1; RUN: opt -module-summary %s -o %t.o 2; RUN: opt -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: -shared \ 15; RUN: -o %t3.o %t2.o %t.o 16; RUN: llvm-nm %t3.o | FileCheck %s 17; RUN: llvm-dis %t.o.opt.bc -o - | FileCheck --check-prefix=OPT %s 18; RUN: llvm-dis %t2.o.opt.bc -o - | FileCheck --check-prefix=OPT2 %s 19 20; Ensure that f() is defined in resulting object file, and also 21; confirm the weak linkage directly in the saved opt bitcode files. 22; CHECK-NOT: U f 23; OPT: declare hidden void @f() 24; OPT2: define weak_odr hidden void @f() 25 26target triple = "x86_64-unknown-linux-gnu" 27define i32 @g() { 28 call void @f() 29 ret i32 0 30} 31define linkonce_odr hidden void @f() { 32 ret void 33} 34