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Grow the map on entry so that we don't crash if joinIntervals never

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runs (if coalescing is disabled for example).

llvm-svn: 16259
This commit is contained in:
Alkis Evlogimenos 2004-09-09 19:24:38 +00:00
parent 81cba8dcd2
commit 4117e2a7a9
1 changed files with 1 additions and 2 deletions
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3
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -88,6 +88,7 @@ bool LiveIntervals::runOnMachineFunction(MachineFunction &fn) {
mri_ = tm_->getRegisterInfo();
lv_ = &getAnalysis<LiveVariables>();
allocatableRegs_ = mri_->getAllocatableSet(fn);
r2rMap_.grow(mf_->getSSARegMap()->getLastVirtReg());
// number MachineInstrs
unsigned miIndex = 0;
@ -619,8 +620,6 @@ namespace {
void LiveIntervals::joinIntervals() {
DEBUG(std::cerr << "********** JOINING INTERVALS ***********\n");
// reserve space for the reg2reg map
r2rMap_.grow(mf_->getSSARegMap()->getLastVirtReg());
const LoopInfo &LI = getAnalysis<LoopInfo>();
if (LI.begin() == LI.end()) {