[PATCH] D76848: [CodeGen][ARM] Error when writing to specific reserved registers in inline asm

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> But r7 was not an output, it's an input. We didn't write to it; we read from it. Regardless of frame pointers, aren't we still producing an error about writing to a register that we did not write to?

An inline asm itself doesn't write to its inputs, but the compiler does.  The compiler has to write the value of each input to the named location before the inline asm executes.


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