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author | Mark Lacey <mark.lacey@apple.com> | 2013-08-14 23:50:09 +0000 |
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committer | Mark Lacey <mark.lacey@apple.com> | 2013-08-14 23:50:09 +0000 |
commit | 03fe68e0a9c0fdd196f62899cb44b6f9a56dd7c8 (patch) | |
tree | ad445ad6a2275fcdaf877e9a5f3f16e972d330b7 /lib/CodeGen/LiveRangeEdit.cpp | |
parent | 1feb5854aeeda897e9318c8193d187673c8576b8 (diff) | |
download | llvm-03fe68e0a9c0fdd196f62899cb44b6f9a56dd7c8.tar.gz llvm-03fe68e0a9c0fdd196f62899cb44b6f9a56dd7c8.tar.bz2 llvm-03fe68e0a9c0fdd196f62899cb44b6f9a56dd7c8.tar.xz |
Notify LiveRangeEdit of new virtual registers.
Add a delegate class to MachineRegisterInfo with a single virtual
function, MRI_NoteNewVirtualRegister(). Update LiveRangeEdit to inherit
from this delegate class and override the definition of the callback
with an implementation that tracks the newly created virtual registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188435 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveRangeEdit.cpp')
-rw-r--r-- | lib/CodeGen/LiveRangeEdit.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/lib/CodeGen/LiveRangeEdit.cpp b/lib/CodeGen/LiveRangeEdit.cpp index 4e6c4c705d..04f92adefd 100644 --- a/lib/CodeGen/LiveRangeEdit.cpp +++ b/lib/CodeGen/LiveRangeEdit.cpp @@ -33,11 +33,9 @@ void LiveRangeEdit::Delegate::anchor() { } LiveInterval &LiveRangeEdit::createFrom(unsigned OldReg) { unsigned VReg = MRI.createVirtualRegister(MRI.getRegClass(OldReg)); if (VRM) { - VRM->grow(); VRM->setIsSplitFromReg(VReg, VRM->getOriginal(OldReg)); } LiveInterval &LI = LIS.getOrCreateInterval(VReg); - NewRegs.push_back(VReg); return LI; } @@ -387,6 +385,17 @@ void LiveRangeEdit::eliminateDeadDefs(SmallVectorImpl<MachineInstr*> &Dead, } } +// Keep track of new virtual registers created via +// MachineRegisterInfo::createVirtualRegister. +void +LiveRangeEdit::MRI_NoteNewVirtualRegister(unsigned VReg) +{ + if (VRM) + VRM->grow(); + + NewRegs.push_back(VReg); +} + void LiveRangeEdit::calculateRegClassAndHint(MachineFunction &MF, const MachineLoopInfo &Loops, |