aboutsummaryrefslogtreecommitdiff
path: root/test/ELF/lto/defsym.ll
blob: e5f0a4875f59b9e4fe99dbfc40e5233a237e8c9b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
; REQUIRES: x86
; LTO
; RUN: llvm-as %s -o %t.o
; RUN: llvm-as %S/Inputs/defsym-bar.ll -o %t1.o
; RUN: ld.lld %t.o %t1.o -shared -o %t.so -defsym=bar2=bar3 -save-temps
; RUN: llvm-readelf -t %t.so.lto.o | FileCheck --check-prefix=OBJ %s
; RUN: llvm-objdump -d %t.so | FileCheck %s

; ThinLTO
; RUN: opt -module-summary %s -o %t.o
; RUN: opt -module-summary %S/Inputs/defsym-bar.ll -o %t1.o
; RUN: ld.lld %t.o %t1.o -shared -o %t2.so -defsym=bar2=bar3 -save-temps
; RUN: llvm-readelf -t %t2.so1.lto.o | FileCheck --check-prefix=OBJ %s
; RUN: llvm-objdump -d %t2.so | FileCheck %s --check-prefix=THIN

; OBJ:  UND bar2

; Call to bar2() should not be inlined and should be routed to bar3()
; Symbol bar3 should not be eliminated

; CHECK:      foo:
; CHECK-NEXT: pushq	%rax
; CHECK-NEXT: callq
; CHECK-NEXT: callq{{.*}}<bar3>
; CHECK-NEXT: callq

; THIN:       foo
; THIN-NEXT:  pushq %rax
; THIN-NEXT:  callq
; THIN-NEXT:  callq{{.*}}<bar3>
; THIN-NEXT:  popq %rax
; THIN-NEXT:  jmp

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

declare void @bar1()
declare void @bar2()
declare void @bar3()

define void @foo() {
  call void @bar1()
  call void @bar2()
  call void @bar3()
  ret void
}