https://sourceware.org/bugzilla/show_bug.cgi?id=22871
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Jan Beulich from comment #1) > subq %r64, %r64 and testq $imm31, %r64 could similarly benefit. Whether I added subq and testq to users/hjl/optimize branch at https://github.com/hjl-tools/binutils-gdb/tree/users/hjl/optimize > converting test{q,l,w} $imm8,%r{64,32,16} to testb $imm8,%r8 isn't as clear, > but I think reads of 8-bit registers are commonly not causing stalls (only > writes do). > > Along those lines test{q,l,w} $imm,mem might allow conversion if all set > bits in imm fall within a single byte. Of course care needs to be taken that > the adjustment to the displacement won't break addressability of the object. Let's go with 64-bit register cases first and see how they go. -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
