[gcc(refs/vendors/ARM/heads/gcs)] aarch64: Add non-local goto and jump tests for GCS

[Szabolcs Nagy <nsz@gcc.gnu.org>]

https://gcc.gnu.org/g:87217fd89a9bd595a58897bafc593a7e25051ee4

commit 87217fd89a9bd595a58897bafc593a7e25051ee4
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date:   Wed Jun 7 10:58:06 2023 +0100

    aarch64: Add non-local goto and jump tests for GCS
    
    These are scan asm tests only, relying on existing execution tests
    for runtime coverage.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/aarch64/gcs-nonlocal-1.c: New test.
            * gcc.target/aarch64/gcs-nonlocal-2.c: New test.

Diff:
---
 gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-1.c | 25 +++++++++++++++++++++++
 gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-2.c | 21 +++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-1.c b/gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-1.c
new file mode 100644
index 00000000000..821fab816f9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-1.c
@@ -0,0 +1,25 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mbranch-protection=gcs" } */
+/* { dg-final { scan-assembler-times "hint\\t40 // chkfeat x16" 2 } } */
+/* { dg-final { scan-assembler-times "mrs\\tx\[0-9\]+, s3_3_c2_c5_1 // gcspr_el0" 2 } } */
+/* { dg-final { scan-assembler-times "sysl\\txzr, #3, c7, c7, #1 // gcspopm" 1 } } */
+
+int bar1 (int);
+int bar2 (int);
+
+void foo (int cmd)
+{
+  __label__ start;
+  int x = 0;
+
+  void nonlocal_goto (void)
+  {
+    x++;
+    goto start;
+  }
+
+start:
+  while (bar1 (x))
+    if (bar2 (x))
+      nonlocal_goto ();
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-2.c b/gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-2.c
new file mode 100644
index 00000000000..63dbce36e1e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/gcs-nonlocal-2.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mbranch-protection=gcs" } */
+/* { dg-final { scan-assembler-times "hint\\t40 // chkfeat x16" 2 } } */
+/* { dg-final { scan-assembler-times "mrs\\tx\[0-9\]+, s3_3_c2_c5_1 // gcspr_el0" 2 } } */
+/* { dg-final { scan-assembler-times "sysl\\txzr, #3, c7, c7, #1 // gcspopm" 1 } } */
+
+void longj (void *buf)
+{
+  __builtin_longjmp (buf, 1);
+}
+
+void foo (void);
+void bar (void);
+
+void setj (void *buf)
+{
+  if (__builtin_setjmp (buf))
+    foo ();
+  else
+    bar ();
+}