[ELF] Improve --thinlto-index-only and --thinlto-emit-index-files tests

4 files changed, 106 insertions, 119 deletions

diff --git a/lld/test/ELF/lto/thinlto-emit-imports.ll b/lld/test/ELF/lto/thinlto-emit-imports.ll
index fcddd18..6d0e1e6 100644
--- a/lld/test/ELF/lto/thinlto-emit-imports.ll
+++ b/lld/test/ELF/lto/thinlto-emit-imports.ll
@@ -1,32 +1,10 @@
 ; REQUIRES: x86
+;; Test a few properties not tested by thinlto-index-only.ll
 
-; Generate summary sections and test lld handling.
 ; RUN: opt -module-summary %s -o %t1.o
 ; RUN: opt -module-summary %p/Inputs/thinlto.ll -o %t2.o
-
-; Include a file with an empty module summary index, to ensure that the expected
-; output files are created regardless, for a distributed build system.
 ; RUN: opt -module-summary %p/Inputs/thinlto_empty.ll -o %t3.o
 
-; Ensure lld generates imports files if requested for distributed backends.
-; RUN: rm -f %t3.o.imports %t3.o.thinlto.bc
-; RUN: ld.lld --plugin-opt=thinlto-index-only --plugin-opt=thinlto-emit-imports-files -shared %t1.o %t2.o %t3.o -o %t4
-
-; The imports file for this module contains the bitcode file for
-; Inputs/thinlto.ll
-; RUN: count 1 < %t1.o.imports
-; RUN: FileCheck %s --check-prefix=IMPORTS1 < %t1.o.imports
-; IMPORTS1: thinlto-emit-imports.ll.tmp2.o
-
-; The imports file for Input/thinlto.ll is empty as it does not import anything.
-; RUN: count 0 < %t2.o.imports
-
-; The imports file for Input/thinlto_empty.ll is empty but should exist.
-; RUN: count 0 < %t3.o.imports
-
-; The index file should be created even for the input with an empty summary.
-; RUN: ls %t3.o.thinlto.bc
-
 ; Ensure lld generates error if unable to write to imports file.
 ; RUN: rm -f %t3.o.imports
 ; RUN: touch %t3.o.imports
@@ -34,22 +12,12 @@
 ; RUN: not ld.lld --plugin-opt=thinlto-index-only --plugin-opt=thinlto-emit-imports-files -shared %t1.o %t2.o %t3.o -o /dev/null 2>&1 | FileCheck -DMSG=%errc_EACCES %s --check-prefix=ERR
 ; ERR: cannot open {{.*}}3.o.imports: [[MSG]]
 
-; Ensure lld doesn't generate import files when thinlto-index-only is not enabled
-; RUN: rm -f %t1.o.imports
-; RUN: rm -f %t2.o.imports
-; RUN: rm -f %t3.o.imports
+; RUN: rm -f %t1.o.imports %t2.o.imports rm -f %t3.o.imports
 ; RUN: ld.lld --plugin-opt=thinlto-emit-imports-files -shared %t1.o %t2.o %t3.o -o %t4
 ; RUN: not ls %t1.o.imports
 ; RUN: not ls %t2.o.imports
 ; RUN: not ls %t3.o.imports
 
