Does sysroot-suffix.h need to be installed?
Does sysroot-suffix.h need to be installed even when it's empty? Does anything outside of gcc actually use it? Can it be left out or given a blank line? I notice that not all targets produce such a file. The reason I ask is that rpmlint gives an error on empty files, and sysroot-suffix.h is empty at least for m68k. David
Do macro_list and fixinc.sh need to be installed?
Hi, Do the macro_list and fixinc.sh files need to be installed? Does anything outside of gcc actually use them? If macro_list is a zero length file, can it be left out of the installation (fixinc.sh seems to test for its presence before trying to use it) or given a blank line? The reason I ask is that rpmlint gives an error on empty files, and macro_list is empty at least for h8300 and sh64. David
Re: Compilers and RCU readers: Once more unto the breach!
Paul E. McKenney wrote: > Ah, I was assuming between x and z. David, what was your intent? ;-) Clarification. David
Re: Compilers and RCU readers: Once more unto the breach!
Paul E. McKenney wrote: > I was thinking of "y" as a simple variable, but if it is something more > complex, then the compiler could do this, right? > > char *x; > > y; > x = z; Yeah. I presume it has to maintain the ordering, though. David
Re: Compilers and RCU readers: Once more unto the breach!
Paul E. McKenney wrote: > > Additionally, what about the following code? > > > > char *x = y ? z : z; > > > > Does that extend a dependency chain from z to x? If so, I can imagine a > > CPU breaking that in practice. > > I am not seeing this. I would expect the compiler to optimize to > something like this: > > char *x = z; Why? What if y has a potential side-effect (say it makes a function call)? David
