Fix a bug where a def use operand isn't being detected as a sub-register use.
llvm-svn: 43763
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2dbffa4e76
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92d23e5204
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@ -19,7 +19,6 @@
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#include "llvm/CodeGen/LiveIntervalAnalysis.h"
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#include "llvm/CodeGen/LiveIntervalAnalysis.h"
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#include "VirtRegMap.h"
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#include "VirtRegMap.h"
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#include "llvm/Value.h"
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#include "llvm/Value.h"
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#include "llvm/Analysis/LoopInfo.h"
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#include "llvm/CodeGen/LiveVariables.h"
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#include "llvm/CodeGen/LiveVariables.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineInstr.h"
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@ -57,7 +56,6 @@ void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addPreservedID(PHIEliminationID);
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AU.addPreservedID(PHIEliminationID);
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AU.addRequiredID(PHIEliminationID);
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AU.addRequiredID(PHIEliminationID);
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AU.addRequiredID(TwoAddressInstructionPassID);
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AU.addRequiredID(TwoAddressInstructionPassID);
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AU.addRequired<LoopInfo>();
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MachineFunctionPass::getAnalysisUsage(AU);
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MachineFunctionPass::getAnalysisUsage(AU);
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}
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}
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@ -378,8 +376,13 @@ addIntervalsForSpills(const LiveInterval &li, VirtRegMap &vrm, unsigned reg) {
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bool HasUse = mop.isUse();
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bool HasUse = mop.isUse();
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bool HasDef = mop.isDef();
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bool HasDef = mop.isDef();
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for (unsigned j = i+1, e = MI->getNumOperands(); j != e; ++j) {
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for (unsigned j = i+1, e = MI->getNumOperands(); j != e; ++j) {
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if (MI->getOperand(j).isRegister() &&
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if (!MI->getOperand(j).isRegister())
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MI->getOperand(j).getReg() == li.reg) {
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continue;
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unsigned RegJ = MI->getOperand(j).getReg();
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if (RegJ != 0 && MRegisterInfo::isVirtualRegister(RegJ) &&
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RegMap->isSubRegister(RegJ))
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RegJ = RegMap->getSuperRegister(RegJ);
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if (RegJ == li.reg) {
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MI->getOperand(j).setReg(NewVReg);
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MI->getOperand(j).setReg(NewVReg);
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HasUse |= MI->getOperand(j).isUse();
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HasUse |= MI->getOperand(j).isUse();
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HasDef |= MI->getOperand(j).isDef();
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HasDef |= MI->getOperand(j).isDef();
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