On Nov 10 2020, Stefan Kanthak wrote: > Eric Botcazou <botca...@adacore.com> wrote: > >>> The implementation of the __ashlDI3(), __ashrDI3() and __lshrDI3() functions >>> is rather bad, it yields bad machine code at least on i386 and AMD64. Since >>> GCC knows how to shift integers twice the register size these functions can >>> be written as one-liners. >> >> These functions are precisely meant to be used when GCC cannot do that. > > On which processor(s) is GCC unable to generate code for DWtype shifts?
On most 32-bit targets with -Os. Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."
