CONFIG_ARCH_SUPPORTS_INT128: Why not mips, s390, powerpc, and alpha?

(Cross-posted in case there are generic issues; please trim if discussion wanders into single-architecture details.) I was working on some scaling code that can benefit from 64x64->128-bit multiplies. GCC supports an __int128 type on processors with hardware support (including z/Arch and

Re: CONFIG_ARCH_SUPPORTS_INT128: Why not mips, s390, powerpc, and alpha?

On Fri, Mar 29, 2019 at 01:07:07PM +, George Spelvin wrote: > I was working on some scaling code that can benefit from 64x64->128-bit > multiplies. GCC supports an __int128 type on processors with hardware > support (including z/Arch and MIPS64), but the support was broken on > early

Re: CONFIG_ARCH_SUPPORTS_INT128: Why not mips, s390, powerpc, and alpha?

Hi! On Fri, Mar 29, 2019 at 01:07:07PM +, George Spelvin wrote: > I was working on some scaling code that can benefit from 64x64->128-bit > multiplies. GCC supports an __int128 type on processors with hardware > support (including z/Arch and MIPS64), but the support was broken on > early