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Changed the liveness tracking in the RegisterScavenger

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to use register units instead of registers.

reviewed by Jakob Stoklund Olesen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214798 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pedro Artigas
2014-08-04 23:07:49 +00:00
parent db3ce56a58
commit 3da024594f
8 changed files with 116 additions and 114 deletions
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6
lib/CodeGen/BranchFolding.cpp
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@ -389,10 +389,8 @@ void BranchFolder::MaintainLiveIns(MachineBasicBlock *CurMBB,
RS->enterBasicBlock(CurMBB);
if (!CurMBB->empty())
RS->forward(std::prev(CurMBB->end()));
BitVector RegsLiveAtExit(TRI->getNumRegs());
RS->getRegsUsed(RegsLiveAtExit, false);
for (unsigned int i = 0, e = TRI->getNumRegs(); i != e; i++)
if (RegsLiveAtExit[i])
for (unsigned int i = 1, e = TRI->getNumRegs(); i != e; i++)
if (RS->isRegUsed(i, false))
NewMBB->addLiveIn(i);
}
}