With the removal of mlir-vulkan-runner (as part of #73457) in
e7e3c45bc70904e24e2b3221ac8521e67eb84668, mlir-cpu-runner is now the
only runner for all CPU and GPU targets, and the "cpu" name has been
misleading for some time already. This commit renames it to mlir-runner.
To run integration tests using qemu-aarch64 on x64 host, below flags are
added to the cmake command when building mlir/llvm:
-DMLIR_INCLUDE_INTEGRATION_TESTS=ON \
-DMLIR_RUN_ARM_SVE_TESTS=ON \
-DMLIR_RUN_ARM_SME_TESTS=ON \
-DARM_EMULATOR_EXECUTABLE="<...>/qemu-aarch64" \
-DARM_EMULATOR_OPTIONS="-L /usr/aarch64-linux-gnu" \
-DARM_EMULATOR_MLIR_CPU_RUNNER_EXECUTABLE="<llvm_arm64_build_top>/bin/mlir-cpu-runner-arm64"
\
-DARM_EMULATOR_LLI_EXECUTABLE="<llvm_arm64_build_top>/bin/lli" \
-DARM_EMULATOR_UTILS_LIB_DIR="<llvm_arm64_build_top>/lib"
The last three above are prebuilt on, or cross-built for, an aarch64
host.
This patch introduced substittutions of "%native_mlir_runner_utils" etc. and use
them in SVE/SME integration tests. When configured to run using qemu-aarch64,
mlir runtime util libs will be loaded from ARM_EMULATOR_UTILS_LIB_DIR, if set.
Some tests marked with 'UNSUPPORTED: target=aarch64{{.*}}' are still run
when configured with ARM_EMULATOR_EXECUTABLE and the default target is
not aarch64.
A lit config feature 'mlir_arm_emulator' is added in
mlir/test/lit.site.cfg.py.in and to UNSUPPORTED list of such tests.
This commit fixes memory leaks in sparse tensor integration tests by
adding `bufferization.dealloc_tensor` ops.
Note: Buffer deallocation will be automated in the future with the
ownership-based buffer deallocation pass, making `dealloc_tensor`
obsolete (only codegen path, not when using the runtime library).
Rationale:
A bufferization.alloc_tensor can be directly replaced
with tensor.empty since these are more or less semantically
equivalent. The latter is considered a bit more "pure"
with respect to SSA semantics.
CHANGES SINCE THE ORIGINAL VERSION
----------------------------------
The default test set-up was extracted from
* SparseTensor/CPU/lit.local.cfg.
and duplicated in all tests. This is to support downstream users that
don't use these local LIT config files.
SUMMARY OF CHANGES
------------------
This patch aims to reduce test duplication. This is a direct follow-up of:
1. https://reviews.llvm.org/D155403 (test duplication), and
2. https://reviews.llvm.org/D155405 (code re-use),
All SVE/VLA tests are now enabled _conditionally_ and refactored to use
`mlir-cpu-runner` rather than `lli`. The former helps with test
duplication and the latter with code re-use.
A few additional refactoring changes are included.
1. The reduce verbosity, long runtime library names like:
%mlir_native_utils_lib_dir/libmlir_c_runner_utils%shlibext
are replaced with:
%mlir_c_runner_utils
2. In order to keep the code and the comments in sync, and to maintain
consistency across the tests, the following:
enable-runtime-library=true
is swapped with (and vice-versa):
enable-runtime-library=false
Note that this change won't affect test coverage. Only few tests
required such update.
3. A VLS vectorization `RUN` line is added in tests where there was a
VLA/VLS `RUN` line, but no VLS `RUN` line (with a few exceptions of
tests that only contained one `RUN` line to begin with).
4. A few test variables are renamed/added. Most notable example:
* %{options}` --> %{sparse_compiler_opts}
TEST RUNTIME IMPROVEMENT
------------------------
Tl;Dr This change improves test execution time by ~25%.
