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Add a test showing when ld64 can hide linkonce_odr symbols. 

llvm-svn: 257903
This commit is contained in:
Rafael Espindola 2016-01-15 16:40:20 +00:00
parent ac03dca412
commit c5fba6b512
1 changed files with 30 additions and 0 deletions
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llvm/test/tools/lto/hide-linkonce-odr.ll Normal file
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; 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
}