Messages in this thread | | | Date | Sun, 11 Aug 2002 12:06:57 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [patch 4/21] fix ARCH_HAS_PREFETCH |
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On Sun, 11 Aug 2002, Andrew Morton wrote: > > It's actually a special-case inside the compiler to not optimise > away such constructs.
I thought that special case was removed long ago, because it is untenable in C++ etc (where such empty loops happen due to various abstraction issues, and not optimizing them away is just silly).
But testing shows that you're right at least for 2.95 and 2.96. Argh
Linus
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