1; REQUIRES: x86 2 3; First ensure that the ThinLTO handling in lld handles 4; bitcode without summary sections gracefully and generates index file. 5; RUN: llvm-as %s -o %t.o 6; RUN: llvm-as %p/Inputs/thinlto.ll -o %t2.o 7; RUN: ld.lld -m elf_x86_64 --plugin-opt=thinlto-index-only -shared %t.o %t2.o -o %t3 8; RUN: ls %t2.o.thinlto.bc 9; RUN: not test -e %t3 10; RUN: ld.lld -m elf_x86_64 -shared %t.o %t2.o -o %t4 11; RUN: llvm-nm %t4 | FileCheck %s --check-prefix=NM 12 13; Basic ThinLTO tests. 14; RUN: opt -module-summary %s -o %t.o 15; RUN: opt -module-summary %p/Inputs/thinlto.ll -o %t2.o 16; RUN: opt -module-summary %p/Inputs/thinlto_empty.ll -o %t4.o 17 18; Ensure lld generates an index and not a binary if requested. 19; RUN: ld.lld -m elf_x86_64 --plugin-opt=thinlto-index-only -shared %t.o %t2.o -o %t3 20; RUN: llvm-bcanalyzer -dump %t.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND1 21; RUN: llvm-bcanalyzer -dump %t2.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND2 22; RUN: not test -e %t3 23 24; Ensure lld generates an index even if the file is wrapped in --start-lib/--end-lib 25; RUN: rm -f %t2.o.thinlto.bc 26; RUN: ld.lld -m elf_x86_64 --plugin-opt=thinlto-index-only -shared %t.o %t4.o --start-lib %t2.o --end-lib -o %t5 27; RUN: ls %t2.o.thinlto.bc 28 29; Ensure lld writes linked files to linked objects file 30; RUN: ld.lld -m elf_x86_64 --plugin-opt=thinlto-index-only=%tlinkedobjfile -shared %t.o %t2.o %t4.o -o %t5 31; RUN: cat %tlinkedobjfile 2>&1 | FileCheck %s --check-prefix=IN1 32; IN1: {{.*}}thinlto.ll.tmp.o 33; IN1-NEXT: {{.*}}thinlto.ll.tmp2.o 34; IN1-NEXT: {{.*}}thinlto.ll.tmp4.o 35 36; Ensure lld generates error if unable to write to index file 37; RUN: rm -f %t4.o.thinlto.bc 38; RUN: touch %t4.o.thinlto.bc 39; RUN: chmod 400 %t4.o.thinlto.bc 40; RUN: not ld.lld -m elf_x86_64 --plugin-opt=thinlto-index-only -shared %t.o %t4.o -o %t5 2>&1 | FileCheck %s --check-prefix=ERR 41; ERR: cannot open {{.*}}4.o.thinlto.bc: {{P|p}}ermission denied 42 43; Ensure lld doesn't generates index files when thinlto-index-only is not enabled 44; RUN: rm -f %t.o.thinlto.bc 45; RUN: rm -f %t2.o.thinlto.bc 46; RUN: rm -f %t4.o.thinlto.bc 47; RUN: ld.lld -m elf_x86_64 -shared %t.o %t2.o %t4.o -o %t5 48; RUN: not ls %t.o.thinlto.bc 49; RUN: not ls %t2.o.thinlto.bc 50; RUN: not ls %t4.o.thinlto.bc 51 52; First force single-threaded mode 53; RUN: rm -f %t.lto.o %t1.lto.o 54; RUN: ld.lld -save-temps --thinlto-jobs=1 -shared %t.o %t2.o -o %t 55; RUN: llvm-nm %t1.lto.o | FileCheck %s --check-prefix=NM1 56; RUN: llvm-nm %t2.lto.o | FileCheck %s --check-prefix=NM2 57 58; Next force multi-threaded mode 59; RUN: rm -f %t2.lto.o %t21.lto.o 60; RUN: ld.lld -save-temps --thinlto-jobs=2 -shared %t.o %t2.o -o %t2 61; RUN: llvm-nm %t21.lto.o | FileCheck %s --check-prefix=NM1 62; RUN: llvm-nm %t22.lto.o | FileCheck %s --check-prefix=NM2 63 64; Then check without --thinlto-jobs (which currently default to hardware_concurrency) 65; We just check that we don't crash or fail (as it's not sure which tests are 66; stable on the final output file itself. 67; RUN: ld.lld -shared %t.o %t2.o -o %t2 68 69; Test to ensure that thinlto-index-only with obj-path creates the file. 70; RUN: rm -f %t5.o 71; RUN: ld.lld --plugin-opt=thinlto-index-only --plugin-opt=obj-path=%t5.o -shared %t.o %t2.o -o %t4 72; RUN: llvm-readobj -h %t5.o | FileCheck %s --check-prefix=FORMAT 73; RUN: llvm-nm %t5.o | count 0 74 75; NM: T f 76; NM1: T f 77; NM1-NOT: U g 78; NM2: T g 79; FORMAT: Format: ELF64-x86-64 80 81; The backend index for this module contains summaries from itself and 82; Inputs/thinlto.ll, as it imports from the latter. 83; BACKEND1: <MODULE_STRTAB_BLOCK 84; BACKEND1-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o' 85; BACKEND1-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o' 86; BACKEND1-NEXT: </MODULE_STRTAB_BLOCK 87; BACKEND1: <GLOBALVAL_SUMMARY_BLOCK 88; BACKEND1: <VERSION 89; BACKEND1: <FLAGS 90; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}} 91; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}} 92; BACKEND1: <COMBINED 93; BACKEND1: <COMBINED 94; BACKEND1: </GLOBALVAL_SUMMARY_BLOCK 95 96; The backend index for Input/thinlto.ll contains summaries from itself only, 97; as it does not import anything. 98; BACKEND2: <MODULE_STRTAB_BLOCK 99; BACKEND2-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp2.o' 100; BACKEND2-NEXT: </MODULE_STRTAB_BLOCK 101; BACKEND2-NEXT: <GLOBALVAL_SUMMARY_BLOCK 102; BACKEND2-NEXT: <VERSION 103; BACKEND2-NEXT: <FLAGS 104; BACKEND2-NEXT: <VALUE_GUID op0=1 op1=-5300342847281564238 105; BACKEND2-NEXT: <COMBINED 106; BACKEND2-NEXT: </GLOBALVAL_SUMMARY_BLOCK 107 108target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 109target triple = "x86_64-unknown-linux-gnu" 110 111declare void @g(...) 112 113define void @f() { 114entry: 115 call void (...) @g() 116 ret void 117} 118