1; Test to ensure that ThinLTO sorts the modules before passing to the 2; final native link based on the linker's determination of which 3; object within a static library contains the prevailing def of a symbol. 4 5; First generate bitcode with a module summary index for each file 6; RUN: opt -module-summary %s -o %t.o 7; RUN: opt -module-summary %p/Inputs/thinlto_weak_library1.ll -o %t2.o 8; RUN: opt -module-summary %p/Inputs/thinlto_weak_library2.ll -o %t3.o 9 10; Although the objects are ordered "%t2.o %t3.o" in the library, the 11; linker selects %t3.o first since it satisfies a strong reference from 12; %t.o. It later selects %t2.o based on the strong ref from %t3.o. 13; Therefore, %t3.o's copy of @f is prevailing, and we need to link 14; %t3.o before %t2.o in the final native link. 15; RUN: %gold -plugin %llvmshlibdir/LLVMgold%shlibext \ 16; RUN: --plugin-opt=thinlto \ 17; RUN: --plugin-opt=save-temps \ 18; RUN: -m elf_x86_64 \ 19; RUN: -o %t4 \ 20; RUN: %t.o \ 21; RUN: --start-lib %t2.o %t3.o --end-lib 22 23; Make sure we completely dropped the definition of the non-prevailing 24; copy of f() (and didn't simply convert to available_externally, which 25; would incorrectly enable inlining). 26; RUN: llvm-dis %t2.o.1.promote.bc -o - | FileCheck %s 27; CHECK: declare i32 @f() 28 29; ModuleID = 'thinlto_weak_library.c' 30source_filename = "thinlto_weak_library.c" 31target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 32target triple = "x86_64-unknown-linux-gnu" 33 34; Function Attrs: nounwind uwtable 35define i32 @main() local_unnamed_addr { 36entry: 37 tail call void (...) @test2() 38 ret i32 0 39} 40 41declare void @test2(...) local_unnamed_addr 42