[gcc r13-1340] testsuite/ix86: SSE2 is a prereq to _Float16 use

[gcc r13-1340] testsuite/ix86: SSE2 is a prereq to _Float16 use

[Jan Beulich]

https://gcc.gnu.org/g:d42c1598e52ec0a33fbcc4efa39f4c299d09a3fc

commit r13-1340-gd42c1598e52ec0a33fbcc4efa39f4c299d09a3fc
Author: Jan Beulich <jbeulich@suse.com>
Date:   Wed Jun 29 10:27:22 2022 +0200

    testsuite/ix86: SSE2 is a prereq to _Float16 use
    
    When enabling AVX512FP via attribute or pragma, the _Float16 type would
    remain unavailable when at initialization time SSE2 wouldn't be seen as
    available for use. While this may hint at a wider underlying issue (like
    the feature, the type may want providing dynamically, albeit this may be
    challenging in particular for functions returning _Float16 yet having
    the attribute specified after their return type), for now simply make
    SSE2 available when targeting ix86.
    
    gcc/testsuite/
    
            * gcc.target/i386/avx512fp16-reduce-op-2.c: Force SSE2 for i?86.
            * gcc.target/i386/pr99464.c: Likewise.

Diff:
---
 gcc/testsuite/gcc.target/i386/avx512fp16-reduce-op-2.c | 1 +
 gcc/testsuite/gcc.target/i386/pr99464.c                | 1 +
 2 files changed, 2 insertions(+)

diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-reduce-op-2.c b/gcc/testsuite/gcc.target/i386/avx512fp16-reduce-op-2.c
index 593340e4afa..72e4a814a76 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16-reduce-op-2.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-reduce-op-2.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -mprefer-vector-width=512 -fdump-tree-optimized" } */
+/* { dg-additional-options "-msse2" { target i?86-*-* } } */
 
 /* { dg-final { scan-tree-dump-times "\.REDUC_PLUS" 3 "optimized" } } */
 /* { dg-final { scan-tree-dump-times "\.REDUC_MIN" 3 "optimized" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pr99464.c b/gcc/testsuite/gcc.target/i386/pr99464.c
index 98dd938973e..3c1ac6f9a6c 100644
--- a/gcc/testsuite/gcc.target/i386/pr99464.c
+++ b/gcc/testsuite/gcc.target/i386/pr99464.c
@@ -1,6 +1,7 @@
 /* PR target/99464 */
 /* { dg-do compile } */
 /* { dg-options "-O2" } */
+/* { dg-additional-options "-msse2" { target i?86-*-* } } */
 
 #pragma GCC target("arch=cannonlake")