Displaying 1 result from an estimated 1 matches for "regunused0".
2017 Aug 15
2
Problem of getting two unused registers in eliminateFrameIndex()
Hello all,
For my custom processor backend I am trying add some instruction using
BuildMI() inside eliminateFrameIndex().
I tried RegScavenger like this:
unsigned RegUnused0 = RS->FindUnusedReg(&LASER::GNPRegsRegClass);
if (!RegUnused0)
RegUnused0 = RS->scavengeRegister(&LASER::GNPRegsRegClass, II, SPAdj);
assert(RegUnused0 && "Register scavenger failed");
RS->setRegUsed(RegUnused0);
It works but there are two issues:
1) I need to...