fix async copytest bug (#2509)

* fix async copytest bug

* Add block_sync_lds_direct_load utility

* fix the s_waitcnt_imm calculation

* Improve s_waitcnt_imm calculation

* fix vmcnt shift

* add input validation and bug fix

* remove unnecessary output

* move test_copy into test

* change bit width check

* refactor macros into constexpr functions

which still get inlined

* wrap s_waitcnt api

* parameterize test

* cleanup

* cleanup fp8 stub

* add fp8 test cases; todo which input parameters are valid?

* replace n for fp8 in test cases

* add large shapes; fp8 fails again

* change input init

* test sync/async

* time the test

* clang-format test

* use float instead of bfloat to cover a 4-byte type

* fix logic - arg sections should be 'or'd

* make block_sync_lds_direct_load interface similar to old ck

* fix a few comment typos

* name common shapes

* revert the example to original logic of not waiting lds

* clang-format

---------

Co-authored-by: Max Podkorytov <4273004+tenpercent@users.noreply.github.com>
Co-authored-by: Thomas Ning <Thomas.Ning@amd.com>

test/ck_tile/memory_copy/README.md

@@ -0,0 +1,31 @@
+# Copy Kernel
+This folder contains basic setup code designed to provide a platform for novice 
+CK_Tile kernel developers to test basic functionality with minimal additional 
+code compared to the functional code. Sample functional code for a simple
+tile distribution for DRAM window and LDS window are provided and data is moved
+from DRAM to registers, registers to LDS, LDS to registers and finally data
+is moved to output DRAM window for a simple copy operation.
+
+## build
+```
+# in the root of ck_tile
+mkdir build && cd build
+# you can replace <arch> with the appropriate architecture 
+# (for example gfx90a or gfx942) or leave it blank
+sh ../script/cmake-ck-dev.sh  ../ <arch>
+# Make the copy kernel executable
+make test_copy -j
+```
+This will result in an executable `build/bin/test_copy_kernel`
+
+## example
+```
+args:
+          -m        input matrix rows. (default 64)
+          -n        input matrix cols. (default 8)
+          -id       warp to use for computation. (default 0)
+          -v        validation flag to check device results. (default 1)
+          -prec     datatype precision to use. (default fp16)
+          -warmup   no. of warmup iterations. (default 50)
+          -repeat   no. of iterations for kernel execution time. (default 100)
+```