>
> It's not "starting from $3". It's $3 and nothing else ;-) It's not
> intended to be used as (MIPS_PROLOGUE_TEMP_REGNUM + N).
>
> $3 was chosen because it's a MIPS16 register, and can therefore
> be used for both MIPS16 and normal-mode code. $2 used to be the
> static chain register, which le
"Amker.Cheng" writes:
> Hi :
>I found the temp register used for saving registers when expanding
> prologue is defined by
> macro MIPS_PROLOGUE_TEMP_REGNUM on mips target, like:
>
> #define MIPS_PROLOGUE_TEMP_REGNUM \
> (cfun->machine->interrupt_handler_p ? K0_REG_NUM : GP_REG_FIRST + 3)
>
>
"Amker.Cheng" writes:
>I found the temp register used for saving registers when expanding
> prologue is defined by
> macro MIPS_PROLOGUE_TEMP_REGNUM on mips target, like:
>
> #define MIPS_PROLOGUE_TEMP_REGNUM \
> (cfun->machine->interrupt_handler_p ? K0_REG_NUM : GP_REG_FIRST + 3)
>
> I don
