Fix insert DBG_VALUE after terminator Failure for Hexagon (#173401)
This patch fixes an assertion failure on VLIW targets like Hexagon,
where a packet can contain both a terminator and a spill/copy. The
existing code did not look inside bundles, hence, it could leave a
transfer anchored on a terminator. When LiveDebugValues later
attempted to insert a DBG_VALUE after that packet, it hit:
Assertion `!TR.TransferInst->isTerminator() && "Cannot insert
DBG_VALUE after terminator"' failed
The change switches to instr_iterator and walks each packet with
getBundleStart/getBundleEnd. Packets containing a terminator are skipped
for insertion; non‑terminator ops in other packets are still processed
normally. This avoids illegal insertion points while keeping spill/copy
tracking intact.
llvm-project
02771a3e - Fix insert DBG_VALUE after terminator Failure for Hexagon (#173401)
