https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86640
--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> --- Or even diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index cf12ace..f5eece4 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -30046,7 +30046,6 @@ arm_block_set_aligned_vect (rtx dstbase, rtx dst, addr, mem; rtx val_vec, reg; machine_mode mode; - unsigned HOST_WIDE_INT v = value; unsigned int offset = 0; gcc_assert ((align & 0x3) == 0); @@ -30065,10 +30064,8 @@ arm_block_set_aligned_vect (rtx dstbase, dst = copy_addr_to_reg (XEXP (dstbase, 0)); - v = sext_hwi (v, BITS_PER_WORD); - reg = gen_reg_rtx (mode); - val_vec = gen_const_vec_duplicate (mode, GEN_INT (v)); + val_vec = gen_const_vec_duplicate (mode, gen_int_mode (value, QImode)); /* Emit instruction loading the constant value. */ emit_move_insn (reg, val_vec);