[clang] [llvm] [DTLTO][Clang] Add support for Integrated Distributed ThinLTO (PR #147265)
Prabhu Rajasekaran via llvm-commits
llvm-commits at lists.llvm.org
Tue Jul 15 08:24:07 PDT 2025
Prabhuk wrote:
Clang :: Driver/DTLTO/dtlto.c test is failing in our toolchain builders.
See full log here: https://logs.chromium.org/logs/fuchsia/buildbucket/cr-buildbucket/8709270904931005265/+/u/clang/tests/stdout
```
Exit Code: 1
Command Output (stderr):
--
/b/s/w/ir/x/w/llvm_build/bin/clang -flto=thin /b/s/w/ir/x/w/llvm-llvm-project/clang/test/Driver/DTLTO/dtlto.c -### -fuse-ld=lld --target=x86_64-linux-gnu -Xthinlto-distributor=a1 -Xthinlto-distributor=a2,a3 -fthinlto-distributor=d.exe -Werror 2>&1 | /b/s/w/ir/x/w/llvm_build/bin/FileCheck /b/s/w/ir/x/w/llvm-llvm-project/clang/test/Driver/DTLTO/dtlto.c --check-prefix=FORWARD # RUN: at line 6
+ /b/s/w/ir/x/w/llvm_build/bin/FileCheck /b/s/w/ir/x/w/llvm-llvm-project/clang/test/Driver/DTLTO/dtlto.c --check-prefix=FORWARD
+ /b/s/w/ir/x/w/llvm_build/bin/clang -flto=thin /b/s/w/ir/x/w/llvm-llvm-project/clang/test/Driver/DTLTO/dtlto.c -### -fuse-ld=lld --target=x86_64-linux-gnu -Xthinlto-distributor=a1 -Xthinlto-distributor=a2,a3 -fthinlto-distributor=d.exe -Werror
/b/s/w/ir/x/w/llvm-llvm-project/clang/test/Driver/DTLTO/dtlto.c:14:18: error: FORWARD-SAME: expected string not found in input
// FORWARD-SAME: "--thinlto-distributor-arg=a1"
^
<stdin>:6:875: note: scanning from here
"/b/s/w/ir/x/w/llvm_build/bin/ld.lld" "--hash-style=gnu" "--build-id" "--eh-frame-hdr" "-m" "elf_x86_64" "-pie" "-dynamic-linker" "/lib64/ld-linux-x86-64.so.2" "-o" "a.out" "/lib/x86_64-linux-gnu/Scrt1.o" "/lib/x86_64-linux-gnu/crti.o" "crtbeginS.o" "-L/lib/x86_64-linux-gnu" "-L/lib/../lib64" "-L/usr/lib/x86_64-linux-gnu" "-L/usr/lib64" "-L/lib" "-L/usr/lib" "-plugin-opt=mcpu=x86-64" "-plugin-opt=thinlto" "--thinlto-distributor=d.exe" "--thinlto-remote-compiler=/b/s/w/ir/x/w/llvm_build/bin/llvm" "--thinlto-distributor-arg=a1" "--thinlto-distributor-arg=a2" "--thinlto-distributor-arg=a3" "/b/s/w/ir/x/t/lit-tmp-7dk9usqs/dtlto-d79331.o" "/b/s/w/ir/x/w/llvm_build/lib/clang/22/lib/x86_64-unknown-linux-gnu/libclang_rt.builtins.a" "--as-needed" "-lunwind" "--no-as-needed" "-lc" "/b/s/w/ir/x/w/llvm_build/lib/clang/22/lib/x86_64-unknown-linux-gnu/libclang_rt.builtins.a" "--as-needed" "-lunwind" "--no-as-needed" "crtendS.o" "/lib/x86_64-linux-gnu/crtn.o"
^
<stdin>:6:940: note: possible intended match here
"/b/s/w/ir/x/w/llvm_build/bin/ld.lld" "--hash-style=gnu" "--build-id" "--eh-frame-hdr" "-m" "elf_x86_64" "-pie" "-dynamic-linker" "/lib64/ld-linux-x86-64.so.2" "-o" "a.out" "/lib/x86_64-linux-gnu/Scrt1.o" "/lib/x86_64-linux-gnu/crti.o" "crtbeginS.o" "-L/lib/x86_64-linux-gnu" "-L/lib/../lib64" "-L/usr/lib/x86_64-linux-gnu" "-L/usr/lib64" "-L/lib" "-L/usr/lib" "-plugin-opt=mcpu=x86-64" "-plugin-opt=thinlto" "--thinlto-distributor=d.exe" "--thinlto-remote-compiler=/b/s/w/ir/x/w/llvm_build/bin/llvm" "--thinlto-distributor-arg=a1" "--thinlto-distributor-arg=a2" "--thinlto-distributor-arg=a3" "/b/s/w/ir/x/t/lit-tmp-7dk9usqs/dtlto-d79331.o" "/b/s/w/ir/x/w/llvm_build/lib/clang/22/lib/x86_64-unknown-linux-gnu/libclang_rt.builtins.a" "--as-needed" "-lunwind" "--no-as-needed" "-lc" "/b/s/w/ir/x/w/llvm_build/lib/clang/22/lib/x86_64-unknown-linux-gnu/libclang_rt.builtins.a" "--as-needed" "-lunwind" "--no-as-needed" "crtendS.o" "/lib/x86_64-linux-gnu/crtn.o"
^
Input file: <stdin>
Check file: /b/s/w/ir/x/w/llvm-llvm-project/clang/test/Driver/DTLTO/dtlto.c
-dump-input=help explains the following input dump.
