diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 57099cb..6ead410 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -24906,14 +24906,16 @@ arm_hard_regno_mode_ok (unsigned int regno, machine_mode mode) /* We allow almost any value to be stored in the general registers. Restrict doubleword quantities to even register pairs in ARM state - so that we can use ldrd. Do not allow very large Neon structure - opaque modes in general registers; they would use too many. */ + so that we can use ldrd. The same restriction applies for MVE + in order to support Armv8.1-M Mainline instructions. + Do not allow very large Neon structure opaque modes in general + registers; they would use too many. */ if (regno <= LAST_ARM_REGNUM) { if (ARM_NUM_REGS (mode) > 4) return false; - if (TARGET_THUMB2) + if (TARGET_THUMB2 && !TARGET_HAVE_MVE) return true; return !(TARGET_LDRD && GET_MODE_SIZE (mode) > 4 && (regno & 1) != 0); |