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Stop processing invalidated instructions in dataflow

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This commit is contained in:
nemerle 2016-04-22 10:36:29 +02:00
parent 9129d48429
commit bb007ddefc
1 changed files with 5 additions and 0 deletions
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5
src/dataflow.cpp
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@ -885,6 +885,7 @@ void BB::findBBExps(LOCAL_ID &locals,Function *fnc)
auto valid_and_highlevel = instructions | filtered(ICODE::TypeAndValidFilter<HIGH_LEVEL>());
for (auto picode = valid_and_highlevel.begin(); picode != valid_and_highlevel.end(); picode++)
{
ICODE &_ic(*picode);
HLTYPE &_icHl(*picode->hlU());
numHlIcodes++;
if (picode->du1.getNumRegsDef() == 1) /* uint8_t/uint16_t regs */
@ -1115,6 +1116,10 @@ void BB::findBBExps(LOCAL_ID &locals,Function *fnc)
} /* eos */
}
}
if( not _ic.valid())
continue; // instruction was invalidated, try the next one
/* HLI_PUSH doesn't define any registers, only uses registers.
* Push the associated expression to the register on the local
* expression stack */