[gcc r13-2253] x86: Handle V16BF in ix86_avx256_split_vector_move_misalign

[H.J. Lu <hjl@gcc.gnu.org>]

https://gcc.gnu.org/g:60d1d296b42b22b08d4eaa38bea02100c07261ac

commit r13-2253-g60d1d296b42b22b08d4eaa38bea02100c07261ac
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Aug 26 10:26:06 2022 -0700

    x86: Handle V16BF in ix86_avx256_split_vector_move_misalign
    
    Handle E_V16BFmode in ix86_avx256_split_vector_move_misalign and add
    V16BF to V_256H iterator.
    
    gcc/
    
            PR target/106748
            * config/i386/i386-expand.cc
            (ix86_avx256_split_vector_move_misalign): Handle E_V16BFmode.
            * config/i386/sse.md (V_256H): Add V16BF.
    
    gcc/testsuite/
    
            PR target/106748
            * gcc.target/i386/pr106748.c: New test.

Diff:
---
 gcc/config/i386/i386-expand.cc           |  4 ++++
 gcc/config/i386/sse.md                   |  4 ++--
 gcc/testsuite/gcc.target/i386/pr106748.c | 20 ++++++++++++++++++++
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc
index 4b216308a18..836ebc82d67 100644
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -745,6 +745,10 @@ ix86_avx256_split_vector_move_misalign (rtx op0, rtx op1)
       extract = gen_avx_vextractf128v32qi;
       mode = V16QImode;
       break;
+    case E_V16BFmode:
+      extract = gen_avx_vextractf128v16bf;
+      mode = V8BFmode;
+      break;
     case E_V16HFmode:
       extract = gen_avx_vextractf128v16hf;
       mode = V8HFmode;
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index e6ab3c92dcf..259048481b6 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -297,9 +297,9 @@
 (define_mode_iterator V_256
   [V32QI V16HI V8SI V4DI V8SF V4DF])
 
-;; All 256bit vector modes including HF vector mode
+;; All 256bit vector modes including HF/BF vector modes
 (define_mode_iterator V_256H
-  [V32QI V16HI V8SI V4DI V8SF V4DF V16HF])
+  [V32QI V16HI V8SI V4DI V8SF V4DF V16HF V16BF])
 
 ;; All 128bit and 256bit vector modes
 (define_mode_iterator V_128_256
diff --git a/gcc/testsuite/gcc.target/i386/pr106748.c b/gcc/testsuite/gcc.target/i386/pr106748.c
new file mode 100644
index 00000000000..6388b1deb23
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr106748.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O0 -mavx256-split-unaligned-store -mavx -fpack-struct" } */
+
+typedef __bf16 __m256bf16 __attribute__((__vector_size__(32)));
+typedef struct {
+  __m256bf16 _m256bf16[1];
+} YMM_T;
+
+struct {
+  YMM_T ymm0;
+} fregs;
+
+__m256bf16 do_test_u3b_0_0;
+int do_test_i;
+
+void
+do_test()
+{
+  (&fregs.ymm0)[do_test_i]._m256bf16[0] = do_test_u3b_0_0;
+}