[PATCH] D112852: [GlobalISel] Allow DBG_VALUE to use undefined vregs before LiveDebugValues

[Justin Bogner via Phabricator via llvm-commits]

bogner added inline comments.


================
Comment at: llvm/lib/CodeGen/MachineVerifier.cpp:1992
+        if (isFunctionTracksDebugUserValues || !MO->isUse() ||
+            !MI->isDebugValue() || !MRI->def_empty(Reg)) {
+          // If we're post-Select, we can't have gvregs anymore.
----------------
Is this check in the right place? I'm seeing "Generic virtual register use cannot be undef" (just above) errors after this change on an out of tree target.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D112852/new/

https://reviews.llvm.org/D112852