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Spill explicit physical register defs as well.

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llvm-svn: 12260
This commit is contained in:
Alkis Evlogimenos 2004-03-09 08:35:13 +00:00
parent dcb019838b
commit 0e0433a791
1 changed files with 11 additions and 3 deletions
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14
lib/CodeGen/VirtRegMap.cpp
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@ -283,8 +283,8 @@ namespace {
// the value of the spilled virtual register
VirtRegMap::MI2VirtMap::const_iterator i, e;
for (tie(i, e) = vrm_->getFoldedVirts(mii); i != e; ++i) {
unsigned physReg = vrm_->getPhys(i->second);
if (physReg) vacateJustPhysReg(mbb, mii, physReg);
if (vrm_->hasPhys(i->second))
vacateJustPhysReg(mbb, mii, vrm_->getPhys(i->second));
}
// rewrite all used operands
@ -304,11 +304,19 @@ namespace {
}
}
// spill implicit defs
// spill implicit physical register defs
const TargetInstrDescriptor& tid = tii_->get(mii->getOpcode());
for (const unsigned* id = tid.ImplicitDefs; *id; ++id)
vacatePhysReg(mbb, mii, *id);
// spill explicit physical register defs
for (unsigned i = 0, e = mii->getNumOperands(); i != e; ++i) {
MachineOperand& op = mii->getOperand(i);
if (op.isRegister() && op.getReg() && !op.isUse() &&
MRegisterInfo::isPhysicalRegister(op.getReg()))
vacatePhysReg(mbb, mii, op.getReg());
}
// rewrite def operands (def&use was handled with the
// uses so don't check for those here)
for (unsigned i = 0, e = mii->getNumOperands(); i != e; ++i) {