60a20bcf3d
Annotating ssa defs without affecting compilation is impossible with debug info instructions since referencing a nir_def from the debug info instr will add uses. The old approach also stops worrking if passes reorder instructions. This patch proposes a solution which should not regress performance just like the old approach. The difference is that this one allocates a bit more space for debug info instead of adding a new instruction for it. Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33141>