org.jikesrvm.compilers.opt.mir2mc.ia32
Class FinalMIRExpansion
java.lang.Object
org.jikesrvm.compilers.opt.ir.IRTools
org.jikesrvm.compilers.opt.mir2mc.ia32.FinalMIRExpansion
- Direct Known Subclasses:
- ArchitectureSpecificOpt.FinalMIRExpansion
public class FinalMIRExpansion
- extends IRTools
Final acts of MIR expansion for the IA32 architecture.
Things that are expanded here (immediately before final assembly)
should only be those sequences that cannot be expanded earlier
due to difficulty in keeping optimizations from interfering with them.
One job of this phase is to handle the expansion of the remains of
table switch. The code looks like a mess (which it is), but there
is little choice for relocatable IA32 code that does this. And the
details of this code are shared with the baseline compiler and
dependent in detail on the Assembler (see Assembler.emitOFFSET_Imm_ImmOrLabel(int, int, int)). If you want to mess with
it, you will probably need to mess with them as well.
| Methods inherited from class org.jikesrvm.compilers.opt.ir.IRTools |
A, AC, AC, CPOS, CR, D, DC, defDoublesAsUse, definedIn, F, FC, getCondMoveOp, getDefaultOperand, getLoadOp, getLoadOp, getMoveOp, getStoreOp, getStoreOp, I, IC, insertInstructionsAfter, L, LC, makeBlockOnEdge, mayBeVolatileFieldLoad, moveInstruction, moveIntoRegister, moveIntoRegister, nonPEIGC, TG, usedIn, useDoublesAsDef |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
FinalMIRExpansion
public FinalMIRExpansion()
expand
public static int expand(IR ir)
- Parameters:
ir - the IR to expand
- Returns:
- return value is garbage for IA32
expandFClear
private static void expandFClear(Instruction s,
IR ir)
- expand an FCLEAR pseudo-insruction using FFREEs.
- Parameters:
s - the instruction to expandir - the containing IR
expandFmov
private static void expandFmov(Instruction s,
PhysicalRegisterSet phys)
- expand an FMOV pseudo-insruction.
- Parameters:
s - the instruction to expandphys - controlling physical register set
expandYieldpoint
private static void expandYieldpoint(Instruction s,
IR ir,
RVMMethod meth,
IA32ConditionOperand ypCond)
expandUnconditionalYieldpoint
private static void expandUnconditionalYieldpoint(Instruction s,
IR ir,
RVMMethod meth)