On Tue, Oct 17, 2017 at 3:58 AM, Andrew Haley <aph@xxxxxxxxxx> wrote: > On 17/10/17 08:32, Jeffrey Walton wrote: >> GCC guesses wrong on occasion. It will remove code that has value that >> but does not produce an output because the language does not allow us >> to express it. >> >> The C language lacks what we need to express what we need to do. Its a >> failure of the C (and C++) committees. Its not a GCC failure. > > I disagree. If you want a bunch of asms to execute in a particular > order, add a memory clobber or some dependencies. It's not difficult > once you have the understanding. In this particular case, fixing it > is trivial, and there are many ways to do it. Forgive my ignorance... How does one do it without ASM and in a cross-platform fashion? Jeff
