Change LONG constants into DOUBLE, if they are going to be used as DOUBLE.

Sorry for that... Merged by accident....

Revert "Transparently introduce type-specialized opcode handlers."

This reverts commit 59d00b8bcc05f72b29c3c768542b2bb6e69e1af4.

Transparently introduce type-specialized opcode handlers.
This affects only PHP VM, and doesn't change anything else.

Convert LONG constants to DOUBLE, when later they are going to be used as DOUBLE

Remove NOPs after DFA pass.

Support dropping rc1/rcn from dumps

For non-JIT we're not interested in rc inference.

Use more general optimisation patterns

Remove EXT_TYPE_UNUSED in favor of IS_UNUSED

This means we no longer allocate an unused VAR for the retval of
instructions that support unused results.

Nearly all instructions a

Remove EXT_TYPE_UNUSED in favor of IS_UNUSED

This means we no longer allocate an unused VAR for the retval of
instructions that support unused results.

Nearly all instructions already used the result variable only if
it was used. The only exception to this was the return value
variable for internal function call results. I've adjusted the code
to use a stack zval for the unused return case now. As we have
retval specialization now, we know that it doesn't matter.

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Improve the names

Added optimization constraint (don't optimize result of NEW, because constructor may throw exception)

Typo (ASSESS->ACCESS)

Use ZEND_FUNC_INDIRECT_VAR_ASSESS instead of ZEND_FUNC_TOO_DYNAMIC. Handle function with exceptions handlers and generators separately.

Happy new year (Update copyright to 2016)

Rearrange code to enable inner precedure inference

Added call-graph analyses

Add another DFA optimization pattern (ASSIGN -> QM_ASSING)

Added simple DFA optimisation pattern (just to prove the concept)

Added e-SSA based DFA optimisation framework (incomplete)

ws fixes

Added e-SSA based DFA optimisation framework (incomplete)