[PATCH] D28673: [XRay][Arm32] Reduce the portion of the stub and implement more staging for tail calls - in LLVM

[Serge Rogatch via Phabricator via llvm-commits]

rSerge added a comment.

In https://reviews.llvm.org/D28673#645485, @rengolin wrote:

> Where is this used?


This virtual function is called via a pointer to a base class in XRayInstrumentation.cpp : see the body of  `void XRayInstrumentation::prependRetWithPatchableExit(MachineFunction &MF, const TargetInstrInfo *TII)`.


https://reviews.llvm.org/D28673