[all-commits] [llvm/llvm-project] 4113e1: [clang][PGO] Apply artificial DebugLoc to llvm.ins...

[Michael Buch via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4113e15153d5af39a12c6bcf16e6b35614dc13a2
      https://github.com/llvm/llvm-project/commit/4113e15153d5af39a12c6bcf16e6b35614dc13a2
  Author: Michael Buch <michaelbuch12 at gmail.com>
  Date:   2024-05-02 (Thu, 02 May 2024)

  Changed paths:
    M clang/lib/CodeGen/CodeGenFunction.h
    A clang/test/Profile/debug-info-instr_profile_switch.cpp

  Log Message:
  -----------
  [clang][PGO] Apply artificial DebugLoc to llvm.instrprof.increment instructions (#90717)

Prior to this change the debug-location for the
`llvm.instrprof.increment` intrinsic was set to whatever the current
DIBuilder's current debug location was set to. This meant that for
switch-statements, a counter's location was set to the previous case's
debug-location, causing confusing stepping behaviour in debuggers. This
patch makes sure we attach a dummy debug-location for the increment
instructions.

rdar://123050737



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