David Sherwood 79d34a5a1b [SVE][CodeGen] Fix bug when falling back to DAG ISel ...

In an earlier commit 584d0d5c17 I
added functionality to allow AArch64 CodeGen support for falling
back to DAG ISel when Global ISel encounters scalable vector
types. However, it seems that we were not falling back early
enough as llvm::getLLTForType was still being invoked for scalable
vector types.

I've added a new fallback function to the call lowering class in
order to catch this problem early enough, rather than wait for
lowerFormalArguments to reject scalable vector types.

Differential Revision: https://reviews.llvm.org/D82524

2020-07-07 09:23:04 +01:00

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