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LiveRangeEdit: Check for completely empy subranges after removing ValNos.

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Completely empty subranges are not allowed and must be removed when
subreg liveness is enabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224804 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun 2014-12-24 02:11:46 +00:00
parent 94daeceeac
commit a2fd5b5fd0
1 changed files with 1 additions and 0 deletions
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lib/CodeGen/LiveRangeEdit.cpp
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@ -292,6 +292,7 @@ void LiveRangeEdit::eliminateDeadDef(MachineInstr *MI, ToShrinkSet &ToShrink) {
if (VNInfo *SVNI = S.getVNInfoAt(Idx))
S.removeValNo(SVNI);
}
LI.removeEmptySubRanges();
}
}
}