mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-30 02:32:08 +00:00
21 lines
731 B
C++
21 lines
731 B
C++
|
#include "llvm/Analysis/LiveVar/LiveVarSet.h"
|
||
|
|
|
||
|
|
|
||
|
|
// This function applies an instruction to a live var set (accepts OutSet) and
|
||
|
|
// makes necessary changes to it (produces InSet)
|
||
|
|
|
||
|
|
void LiveVarSet::applyTranferFuncForInst(const Instruction *const Inst)
|
||
|
|
{
|
||
|
|
|
||
|
|
if( Inst->isDefinition() ) { // add to Defs iff this instr is a definition
|
||
|
|
remove(Inst); // this definition kills any uses
|
||
|
|
}
|
||
|
|
Instruction::op_const_iterator OpI = Inst->op_begin(); // get operand iterat
|
||
|
|
|
||
|
|
for( ; OpI != Inst->op_end() ; OpI++) { // iterate over operands
|
||
|
|
if ( ((*OpI)->getType())->isLabelType()) continue; // don't process labels
|
||
|
|
add( *OpI ); // An operand is a use - so add to use set
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|