| ; Test to ensure that ThinLTO sorts the modules before passing to the |
| ; final native link based on the linker's determination of which |
| ; object within a static library contains the prevailing def of a symbol. |
| |
| ; First generate bitcode with a module summary index for each file |
| ; RUN: opt -module-summary %s -o %t.o |
| ; RUN: opt -module-summary %p/Inputs/thinlto_weak_library1.ll -o %t2.o |
| ; RUN: opt -module-summary %p/Inputs/thinlto_weak_library2.ll -o %t3.o |
| |
| ; Although the objects are ordered "%t2.o %t3.o" in the library, the |
| ; linker selects %t3.o first since it satisfies a strong reference from |
| ; %t.o. It later selects %t2.o based on the strong ref from %t3.o. |
| ; Therefore, %t3.o's copy of @f is prevailing, and we need to link |
| ; %t3.o before %t2.o in the final native link. |
| ; RUN: %gold -plugin %llvmshlibdir/LLVMgold%shlibext \ |
| ; RUN: --plugin-opt=thinlto \ |
| ; RUN: --plugin-opt=save-temps \ |
| ; RUN: -m elf_x86_64 \ |
| ; RUN: -o %t4 \ |
| ; RUN: %t.o \ |
| ; RUN: --start-lib %t2.o %t3.o --end-lib |
| |
| ; Make sure we completely dropped the definition of the non-prevailing |
| ; copy of f() (and didn't simply convert to available_externally, which |
| ; would incorrectly enable inlining). |
| ; RUN: llvm-dis %t2.o.1.promote.bc -o - | FileCheck %s |
| ; CHECK: declare dso_local i32 @f() |
| |
| ; ModuleID = 'thinlto_weak_library.c' |
| source_filename = "thinlto_weak_library.c" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Function Attrs: nounwind uwtable |
| define i32 @main() local_unnamed_addr { |
| entry: |
| tail call void (...) @test2() |
| ret i32 0 |
| } |
| |
| declare void @test2(...) local_unnamed_addr |