forked from OSchip/llvm-project
73bea97a33
Cross function boundary bufferization support is added. This is enabled by cross-function boundary alias analysis, for which the bufferization process is extended: it can now modify the BufferizationAliasInfo as new ops are introduced. A number of simplifying assumptions are made: 1. by default we bufferize to the most dynamic strided memref type, further memref::CastOp canonicalizations are expected to clean up the IR. 2. in the current implementation, the stride information is always erased at function boundaries. A subsequent pass will be required to analyze the meet of all call ops to a function and decide whether more static buffer types can be used. This will potentially clone functions when it is deemed profitable to do so (e.g. when the stride-1 dimension may vary). 3. external function always bufferize to the most dynamic strided memref version. This may require special annotations for specifying that particular operands of top-level functions have contiguous buffer layout. An alternative to point 3. would be to support tensor layout annotations, which is currently not supported in MLIR. Differential revision: https://reviews.llvm.org/D104873 |
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| Analysis | ||
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| CAPI | ||
| Conversion | ||
| Dialect | ||
| ExecutionEngine | ||
| IR | ||
| Interfaces | ||
| Parser | ||
| Pass | ||
| Reducer | ||
| Rewrite | ||
| Support | ||
| TableGen | ||
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| Translation | ||
| CMakeLists.txt | ||