At the moment, the following `llvm-lit` invocation takes ~7.30s on my
AArch64 workstation (with SVE):
llvm-lit <llvm-project>/mlir/test/Integration/Dialect/SparseTensor/CPU/
This timing doesn't change no matter what the value of the following
CMake variable is (that should disable some tests):
MLIR_RUN_ARM_SVE_TESTS
With this patch, the execution time will indeed depend on the value of
the above CMake variable:
* with `MLIR_RUN_ARM_SVE_TESTS=true` the timing remains intact,
* with `MLIR_RUN_ARM_SVE_TESTS=false` the timing drops to ~5.40s (~25%
improvement).
This is expected:
* on average there are 4 `RUN` lines per test,
* _without this change_ (and with `MLIR_RUN_ARM_SVE_TESTS=false`) the
4th `RUN` line would in most cases duplicate the 3rd `RUN` line,
* _with this change) (and with `MLIR_RUN_ARM_SVE_TESTS=false`) the
4th `RUN` line becomes empty.
PATCH SIZE
----------
While rather large and touching many files, most changes in this patch
are rather mechanical. All test configurations have been preserved and
only in a handful of cases new `RUN` lines added.
Differential Revision: https://reviews.llvm.org/D156625
SUMMARY OF CHANGES
------------------
This patch aims to reduce test duplication and to improve code re-use in
SparseTensor integration tests for CPU. This is a direct follow-up of:
1. https://reviews.llvm.org/D155403 (test duplication), and
2. https://reviews.llvm.org/D155405 (code re-use),
The key logic for this patch is implemented in:
* SparseTensor/CPU/lit.local.cfg.
Essentially, the set-up that used to be repeated across all test files
has been extracted into a common LIT configuration file. This makes code
re-use straightforward.
All SVE/VLA tests are now enabled _conditionally_ and refactored to use
`mlir-cpu-runner` rather than `lli`. The former helps with test
duplication and the latter with code re-use.
A few additional refactoring changes are included.
1. The reduce verbosity, long runtime library names like:
%mlir_native_utils_lib_dir/libmlir_c_runner_utils%shlibext
are replaced with:
%mlir_c_runner_utils
2. In order to keep the code and the comments in sync, and to maintain
consistency across the tests, the following:
enable-runtime-library=true
is swapped with (and vice-versa):
enable-runtime-library=false
Note that this change won't affect test coverage. Only few tests
required such update.
3. A VLS vectorization `RUN` line is added in tests where there was a
VLA/VLS `RUN` line, but no VLS `RUN` line (with a few exceptions of
tests that only contained one `RUN` line to begin with).
4. A few test variables are renamed/added. Most notable example:
* %{options}` --> %{sparse_compiler_opts}
TEST RUNTIME IMPROVEMENT
------------------------
Tl;Dr This change improves test execution time by ~25%.
At the moment, the following `llvm-lit` invocation takes ~7.30s on my
AArch64 workstation (with SVE):
llvm-lit <llvm-project>/mlir/test/Integration/Dialect/SparseTensor/CPU/
This timing doesn't change no matter what the value of the following
CMake variable is (that should disable some tests):
MLIR_RUN_ARM_SVE_TESTS
With this patch, the execution time will indeed depend on the value of
the above CMake variable:
* with `MLIR_RUN_ARM_SVE_TESTS=true` the timing remains intact,
* with `MLIR_RUN_ARM_SVE_TESTS=false` the timing drops to ~5.40s (~25%
improvement).
This is expected:
* on average there are 4 `RUN` lines per test,
* _without this change_ (and with `MLIR_RUN_ARM_SVE_TESTS=false`) the
4th `RUN` line would in most cases duplicate the 3rd `RUN` line,
* _with this change) (and with `MLIR_RUN_ARM_SVE_TESTS=false`) the
4th `RUN` line becomes empty.
PATCH SIZE
----------
While rather large and touching many files, most changes in this patch
are rather mechanical. All test configurations have been preserved and
only in a handful of cases new `RUN` lines added.
Differential Revision: https://reviews.llvm.org/D156625
