* config/cris/cris.c (TARGET_FLAGS_REGNUM): Define. This made a whole lot of difference regarding regressions in the delay-slot filling. Before this, comparing __lshrdi3 for v10 before/after decc0ration and other nearby functions was worse by several missing delay-slot fills; now down to 1.
Also, add a comment about *not* defining TARGET_FIXED_CONDITION_CODE_REGS. --- gcc/config/cris/cris.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/gcc/config/cris/cris.c b/gcc/config/cris/cris.c index 9fdabe2ac..eecda8384 100644 --- a/gcc/config/cris/cris.c +++ b/gcc/config/cris/cris.c @@ -219,6 +219,16 @@ int cris_cpu_version = CRIS_DEFAULT_CPU_VERSION; #undef TARGET_PREFERRED_RELOAD_CLASS #define TARGET_PREFERRED_RELOAD_CLASS cris_preferred_reload_class +/* We don't define TARGET_FIXED_CONDITION_CODE_REGS, as at the time of + this writing, it has an effect only on pre-reload CSE and when + scheduling (and for "macro fusion" at that). Neither applies for + CRIS so don't waste compilation cycles on enabling a pass that does + nothing. Beware of changes to its usage; it may make sense to enable + "later". */ + +#undef TARGET_FLAGS_REGNUM +#define TARGET_FLAGS_REGNUM CRIS_CC0_REGNUM + #undef TARGET_REGISTER_MOVE_COST #define TARGET_REGISTER_MOVE_COST cris_register_move_cost #undef TARGET_MEMORY_MOVE_COST -- 2.11.0 brgds, H-P
