Date: Sat, 10 Apr 2021 14:04:16 GMT From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: bae9fd0b3346 - main - Only use -fp-exception-behavior=maytrap on x86, for now Message-ID: <202104101404.13AE4G9i055513@gitrepo.freebsd.org>
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The branch main has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=bae9fd0b33462e9506c3ac3400089c6dbc4aee8f commit bae9fd0b33462e9506c3ac3400089c6dbc4aee8f Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2021-04-10 14:02:49 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2021-04-10 14:02:58 +0000 Only use -fp-exception-behavior=maytrap on x86, for now After 3b00222f156d, it turns out that clang only supports strict floating point semantics for SystemZ and x86 at the moment, while for other architectures it is still experimental. Therefore, only use -fp-exception-behavior=maytrap on x86 for now, otherwise this option results in "error: overriding currently unsupported use of floating point exceptions on this target [-Werror,-Wunsupported-floating-point-opt]" on other architectures. Fixes: 3b00222f156d PR: 254911 MFC after: 1 week --- lib/msun/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/msun/Makefile b/lib/msun/Makefile index 959dbd113ec1..0a486bb5a086 100644 --- a/lib/msun/Makefile +++ b/lib/msun/Makefile @@ -35,7 +35,8 @@ CFLAGS+= -I${.CURDIR}/ld128 CFLAGS+= -I${.CURDIR}/${ARCH_SUBDIR} .include <bsd.compiler.mk> -.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 100000 +.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 100000 && \ + (${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386") # When using clang with x86_64 CPUs that support AVX, some floating point # transformations may raise exceptions that would not have been raised by the # original code. To avoid this, use the -fp-exception-behavior=maytrap flag,
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