aarch64: enable mixed-types for aarch64 simdclones

This patch enables the use of mixed-types for simd clones for AArch64, adds
aarch64 as a target_vect_simd_clones and corrects the way the simdlen is chosen
for non-specified simdlen clauses according to the 'Vector Function Application
Binary Interface Specification for AArch64'.

Additionally this patch also restricts combinations of simdlen and
return/argument types that map to vectors larger than 128 bits as we currently
do not have a way to represent these types in a way that is consistent
internally and externally.

gcc/ChangeLog:

	* config/aarch64/aarch64.cc (lane_size): New function.
	(aarch64_simd_clone_compute_vecsize_and_simdlen): Determine simdlen according to NDS rule
	and reject combination of simdlen and types that lead to vectors larger than 128bits.

gcc/testsuite/ChangeLog:

	* lib/target-supports.exp: Add aarch64 targets to vect_simd_clones.
	* c-c++-common/gomp/declare-variant-14.c: Adapt test for aarch64.
	* c-c++-common/gomp/pr60823-1.c: Likewise.
	* c-c++-common/gomp/pr60823-2.c: Likewise.
	* c-c++-common/gomp/pr60823-3.c: Likewise.
	* g++.dg/gomp/attrs-10.C: Likewise.
	* g++.dg/gomp/declare-simd-1.C: Likewise.
	* g++.dg/gomp/declare-simd-3.C: Likewise.
	* g++.dg/gomp/declare-simd-4.C: Likewise.
	* g++.dg/gomp/declare-simd-7.C: Likewise.
	* g++.dg/gomp/declare-simd-8.C: Likewise.
	* g++.dg/gomp/pr88182.C: Likewise.
	* gcc.dg/declare-simd.c: Likewise.
	* gcc.dg/gomp/declare-simd-1.c: Likewise.
	* gcc.dg/gomp/declare-simd-3.c: Likewise.
	* gcc.dg/gomp/pr87887-1.c: Likewise.
	* gcc.dg/gomp/pr87895-1.c: Likewise.
	* gcc.dg/gomp/pr89246-1.c: Likewise.
	* gcc.dg/gomp/pr99542.c: Likewise.
	* gcc.dg/gomp/simd-clones-2.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-1.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-2.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-4.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-5.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-6.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-7.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-8.c: Likewise.
	* gfortran.dg/gomp/declare-simd-2.f90: Likewise.
	* gfortran.dg/gomp/declare-simd-coarray-lib.f90: Likewise.
	* gfortran.dg/gomp/declare-variant-14.f90: Likewise.
	* gfortran.dg/gomp/pr79154-1.f90: Likewise.
	* gfortran.dg/gomp/pr83977.f90: Likewise.

libgomp/ChangeLog:

	* testsuite/libgomp.c/declare-variant-1.c: Adapt test for aarch64.
	* testsuite/libgomp.fortran/declare-simd-1.f90: Likewise.

