Kris Kennaway wrote: [ ... ]
This is the trivial part (you don't even need to modify gcc, because all the optimizations turned on by -Ofoo are also available as individual -fblah options).
Indeed. If you've forgotten, I quoted the section of the gcc source code which indicates which individual -fblah options are enabled at -O1, -O2, -O3.
As I've already said, once you have a self-contained test-case that demonstrates that a particular gcc optimization level generates broken code, the gcc people will fix it.
Yes, I hope and believe they would. If you've also forgotten the origin of this thread, it was:
| The "known bugs" section of the GCC info documentation lists 5 issues; "man | gcc" lists none. Can someone provide a test case for a bug involving "cc -O" | versus "cc -O3" under FreeBSD 4-STABLE for the x86 architecture?
One might (reasonably and correctly) conclude that I was asking for examples of such test-cases.
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