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      1 ; RUN: opt -module-summary %s -o %t.o
      2 ; RUN: opt -module-summary %p/Inputs/thinlto_weak_resolution.ll -o %t2.o
      3 
      4 ; Verify that prevailing weak for linker symbol is kept.
      5 ; Note that gold picks the first copy of a function as the prevailing one,
      6 ; so listing %t.o first is sufficient to ensure that its copies are prevailing.
      7 ; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold.so \
      8 ; RUN:     --plugin-opt=thinlto \
      9 ; RUN:     --plugin-opt=save-temps \
     10 ; RUN:     -shared \
     11 ; RUN:     -o %t3.o %t.o %t2.o
     12 
     13 ; RUN: llvm-nm %t3.o | FileCheck %s
     14 ; CHECK: weakfunc
     15 
     16 ; All of the preempted functions should have been eliminated (the plugin will
     17 ; not link them in).
     18 ; RUN: llvm-dis %t2.o.opt.bc -o - | FileCheck --check-prefix=OPT2 %s
     19 ; OPT2-NOT: @
     20 
     21 ; RUN: llvm-dis %t.o.opt.bc -o - | FileCheck --check-prefix=OPT %s
     22 
     23 target triple = "x86_64-unknown-linux-gnu"
     24 
     25 
     26 define i32 @main() #0 {
     27 entry:
     28   call void @linkonceodralias()
     29   call void @linkoncealias()
     30   call void @linkonceodrfuncwithalias()
     31   call void @linkoncefuncwithalias()
     32   call void @linkonceodrfunc()
     33   call void @linkoncefunc()
     34   call void @weakodrfunc()
     35   call void @weakfunc()
     36   call void @linkonceodrfuncInSingleModule()
     37   ret i32 0
     38 }
     39 
     40 ; Alias are resolved
     41 ; OPT: @linkonceodralias = weak_odr alias void (), void ()* @linkonceodrfuncwithalias
     42 @linkonceodralias = linkonce_odr alias void (), void ()* @linkonceodrfuncwithalias
     43 
     44 ; Alias are resolved
     45 ; OPT: @linkoncealias = weak alias void (), void ()* @linkoncefuncwithalias
     46 @linkoncealias = linkonce alias void (), void ()* @linkoncefuncwithalias
     47 
     48 ; Function with an alias are not optimized
     49 ; OPT: define linkonce_odr void @linkonceodrfuncwithalias()
     50 define linkonce_odr void @linkonceodrfuncwithalias() #0 {
     51 entry:
     52   ret void
     53 }
     54 
     55 ; Function with an alias are not optimized
     56 ; OPT: define linkonce void @linkoncefuncwithalias()
     57 define linkonce void @linkoncefuncwithalias() #0 {
     58 entry:
     59   ret void
     60 }
     61 
     62 ; OPT: define weak_odr void @linkonceodrfunc()
     63 define linkonce_odr void @linkonceodrfunc() #0 {
     64 entry:
     65   ret void
     66 }
     67 ; OPT: define weak void @linkoncefunc()
     68 define linkonce void @linkoncefunc() #0 {
     69 entry:
     70   ret void
     71 }
     72 ; OPT: define weak_odr void @weakodrfunc()
     73 define weak_odr void @weakodrfunc() #0 {
     74 entry:
     75   ret void
     76 }
     77 ; OPT: define weak void @weakfunc()
     78 define weak void @weakfunc() #0 {
     79 entry:
     80   ret void
     81 }
     82 
     83 ; OPT: weak_odr void @linkonceodrfuncInSingleModule()
     84 define linkonce_odr void @linkonceodrfuncInSingleModule() #0 {
     85 entry:
     86   ret void
     87 }
     88