Now that there can be multiple hint registers from targets, it doesn't
make sense to have a function that returns 'the' preferred register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169190
91177308-0d34-0410-b5e6-
96231b3b80d8
grow();
}
- /// @brief returns the register allocation preference.
- unsigned getRegAllocPref(unsigned virtReg);
-
/// @brief returns true if VirtReg is assigned to its preferred physreg.
bool hasPreferredPhys(unsigned VirtReg);
return SS;
}
-unsigned VirtRegMap::getRegAllocPref(unsigned virtReg) {
- std::pair<unsigned, unsigned> Hint = MRI->getRegAllocationHint(virtReg);
- unsigned physReg = Hint.second;
- if (TargetRegisterInfo::isVirtualRegister(physReg) && hasPhys(physReg))
- physReg = getPhys(physReg);
- if (Hint.first == 0)
- return (TargetRegisterInfo::isPhysicalRegister(physReg))
- ? physReg : 0;
- return TRI->ResolveRegAllocHint(Hint.first, physReg, *MF);
-}
-
bool VirtRegMap::hasPreferredPhys(unsigned VirtReg) {
unsigned Hint = MRI->getSimpleHint(VirtReg);
if (!Hint)