Google uses AI agent swarms to find and fix TPU compiler miscompilation bugs

Google's team reports using swarms of AI agents to find and fix silent miscompilation bugs in its TPU compiler, resolving over 142 so far, according to a paper that Elvis Saravia (@omarsar0) pointed to on X. The framework combines fuzzing on synthetic and production graphs with bisection that narrows a failure to a single operation inside a fused kernel. The team says silent miscompilations are the most dangerous class of compiler bug. Per the report, agent patches needed adversarial pre-filtering before human review, and reviewer effort grew faster than fix complexity.