On 4/2/19 2:30 PM, William Tambe wrote: > When looking at backends for moxie and ft32, which are cpus for which > the return register is 32bits, TARGET_ RETURN_IN_MEMORY is implemented > such that the function value is returned in a register even when its > size is 64bits. ie: > > https://github.com/gcc-mirror/gcc/blob/gcc-8_3_0-release/gcc/config/ft32/ft32.c#L63 > > https://github.com/gcc-mirror/gcc/blob/gcc-8_3_0-release/gcc/config/moxie/moxie.c#L60 > > Any idea why it is implemented that way ? > Could be that's how the ABI is defined. It's often the case that ABI's define double-word objects as being passed and returned in register pairs for efficiency. jeff
