This is the first patch in a series of test updates, to change X86 tests to look for instruction referencing variable locations. This patch contains a bunch of replacements of:
DBG_VALUE $somereg
with,
SOMEINST debug-instr-number1 DBG_INSTR_REF 1, 0, ...
It's mostly SelectionDAG tests that are making sure that the variable location assignment is placed in the correct position in the instructions.