Merge commit 'c83ad6d01e7b89ec71080d97c7e5db7ac1f4fda6' into concedo_experimental

# Conflicts:
#	.github/workflows/bench.yml.disabled
#	Makefile
#	Package.swift
#	README.md
#	docs/backend/SYCL.md
#	examples/CMakeLists.txt
#	examples/benchmark/benchmark-matmult.cpp
#	ggml/src/CMakeLists.txt
#	scripts/sync-ggml-am.sh
#	scripts/sync-ggml.sh
#	src/llama.cpp
#	tests/test-backend-ops.cpp

CMakeLists.txt

@@ -425,7 +425,8 @@ add_library(ggml
             ggml/include/ggml.h
             ggml/src/ggml-alloc.c
             ggml/include/ggml-alloc.h
-            ggml/src/ggml-backend.c
+            ggml/src/ggml-backend.cpp
+            ggml/src/ggml-backend-impl.h
             ggml/include/ggml-backend.h
             ggml/src/ggml-quants.c
             ggml/src/ggml-quants.h