[llvm-commits] [patch] Support "inreg sret"

[Rafael Espíndola]

> LGTM

Thanks!

Testing with clang/utils/ABITest found another issue: The callee would
still pop 4 bytes of the stack for the struct pointer (and the caller
compensate for that). With the attached patch that is disabled when
the struct pointer is in a register.

Cheers,
Rafael
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