7956dc6ba2
* Change CLIF `shuffle` to validate lane indices Previously the CLIF `shuffle` instruction did not perform any validation on the lane shuffle mask and specified that out-of-bounds lanes always returned 0 as the value. This behavior though is not required by WebAssembly which validates that lane indices are always in-bounds. Additionally since these are static immediates even other code generators should be able to verify that the immediates are in-bounds. As a result this commit updates the definition of the `shuffle` instruction to specify that all byte immediates must be in-bounds in the range of [0, 32). The verifier has been updated and some test cases have been removed that were testing this functionality. Closes #5989 * Only generate valid shuffle immediates in fuzzer
cranelift-fuzzgen
This crate implements a generator to create random Cranelift modules.