[AARCH64] Add missing entries in iterator vwcore

[Kugan]

Hi,

In "aarch64_get_lane<mode>" operand 0 is VEL, so  for %<vwcore>0,
iterator vwcore should (?) support all the modes in VEL.

Ran into following error with a local patch for an existing test case.
However it can also be reproduced with the attached test case.

fnction ‘fn1’:
t.c:25:1: internal compiler error: output_operand: invalid %-code
 }
 ^
0x8198fb output_operand_lossage(char const*, ...)
        ../../base/gcc/final.c:3417
0x81a45b output_asm_insn(char const*, rtx_def**)
        ../../base/gcc/final.c:3782
0x81b9d3 output_asm_insn(char const*, rtx_def**)
        ../../base/gcc/final.c:2364
0x81b9d3 final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
        ../../base/gcc/final.c:3029
0x81be2b final(rtx_insn*, _IO_FILE*, int)
        ../../base/gcc/final.c:2058
0x81c6e7 rest_of_handle_final
        ../../base/gcc/final.c:4449
0x81c6e7 execute
        ../../base/gcc/final.c:4524


Attached patch fixes this. Bootstrapped and regression tested for
aarch64-none-linux-gnu with no new regression. Is this OK for trunk?

Thanks,
Kugan

gcc/ChangeLog:

2015-10-02  Kugan Vivekanandarajah  <kug...@linaro.org>

        * config/aarch64/iterators.md: Add missing core element mode for
         mode.

gcc/testsuite/ChangeLog:

2015-10-02  Kugan Vivekanandarajah  <kug...@linaro.org>

        * gcc.target/aarch64/foo.c: New test.


diff --git a/gcc/config/aarch64/iterators.md b/gcc/config/aarch64/iterators.md
index 38c5a24..e49abd5 100644
--- a/gcc/config/aarch64/iterators.md
+++ b/gcc/config/aarch64/iterators.md
@@ -537,8 +537,11 @@
                           (V4HI "w") (V8HI "w")
                           (V2SI "w") (V4SI "w")
                           (DI   "x") (V2DI "x")
+                          (V4HF "w") (V8HF "w")
                           (V2SF "w") (V4SF "w")
-                          (V2DF "x")])
+                          (V2DF "x") (SI   "x")
+                          (HI   "x") (QI   "x")])
+
 
 ;; Double vector types for ALLX.
 (define_mode_attr Vallxd [(QI "8b") (HI "4h") (SI "2s")])
diff --git a/gcc/testsuite/gcc.target/aarch64/foo.c 
b/gcc/testsuite/gcc.target/aarch64/foo.c
index e69de29..77f161e 100644
--- a/gcc/testsuite/gcc.target/aarch64/foo.c
+++ b/gcc/testsuite/gcc.target/aarch64/foo.c
@@ -0,0 +1,25 @@
+
+/* { dg-do compile } */
+/* { dg-options "-O3" } */
+
+void fn2 ();
+
+typedef __Float16x4_t float16x4_t;
+__fp16 result_float16x4[1];
+float16x4_t exec_vst1_lane_vector_float16x4, exec_vst1_lane___trans_tmp_1;
+
+void fn1 ()
+{
+  exec_vst1_lane_vector_float16x4 = exec_vst1_lane___trans_tmp_1;
+  __fp16 *__a = result_float16x4;
+  float16x4_t __b = exec_vst1_lane___trans_tmp_1;
+  int __lane = 0;
+  *__a = ({ __b[__lane]; });
+  union {
+      short i;
+      __fp16 f;
+  } tmp_res;
+  tmp_res.f = result_float16x4[0];
+  if (tmp_res.i)
+    fn2();
+}