question: void replaceUses ( Instruction s , HeapOperand < Object > [ ] H ) { if ( VM . VerifyAssertions ) VM . _assert ( s . operator ( ) != PHI ) ; uses . put ( s , H ) ; for ( HeapOperand < Object > aH : H ) { aH . setInstruction ( s ) ; } }
target:  Register that an instruction now uses the set of heap operands