https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100108
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dje at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |segher at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Indeed, several rs6000-cpus.def entries have MASK_ISEL:
RS6000_CPU ("8540", PROCESSOR_PPC8540, MASK_STRICT_ALIGN | MASK_ISEL)
RS6000_CPU ("8548", PROCESSOR_PPC8548, MASK_STRICT_ALIGN | MASK_ISEL)
RS6000_CPU ("e500mc", PROCESSOR_PPCE500MC, MASK_PPC_GFXOPT | MASK_ISEL)
RS6000_CPU ("e500mc64", PROCESSOR_PPCE500MC64,
MASK_POWERPC64 | MASK_PPC_GFXOPT | MASK_ISEL)
RS6000_CPU ("e5500", PROCESSOR_PPCE5500,
MASK_POWERPC64 | MASK_PPC_GFXOPT | MASK_ISEL)
RS6000_CPU ("e6500", PROCESSOR_PPCE6500, POWERPC_7400_MASK | MASK_POWERPC64
| MASK_MFCRF | MASK_ISEL)
So perhaps we should consider MASK_ISEL as power9 thing only for flags which
include power7-ish or later ISAs?
--- rs6000.c.jj4 2021-04-09 10:18:15.582266372 +0200
+++ rs6000.c 2021-04-19 16:30:07.033208577 +0200
@@ -5766,6 +5766,9 @@ rs6000_machine_from_flags (void)
/* Disable the flags that should never influence the .machine selection. */
flags &= ~(OPTION_MASK_PPC_GFXOPT | OPTION_MASK_PPC_GPOPT);
+ if ((flags & (ISA_3_1_MASKS_SERVER
+ & ~(ISA_2_5_MASKS_SERVER | MASK_ISEL))) == 0)
+ flags &= ~MASK_ISEL;
if ((flags & (ISA_3_1_MASKS_SERVER & ~ISA_3_0_MASKS_SERVER)) != 0)
return "power10";
