; REQUIRES: x86

; RUN: opt -module-summary %s -o %t1.o
; RUN: opt -module-summary %p/Inputs/thinlto.ll -o %t2.o

; Test to ensure that thinlto-index-only with obj-path creates the file.
; RUN: rm -f %t4.o
; RUN: ld.lld --plugin-opt=thinlto-index-only --plugin-opt=obj-path=%t4.o -shared %t1.o %t2.o -o /dev/null
; RUN: llvm-readobj -h %t4.o | FileCheck %s
; RUN: llvm-nm %t4.o 2>&1 | count 0

; Check that this also works without the --plugin-opt= prefix.
; RUN: rm -f %t4.o
; RUN: ld.lld --thinlto-index-only --lto-obj-path=%t4.o -shared %t1.o %t2.o -o /dev/null
; RUN: llvm-readobj -h %t4.o | FileCheck %s

;; Ensure lld emits empty combined module if specific obj-path.
; RUN: rm -fr %t.dir/objpath && mkdir -p %t.dir/objpath
; RUN: ld.lld --plugin-opt=obj-path=%t4.o -shared %t1.o %t2.o -o %t.dir/objpath/a.out --save-temps
; RUN: ls %t.dir/objpath/a.out*.lto.* | count 3

;; Ensure lld does not emit empty combined module in default.
; RUN: rm -fr %t.dir/objpath && mkdir -p %t.dir/objpath
; RUN: ld.lld %t1.o %t2.o -o %t.dir/objpath/a.out --save-temps
; RUN: ls %t.dir/objpath/a.out*.lto.* | count 2

; CHECK: Format: elf64-x86-64

target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

declare void @g(...)

define void @f() {
entry:
  call void (...) @g()
  ret void
}