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C++ Assembler::SubCCR方法代码示例

本文整理汇总了C++中Assembler::SubCCR方法的典型用法代码示例。如果您正苦于以下问题:C++ Assembler::SubCCR方法的具体用法?C++ Assembler::SubCCR怎么用?C++ Assembler::SubCCR使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Assembler的用法示例。


在下文中一共展示了Assembler::SubCCR方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: gen

 void AbstractArrayAtNode::gen() {
   BasicNode::gen();
   Label* argFail = NULL;          // if arg isn't a smi
   Label* indexFail = NULL;        // if arg is out of bounds
   Assembler* a = theAssembler;
   Location arr = genHelper->moveToReg(_src, Temp2);
   Location index = genHelper->moveToReg(arg, Temp1);
   Location size = Temp3;
   // load array size now (avoids load interlock for range check)
   a->LoadI(arr, sizeOffset, size);  
   if (!intArg) {
     // CP may have propagated a constant into arg
     intArg = arg->isConstPReg() && ((ConstPReg*)arg)->constant->is_smi();
   }
   if (!intArg) {
     // test arg for smiOop
     if (SICCountTypeTests) {
       a->startTypeTest(1, false, true);
       a->doOneTypeTest();
     }
     if (SICCountIntTagTests) a->markTagTest(1);
     a->AndCCI(index, Tag_Mask, G0);
     argFail = argFail->unify(a->BneForward(false));
     if (SICCountTypeTests) a->endTypeTest();
   }
   argFail = argFail->unify(testArg2());
   a->SubCCR(index, size, G0);
   indexFail = a->BgeuForward(false);
   Location res = isRegister(_dest->loc) ? _dest->loc : Temp1;
   bool needDestStore = genAccess(arr, index, res);
   if (needDestStore && !isRegister(_dest->loc)) {
     genHelper->moveRegToLoc(res, _dest->loc);
   }
   Label* done = a->BraForward(true);
   MergeNode* failMerge = (MergeNode*)next1();
   if (argFail) {
     argFail->define();
     if (error) {
       Location err = isRegister(error->loc) ? error->loc : Temp1;
       genHelper->loadImmediateOop(VMString[BADTYPEERROR], err);
       if (err != error->loc) genHelper->moveRegToLoc(err, error->loc);
     }
     if (failMerge) // test added by dmu 4/27/96
       failMerge->l = failMerge->l->unify(a->BraForward(true));
   }
   indexFail->define();
   if (error) {
     Location err = isRegister(error->loc) ? error->loc : Temp1;
     genHelper->loadImmediateOop(VMString[BADINDEXERROR], err);
     if (err != error->loc) genHelper->moveRegToLoc(err, error->loc);
   }
   if (failMerge) // test added by dmu 4/27/96
     failMerge->l = failMerge->l->unify(a->BraForward(true));
   done->define();
 }
开发者ID:ardeujho,项目名称:self,代码行数:55,代码来源:node_sparc.cpp

示例2: initComparing

void CountCodePattern::initComparing() {
    instsSize = 13 * 4;
    // 0: sethi count_addr, Temp1
    // 1: ld    [Temp1+lo(count_addr)], Temp2
    // 2: setHi limit, Temp1
    // 3: inc   Temp2
    // 4: cmp   Temp2, Temp1
    // 5: sethi count_addr, Temp1
    // 6: st    Temp2, [Temp1+lo(count_addr)]
    // 7: beq   10
    // 8: sethi jump_addr, Temp1
    // 9: jmpl   Temp1 + low(jump_addr), g0
    //10: sethi recompile_addr, Temp2
    //11: jmpl   Temp2 + low(recompile_addr), linkReg
    //12: nop
    countAddr_offset = 0;
    countAddr_offset2 = 5;
    ld_offset = 1;
    st_offset = 6;
    nm_sethi_offset = 8;
    nm_jmp_offset = 9;
    limit_sethi_offset = 2;
    recompile_offset = 10;

    Assembler* a = new Assembler(instsSize, instsSize, false, true);
    a->SetHiA(0, Temp1);
    a->LoadI(Temp1, 0, Temp2);
    a->SetHiA(0, Temp1);
    a->AddI(Temp2, 1, Temp2);
    a->SubCCR(Temp2, Temp1, G0);
    a->SetHiA(0, Temp1);
    a->StoreI(Temp1, 0, Temp2);
    Label* l = a->BgeForward(false);
    a->SetHiX(0, CodeAddressOperand, Temp1);
    a->JmpLC(Temp1, 0, G0);
    l->define();
    a->SetHiP(Memory->code->trapdoors->Recompile_stub_td(), Temp2);
    a->JmpLP(Temp2, Memory->code->trapdoors->Recompile_stub_td(), RecompileLinkReg);
    a->Nop();
    pattern = (pc_t)AllocateHeap(instsSize, "countStub pattern");
    copy_words((int32*)a->instsStart, (int32*)pattern, instsSize / 4);
    a->finalize();
}
开发者ID:doublec,项目名称:self,代码行数:43,代码来源:countPattern_sparc.cpp

示例3: checkRecompilation

  void SICGenHelper::checkRecompilation(fint countID) {
    // test for recompilation
    //   sethi &counter, t3
    //   load  [t3 + lo%(&counter)], t4
    //   add t4, 1, t4
    //   cmp t4, recompileLimit
    //   bne ok
    //   store t4, [t3 + lo%(&counter)]
    //   <jumpTo recompiler>
    //   nop
    // ok:

    // di recompilation doesn't work right now - see recompile.c
    if (theSIC->diLink) return;
    Assembler* ass = theAssembler;

    ass->Comment("test for recompilation");
    void* counter = &useCount[countID];
    ass->SetHiA(counter, Temp3);
    ass->LoadA(Temp3, counter, Temp2);
    ass->AddI(Temp2, 1, Temp2);
    fint limit = recompileLimit(0);
    if (limit < maxImmediate) {
      ass->SubCCI(Temp2, limit, G0);
    } else {
      ass->SetHiI2(limit, Temp1);           // limit is multiple of 1024
      ass->SubCCR(Temp2, Temp1, G0);
    }
    Label* ok = ass->BneForward(false);
    // call recompiler
    void* fnaddr = first_inst_addr(
                     theSIC->diLink ? Memory->zone->DIRecompile_stub_td()
                                    : Memory->zone->  Recompile_stub_td() );
    Location linkReg = theSIC->diLink ? DIRecompileLinkReg : RecompileLinkReg;
    jumpTo(fnaddr, linkReg, linkReg);
    // The store below is always executed so that we will call the recompiler 
    // exactly once (even if it cannot recompile for some reason).
    ok->define();
    assert(Temp3 != linkReg, "counter addr reg will be trashed by jump");
    ass->StoreA(Temp3, counter, Temp2);
  }
开发者ID:AaronNGray,项目名称:self,代码行数:41,代码来源:genHelper_sparc.cpp


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