[llvm-commits] [llvm] r52012 - in /llvm/trunk: include/llvm/CodeGen/LiveIntervalAnalysis.h lib/CodeGen/LiveIntervalAnalysis.cpp
Owen Anderson
resistor at mac.com
Thu Jun 5 10:15:43 PDT 2008
Author: resistor
Date: Thu Jun 5 12:15:43 2008
New Revision: 52012
URL: http://llvm.org/viewvc/llvm-project?rev=52012&view=rev
Log:
Add a helper for constructing new live ranges that ended from an instruction to the end of its MBB.
Modified:
llvm/trunk/include/llvm/CodeGen/LiveIntervalAnalysis.h
llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp
Modified: llvm/trunk/include/llvm/CodeGen/LiveIntervalAnalysis.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/LiveIntervalAnalysis.h?rev=52012&r1=52011&r2=52012&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/LiveIntervalAnalysis.h (original)
+++ llvm/trunk/include/llvm/CodeGen/LiveIntervalAnalysis.h Thu Jun 5 12:15:43 2008
@@ -220,6 +220,11 @@
I = r2iMap_.insert(I, std::make_pair(reg, createInterval(reg)));
return I->second;
}
+
+ /// addLiveRangeToEndOfBlock - Given a register and an instruction,
+ /// adds a live range from that instruction to the end of its MBB.
+ LiveRange addLiveRangeToEndOfBlock(unsigned reg,
+ MachineInstr* startInst);
// Interval removal
Modified: llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp?rev=52012&r1=52011&r2=52012&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp (original)
+++ llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp Thu Jun 5 12:15:43 2008
@@ -1830,3 +1830,18 @@
}
}
}
+
+LiveRange LiveIntervals::addLiveRangeToEndOfBlock(unsigned reg,
+ MachineInstr* startInst) {
+ LiveInterval& Interval = getOrCreateInterval(reg);
+ VNInfo* VN = Interval.getNextValue(
+ getInstructionIndex(startInst) + InstrSlots::DEF,
+ startInst, getVNInfoAllocator());
+ VN->hasPHIKill = true;
+ VN->kills.push_back(getMBBEndIdx(startInst->getParent()));
+ LiveRange LR(getInstructionIndex(startInst) + InstrSlots::DEF,
+ getMBBEndIdx(startInst->getParent()) + 1, VN);
+ Interval.addRange(LR);
+
+ return LR;
+}
More information about the llvm-commits
mailing list