What's Changed

• Backport a fix for the simpler bug in lossless_cast by @abadams in https://github.com/halide/Halide/pull/8264
• Fix Vulkan SIMT mappings for GPU loop vars; avoid formatting the GPU kernel to a string for Vulkan (since it's binary SPIR-V needs to remain intact). @derek-gerstmann in https://github.com/halide/Halide/pull/8270

Full Changelog: https://github.com/halide/Halide/compare/v17.0.1...v17.0.2