https://bugs.kde.org/show_bug.cgi?id=432809
--- Comment #2 from Mark Wielaard <m...@klomp.org> --- (In reply to Mark Wielaard from comment #1) > We had something similar in bug #422174 with REX prefixed JMP instructions. > Lets see what the instruction manual says... It says (for PUSH, POP, PUSHF/D/Q, POPF/D/Q and LEAVE): "When in 64-bit mode, instruction defaults to 64-bit operand size and cannot encode 32-bit operand size." Which is explains the sz == to sz = 8 "upgrade" we always do. It seems a REX.W prefix simply explicitly sets the operant size to 8, and so can/must be ignored as redundant. -- You are receiving this mail because: You are watching all bug changes.
