[GlobalISel] Ensure MachineIRBuilder::getDebugLoc() returns a const reference. NFCI.
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Sat, 8 May 2021 15:22:46 +0000 (16:22 +0100)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Sat, 8 May 2021 15:23:28 +0000 (16:23 +0100)
commitab5ee342b92b4661cfec3cdd647c9a5c18e346dd
treea0039428443ea548ff4fcc04a02be6c97e8b57aa
parent4524d8b7552c1d2dcb941c708620fb1f1b998cd1
[GlobalISel] Ensure MachineIRBuilder::getDebugLoc() returns a const reference. NFCI.

Avoids a lot of unnecessary tracking increments/decrements of the underlying TrackingMDNodeRef.
llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h