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Use find_first/find_next to iterate through all the set bits in a
BitVector, instead of manually testing each bit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59246 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -399,14 +399,13 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb,
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// Iterate over all of the blocks that the variable is completely
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// live in, adding [insrtIndex(begin), instrIndex(end)+4) to the
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// live interval.
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for (unsigned i = 0, e = vi.AliveBlocks.size(); i != e; ++i) {
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if (vi.AliveBlocks[i]) {
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LiveRange LR(getMBBStartIdx(i),
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getMBBEndIdx(i)+1, // MBB ends at -1.
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ValNo);
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interval.addRange(LR);
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DOUT << " +" << LR;
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}
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for (int i = vi.AliveBlocks.find_first(); i != -1;
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i = vi.AliveBlocks.find_next(i)) {
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LiveRange LR(getMBBStartIdx(i),
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getMBBEndIdx(i)+1, // MBB ends at -1.
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ValNo);
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interval.addRange(LR);
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DOUT << " +" << LR;
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}
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// Finally, this virtual register is live from the start of any killing
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@ -52,11 +52,11 @@ void LiveVariables::getAnalysisUsage(AnalysisUsage &AU) const {
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void LiveVariables::VarInfo::dump() const {
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cerr << " Alive in blocks: ";
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for (unsigned i = 0, e = AliveBlocks.size(); i != e; ++i)
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if (AliveBlocks[i]) cerr << i << ", ";
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for (int i = AliveBlocks.find_first(); i != -1; i = AliveBlocks.find_next(i))
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cerr << i << ", ";
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cerr << " Used in blocks: ";
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for (unsigned i = 0, e = UsedBlocks.size(); i != e; ++i)
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if (UsedBlocks[i]) cerr << i << ", ";
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for (int i = UsedBlocks.find_first(); i != -1; i = UsedBlocks.find_next(i))
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cerr << i << ", ";
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cerr << "\n Killed by:";
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if (Kills.empty())
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cerr << " No instructions.\n";
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