1; REQUIRES: x86
2; RUN: rm -rf %t && mkdir %t && cd %t
3
4;; First ensure that the ThinLTO handling in lld handles
5;; bitcode without summary sections gracefully and generates index file.
6; RUN: llvm-as %s -o 1.o
7; RUN: llvm-as %p/Inputs/thinlto.ll -o 2.o
8; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o 2.o -o 3
9; RUN: ls 2.o.thinlto.bc
10; RUN: not test -e 3
11; RUN: ld.lld -shared 1.o 2.o -o 3
12; RUN: llvm-nm 3 | FileCheck %s --check-prefix=NM
13
14;; Basic ThinLTO tests.
15; RUN: opt -module-summary %s -o 1.o
16; RUN: opt -module-summary %p/Inputs/thinlto.ll -o 2.o
17; RUN: opt -module-summary %p/Inputs/thinlto_empty.ll -o 3.o
18
19;; Ensure lld generates an index and not a binary if requested.
20; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o 2.o -o 4
21; RUN: llvm-bcanalyzer -dump 1.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
22; RUN: llvm-bcanalyzer -dump 2.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
23; RUN: not test -e 4
24
25;; Ensure lld generates an index even if the file is wrapped in --start-lib/--end-lib
26; RUN: rm -f 2.o.thinlto.bc 4
27; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o 3.o --start-lib 2.o --end-lib -o 4
28; RUN: llvm-dis < 2.o.thinlto.bc | grep -q '\^0 = module:'
29; RUN: not test -e 4
30
31;; Test that LLD generates an empty index even for lazy object file that is not added to link.
32;; Test LLD generates empty imports file either because of thinlto-emit-imports-files option.
33; RUN: rm -f 1.o.thinlto.bc 1.o.imports
34; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 2.o --start-lib 1.o --end-lib \
35; RUN: --plugin-opt=thinlto-emit-imports-files -o 3
36; RUN: ls 1.o.thinlto.bc
37; RUN: ls 1.o.imports
38
39;; Ensure LLD generates an empty index for each bitcode file even if all bitcode files are lazy.
40; RUN: rm -f 1.o.thinlto.bc
41; RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux-gnu /dev/null -o dummy.o
42; RUN: ld.lld --plugin-opt=thinlto-index-only -shared dummy.o --start-lib 1.o --end-lib -o /dev/null
43; RUN: ls 1.o.thinlto.bc
44
45; NM: T f
46
47;; The backend index for this module contains summaries from itself and
48;; Inputs/thinlto.ll, as it imports from the latter.
49; BACKEND1: <MODULE_STRTAB_BLOCK
50; BACKEND1-NEXT: <ENTRY {{.*}} record string = '1.o'
51; BACKEND1-NEXT: <ENTRY {{.*}} record string = '2.o'
52; BACKEND1-NEXT: </MODULE_STRTAB_BLOCK
53; BACKEND1: <GLOBALVAL_SUMMARY_BLOCK
54; BACKEND1: <VERSION
55; BACKEND1: <FLAGS
56; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
57; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
58; BACKEND1: <COMBINED
59; BACKEND1: <COMBINED
60; BACKEND1: </GLOBALVAL_SUMMARY_BLOCK
61
62;; The backend index for Input/thinlto.ll contains summaries from itself only,
63;; as it does not import anything.
64; BACKEND2: <MODULE_STRTAB_BLOCK
65; BACKEND2-NEXT: <ENTRY {{.*}} record string = '2.o'
66; BACKEND2-NEXT: </MODULE_STRTAB_BLOCK
67; BACKEND2-NEXT: <GLOBALVAL_SUMMARY_BLOCK
68; BACKEND2-NEXT: <VERSION
69; BACKEND2-NEXT: <FLAGS
70; BACKEND2-NEXT: <VALUE_GUID op0=1 op1=-5300342847281564238
71; BACKEND2-NEXT: <COMBINED
72; BACKEND2-NEXT: <BLOCK_COUNT op0=2/>
73; BACKEND2-NEXT: </GLOBALVAL_SUMMARY_BLOCK
74
75target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
76target triple = "x86_64-unknown-linux-gnu"
77
78declare void @g(...)
79
80define void @f() {
81entry:
82  call void (...) @g()
83  ret void
84}
85