Let callers decide the sub-register index on the def operand of rematerialized instructions.
Avoid remat'ing instructions whose def have sub-register indices for now. It's just really really hard to get all the cases right.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75900 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp
index c49575b..580a6d1 100644
--- a/lib/CodeGen/PreAllocSplitting.cpp
+++ b/lib/CodeGen/PreAllocSplitting.cpp
@@ -867,7 +867,7 @@
NumRenumbers++;
}
-bool PreAllocSplitting::Rematerialize(unsigned vreg, VNInfo* ValNo,
+bool PreAllocSplitting::Rematerialize(unsigned VReg, VNInfo* ValNo,
MachineInstr* DefMI,
MachineBasicBlock::iterator RestorePt,
unsigned RestoreIdx,
@@ -884,7 +884,7 @@
if (KillPt == DefMI->getParent()->end())
return false;
- TII->reMaterialize(MBB, RestorePt, vreg, DefMI);
+ TII->reMaterialize(MBB, RestorePt, VReg, 0, DefMI);
LIs->InsertMachineInstrInMaps(prior(RestorePt), RestoreIdx);
ReconstructLiveInterval(CurrLI);