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Improve style.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73258 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -66,21 +66,21 @@ bool LazyLiveness::runOnMachineFunction(MachineFunction &mf) {
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// Step 0: Compute preorder numbering for all MBBs.
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unsigned num = 0;
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for (df_iterator<MachineDomTreeNode*> DI = df_begin(MDT.getRootNode());
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DI != df_end(MDT.getRootNode()); ++DI) {
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for (df_iterator<MachineDomTreeNode*> DI = df_begin(MDT.getRootNode()),
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DE = df_end(MDT.getRootNode()); DI != DE; ++DI) {
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preorder[(*DI)->getBlock()] = num++;
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rev_preorder.push_back((*DI)->getBlock());
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}
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// Step 1: Compute the transitive closure of the CFG, ignoring backedges.
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for (po_iterator<MachineBasicBlock*> POI = po_begin(&*mf.begin());
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POI != po_end(&*mf.begin()); ++POI) {
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for (po_iterator<MachineBasicBlock*> POI = po_begin(&*mf.begin()),
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POE = po_end(&*mf.begin()); POI != POE; ++POI) {
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MachineBasicBlock* MBB = *POI;
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SparseBitVector<128>& entry = rv[MBB];
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entry.set(preorder[MBB]);
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for (MachineBasicBlock::succ_iterator SI = MBB->succ_begin();
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SI != MBB->succ_end(); ++SI) {
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for (MachineBasicBlock::succ_iterator SI = MBB->succ_begin(),
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SE = MBB->succ_end(); SI != SE; ++SI) {
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DenseMap<MachineBasicBlock*, SparseBitVector<128> >::iterator SII =
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rv.find(*SI);
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@ -103,8 +103,8 @@ bool LazyLiveness::runOnMachineFunction(MachineFunction &mf) {
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for (po_iterator<MachineBasicBlock*> POI = po_begin(&*mf.begin()),
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POE = po_end(&*mf.begin()); POI != POE; ++POI)
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if (!backedge_target.test(preorder[*POI]))
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for (MachineBasicBlock::succ_iterator SI = (*POI)->succ_begin();
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SI != (*POI)->succ_end(); ++SI)
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for (MachineBasicBlock::succ_iterator SI = (*POI)->succ_begin(),
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SE = (*POI)->succ_end(); SI != SE; ++SI)
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if (!backedges.count(std::make_pair(*POI, *SI)) && tv.count(*SI)) {
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SparseBitVector<128>& PBV = tv[*POI];
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PBV = tv[*SI];
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@ -123,11 +123,12 @@ bool LazyLiveness::vregLiveIntoMBB(unsigned vreg, MachineBasicBlock* MBB) {
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MachineBasicBlock* DefMBB = MRI->def_begin(vreg)->getParent();
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unsigned def = preorder[DefMBB];
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unsigned max_dom = 0;
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for (df_iterator<MachineDomTreeNode*> DI = df_begin(MDT[DefMBB]);
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DI != df_end(MDT[DefMBB]); ++DI)
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for (df_iterator<MachineDomTreeNode*> DI = df_begin(MDT[DefMBB]),
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DE = df_end(MDT[DefMBB]); DI != DE; ++DI) {
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if (preorder[DI->getBlock()] > max_dom) {
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max_dom = preorder[(*DI)->getBlock()];
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}
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}
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if (preorder[MBB] <= def || max_dom < preorder[MBB])
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return false;
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@ -135,16 +136,16 @@ bool LazyLiveness::vregLiveIntoMBB(unsigned vreg, MachineBasicBlock* MBB) {
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SparseBitVector<128>::iterator I = tv[MBB].begin();
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while (I != tv[MBB].end() && *I <= def) ++I;
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while (I != tv[MBB].end() && *I < max_dom) {
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for (MachineRegisterInfo::use_iterator UI = MRI->use_begin(vreg);
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UI != MachineRegisterInfo::use_end(); ++UI) {
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for (MachineRegisterInfo::use_iterator UI = MRI->use_begin(vreg),
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UE = MachineRegisterInfo::use_end(); UI != UE; ++UI) {
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MachineBasicBlock* UseMBB = UI->getParent();
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if (rv[rev_preorder[*I]].test(preorder[UseMBB]))
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return true;
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unsigned t_dom = 0;
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for (df_iterator<MachineDomTreeNode*> DI =
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df_begin(MDT[rev_preorder[*I]]);
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DI != df_end(MDT[rev_preorder[*I]]); ++DI)
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df_begin(MDT[rev_preorder[*I]]), DE = df_end(MDT[rev_preorder[*I]]);
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DI != DE; ++DI)
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if (preorder[DI->getBlock()] > t_dom) {
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max_dom = preorder[(*DI)->getBlock()];
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}
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@ -155,4 +156,3 @@ bool LazyLiveness::vregLiveIntoMBB(unsigned vreg, MachineBasicBlock* MBB) {
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return false;
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}
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