Examples with RegisterSpecList com.android.dx.rop.code.RegisterSpecList used on opensource projects

Example 51 with RegisterSpecList

use of com.android.dx.rop.code.RegisterSpecList in project buck by facebook.

the class DeadCodeRemover method pruneDeadInstructions.

/**
     * Removes all instructions from every unreachable block.
     */
private void pruneDeadInstructions() {
    HashSet<SsaInsn> deletedInsns = new HashSet<SsaInsn>();
    ssaMeth.computeReachability();
    for (SsaBasicBlock block : ssaMeth.getBlocks()) {
        if (block.isReachable())
            continue;
        // Prune instructions from unreachable blocks
        for (int i = 0; i < block.getInsns().size(); i++) {
            SsaInsn insn = block.getInsns().get(i);
            RegisterSpecList sources = insn.getSources();
            int sourcesSize = sources.size();
            // Delete this instruction completely if it has sources
            if (sourcesSize != 0) {
                deletedInsns.add(insn);
            }
            // Delete this instruction from all usage lists.
            for (int j = 0; j < sourcesSize; j++) {
                RegisterSpec source = sources.get(j);
                useList[source.getReg()].remove(insn);
            }
            // Remove this instruction result from the sources of any phis
            RegisterSpec result = insn.getResult();
            if (result == null)
                continue;
            for (SsaInsn use : useList[result.getReg()]) {
                if (use instanceof PhiInsn) {
                    PhiInsn phiUse = (PhiInsn) use;
                    phiUse.removePhiRegister(result);
                }
            }
        }
    }
    ssaMeth.deleteInsns(deletedInsns);
}

Example 52 with RegisterSpecList

use of com.android.dx.rop.code.RegisterSpecList in project buck by facebook.

the class NormalSsaInsn method changeOneSource.

/**
     * Changes one of the insn's sources. New source should be of same type
     * and category.
     *
     * @param index {@code >=0;} index of source to change
     * @param newSpec spec for new source
     */
public final void changeOneSource(int index, RegisterSpec newSpec) {
    RegisterSpecList origSources = insn.getSources();
    int sz = origSources.size();
    RegisterSpecList newSources = new RegisterSpecList(sz);
    for (int i = 0; i < sz; i++) {
        newSources.set(i, i == index ? newSpec : origSources.get(i));
    }
    newSources.setImmutable();
    RegisterSpec origSpec = origSources.get(index);
    if (origSpec.getReg() != newSpec.getReg()) {
        /*
             * If the register remains unchanged, we're only changing
             * the type or local var name so don't update use list
             */
        getBlock().getParent().onSourceChanged(this, origSpec, newSpec);
    }
    insn = insn.withNewRegisters(getResult(), newSources);
}

Example 53 with RegisterSpecList

use of com.android.dx.rop.code.RegisterSpecList in project buck by facebook.

the class NormalSsaInsn method setNewSources.

/**
     * Changes the source list of the insn. New source list should be the
     * same size and consist of sources of identical types.
     *
     * @param newSources non-null new sources list.
     */
public final void setNewSources(RegisterSpecList newSources) {
    RegisterSpecList origSources = insn.getSources();
    if (origSources.size() != newSources.size()) {
        throw new RuntimeException("Sources counts don't match");
    }
    insn = insn.withNewRegisters(getResult(), newSources);
}

Example 54 with RegisterSpecList

use of com.android.dx.rop.code.RegisterSpecList in project buck by facebook.

the class NormalSsaInsn method mapSourceRegisters.

/** {@inheritDoc} */
@Override
public final void mapSourceRegisters(RegisterMapper mapper) {
    RegisterSpecList oldSources = insn.getSources();
    RegisterSpecList newSources = mapper.map(oldSources);
    if (newSources != oldSources) {
        insn = insn.withNewRegisters(getResult(), newSources);
        getBlock().getParent().onSourcesChanged(this, oldSources);
    }
}

Example 55 with RegisterSpecList

use of com.android.dx.rop.code.RegisterSpecList in project buck by facebook.

the class PhiInsn method getSources.

/**
     * Gets sources. Constructed lazily from phi operand data structures and
     * then cached.
     *
     * @return {@code non-null;} sources list
     */
@Override
public RegisterSpecList getSources() {
    if (sources != null) {
        return sources;
    }
    if (operands.size() == 0) {
        // How'd this happen? A phi insn with no operand?
        return RegisterSpecList.EMPTY;
    }
    int szSources = operands.size();
    sources = new RegisterSpecList(szSources);
    for (int i = 0; i < szSources; i++) {
        Operand o = operands.get(i);
        sources.set(i, o.regSpec);
    }
    sources.setImmutable();
    return sources;
}