At the LLVM Bay Area meetup this question came up
“What does -O0 mean to you?”
A. No transformations, straight translation
B. Transformations that don’t inhibit debuggability
C. B + no undefined behavior
D. Something else, explain
#Cplusplus #Programming #CppPolls
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Yeah, but that’s GDB’s fault.
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Well, it’s a chicken and egg problem… -O0 can’t improve without breaking GDB, while GDB has no incentive to improve until -O0 improves…
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Well, it should be able to, but sometimes can't.
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“Many core” as in parallelism! Foiled by races again!
End of conversation
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