Date: Mon, 11 Dec 2017 05:04:37 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-toolchain@FreeBSD.org Subject: [Bug 223415] lang/rust: don't require SSE2 on i386 (at least for binary packages) Message-ID: <bug-223415-29464-QCRgJQaMlX@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-223415-29464@https.bugs.freebsd.org/bugzilla/> References: <bug-223415-29464@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223415 --- Comment #13 from Jan Beich <jbeich@FreeBSD.org> --- (In reply to Bertrand Petit from comment #12) > $ objdump -d usr/local/bin/rg | grep xmm [...] WITH_DEBUG=3D1 port build contains symbol names. It seems xmm registers are= used by __floatdidf and __floatundidf from compiler-rt. Rust compiler always includes optimized routines on i386 but not always uses them. If my understanding is correct then the code is dead. # Rust 1.22.1 https://github.com/rust-lang-nursery/compiler-builtins/blob/0b9844764ea1/bu= ild.rs#L3977 https://github.com/rust-lang-nursery/compiler-builtins/blob/0b9844764ea1/sr= c/float/conv.rs#L91 https://github.com/rust-lang-nursery/compiler-builtins/blob/0b9844764ea1/sr= c/float/conv.rs#L120 https://github.com/rust-lang/compiler-rt/blob/c8a8767c56ad/lib/builtins/i38= 6/floatdidf.S https://github.com/rust-lang/compiler-rt/blob/c8a8767c56ad/lib/builtins/i38= 6/floatundidf.S --=20 You are receiving this mail because: You are on the CC list for the bug.=
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