 x ptr] [ptr null], align 8 24 25define linkonce_odr void @a() noinline { 26 %use_of_GlobLinkonce = load [1 x ptr], ptr@GlobLinkonce 27 call void @external() 28 ret void 29} 30 31define linkonce_odr void @b() { 32 ret void 33} 34 35define ptr @c() { 36 call void @a() 37 ret ptr @b 38} 39