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 generates error if unable to write to index file 30; RUN: rm -f %t4.o.thinlto.bc 31; RUN: touch %t4.o.thinlto.bc 32; RUN: chmod 400 %t4.o.thinlto.bc 33; RUN: 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 34; ERR: failed to write {{.*}}4.o.thinlto.bc: Permission denied 35 36; First force single-threaded mode 37; RUN: rm -f %t.lto.o %t1.lto.o 38; RUN: ld.lld -save-temps --thinlto-jobs=1 -shared %t.o %t2.o -o %t 39; RUN: llvm-nm %t1.lto.o | FileCheck %s --check-prefix=NM1 40; RUN: llvm-nm %t2.lto.o | FileCheck %s --check-prefix=NM2 41 42; Next force multi-threaded mode 43; RUN: rm -f %t2.lto.o %t21.lto.o 44; RUN: ld.lld -save-temps --thinlto-jobs=2 -shared %t.o %t2.o -o %t2 45; RUN: llvm-nm %t21.lto.o | FileCheck %s --check-prefix=NM1 46; RUN: llvm-nm %t22.lto.o | FileCheck %s --check-prefix=NM2 47 48; Then check without --thinlto-jobs (which currently default to hardware_concurrency) 49; We just check that we don't crash or fail (as it's not sure which tests are 50; stable on the final output file itself. 51; RUN: ld.lld -shared %t.o %t2.o -o %t2 52 53; NM: T f 54; NM1: T f 55; NM1-NOT: U g 56; NM2: T g 57 58; The backend index for this module contains summaries from itself and 59; Inputs/thinlto.ll, as it imports from the latter. 60; BACKEND1: <MODULE_STRTAB_BLOCK 61; BACKEND1-NEXT: <ENTRY {{.*}} record string = '{{.*}}/thinlto.ll.tmp{{.*}}.o' 62; BACKEND1-NEXT: <ENTRY {{.*}} record string = '{{.*}}/thinlto.ll.tmp{{.*}}.o' 63; BACKEND1-NEXT: </MODULE_STRTAB_BLOCK 64; BACKEND1: <GLOBALVAL_SUMMARY_BLOCK 65; BACKEND1: <VERSION 66; BACKEND1: <FLAGS 67; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}} 68; BACKEND1: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}} 69; BACKEND1: <COMBINED 70; BACKEND1: <COMBINED 71; BACKEND1: </GLOBALVAL_SUMMARY_BLOCK 72 73; The backend index for Input/thinlto.ll contains summaries from itself only, 74; as it does not import anything. 75; BACKEND2: <MODULE_STRTAB_BLOCK 76; BACKEND2-NEXT: <ENTRY {{.*}} record string = '{{.*}}/thinlto.ll.tmp2.o' 77; BACKEND2-NEXT: </MODULE_STRTAB_BLOCK 78; BACKEND2-NEXT: <GLOBALVAL_SUMMARY_BLOCK 79; BACKEND2-NEXT: <VERSION 80; BACKEND2-NEXT: <FLAGS 81; BACKEND2-NEXT: <VALUE_GUID op0=1 op1=-5300342847281564238 82; BACKEND2-NEXT: <COMBINED 83; BACKEND2-NEXT: </GLOBALVAL_SUMMARY_BLOCK 84 85target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 86target triple = "x86_64-unknown-linux-gnu" 87 88declare void @g(...) 89 90define void @f() { 91entry: 92 call void (...) @g() 93 ret void 94} 95