Fraser Cormack 7fb66d4035 [MemCpyOpt] Fix a variety of scalable-type crashes ... This patch fixes a variety of crashes resulting from the `MemCpyOptPass` casting `TypeSize` to a constant integer, whether implicitly or explicitly. Since the `MemsetRanges` requires a constant size to work, all but one of the fixes in this patch simply involve skipping the various optimizations for scalable types as cleanly as possible. The optimization of `byval` parameters, however, has been updated to work on scalable types in theory. In practice, this optimization is only valid when the length of the `memcpy` is known to be larger than the scalable type size, which is currently never the case. This could perhaps be done in the future using the `vscale_range` attribute. Some implicit casts have been left as they were, under the knowledge they are only called on aggregate types. These should never be scalably-sized. Reviewed By: nikic, tra Differential Revision: https://reviews.llvm.org/D109329		2021-09-08 11:21:36 +01:00
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llvm	[MemCpyOpt] Fix a variety of scalable-type crashes	2021-09-08 11:21:36 +01:00
llvm-c	[NFC][C API] Make LLVMSetInstrParamAlignment's index param type LLVMAttributeIndex	2021-09-07 15:13:45 -07:00