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[RDF] Correctly enumerate reg units for reg masks 

llvm-svn: 300368
This commit is contained in:
Krzysztof Parzyszek 2017-04-14 21:17:36 +00:00
parent fb502d2f5e
commit fabb68fc06
1 changed files with 5 additions and 3 deletions
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8
llvm/lib/Target/Hexagon/RDFRegisters.cpp
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@ -246,13 +246,15 @@ bool RegisterAggr::hasCoverOf(RegisterRef RR) const {
RegisterAggr &RegisterAggr::insert(RegisterRef RR) {
if (PhysicalRegisterInfo::isRegMaskId(RR.Reg)) {
// XXX SLOW
BitVector PU(PRI.getTRI().getNumRegUnits()); // Preserved units.
const uint32_t *MB = PRI.getRegMaskBits(RR.Reg);
for (unsigned i = 1, e = PRI.getTRI().getNumRegs(); i != e; ++i) {
if (MB[i/32] & (1u << (i%32)))
if (!(MB[i/32] & (1u << (i%32))))
continue;
insert(RegisterRef(i, LaneBitmask::getAll()));
for (MCRegUnitIterator U(i, &PRI.getTRI()); U.isValid(); ++U)
PU.set(*U);
}
Units |= PU.flip();
return *this;
}