[PATCH] D40876: AArch64: Fix emergency spillslot being out of reach for large callframes

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> There is no inline asm constraint letter defined for FP as far as I can see (so you only could rely on it indirectly by having so many register arguments to inline assembly that you need to use the FP).

You can constrain an asm operand to a specific register using a local register variable. Granted, the behavior of that is kind of confusing even without this patch, so maybe it doesn't matter.


https://reviews.llvm.org/D40876