SimpleSpillCost (Jikes RVM API)

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org.jikesrvm.compilers.opt.regalloc
Class SimpleSpillCost

java.lang.Object
  org.jikesrvm.compilers.opt.regalloc.SpillCostEstimator
      org.jikesrvm.compilers.opt.regalloc.SimpleSpillCost

An object that returns an estimate of the relative cost of spilling a symbolic register.

Constructor Summary
`SimpleSpillCost(IR ir)`

Method Summary
`(package private) void`	`calculate(IR ir)` Calculate the estimated cost for each register.
`(package private) static boolean`	`hasBadSizeMemoryOperand(Instruction s)` Does instruction s have a memory operand of an inconvenient size?

Methods inherited from class org.jikesrvm.compilers.opt.regalloc.SpillCostEstimator
`getCost, update`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

SimpleSpillCost(IR ir)

Method Detail

void calculate(IR ir)

Description copied from class: SpillCostEstimator

Calculate the estimated cost for each register.

static boolean hasBadSizeMemoryOperand(Instruction s)

Does instruction s have a memory operand of an inconvenient size?

NOTE: This is pretty intel-specific. TODO Refactor to arch/ tree.