[PATCH] D102318: [TargetRegisterInfo] Speed up getAllocatableSet. NFCI.

[Jay Foad via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGa383d325f6c6: [TargetRegisterInfo] Speed up getAllocatableSet. NFCI. (authored by foad).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D102318/new/

https://reviews.llvm.org/D102318

Files:
  llvm/lib/CodeGen/TargetRegisterInfo.cpp


Index: llvm/lib/CodeGen/TargetRegisterInfo.cpp
===================================================================
--- llvm/lib/CodeGen/TargetRegisterInfo.cpp
+++ llvm/lib/CodeGen/TargetRegisterInfo.cpp
@@ -267,8 +267,9 @@
   }
 
   // Mask out the reserved registers
-  BitVector Reserved = getReservedRegs(MF);
-  Allocatable &= Reserved.flip();
+  const MachineRegisterInfo &MRI = MF.getRegInfo();
+  const BitVector &Reserved = MRI.getReservedRegs();
+  Allocatable.reset(Reserved);
 
   return Allocatable;
 }


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