add a paragraph discussing convert_T to 1.5 CHANGES
@@ -8,6 +8,10 @@ Notable User Facing Changes
- POCL_TRACE_EVENT, POCL_TRACE_EVENT_OPT and POCL_TRACE_EVENT_FILTER
environment variables were renamed to
POCL_TRACING, POCL_TRACING_OPT and POCL_TRACING_FILTER, respectively.
+- Refactored the implementation of convert_T() OpenCL functions to better meet
+ autovectorization criteria under LLVM, thus utilizing device's SIMD ISA
+ capabilities where available; e.g. on an ARM64 Cortex-A72 convert_int8(short8)
+ is 5.5x faster now when measured in a tight loop.
Usability
---------