-; Check that imports files are generated also when --thinlto-index-only
-; is specified without --plugin-opt=.
-; RUN: rm -f %t1.o.imports
-; RUN: ld.lld --thinlto-index-only --thinlto-emit-imports-files -shared %t1.o %t2.o %t3.o -o %t4
-; RUN: count 1 < %t1.o.imports
-; RUN: FileCheck %s --check-prefix=IMPORTS1 < %t1.o.imports
-
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
diff --git a/lld/test/ELF/lto/thinlto-emit-index.ll b/lld/test/ELF/lto/thinlto-emit-index.ll
index ae8b4dd..ba2ac2c 100644
--- a/lld/test/ELF/lto/thinlto-emit-index.ll
+++ b/lld/test/ELF/lto/thinlto-emit-index.ll
@@ -3,40 +3,40 @@
 ;; Mostly copied/updated from thinlto-index-only.ll
 ;; First ensure that the ThinLTO handling in lld handles
 ;; bitcode without summary sections gracefully and generates index file.
-; RUN: rm -rf %t.dir && mkdir %t.dir && cd %t.dir
+; RUN: rm -rf %t && mkdir %t && cd %t
+; RUN: mkdir d
 ; RUN: llvm-as %s -o 1.o
-; RUN: llvm-as %p/Inputs/thinlto.ll -o 2.o
-; RUN: ld.lld --thinlto-emit-index-files -shared 1.o 2.o -o 3
-; RUN: ls 2.o.thinlto.bc
+; RUN: llvm-as %p/Inputs/thinlto.ll -o d/2.o
+; RUN: ld.lld --thinlto-emit-index-files -shared 1.o d/2.o -o 3
+; RUN: ls d/2.o.thinlto.bc
 ; RUN: ls 3
-; RUN: ld.lld -shared 1.o 2.o -o 3
+; RUN: ld.lld -shared 1.o d/2.o -o 3
 ; RUN: llvm-nm 3 | FileCheck %s --check-prefix=NM
 
 ;; Basic ThinLTO tests.
 ; RUN: opt -module-summary %s -o 1.o
-; RUN: opt -module-summary %p/Inputs/thinlto.ll -o 2.o
+; RUN: opt -module-summary %p/Inputs/thinlto.ll -o d/2.o
 ; RUN: opt -module-summary %p/Inputs/thinlto_empty.ll -o 3.o
+; RUN: cp 3.o 4.o
 
 ;; Ensure lld generates an index and also a binary if requested.
-; RUN: ld.lld --thinlto-emit-index-files -shared 1.o 2.o -o 4
-; RUN: llvm-bcanalyzer -dump 1.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
-; RUN: llvm-bcanalyzer -dump 2.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
+; RUN: ld.lld --thinlto-emit-index-files -shared 1.o --start-lib d/2.o 3.o --end-lib 4.o -o 4
 ; RUN: ls 4
+; RUN: llvm-bcanalyzer -dump 1.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
+; RUN: llvm-bcanalyzer -dump d/2.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
+; RUN: llvm-dis < 3.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND3
+; RUN: llvm-dis < 4.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND4
+
+; IMPORTS1: d/2.o
 
 ;; Ensure lld generates an index and not a binary if both emit-index and index-only are present.
-; RUN: ld.lld --thinlto-emit-index-files --thinlto-index-only -shared 1.o 2.o -o 5
+; RUN: ld.lld --thinlto-emit-index-files --thinlto-index-only -shared 1.o d/2.o -o 5
 ; RUN: not ls 5
 
-;; Ensure lld generates an index even if the file is wrapped in --start-lib/--end-lib
-; RUN: rm -f 2.o.thinlto.bc
-; RUN: ld.lld --thinlto-emit-index-files -shared 1.o 3.o --start-lib 2.o --end-lib -o 6
-; RUN: llvm-dis < 2.o.thinlto.bc | grep -q '\^0 = module:'
-; RUN: ls 6
-
 ;; Test that LLD generates an empty index even for lazy object file that is not added to link.
 ;; Test that LLD also generates empty imports file with the --thinlto-emit-imports-files option.
 ; RUN: rm -f 1.o.thinlto.bc 1.o.imports
-; RUN: ld.lld --thinlto-emit-index-files -shared 2.o --start-lib 1.o --end-lib \
+; RUN: ld.lld --thinlto-emit-index-files -shared d/2.o --start-lib 1.o --end-lib \
 ; RUN: --thinlto-emit-imports-files -o 7
 ; RUN: ls 7
 ; RUN: ls 1.o.thinlto.bc
@@ -50,19 +50,19 @@
 ; RUN: ls 1.o.thinlto.bc
 
