[Bug middle-end/86640] [8/9 regression] ICE in combine

[segher at gcc dot gnu.org]

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);