------- Comment #14 from ubizjak at gmail dot com 2010-04-12 18:16 ------- (In reply to comment #13) > I can't read or write assembler, but searching the interweb tells me that sahf > is not valid in 64-bit mode, e.g. > http://www.x86-64.org/pipermail/discuss/2004-April/004615.html and also > "Introduction to 80x86 Assembly Language and Computer Architecture" by Richard > C. Detmer > > Why is that instruction being issued when compiling amd64/libgfortran?
Don't worry about this insn, it works for core2. The problem is that your ./configure claims that assembler supports this mnemonic (Comment #4) while in comment #11, it doesn't. Can you debug this a bit, I don't have binutils-2.15 here anymore. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43733