 ;; Test that LLD errors out when run with suffix replacement, or prefix replacement
-; RUN: not ld.lld --thinlto-emit-index-files -shared 2.o --start-lib 1.o --end-lib \
+; RUN: not ld.lld --thinlto-emit-index-files -shared d/2.o --start-lib 1.o --end-lib \
 ; RUN: --thinlto-prefix-replace="abc;xyz" 2>&1 | FileCheck %s --check-prefix=ERR1
 ; ERR1: --thinlto-prefix-replace is not supported with --thinlto-emit-index-files
 
-; RUN: not ld.lld --thinlto-emit-index-files -shared 2.o --start-lib 1.o --end-lib \
+; RUN: not ld.lld --thinlto-emit-index-files -shared d/2.o --start-lib 1.o --end-lib \
 ; RUN: --thinlto-object-suffix-replace="abc;xyz" 2>&1 | FileCheck %s --check-prefix=ERR2
 ; ERR2: --thinlto-object-suffix-replace is not supported with --thinlto-emit-index-files
 
 ;; But not when passed with index only as well
-; RUN: ld.lld --thinlto-emit-index-files -shared 2.o --start-lib 1.o --end-lib \
+; RUN: ld.lld --thinlto-emit-index-files -shared d/2.o --start-lib 1.o --end-lib \
 ; RUN: --thinlto-prefix-replace="abc;xyz" --thinlto-index-only
 
-; RUN: ld.lld --thinlto-emit-index-files -shared 2.o --start-lib 1.o --end-lib \
+; RUN: ld.lld --thinlto-emit-index-files -shared d/2.o --start-lib 1.o --end-lib \
 ; RUN: --thinlto-object-suffix-replace="abc;xyz" --thinlto-index-only
 
 ; NM: T f
@@ -71,7 +71,7 @@
 ;; Inputs/thinlto.ll, as it imports from the latter.
 ; BACKEND1: <MODULE_STRTAB_BLOCK
 ; BACKEND1-NEXT: <ENTRY {{.*}} record string = '1.o'
-; BACKEND1-NEXT: <ENTRY {{.*}} record string = '2.o'
+; BACKEND1-NEXT: <ENTRY {{.*}} record string = 'd/2.o'
 ; BACKEND1-NEXT: </MODULE_STRTAB_BLOCK
 ; BACKEND1: <GLOBALVAL_SUMMARY_BLOCK
 ; BACKEND1: <VERSION
@@ -85,7 +85,7 @@
 ;; The backend index for Input/thinlto.ll contains summaries from itself only,
 ;; as it does not import anything.
 ; BACKEND2: <MODULE_STRTAB_BLOCK
-; BACKEND2-NEXT: <ENTRY {{.*}} record string = '2.o'
+; BACKEND2-NEXT: <ENTRY {{.*}} record string = 'd/2.o'
 ; BACKEND2-NEXT: </MODULE_STRTAB_BLOCK
 ; BACKEND2-NEXT: <GLOBALVAL_SUMMARY_BLOCK
 ; BACKEND2-NEXT: <VERSION
@@ -94,6 +94,10 @@
 ; BACKEND2-NEXT: <COMBINED
 ; BACKEND2-NEXT: </GLOBALVAL_SUMMARY_BLOCK
 
