[CK_TILE] Add logits soft-capping & customization support to the FMHA forward kernel/pipelines (#2163)

* hack for cap logits

* fix bug

* Re-format files

* Allow specifying logits_soft_cap through APIs

* Support turn on/off logits_soft_cap in async pipeline

* Do not generate non-verified kernels

* Align receipt used in Aiter

* Sync logits soft-capping across pipelines

* Re-enable some hdim pipelines

* fix perf

* Add attention variant for logits_soft_cap

* Add newline at end-of-file

* Fix performance

* Add comment to explain logits_soft_cap pre-processing

* Unify code

* Unify floating-point literal style

* Use class data member to slience the compilation error

* [CK_TILE] Update attention customizaton interface: add LogitsMask() (#2133)

* Send 'mask' along with variant params to the LogitsMask()

* Send block indices to the variant

* Add indices parameters in variant interface

* Fix fmha bwd codegen error

* Allow switch logits_soft_cap impl

* Eliminate register spills

* Fix compilation errors

* Fix wrong LSE

* Fix LSE for splitkv kernel

* Sync splitkv pipeline changes

* Add batch_prefill kernel/pipeline

* Fix codegen error

* Undo changes in CMakeLists.txt

* Merge pipeline filtering check

* Use different code path if kHasLogitsSoftCap=false

* Remove [[maybe_unused]] attribute

* Use pre-existing compile-time flag to instantiate templates

* Sync pipeline changes

* Update CHANGELOG.md

---------

Co-authored-by: Bernard <bernaliu@amd.com>
Co-authored-by: coderfeli <coderfeli@163.com>

example/ck_tile/01_fmha/generate.py

@@ -21,8 +21,7 @@ class HandlerId(IntEnum):
 ops = []
 for importer, module_name, _ in pkgutil.iter_modules(codegen.ops.__path__):
     full_module_name = '%s.%s' % (codegen.ops.__name__, module_name)
-    if full_module_name not in sys.modules:
-        ops.append(importer.find_spec(module_name).loader.load_module(module_name))
+    ops.append(importer.find_spec(module_name).loader.load_module(module_name))
 unwanted_prefix = 'fmha_'
 handlers = dict(
     [(op.__name__[len(unwanted_prefix):] if op.__name__.startswith(unwanted_prefix) else op.__name__,