4 files changed, 17 insertions, 6 deletions

diff --git a/gcc/testsuite/c-c++-common/gomp/declare-variant-14.c b/gcc/testsuite/c-c++-common/gomp/declare-variant-14.c
index cdb0bb3..e366889 100644
--- a/gcc/testsuite/c-c++-common/gomp/declare-variant-14.c
+++ b/gcc/testsuite/c-c++-common/gomp/declare-variant-14.c
@@ -15,13 +15,15 @@ int
 test1 (int x)
 {
   /* At gimplification time, we can't decide yet which function to call.  */
-  /* { dg-final { scan-tree-dump-times "f04 \\\(x" 2 "gimple" } } */
+  /* { dg-final { scan-tree-dump-times "f04 \\\(x" 2 "gimple" { target { !aarch64*-*-* } } } } */
   /* After simd clones are created, the original non-clone test1 shall
      call f03 (score 6), the sse2/avx/avx2 clones too, but avx512f clones
      shall call f01 with score 8.  */
   /* { dg-final { scan-tree-dump-not "f04 \\\(x" "optimized" } } */
-  /* { dg-final { scan-tree-dump-times "f03 \\\(x" 14 "optimized" } } */
-  /* { dg-final { scan-tree-dump-times "f01 \\\(x" 4 "optimized" } } */
+  /* { dg-final { scan-tree-dump-times "f03 \\\(x" 14 "optimized" { target { !aarch64*-*-* } } } } */
+  /* { dg-final { scan-tree-dump-times "f03 \\\(x" 10 "optimized" { target { aarch64*-*-* } } } } */
+  /* { dg-final { scan-tree-dump-times "f01 \\\(x" 4 "optimized" { target { !aarch64*-*-* } } } } */
+  /* { dg-final { scan-tree-dump-times "f01 \\\(x" 0 "optimized" { target { aarch64*-*-* } } } } */
   int a = f04 (x);
   int b = f04 (x);
   return a + b;
diff --git a/gcc/testsuite/c-c++-common/gomp/pr60823-1.c b/gcc/testsuite/c-c++-common/gomp/pr60823-1.c
index 2cc44e82..9408c0f 100644
--- a/gcc/testsuite/c-c++-common/gomp/pr60823-1.c
+++ b/gcc/testsuite/c-c++-common/gomp/pr60823-1.c
@@ -2,7 +2,11 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -fopenmp-simd" } */
 
+#ifdef __aarch64__
+#pragma omp declare simd simdlen(2) notinbranch
+#else
 #pragma omp declare simd simdlen(4) notinbranch
+#endif
 int
 foo (const double c1, const double c2)
 {
@@ -17,4 +21,3 @@ foo (const double c1, const double c2)
     }
   return res;
 }
-/* { dg-warning "GCC does not currently support mixed size types for 'simd' functions" "" { target aarch64*-*-* } .-13 } */
diff --git a/gcc/testsuite/c-c++-common/gomp/pr60823-2.c b/gcc/testsuite/c-c++-common/gomp/pr60823-2.c
index 4c87620..e402b5a 100644
--- a/gcc/testsuite/c-c++-common/gomp/pr60823-2.c
+++ b/gcc/testsuite/c-c++-common/gomp/pr60823-2.c
@@ -3,7 +3,11 @@
 /* { dg-require-effective-target vect_simd_clones } */
 /* { dg-options "-O2 -fopenmp-simd" } */
 
+#ifdef __aarch64__
+#pragma omp declare simd simdlen(2) notinbranch
+#else
 #pragma omp declare simd simdlen(4) notinbranch
+#endif
 __attribute__((noinline)) int
 foo (double c1, double c2)
 {
diff --git a/gcc/testsuite/c-c++-common/gomp/pr60823-3.c b/gcc/testsuite/c-c++-common/gomp/pr60823-3.c
index 56ad50c..44e02b6 100644
--- a/gcc/testsuite/c-c++-common/gomp/pr60823-3.c
+++ b/gcc/testsuite/c-c++-common/gomp/pr60823-3.c
@@ -9,8 +9,11 @@ void bar (char *, double *);
 struct S { char c[sizeof (double)]; };
 void baz (struct S, struct S);
 union U { struct S s; double d; };
-
+#ifdef __aarch64__
+#pragma omp declare simd simdlen(2) notinbranch
+#else
 #pragma omp declare simd simdlen(4) notinbranch
+#endif
 __attribute__((noinline)) int
 foo (double c1, double c2)
 {
@@ -28,6 +31,5 @@ foo (double c1, double c2)
   baz (*(struct S *)&c1, *(struct S *)&c2);
   return c1 + c2 + ((struct S *)&c1)->c[1];
 }
-/* { dg-warning "GCC does not currently support mixed size types for 'simd' functions" "" { target aarch64*-*-* } .-16 } */
 
 #endif