ef47462ce9
LLVM has pretty thorough support for `int128`, and it has started seeing some use. Even thouth we already have support for the `SPV_ALTERA_arbitrary_precision_integers` extension, the BE was oddly capping integer width to 64-bits. This patch adds partial support for lowering 128-bit integers to `OpTypeInt 128`. Some work remains to be done around legalisation support and validating constant uses (e.g. cases that get lowered to `OpSpecConstantOp`).
The LLVM Compiler Infrastructure
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