Re: [PATCH v2] xtensa: Eliminate the use of callee-saved register that saves and restores only once

Hi Suwa-san, On Mon, Jan 16, 2023 at 8:12 PM Takayuki 'January June' Suwa wrote: > > In the case of the CALL0 ABI, values that must be retained before and > after function calls are placed in the callee-saved registers (A12 > through A15) and referenced later. However, it is often the case that

[PATCH v2] xtensa: Eliminate the use of callee-saved register that saves and restores only once

In the case of the CALL0 ABI, values that must be retained before and after function calls are placed in the callee-saved registers (A12 through A15) and referenced later. However, it is often the case that the save and the reference are each only once and a simple register- register move (the