[PATCH] D128806: [RISCV] Fix wrong position of prologue_end

[luxufan via Phabricator via llvm-commits]

StephenFan added a comment.

I think removing debug location is problematic. Because `storeRegToStackSlot` method is used in many places, for example, register spillers use it to spill a register to stack frame. If the spill instruction's debug location info were removed, its debug location would follow the previous instruction's location when emitting debug location info. It is ok to do that in -O0, but if the optimization level were -O2, instructions would be hoisted or sink which would cause the spill instruction to have wrong debug location info.


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  https://reviews.llvm.org/D128806/new/

https://reviews.llvm.org/D128806