1; REQUIRES: x86-registered-target
2
3; RUN: opt -module-summary -o %t1.o %s
4; RUN: opt -module-summary -o %t2.o %S/Inputs/thinlto_backend.ll
5; RUN: llvm-lto -thinlto -o %t %t1.o %t2.o
6
7; Ensure clang -cc1 give expected error for incorrect input type
8; RUN: not %clang_cc1 -O2 -o %t1.o -x c %s -c -fthinlto-index=%t.thinlto.bc 2>&1 | FileCheck %s -check-prefix=CHECK-WARNING
9; CHECK-WARNING: error: invalid argument '-fthinlto-index={{.*}}' only allowed with '-x ir'
10
11; Ensure we get expected error for missing index file
12; RUN: %clang -O2 -o %t4.o -x ir %t1.o -c -fthinlto-index=bad.thinlto.bc 2>&1 | FileCheck %s -check-prefix=CHECK-ERROR1
13; CHECK-ERROR1: Error loading index file 'bad.thinlto.bc'
14
15; Ensure we ignore empty index file, and run non-ThinLTO compilation which
16; would not import f2
17; RUN: touch %t4.thinlto.bc
18; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t4.o -x ir %t1.o -c -fthinlto-index=%t4.thinlto.bc
19; RUN: llvm-nm %t4.o | FileCheck --check-prefix=CHECK-OBJ-IGNORE-EMPTY %s
20; CHECK-OBJ-IGNORE-EMPTY: T f1
21; CHECK-OBJ-IGNORE-EMPTY: U f2
22
23; Ensure we don't fail with index and non-ThinLTO object file, and output must
24; be empty file.
25; RUN: opt -o %t5.o %s
26; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t4.o -x ir %t5.o -c -fthinlto-index=%t.thinlto.bc
27; RUN: llvm-nm %t4.o | count 0
28
29; Ensure f2 was imported. Check for all 3 flavors of -save-temps[=cwd|obj].
30; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc -save-temps=obj
31; RUN: llvm-dis %t1.s.0.3.import.bc -o - | FileCheck --check-prefix=CHECK-IMPORT %s
32; RUN: mkdir -p %T/dir1
33; RUN: (cd %T/dir1 && %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc -save-temps=cwd)
34; RUN: llvm-dis %T/dir1/*1.s.0.3.import.bc -o - | FileCheck --check-prefix=CHECK-IMPORT %s
35; RUN: mkdir -p %T/dir2
36; RUN: (cd %T/dir2 && %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc -save-temps)
37; RUN: llvm-dis %T/dir2/*1.s.0.3.import.bc -o - | FileCheck --check-prefix=CHECK-IMPORT %s
38; CHECK-IMPORT: define available_externally void @f2()
39; RUN: llvm-nm %t3.o | FileCheck --check-prefix=CHECK-OBJ %s
40; CHECK-OBJ: T f1
41; CHECK-OBJ-NOT: U f2
42
43; Ensure we get expected error for input files without summaries
44; RUN: opt -o %t2.o %s
45; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc 2>&1 | FileCheck %s -check-prefix=CHECK-ERROR2
46; CHECK-ERROR2: Error loading imported file '{{.*}}': Could not find module summary
47
48target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
49target triple = "x86_64-unknown-linux-gnu"
50
51declare void @f2()
52declare i8* @f3()
53
54define void @f1() {
55  call void @f2()
56  ; Make sure that the backend can handle undefined references.
57  ; Do an indirect call so that the undefined ref shows up in the combined index.
58  call void bitcast (i8*()* @f3 to void()*)()
59  ret void
60}
61