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Convert VirtRegMap to a MachineFunctionPass.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66870 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2009-03-13 05:55:11 +00:00
parent cee56e7d33
commit 49c8aa0d8b
4 changed files with 63 additions and 28 deletions
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7
lib/CodeGen/RegAllocLinearScan.cpp
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@ -105,7 +105,7 @@ namespace {
greater_ptr<LiveInterval> > IntervalHeap;
IntervalHeap unhandled_;
std::auto_ptr<PhysRegTracker> prt_;
std::auto_ptr<VirtRegMap> vrm_;
VirtRegMap* vrm_;
std::auto_ptr<Spiller> spiller_;
public:
@ -126,6 +126,8 @@ namespace {
AU.addPreserved<LiveStacks>();
AU.addRequired<MachineLoopInfo>();
AU.addPreserved<MachineLoopInfo>();
AU.addRequired<VirtRegMap>();
AU.addPreserved<VirtRegMap>();
AU.addPreservedID(MachineDominatorsID);
MachineFunctionPass::getAnalysisUsage(AU);
}
@ -305,7 +307,7 @@ bool RALinScan::runOnMachineFunction(MachineFunction &fn) {
ComputeRelatedRegClasses();
if (!prt_.get()) prt_.reset(new PhysRegTracker(*tri_));
vrm_.reset(new VirtRegMap(*mf_));
vrm_ = &getAnalysis<VirtRegMap>();
if (!spiller_.get()) spiller_.reset(createSpiller());
initIntervalSets();
@ -314,7 +316,6 @@ bool RALinScan::runOnMachineFunction(MachineFunction &fn) {
// Rewrite spill code and update the PhysRegsUsed set.
spiller_->runOnMachineFunction(*mf_, *vrm_);
vrm_.reset(); // Free the VirtRegMap
assert(unhandled_.empty() && "Unhandled live intervals remain!");
fixed_.clear();