[PATCH] D139908: [clang] Do not extend i8 return values to i16 on AVR.

[Ben Shi via Phabricator via cfe-commits]

benshi001 added a comment.

On 32-bit / 64-bit machines, a function returning lower types (via a register) should an explicit sign/zero extension to full fill the register.

But on AVR, a 8-bit register is used to return 8-bit values, so the sign/zero extension is unnecessary, and lead to extra useless assembly.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D139908/new/

https://reviews.llvm.org/D139908