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Re: avoid unnecessary register saves for setjmp


I'm going to take this opportunity to throw in a suggestion I've made
before, which is that setjmp/longjmp should - always, not just when
special variants are used - be converted by the front end into
invocations of the exception-unwinding facility, which gives us tons
more control.  (Obviously this only works with DWARF2 exception
handling.)

zw


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