[gcc r12-5137] [COMMITTED] aarch64: [PR103170] Fix aarch64_simd_dup<mode>

[gcc r12-5137] [COMMITTED] aarch64: [PR103170] Fix aarch64_simd_dup<mode>

[Andrew Pinski]

https://gcc.gnu.org/g:c744ae0897957def0cd798399ef8ed6dc0d23811

commit r12-5137-gc744ae0897957def0cd798399ef8ed6dc0d23811
Author: Andrew Pinski <apinski@marvell.com>
Date:   Wed Nov 10 18:37:22 2021 +0000

    [COMMITTED] aarch64: [PR103170] Fix aarch64_simd_dup<mode>
    
    The problem here is aarch64_simd_dup<mode> use
    the vw iterator rather than vwcore iterator.  This causes
    problems for the V4SF and V2DF modes. I changed both of
    aarch64_simd_dup<mode> patterns to be consistent.
    
    Committed as obvious after a bootstrap/test on aarch64-linux-gnu.
    
            PR target/103170
    
    gcc/ChangeLog:
    
            * config/aarch64/aarch64-simd.md (aarch64_simd_dup<mode>):
            Use vwcore iterator for the r constraint output string.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.c-torture/compile/vector-dup-1.c: New test.

Diff:
---
 gcc/config/aarch64/aarch64-simd.md                 |  4 ++--
 gcc/testsuite/gcc.c-torture/compile/vector-dup-1.c | 15 +++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/gcc/config/aarch64/aarch64-simd.md b/gcc/config/aarch64/aarch64-simd.md
index 54d7ca4ba0a..1020cd9ee64 100644
--- a/gcc/config/aarch64/aarch64-simd.md
+++ b/gcc/config/aarch64/aarch64-simd.md
@@ -69,7 +69,7 @@
   "TARGET_SIMD"
   "@
    dup\\t%0.<Vtype>, %1.<Vetype>[0]
-   dup\\t%0.<Vtype>, %<vw>1"
+   dup\\t%0.<Vtype>, %<vwcore>1"
   [(set_attr "type" "neon_dup<q>, neon_from_gp<q>")]
 )
 
@@ -80,7 +80,7 @@
   "TARGET_SIMD"
   "@
    dup\\t%0.<Vtype>, %1.<Vetype>[0]
-   dup\\t%0.<Vtype>, %<vw>1"
+   dup\\t%0.<Vtype>, %<vwcore>1"
   [(set_attr "type" "neon_dup<q>, neon_from_gp<q>")]
 )
 
diff --git a/gcc/testsuite/gcc.c-torture/compile/vector-dup-1.c b/gcc/testsuite/gcc.c-torture/compile/vector-dup-1.c
new file mode 100644
index 00000000000..3475360462b
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/vector-dup-1.c
@@ -0,0 +1,15 @@
+/* { dg-additional-options "-fno-strict-aliasing" } */
+
+
+/* PR target/103170 */
+/* AARCH64 used to ICE on this for a typo in the string template. */
+#define vector __attribute__((vector_size(4*sizeof(float))))
+
+typedef vector float v4sf;
+
+v4sf f(int t)
+{
+  float tt = *(float*)&t;
+  asm("":"+r"(tt));
+  return (v4sf){tt,tt,tt,tt};
+}