[gcc(refs/users/meissner/heads/work205)] Add -mcpu=future tests.

[Michael Meissner]

https://gcc.gnu.org/g:f6a9da87bba8ea9a20a22ae33a59a88c0b2a591c

commit f6a9da87bba8ea9a20a22ae33a59a88c0b2a591c
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Mon May 19 16:19:20 2025 -0400

    Add -mcpu=future tests.
    
    This patch adds simple tests for -mcpu=future.
    
    2025-05-19  Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/testsuite/
    
            * gcc.target/powerpc/future-1.c: New test.
            * gcc.target/powerpc/future-2.c: Likewise.

Diff:
---
 gcc/testsuite/gcc.target/powerpc/future-1.c | 13 +++++++++++++
 gcc/testsuite/gcc.target/powerpc/future-2.c | 24 ++++++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/gcc/testsuite/gcc.target/powerpc/future-1.c b/gcc/testsuite/gcc.target/powerpc/future-1.c
new file mode 100644
index 000000000000..f1b940d7bebf
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/future-1.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-mdejagnu-cpu=future -O2" } */
+
+/* Basic check to see if the compiler supports -mcpu=future and if it defines
+   _ARCH_PWR11.  */
+
+#ifndef _ARCH_FUTURE
+#error "-mcpu=future is not supported"
+#endif
+
+void foo (void)
+{
+}
diff --git a/gcc/testsuite/gcc.target/powerpc/future-2.c b/gcc/testsuite/gcc.target/powerpc/future-2.c
new file mode 100644
index 000000000000..5552cefa3c2e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/future-2.c
@@ -0,0 +1,24 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+/* Check if we can set the future target via a target attribute.  */
+
+__attribute__((__target__("cpu=power9")))
+void foo_p9 (void)
+{
+}
+
+__attribute__((__target__("cpu=power10")))
+void foo_p10 (void)
+{
+}
+
+__attribute__((__target__("cpu=power11")))
+void foo_p11 (void)
+{
+}
+
+__attribute__((__target__("cpu=future")))
+void foo_future (void)
+{
+}