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LiveRangeEdit: Check for completely empy subranges after removing ValNos.
author
Matthias Braun
<matze@braunis.de>
Wed, 24 Dec 2014 02:11:46 +0000
(
02:11
+0000)
committer
Matthias Braun
<matze@braunis.de>
Wed, 24 Dec 2014 02:11:46 +0000
(
02:11
+0000)
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
lib/CodeGen/LiveRangeEdit.cpp
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diff --git
a/lib/CodeGen/LiveRangeEdit.cpp
b/lib/CodeGen/LiveRangeEdit.cpp
index 765a39a9b5eafd5446873c63b583d13ff09b2252..47da205df6942f97bbf22427f37ef3e5015213da 100644
(file)
--- a/
lib/CodeGen/LiveRangeEdit.cpp
+++ b/
lib/CodeGen/LiveRangeEdit.cpp
@@
-292,6
+292,7
@@
void LiveRangeEdit::eliminateDeadDef(MachineInstr *MI, ToShrinkSet &ToShrink) {
if (VNInfo *SVNI = S.getVNInfoAt(Idx))
S.removeValNo(SVNI);
}
+ LI.removeEmptySubRanges();
}
}
}