Input was:
<<<<<<
1: Fuchsia clang version 22.0.0git (https://llvm.googlesource.com/llvm-project 20b47bfdb5aee6e66d06342c275d56477371dc4e)
2: Target: x86_64-unknown-linux-gnu
3: Thread model: posix
4: InstalledDir: /b/s/w/ir/x/w/llvm_build/bin
5: "/b/s/w/ir/x/w/llvm_build/bin/llvm" "clang" "-cc1" "-triple" "x86_64-unknown-linux-gnu" "-emit-llvm-bc" "-flto=thin" "-flto-unit" "-dumpdir" "a-" "-disable-free" "-clear-ast-before-backend" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "dtlto.c" "-mrelocation-model" "pic" "-pic-level" "2" "-pic-is-pie" "-mframe-pointer=all" "-fmath-errno" "-ffp-contract=on" "-fno-rounding-math" "-mconstructor-aliases" "-funwind-tables=2" "-target-cpu" "x86-64" "-tune-cpu" "generic" "-debugger-tuning=gdb" "-fdebug-compilation-dir=/b/s/w/ir/x/w/llvm_build/tools/clang/test/Driver/DTLTO" "-fcoverage-compilation-dir=/b/s/w/ir/x/w/llvm_build/tools/clang/test/Driver/DTLTO" "-resource-dir" "/b/s/w/ir/x/w/llvm_build/lib/clang/22" "-internal-isystem" "/b/s/w/ir/x/w/llvm_build/lib/clang/22/include" "-internal-isystem" "/usr/local/include" "-internal-externc-isystem" "/usr/include/x86_64-linux-gnu" "-internal-externc-isystem" "/include" "-internal-externc-isystem" "/usr/include" "-Werror" "-ferror-limit" "19" "-fgnuc-version=4.2.1" "-fskip-odr-check-in-gmf" "-faddrsig" "-D__GCC_HAVE_DWARF2_CFI_ASM=1" "-o" "/b/s/w/ir/x/t/lit-tmp-7dk9usqs/dtlto-d79331.o" "-x" "c" "/b/s/w/ir/x/w/llvm-llvm-project/clang/test/Driver/DTLTO/dtlto.c"
6: "/b/s/w/ir/x/w/llvm_build/bin/ld.lld" "--hash-style=gnu" "--build-id" "--eh-frame-hdr" "-m" "elf_x86_64" "-pie" "-dynamic-linker" "/lib64/ld-linux-x86-64.so.2" "-o" "a.out" "/lib/x86_64-linux-gnu/Scrt1.o" "/lib/x86_64-linux-gnu/crti.o" "crtbeginS.o" "-L/lib/x86_64-linux-gnu" "-L/lib/../lib64" "-L/usr/lib/x86_64-linux-gnu" "-L/usr/lib64" "-L/lib" "-L/usr/lib" "-plugin-opt=mcpu=x86-64" "-plugin-opt=thinlto" "--thinlto-distributor=d.exe" "--thinlto-remote-compiler=/b/s/w/ir/x/w/llvm_build/bin/llvm" "--thinlto-distributor-arg=a1" "--thinlto-distributor-arg=a2" "--thinlto-distributor-arg=a3" "/b/s/w/ir/x/t/lit-tmp-7dk9usqs/dtlto-d79331.o" "/b/s/w/ir/x/w/llvm_build/lib/clang/22/lib/x86_64-unknown-linux-gnu/libclang_rt.builtins.a" "--as-needed" "-lunwind" "--no-as-needed" "-lc" "/b/s/w/ir/x/w/llvm_build/lib/clang/22/lib/x86_64-unknown-linux-gnu/libclang_rt.builtins.a" "--as-needed" "-lunwind" "--no-as-needed" "crtendS.o" "/lib/x86_64-linux-gnu/crtn.o"
same:14'0 X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
same:14'1 ? possible intended match
>>>>>>
--
```
https://github.com/llvm/llvm-project/pull/147265
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