Created attachment 871663 [details] build.log (ppc64, 16.0.6) Getting that with gcc:13 rebuild on my Talos II: [...] [229/1235] cd /var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64 && /var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen -gen-riscv-vector-builtins -I /var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include/clang/Basic -I/var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include -I/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/include -I/usr/lib/llvm/16/include /var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include/clang/Basic/riscv_vector.td --write-if-changed -o include/clang/Basic/riscv_vector_builtins.inc -d include/clang/Basic/riscv_vector_builtins.inc.d FAILED: include/clang/Basic/riscv_vector_builtins.inc /var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/include/clang/Basic/riscv_vector_builtins.inc cd /var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64 && /var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen -gen-riscv-vector-builtins -I /var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include/clang/Basic -I/var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include -I/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/include -I/usr/lib/llvm/16/include /var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include/clang/Basic/riscv_vector.td --write-if-changed -o include/clang/Basic/riscv_vector_builtins.inc -d include/clang/Basic/riscv_vector_builtins.inc.d #0 0x000000012f6cdcb4 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen+0x12dcb4) #1 0x000000012f6cb32c llvm::sys::RunSignalHandlers() (/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen+0x12b32c) #2 0x000000012f6cb54c SignalHandler(int) Signals.cpp.o:0:0 #3 0x00003fff88fb2424 (linux-vdso64.so.1+0x424) #4 0x000000012f5f1454 clang::RISCV::RVVIntrinsic::RVVIntrinsic(llvm::StringRef, llvm::StringRef, llvm::StringRef, llvm::StringRef, llvm::StringRef, bool, bool, bool, clang::RISCV::PolicyScheme, bool, bool, llvm::StringRef, std::vector<clang::RISCV::RVVType*, std::allocator<clang::RISCV::RVVType*>> const&, std::vector<long, std::allocator<long>> const&, std::vector<llvm::StringRef, std::allocator<llvm::StringRef>> const&, unsigned int, clang::RISCV::Policy) (/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen+0x51454) #5 0x000000012f666e2c (anonymous namespace)::RVVEmitter::createRVVIntrinsics(std::vector<std::unique_ptr<clang::RISCV::RVVIntrinsic, std::default_delete<clang::RISCV::RVVIntrinsic>>, std::allocator<std::unique_ptr<clang::RISCV::RVVIntrinsic, std::default_delete<clang::RISCV::RVVIntrinsic>>>>&, std::vector<(anonymous namespace)::SemaRecord, std::allocator<(anonymous namespace)::SemaRecord>>*) (.constprop.0) RISCVVEmitter.cpp:0:0 #6 0x000000012f6677e4 clang::EmitRVVBuiltins(llvm::RecordKeeper&, llvm::raw_ostream&) (/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen+0xc77e4) #7 0x000000012f672a34 (anonymous namespace)::ClangTableGenMain(llvm::raw_ostream&, llvm::RecordKeeper&) TableGen.cpp:0:0 #8 0x000000012f6dace0 llvm::TableGenMain(char const*, bool (*)(llvm::raw_ostream&, llvm::RecordKeeper&)) (/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen+0x13ace0) #9 0x000000012f5e952c main (/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen+0x4952c) #10 0x00003fff887e4ba4 (/lib64/libc.so.6+0x24ba4) #11 0x00003fff887e4e08 __libc_start_main (/lib64/libc.so.6+0x24e08) PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace. Stack dump: 0. Program arguments: /var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/bin/clang-tblgen -gen-riscv-vector-builtins -I /var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include/clang/Basic -I/var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include -I/var/tmp/portage/sys-devel/clang-16.0.6/work/x/y/clang-.ppc64/include -I/usr/lib/llvm/16/include /var/tmp/portage/sys-devel/clang-16.0.6/work/clang/include/clang/Basic/riscv_vector.td --write-if-changed -o include/clang/Basic/riscv_vector_builtins.inc -d include/clang/Basic/riscv_vector_builtins.inc.d ninja: build stopped: subcommand failed. * ERROR: sys-devel/clang-16.0.6::gentoo failed (compile phase): * ninja -v -j1 -l0 distribution failed I found out it build ok with '-O2', so I checked out a few other options. Seems gcc:13 is the only compiler failing at building sys-devel/clang-16.0.6 with '-Os'. COMMON_FLAGS="-Os -mcpu=power9 -mtune=power9 -pipe" gcc-13.2.1_p20230826 ... FAIL gcc-12.3.1_p20230526 ... builds OK clang-16.0.6 ... builds OK COMMON_FLAGS="-O2 -mcpu=power9 -mtune=power9 -pipe" gcc-13.2.1_p20230826 ... builds OK gcc-12.3.1_p20230526 ... builds OK clang-16.0.6 ... builds OK
Created attachment 871664 [details] emerge --info
If you have access to ppc64le: does it happen there?
(In reply to Sam James from comment #2) > If you have access to ppc64le: does it happen there? Nope, sorry. Still no ppc64le partition on my Talos yet. :(
Created attachment 885000 [details] build.log (ppc64, 17.0.6) Same with 17.0.6 on ppc64. On amd64 clang-17.0.6 builds fine with -Os.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=2af06d2df0b0d41594490a46fb239b1ed587a76d commit 2af06d2df0b0d41594490a46fb239b1ed587a76d Author: Sam James <sam@gentoo.org> AuthorDate: 2024-03-27 06:21:13 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2024-03-27 06:24:42 +0000 sys-devel/llvm: add workaround for ppc with < GCC 14 Pass -fno-ipa-sra -fno-ipa-modref -fno-ipa-icf on ppc with < GCC 14. We know the problem is related to IPA and these 3 together help. Someone is welcome to spend the time trying to narrow it down more, but applying this as a bandaid which is better than nothing. GCC 14 seems fine without this, but the "fix" bisects to something odd just like the original "break" commit, so... Bug: https://gcc.gnu.org/PR108250 Bug: https://bugs.gentoo.org/914888 Closes: https://bugs.gentoo.org/880677 Closes: https://bugs.gentoo.org/875776 Signed-off-by: Sam James <sam@gentoo.org> sys-devel/llvm/llvm-15.0.7-r3.ebuild | 7 ++++++- sys-devel/llvm/llvm-16.0.6.ebuild | 5 +++++ sys-devel/llvm/llvm-17.0.6.ebuild | 5 +++++ sys-devel/llvm/llvm-18.1.2.ebuild | 5 +++++ sys-devel/llvm/llvm-19.0.0.9999.ebuild | 5 +++++ sys-devel/llvm/llvm-19.0.0_pre20240316.ebuild | 5 +++++ sys-devel/llvm/llvm-19.0.0_pre20240322.ebuild | 5 +++++ 7 files changed, 36 insertions(+), 1 deletion(-)
The above commit won't fix it on PPC64, but it might be inspiration for a fix/workaround if this is still a problem...
