Examples with ControlFlowGraph org.jikesrvm.compilers.opt.ir.ControlFlowGraph used on opensource projects

Example 6 with ControlFlowGraph

use of org.jikesrvm.compilers.opt.ir.ControlFlowGraph in project JikesRVM by JikesRVM.

the class CompoundIntervalTest method addRangeCreatesNewIntervalWhenThereIsAGapBetweenRanges.

@Test
public void addRangeCreatesNewIntervalWhenThereIsAGapBetweenRanges() {
    Register reg = new Register(3);
    CompoundInterval ci = new CompoundInterval(DEFAULT_BEGIN, DEFAULT_END, reg);
    assertThat(ci.last().getEnd(), is(DEFAULT_END));
    RegisterAllocatorState regAllocState = new RegisterAllocatorState(1);
    LiveIntervalElement live = new LiveIntervalElement(reg, null, null);
    ControlFlowGraph emptyCfg = new ControlFlowGraph(0);
    BasicBlock bb = new BasicBlock(1, null, emptyCfg);
    regAllocState.initializeDepthFirstNumbering(10);
    regAllocState.setDFN(bb.firstInstruction(), DEFAULT_END + 2);
    regAllocState.setDFN(bb.lastInstruction(), DEFAULT_END + 3);
    BasicInterval bi = ci.addRange(regAllocState, live, bb);
    assertThat(ci.last(), sameInstance(bi));
}

Example 7 with ControlFlowGraph

use of org.jikesrvm.compilers.opt.ir.ControlFlowGraph in project JikesRVM by JikesRVM.

the class CompoundIntervalTest method addRangeChangesEndOfLastIntervalWhenRangesDirectlyFollowEachOther_NoDefUse.

@Test
public void addRangeChangesEndOfLastIntervalWhenRangesDirectlyFollowEachOther_NoDefUse() {
    Register reg = new Register(3);
    CompoundInterval ci = new CompoundInterval(DEFAULT_BEGIN, DEFAULT_END, reg);
    assertThat(ci.last().getEnd(), is(DEFAULT_END));
    RegisterAllocatorState regAllocState = new RegisterAllocatorState(1);
    LiveIntervalElement live = new LiveIntervalElement(reg, null, null);
    ControlFlowGraph emptyCfg = new ControlFlowGraph(0);
    BasicBlock bb = new BasicBlock(1, null, emptyCfg);
    regAllocState.initializeDepthFirstNumbering(10);
    regAllocState.setDFN(bb.firstInstruction(), DEFAULT_END);
    regAllocState.setDFN(bb.lastInstruction(), DEFAULT_END + 1);
    BasicInterval bi = ci.addRange(regAllocState, live, bb);
    assertNull(bi);
    assertThat(ci.last().getEnd(), is(DEFAULT_END + 1));
}

Example 8 with ControlFlowGraph

use of org.jikesrvm.compilers.opt.ir.ControlFlowGraph in project JikesRVM by JikesRVM.

the class TestingTools method addEmptyCFGToIR.

public static void addEmptyCFGToIR(IR ir) {
    ir.cfg = new ControlFlowGraph(0);
    BasicBlock prologue = new BasicBlock(PROLOGUE_BLOCK_BCI, null, ir.cfg);
    BasicBlock epilogue = new BasicBlock(EPILOGUE_BLOCK_BCI, null, ir.cfg);
    ir.cfg.addLastInCodeOrder(prologue);
    ir.cfg.addLastInCodeOrder(epilogue);
    BasicBlock exit = ir.cfg.exit();
    epilogue.insertOut(exit);
}