[PATCH] D89189: [ARM][MachineOutliner] Do not overestimate LR liveness in return block

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


================
Comment at: llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp:5730
+    // Check defs of LR.
+    if (MI.modifiesRegister(ARM::LR, nullptr))
+      Live = false;
----------------
chill wrote:
> yroux wrote:
> > I think we can get ride of passing nullptr since it is TRI default value in the prototype
> One would think so, wouldn't they? :D 
> 
> I created D89625
If you omit TRI, you'll miss defs of super-registers of LR.  I'm not sure there are any at the moment, but there are for other GPRs.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89189/new/

https://reviews.llvm.org/D89189