+; BACKEND3: ^0 = flags:
+
+; BACKEND4: ^0 = module: (path: "4.o", hash: (0, 0, 0, 0, 0))
+
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
diff --git a/lld/test/ELF/lto/thinlto-index-file.ll b/lld/test/ELF/lto/thinlto-index-file.ll
deleted file mode 100644
index 00feef7..0000000
--- a/lld/test/ELF/lto/thinlto-index-file.ll
+++ /dev/null
@@ -1,27 +0,0 @@
-; REQUIRES: x86
-; RUN: rm -rf %t && mkdir %t && cd %t
-; RUN: opt -module-summary %s -o 1.o
-; RUN: opt -module-summary %p/Inputs/thinlto.ll -o 2.o
-; RUN: opt -module-summary %p/Inputs/thinlto_empty.ll -o 3.o
-
-;; Ensure lld writes linked files to linked objects file
-; RUN: ld.lld --plugin-opt=thinlto-index-only=1.txt -shared 1.o 2.o 3.o -o /dev/null
-; RUN: FileCheck %s < 1.txt
-; CHECK: 1.o
-; CHECK: 2.o
-; CHECK: 3.o
-
-;; Check that this also works without the --plugin-opt= prefix.
-; RUN: ld.lld --thinlto-index-only=2.txt -shared 1.o 2.o 3.o -o /dev/null
-; RUN: diff 1.txt 2.txt
-
-target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-linux-gnu"
-
-declare void @g(...)
-
-define void @f() {
-entry:
-  call void (...) @g()
-  ret void
-}
diff --git a/lld/test/ELF/lto/thinlto-index-only.ll b/lld/test/ELF/lto/thinlto-index-only.ll
index 0b64958..abf58ce 100644
--- a/lld/test/ELF/lto/thinlto-index-only.ll
+++ b/lld/test/ELF/lto/thinlto-index-only.ll
@@ -1,46 +1,75 @@
 ; REQUIRES: x86
-; RUN: rm -rf %t && mkdir %t && cd %t
+; RUN: rm -rf %t && split-file %s %t && cd %t
+; RUN: mkdir d
 
 ;; First ensure that the ThinLTO handling in lld handles
 ;; bitcode without summary sections gracefully and generates index file.
-; RUN: llvm-as %s -o 1.o
-; RUN: llvm-as %p/Inputs/thinlto.ll -o 2.o
-; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o 2.o -o 3
-; RUN: ls 2.o.thinlto.bc
+; RUN: llvm-as 1.ll -o 1.o
+; RUN: llvm-as %p/Inputs/thinlto.ll -o d/2.o
+; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o d/2.o -o 3
+; RUN: ls d/2.o.thinlto.bc
 ; RUN: not test -e 3
-; RUN: ld.lld -shared 1.o 2.o -o 3
+; RUN: ld.lld -shared 1.o d/2.o -o 3
 ; RUN: llvm-nm 3 | FileCheck %s --check-prefix=NM
 
 ;; Basic ThinLTO tests.
-; RUN: opt -module-summary %s -o 1.o
-; RUN: opt -module-summary %p/Inputs/thinlto.ll -o 2.o
+; RUN: llvm-as 0.ll -o 0.o
+; RUN: opt -module-summary 1.ll -o 1.o
+; RUN: opt -module-summary %p/Inputs/thinlto.ll -o d/2.o
 ; RUN: opt -module-summary %p/Inputs/thinlto_empty.ll -o 3.o
+; RUN: cp 3.o 4.o
 
 ;; Ensure lld doesn't generates index files when --thinlto-index-only is not enabled.
-; RUN: rm -f 1.o.thinlto.bc 2.o.thinlto.bc
-; RUN: ld.lld -shared 1.o 2.o -o 5
+; RUN: rm -f 1.o.thinlto.bc d/2.o.thinlto.bc
+; RUN: ld.lld -shared 1.o d/2.o -o /dev/null
 ; RUN: not ls 1.o.thinlto.bc
-; RUN: not ls 2.o.thinlto.bc
+; RUN: not ls d/2.o.thinlto.bc
 
