[clang] [llvm] [LLVMABI] Add support for SVE types in the LLVM ABI library (PR #221375)

[Madhur Amilkanthwar via cfe-commits]

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+//===- QualTypeMapperTest.cpp - Tests for QualType to ABI type mapping ----===//
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madhur13490 wrote:

Nice tests for pinning the type shapes. Since this is a classification-affecting change, though, I think we also want the usual two: an ABI unit test that calls computeInfo and checks the resulting ArgInfo (including a register-exhaustion case), and a dual-run parity test under clang/test/CodeGen/AArch64/ that runs with and without -fexperimental-abi-lowering against the same CHECK lines with --implicit-check-not="not yet implemented". Note that parity test can't pass while reportNYI fires — which is really the signal that these cases should be gated for now rather than tested around.

https://github.com/llvm/llvm-project/pull/221375