Nikita Popov 19e886d9d8 Avoid throw expression leaks ...

Mark "throw" used in expression context with a flag, and don't
treat it as a BB terminator in that case. This prevents us from
optimizing away the following opcodes as unreachable, which may
result in live ranges being dropped incorrectly.

Close GH-5450.

2020-04-27 15:22:05 +02:00

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001.phpt

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002.phpt

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leaks.phpt

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