1; LTO
2; This doesn't currently work with gold, because it does not apply defsym
3; renaming to symbols in the same module (apparently by design for consistency
4; with GNU ld). Because regular LTO hands back a single object file to gold,
5; it doesn't perform the desired defsym renaming. This isn't an issue with
6; ThinLTO which hands back multiple native objects to gold. For regular
7; LTO defsym handling, gold will need a fix (not the gold plugin).
8; RUN-TODO: llvm-as %s -o %t.o
9; RUN-TODO: llvm-as %S/Inputs/wrap-bar.ll -o %t1.o
10; RUN-TODO: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext %t.o %t1.o -shared -o %t.so -wrap=bar
11; RUN-TODO: llvm-objdump -d %t.so | FileCheck %s
12; RUN-TODO: llvm-readobj --symbols %t.so | FileCheck -check-prefix=BIND %s
13
14; ThinLTO
15; RUN: opt -module-summary %s -o %t.o
16; RUN: opt -module-summary %S/Inputs/wrap-bar.ll -o %t1.o
17; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext %t.o %t1.o -shared -o %t.so -wrap=bar
18; RUN: llvm-objdump -d %t.so | FileCheck %s --check-prefix=THIN
19; RUN: llvm-readobj --symbols %t.so | FileCheck -check-prefix=BIND %s
20
21; Make sure that calls in foo() are not eliminated and that bar is
22; routed to __wrap_bar and __real_bar is routed to bar.
23
24; CHECK:      <foo>:
25; CHECK-NEXT: pushq	%rax
26; CHECK-NEXT: callq{{.*}}<__wrap_bar>
27; CHECK-NEXT: callq{{.*}}<bar>
28
29; THIN:      <foo>:
30; THIN-NEXT: pushq	%rax
31; THIN-NEXT: callq{{.*}}<__wrap_bar>
32; THIN-NEXT: popq  %rax
33; THIN-NEXT: jmp{{.*}}<bar>
34
35; Check that bar and __wrap_bar retain their original binding.
36; BIND:      Name: bar
37; BIND-NEXT: Value:
38; BIND-NEXT: Size:
39; BIND-NEXT: Binding: Local
40; BIND:      Name: __wrap_bar
41; BIND-NEXT: Value:
42; BIND-NEXT: Size:
43; BIND-NEXT: Binding: Local
44
45target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
46target triple = "x86_64-unknown-linux-gnu"
47
48declare void @bar()
49declare void @__real_bar()
50
51define void @foo() {
52  call void @bar()
53  call void @__real_bar()
54  ret void
55}
56