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

Example 11 with RegisterSpec

use of com.taobao.android.dx.rop.code.RegisterSpec in project atlas by alibaba.

the class Form35c method explicitize.

/**
     * Returns a register list which is equivalent to the given one,
     * except that it splits category-2 registers into two explicit
     * entries. This returns the original list if no modification is
     * required
     *
     * @param orig {@code non-null;} the original list
     * @return {@code non-null;} the list with the described transformation
     */
private static RegisterSpecList explicitize(RegisterSpecList orig) {
    int wordCount = wordCount(orig);
    int sz = orig.size();
    if (wordCount == sz) {
        return orig;
    }
    RegisterSpecList result = new RegisterSpecList(wordCount);
    int wordAt = 0;
    for (int i = 0; i < sz; i++) {
        RegisterSpec one = orig.get(i);
        result.set(wordAt, one);
        if (one.getCategory() == 2) {
            result.set(wordAt + 1, RegisterSpec.make(one.getReg() + 1, Type.VOID));
            wordAt += 2;
        } else {
            wordAt++;
        }
    }
    result.setImmutable();
    return result;
}

Example 12 with RegisterSpec

use of com.taobao.android.dx.rop.code.RegisterSpec in project atlas by alibaba.

the class Form35c method wordCount.

/**
     * Gets the number of words required for the given register list, where
     * category-2 values count as two words. Return {@code -1} if the
     * list requires more than five words or contains registers that need
     * more than a nibble to identify them.
     *
     * @param regs {@code non-null;} the register list in question
     * @return {@code >= -1;} the number of words required, or {@code -1}
     * if the list couldn't possibly fit in this format
     */
private static int wordCount(RegisterSpecList regs) {
    int sz = regs.size();
    if (sz > MAX_NUM_OPS) {
        // It can't possibly fit.
        return -1;
    }
    int result = 0;
    for (int i = 0; i < sz; i++) {
        RegisterSpec one = regs.get(i);
        result += one.getCategory();
        /*
             * The check below adds (category - 1) to the register, to
             * account for the fact that the second half of a
             * category-2 register has to be represented explicitly in
             * the result.
             */
        if (!unsignedFitsInNibble(one.getReg() + one.getCategory() - 1)) {
            return -1;
        }
    }
    return (result <= MAX_NUM_OPS) ? result : -1;
}

Example 13 with RegisterSpec

use of com.taobao.android.dx.rop.code.RegisterSpec in project atlas by alibaba.

the class Form35c method compatibleRegs.

/** {@inheritDoc} */
@Override
public BitSet compatibleRegs(DalvInsn insn) {
    RegisterSpecList regs = insn.getRegisters();
    int sz = regs.size();
    BitSet bits = new BitSet(sz);
    for (int i = 0; i < sz; i++) {
        RegisterSpec reg = regs.get(i);
        /*
             * The check below adds (category - 1) to the register, to
             * account for the fact that the second half of a
             * category-2 register has to be represented explicitly in
             * the result.
             */
        bits.set(i, unsignedFitsInNibble(reg.getReg() + reg.getCategory() - 1));
    }
    return bits;
}

Example 14 with RegisterSpec

use of com.taobao.android.dx.rop.code.RegisterSpec in project atlas by alibaba.

the class SsaMethod method updateOneDefinition.

/**
     * Updates a single definition.
     *
     * @param insn {@code non-null;} insn who's result should be recorded as
     * a definition
     * @param oldResult {@code null-ok;} a previous result that should
     * be no longer considered a definition by this insn
     */
/*package*/
void updateOneDefinition(SsaInsn insn, RegisterSpec oldResult) {
    if (definitionList == null)
        return;
    if (oldResult != null) {
        int reg = oldResult.getReg();
        definitionList[reg] = null;
    }
    RegisterSpec resultReg = insn.getResult();
    if (resultReg != null) {
        int reg = resultReg.getReg();
        if (definitionList[reg] != null) {
            throw new RuntimeException("Duplicate add of insn");
        } else {
            definitionList[resultReg.getReg()] = insn;
        }
    }
}

Example 15 with RegisterSpec

use of com.taobao.android.dx.rop.code.RegisterSpec in project atlas by alibaba.

the class FirstFitLocalCombiningAllocator method handleUnassociatedParameters.

/**
     * Maps any parameter that isn't local-associated, which can happen
     * in the case where there is no java debug info.
     */
private void handleUnassociatedParameters() {
    int szSsaRegs = ssaMeth.getRegCount();
    for (int ssaReg = 0; ssaReg < szSsaRegs; ssaReg++) {
        if (ssaRegsMapped.get(ssaReg)) {
            // We already did this one above
            continue;
        }
        int paramIndex = getParameterIndexForReg(ssaReg);
        RegisterSpec ssaSpec = getDefinitionSpecForSsaReg(ssaReg);
        if (paramIndex >= 0) {
            addMapping(ssaSpec, paramIndex);
        }
    }
}