[patch][committed]middle-end: remove subreg from test_output_operand_modifier_operand selftest [PR128620]

[Tamar Christina]

The selftest doesn't actually need the subreg and
on some targets where QI and HI are not tiable
the selftest ICEs.

Fix bootstrap for those targets by just not using
a subreg.

Bootstrapped Regtested on aarch64-none-linux-gnu,
arm-none-linux-gnueabihf, x86_64-pc-linux-gnu
-m32, -m64 and no issues.

Pushed as obvious (and it's a testcase)

Thanks,
Tamar

gcc/ChangeLog:

        PR middle-end/128620
        * final.cc (test_output_operand_modifier_operand): Remove subreg.

---

-- 

diff --git a/gcc/final.cc b/gcc/final.cc
index 
224f0835a266a93d0a49d5e54f0b83aa8fd7e3ee..1ca754146e47659cf4a0dee3eeaae37e2ae8267f
 100644
--- a/gcc/final.cc
+++ b/gcc/final.cc
@@ -4794,8 +4794,7 @@ test_referenced_operands ()
 static void
 test_output_operand_modifier_operand ()
 {
-  rtx operands[] = { GEN_INT (10),
-                    gen_lowpart_SUBREG (QImode, gen_rtx_REG (HImode, 0)) };
+  rtx operands[] = { GEN_INT (10), gen_rtx_REG (QImode, 0) };
   auto_vec<unsigned long, 2> opnums;
   opnums.safe_push (1);
   opnums.safe_push (0);