 ;; Ensure lld generates an index and not a binary if requested.
-; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o 2.o -o 4
+; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o --start-lib d/2.o 3.o --end-lib 4.o -o 4
+; RUN: not test -e 4
 ; RUN: llvm-bcanalyzer -dump 1.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
-; RUN: llvm-bcanalyzer -dump 2.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
+; RUN: llvm-bcanalyzer -dump d/2.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
+; RUN: llvm-dis < 3.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND3
+; RUN: llvm-dis < 4.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND4
+
+; RUN: rm -f 1.o.thinlto.bc d/2.o.thinlto.bc 3.o.thinlto.bc 4.o.thinlto.bc
+; RUN: ld.lld --plugin-opt=thinlto-index-only=4.txt --plugin-opt=thinlto-emit-imports-files -shared 1.o --start-lib d/2.o 3.o --end-lib 4.o -o 4
 ; RUN: not test -e 4
+; RUN: FileCheck %s --check-prefix=RSP --implicit-check-not={{.}} < 4.txt
+; RUN: llvm-bcanalyzer -dump 1.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
+; RUN: llvm-bcanalyzer -dump d/2.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
+; RUN: llvm-dis < 3.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND3
+; RUN: llvm-dis < 4.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND4
+; RUN: FileCheck %s --check-prefix=IMPORTS1 --implicit-check-not={{.}} < 1.o.imports
+; RUN: count 0 < d/2.o.imports
+;; Test that LLD generates an empty index even for lazy object file that is not added to link.
+; RUN: count 0 < 3.o.imports
+; RUN: count 0 < 4.o.imports
 
-;; Ensure lld generates an index even if the file is wrapped in --start-lib/--end-lib.
-; RUN: rm -f 2.o.thinlto.bc 4
-; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o 3.o --start-lib 2.o --end-lib -o 4
-; RUN: llvm-dis < 2.o.thinlto.bc | grep -q '\^0 = module:'
+;; Test the other spelling --thinlto-index-only= --thinlto-emit-imports-files and the interaction with --save-temps.
+; RUN: rm -f 4.txt 1.o.thinlto.bc d/2.o.thinlto.bc 3.o.thinlto.bc 4.o.thinlto.bc
+; RUN: ld.lld --thinlto-index-only=4.txt --thinlto-emit-imports-files --save-temps -shared 0.o 1.o --start-lib d/2.o 3.o --end-lib 4.o -o t
 ; RUN: not test -e 4
+; RUN: FileCheck %s --check-prefix=RSP --implicit-check-not={{.}} < 4.txt
+; RUN: llvm-bcanalyzer -dump 1.o.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
+; RUN: FileCheck %s --check-prefix=IMPORTS1 --implicit-check-not={{.}} < 1.o.imports
+; RUN: FileCheck %s --check-prefix=RESOLUTION < t.resolution.txt
+; RUN: llvm-dis < t.index.bc | FileCheck %s --check-prefix=INDEX-BC
 
-;; Test that LLD generates an empty index even for lazy object file that is not added to link.
-;; Test LLD generates empty imports file either because of thinlto-emit-imports-files option.
-; RUN: rm -f 1.o.thinlto.bc 1.o.imports
-; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 2.o --start-lib 1.o --end-lib \
-; RUN: --plugin-opt=thinlto-emit-imports-files -o 3
-; RUN: ls 1.o.thinlto.bc
-; RUN: ls 1.o.imports
+; RSP:      1.o
+; RSP-NEXT: d/2.o
+; RSP-NEXT: 4.o
+
+; IMPORTS1: d/2.o
+
+; RESOLUTION:      0.o
+; RESOLUTION-NEXT: -r=0.o,foo,px
+; RESOLUTION-NEXT: 1.o
+
+; INDEX-BC:      ^0 = module: (path: "1.o", hash: (0, 0, 0, 0, 0))
+; INDEX-BC-NEXT: ^1 = module: (path: "4.o", hash: (0, 0, 0, 0, 0))
+; INDEX-BC-NEXT: ^2 = module: (path: "d/2.o", hash: (0, 0, 0, 0, 0))
 
