Vedant Kumar 2a5675f11d [MachineDebugify] Insert synthetic DBG_VALUE instructions ... Summary: Teach MachineDebugify how to insert DBG_VALUE instructions. This can help find bugs causing CodeGen differences when debug info is present. DBG_VALUE instructions are only emitted when -debugify-level is set to locations+variables. There is essentially no attempt made to match up DBG_VALUE register operands with the local variables they ought to correspond to. I'm not sure how to improve the situation. In some cases (MachineMemOperand?) it's possible to find the IR instruction a MachineInstr corresponds to, but in general this seems to call for "undoing" the work done by ISel. Reviewers: dsanders, aprantl Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D78135		2020-04-22 17:03:39 -07:00
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locations-and-values.mir	[MachineDebugify] Insert synthetic DBG_VALUE instructions	2020-04-22 17:03:39 -07:00