GCC inline assembly : let compiler decide what register to use for temp value?

I don't know why I saw the overhead before, but using external register temp variable works with no overhead even with -O0 (no optimization). So I am using.

I don't know why I saw the overhead before, but using external register temp variable works with no overhead even with -O0 (no optimization). So I am using: register uint8_t tmp; asm volatile ( "ldi %tmp, 0x18 \n\t" "sts 0x60, %tmp" : tmp "=r"(tmp) :); It still requires a variable to be declared and than described in the output block of the asm statement, but it does create assembly code I want (no overhead).

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.