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Some clean up.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43043 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-10-16 21:09:14 +00:00
parent 49b653aa6a
commit 11923cc05e
1 changed files with 10 additions and 19 deletions
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29
lib/CodeGen/RegAllocLinearScan.cpp
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@ -44,9 +44,6 @@ linearscanRegAlloc("linearscan", " linear scan register allocator",
createLinearScanRegisterAllocator);
namespace {
static unsigned numIterations = 0;
static unsigned numIntervals = 0;
struct VISIBILITY_HIDDEN RALinScan : public MachineFunctionPass {
static char ID;
RALinScan() : MachineFunctionPass((intptr_t)&ID) {}
@ -249,16 +246,13 @@ void RALinScan::linearScan()
DOUT << "********** LINEAR SCAN **********\n";
DOUT << "********** Function: " << mf_->getFunction()->getName() << '\n';
// DEBUG(printIntervals("unhandled", unhandled_.begin(), unhandled_.end()));
DEBUG(printIntervals("fixed", fixed_.begin(), fixed_.end()));
DEBUG(printIntervals("active", active_.begin(), active_.end()));
DEBUG(printIntervals("inactive", inactive_.begin(), inactive_.end()));
while (!unhandled_.empty()) {
// pick the interval with the earliest start point
LiveInterval* cur = unhandled_.top();
unhandled_.pop();
++numIterations;
++NumIters;
DOUT << "\n*** CURRENT ***: " << *cur << '\n';
processActiveIntervals(cur->beginNumber());
@ -275,27 +269,24 @@ void RALinScan::linearScan()
DEBUG(printIntervals("active", active_.begin(), active_.end()));
DEBUG(printIntervals("inactive", inactive_.begin(), inactive_.end()));
}
numIntervals += li_->getNumIntervals();
NumIters += numIterations;
// expire any remaining active intervals
for (IntervalPtrs::reverse_iterator
i = active_.rbegin(); i != active_.rend(); ) {
unsigned reg = i->first->reg;
DOUT << "\tinterval " << *i->first << " expired\n";
while (!active_.empty()) {
IntervalPtr &IP = active_.back();
unsigned reg = IP.first->reg;
DOUT << "\tinterval " << *IP.first << " expired\n";
assert(MRegisterInfo::isVirtualRegister(reg) &&
"Can only allocate virtual registers!");
reg = vrm_->getPhys(reg);
prt_->delRegUse(reg);
i = IntervalPtrs::reverse_iterator(active_.erase(i.base()-1));
active_.pop_back();
}
// expire any remaining inactive intervals
for (IntervalPtrs::reverse_iterator
i = inactive_.rbegin(); i != inactive_.rend(); ) {
DOUT << "\tinterval " << *i->first << " expired\n";
i = IntervalPtrs::reverse_iterator(inactive_.erase(i.base()-1));
}
DEBUG(for (IntervalPtrs::reverse_iterator
i = inactive_.rbegin(); i != inactive_.rend(); )
DOUT << "\tinterval " << *i->first << " expired\n");
inactive_.clear();
// A brute force way of adding live-ins to every BB.
MachineFunction::iterator MBB = mf_->begin();