pengfei added a comment. In D107082#3626632 <https://reviews.llvm.org/D107082#3626632>, @sylvestre.ledru wrote:
> Same as in https://reviews.llvm.org/D114099 > It breaks the build on ubuntu bionic, Hirsute, etc on amd64: > > > "/build/llvm-toolchain-snapshot-15~++20220702091600+23ee84f43201/build-llvm/./bin/clang" > --target=x86_64-pc-linux-gnu -DVISIBILITY_HIDDEN -fstack-protector-strong > -Wformat -Werror=format-security -Wno-unused-command-line-argument > -Wdate-time -D_FORTIFY_SOURCE=2 -O3 -DNDEBUG -m32 -DCOMPILER_RT_HAS_FLOAT16 > -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -MD -MT > CMakeFiles/clang_rt.builtins-i386.dir/extendhfsf2.c.o -MF > CMakeFiles/clang_rt.builtins-i386.dir/extendhfsf2.c.o.d -o > CMakeFiles/clang_rt.builtins-i386.dir/extendhfsf2.c.o -c > '/build/llvm-toolchain-snapshot-15~++20220702091600+23ee84f43201/compiler-rt/lib/builtins/extendhfsf2.c' > In file included from > /build/llvm-toolchain-snapshot-15~++20220702091600+23ee84f43201/compiler-rt/lib/builtins/extendhfsf2.c:11: > In file included from > /build/llvm-toolchain-snapshot-15~++20220702091600+23ee84f43201/compiler-rt/lib/builtins/fp_extend_impl.inc:38: > > /build/llvm-toolchain-snapshot-15~++20220702091600+23ee84f43201/compiler-rt/lib/builtins/fp_extend.h:44:9: > error: _Float16 is not supported on this target > typedef _Float16 src_t; > ^ > 1 error generated. Hi @sylvestre.ledru , thanks for reporting this issue. It looks to me a configuration (or option mismatch) problem in compiler-rt. We support the `_Float16` type on targets that have SSE2 and/or up features. A 32-bit target doesn't enable SSE2 feature by default. This should be fine because the cmake of compiler-rt will detect the buildable of `_Float16` first and set `COMPILER_RT_HAS_FLOAT16` accordingly. So this issue looks to me it passed the detection of `_Float16` with a SSE2 enabled option but built the compiler-rt with a different option (SSE2 disabled). I'd suggest to add an extra `-msse2` when build it if possible. Otherwise, don't let `-DCOMPILER_RT_HAS_FLOAT16` been passed here. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D107082/new/ https://reviews.llvm.org/D107082 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
