1; RUN: llvm-as -module-summary %s -o %t.o
2; RUN: llvm-as -module-summary %p/Inputs/thinlto_linkonceresolution.ll -o %t2.o
3
4; Ensure the plugin ensures that for ThinLTO the prevailing copy of a
5; linkonce symbol is changed to weak to ensure it is not eliminated.
6; Note that gold picks the first copy of f() as the prevailing one,
7; so listing %t2.o first is sufficient to ensure that this copy is
8; preempted. Also, set the import-instr-limit to 0 to prevent f() from
9; being imported from %t2.o which hides the problem.
10; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold.so \
11; RUN:     --plugin-opt=thinlto \
12; RUN:     --plugin-opt=-import-instr-limit=0 \
13; RUN:     --plugin-opt=save-temps \
14; RUN:     -o %t3.o %t2.o %t.o
15; RUN: llvm-nm %t3.o | FileCheck %s
16; RUN: llvm-dis %t.o.opt.bc -o - | FileCheck --check-prefix=OPT %s
17; RUN: llvm-dis %t2.o.opt.bc -o - | FileCheck --check-prefix=OPT2 %s
18
19; Ensure that f() is defined in resulting object file, and also
20; confirm the weak linkage directly in the saved opt bitcode files.
21; CHECK-NOT: U f
22; OPT: declare extern_weak hidden void @f()
23; OPT2: define weak_odr hidden void @f()
24
25target triple = "x86_64-unknown-linux-gnu"
26define i32 @g() {
27  call void @f()
28  ret i32 0
29}
30define linkonce_odr hidden void @f() {
31  ret void
32}
33