Displaying 3 results from an estimated 3 matches for "newoptlevel".
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getoptlevel
2015 Nov 17
3
Mips unconditionally uses fast-isel?
> > The other thing that might work, is having TargetMachine remember how
> > the fast-isel option got set, and make OptLevelChanger do the right
> > thing. But that seems like a hack to work around Mips not obeying the
> > specified optimization level, honestly.
>
> I think we should do that as well. I don't think it's right that optnone
> enables Fast
2015 Nov 18
4
Mips unconditionally uses fast-isel?
...l
-O1
SelectionDAG
SelectionDAG
FastISel
-O2
SelectionDAG
SelectionDAG
FastISel
-O3
SelectionDAG
SelectionDAG
FastISel
The cells marked with '*' differ from the current behaviour.
In terms of code, I think this part of OptLevelChanger::OptLevelChanger():
if (NewOptLevel == CodeGenOpt::None) {
DEBUG(dbgs() << "\nEnable FastISel for Function "
<< IS.MF->getFunction()->getName() << "\n");
IS.TM.setFastISel(true);
}
Should be:
if (NewOptLevel == CodeGenOpt::None) {
DEBUG(dbgs() &l...
2015 Nov 18
2
Mips unconditionally uses fast-isel?
...l
-O1
SelectionDAG
SelectionDAG
FastISel
-O2
SelectionDAG
SelectionDAG
FastISel
-O3
SelectionDAG
SelectionDAG
FastISel
The cells marked with '*' differ from the current behaviour.
In terms of code, I think this part of OptLevelChanger::OptLevelChanger():
if (NewOptLevel == CodeGenOpt::None) {
DEBUG(dbgs() << "\nEnable FastISel for Function "
<< IS.MF->getFunction()->getName() << "\n");
IS.TM.setFastISel(true);
}
Should be:
if (NewOptLevel == CodeGenOpt::None) {
DEBUG(dbgs() &l...