Optimize out no-op yield from statements
#5679
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i386 fails with:
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If the array is empty, then I'd expect that the generator is never left,
and that can be converted to a no-op and the return value would always be `null`.
Make `yield from [];` as efficient as `if (false) { yield null; }`
when opcache's sccp pass is enabled.
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nikic
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Jun 7, 2020
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If the array is empty, then I'd expect that the generator is never left,
and that can be converted to a no-op and the return value would always be
null.Make
yield from [];as efficient asif (false) { yield null; }when opcache's sccp pass is enabled.