 ;; Ensure LLD generates an empty index for each bitcode file even if all bitcode files are lazy.
 ; RUN: rm -f 1.o.thinlto.bc
@@ -50,18 +79,18 @@
 
 ;; Ensure when the same bitcode object is given as both lazy and non-lazy,
 ;; LLD does not generate an empty index for the lazy object.
-; RUN: rm -f 2.o.thinlto.bc
-; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o 2.o --start-lib 2.o --end-lib -o /dev/null
-; RUN: llvm-dis < 2.o.thinlto.bc | grep -q '\^0 = module:'
-; RUN: rm -f 2.o.thinlto.bc
-; RUN: ld.lld --plugin-opt=thinlto-index-only -shared --start-lib 2.o --end-lib 2.o 1.o -o /dev/null
-; RUN: llvm-dis < 2.o.thinlto.bc | grep -q '\^0 = module:'
+; RUN: rm -f d/2.o.thinlto.bc
+; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o d/2.o --start-lib d/2.o --end-lib -o /dev/null
+; RUN: llvm-dis < d/2.o.thinlto.bc | grep -q '\^0 = module:'
+; RUN: rm -f d/2.o.thinlto.bc
+; RUN: ld.lld --plugin-opt=thinlto-index-only -shared --start-lib d/2.o --end-lib d/2.o 1.o -o /dev/null
+; RUN: llvm-dis < d/2.o.thinlto.bc | grep -q '\^0 = module:'
 
 ;; Ensure when the same lazy bitcode object is given multiple times,
 ;; no empty index file is generated if one of the copies is linked.
-; RUN: rm -f 2.o.thinlto.bc
-; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o --start-lib 2.o --end-lib --start-lib 2.o --end-lib -o /dev/null
-; RUN: llvm-dis < 2.o.thinlto.bc | grep -q '\^0 = module:'
+; RUN: rm -f d/2.o.thinlto.bc
+; RUN: ld.lld --plugin-opt=thinlto-index-only -shared 1.o --start-lib d/2.o --end-lib --start-lib d/2.o --end-lib -o /dev/null
+; RUN: llvm-dis < d/2.o.thinlto.bc | grep -q '\^0 = module:'
 
 ; NM: T f
 
@@ -69,7 +98,7 @@
 ;; Inputs/thinlto.ll, as it imports from the latter.
 ; BACKEND1: <MODULE_STRTAB_BLOCK
 ; BACKEND1-NEXT: <ENTRY {{.*}} record string = '1.o'
-; BACKEND1-NEXT: <ENTRY {{.*}} record string = '2.o'
+; BACKEND1-NEXT: <ENTRY {{.*}} record string = 'd/2.o'
 ; BACKEND1-NEXT: </MODULE_STRTAB_BLOCK
 ; BACKEND1: <GLOBALVAL_SUMMARY_BLOCK
 ; BACKEND1: <VERSION
@@ -83,7 +112,7 @@
 ;; The backend index for Input/thinlto.ll contains summaries from itself only,
 ;; as it does not import anything.
 ; BACKEND2: <MODULE_STRTAB_BLOCK
-; BACKEND2-NEXT: <ENTRY {{.*}} record string = '2.o'
+; BACKEND2-NEXT: <ENTRY {{.*}} record string = 'd/2.o'
 ; BACKEND2-NEXT: </MODULE_STRTAB_BLOCK
 ; BACKEND2-NEXT: <GLOBALVAL_SUMMARY_BLOCK
 ; BACKEND2-NEXT: <VERSION
@@ -92,6 +121,19 @@
 ; BACKEND2-NEXT: <COMBINED
 ; BACKEND2-NEXT: </GLOBALVAL_SUMMARY_BLOCK
 
+; BACKEND3: ^0 = flags:
+
+; BACKEND4: ^0 = module: (path: "4.o", hash: (0, 0, 0, 0, 0))
+
+;--- 0.ll
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @foo() {
+  ret void
+}
+
+;--- 1.ll
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"