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5edf127384
* Improve the verifier of `memref.subview` to detect out-of-bounds extractions. * Improve the documentation of `memref.subview` to make clear that out-of-bounds extractions are not allowed. Rewrite examples to use the new `strided<>` notation instead of `affine_map` layout maps. Also remove all unrelated operations (`memref.alloc`) from the examples. * Fix various test cases where `memref.subview` ops ran out-of-bounds. * Update canonicalizations patterns to ensure that they do not fold IR if it would generate IR that no longer verifies. Related discussion on Discourse: https://discourse.llvm.org/t/out-of-bounds-semantics-of-memref-subview/85293 This is a re-upload of #131876, which was reverted due to failing GPU tests. These tests were faulty and fixed in #133051.