What kind of "strange behavior" are you getting? Segfaults, wrong results, or something else entirely?
Your code looks okay to me at a glance, but I'd be inclined to think it's still a problem on your end. asm! mostly plumbs down to LLVM for expansion, and the odds of LLVM having a bug there are lower than those of you having a bug. Have you looked at the generated assembly to see what it's doing (--emit asm)? I'd guess there's a problem with the constraints you're specifying, which will probably be pretty obvious. You'll probably see wrong values going into the inline assembly block or the computation clobbering a register used soon afterward. On Sat, Sep 20, 2014 at 3:20 PM, silvio <silvio.fris...@gmail.com> wrote: > Hello > > I've been trying to replicate an SSE trick from a c program in rust and > come up with some strange behavior. It seems work for --opt-level 0,1 > but gives the wrong result on 2,3. I used the !asm instruction to > execute assembly commands. > > I'm not sure if this is a bug or just me not using asm! correctly. > > The most condensed version that still produces the bug is appended. > > on opt 0,1 I get the correct answer 2 > on opt 2,3 I get the wrong answer 0 > > Silvio > > _______________________________________________ > Rust-dev mailing list > Rust-dev@mozilla.org > https://mail.mozilla.org/listinfo/rust-dev > -- Peter Marheine Don't Panic _______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev
