[gcc r13-6434] testsuite: Tweak gcc.dg/attr-aligned.c for CRIS

[Hans-Peter Nilsson <hp@gcc.gnu.org>]

https://gcc.gnu.org/g:dc1be3eb33c7f37ac45ad0ccf5be063134a513be

commit r13-6434-gdc1be3eb33c7f37ac45ad0ccf5be063134a513be
Author: Hans-Peter Nilsson <hp@axis.com>
Date:   Thu Feb 16 20:21:50 2023 +0100

    testsuite: Tweak gcc.dg/attr-aligned.c for CRIS
    
    tm.texi says for BIGGEST_ALIGNMENT (from which
    __BIGGEST_ALIGNMENT__ is derived): "Biggest alignment that
    any data type can require on this machine, in bits."
    
    That is, using that value might be too strict for alignment
    of *functions* and CRIS requires at least 16-bit alignment
    for functions.  But, one purpose of the test is to test that
    alignment can be set to a large but valid value, so pick
    512, which has some use as a historically required alignment
    for certain I/O descriptors.
    
            * gcc.dg/attr-aligned.c: Adjust comment for ALIGN_MAX_STATIC.
            (ALIGN_MAX_STATIC): Set to 512 for CRIS.

Diff:
---
 gcc/testsuite/gcc.dg/attr-aligned.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/attr-aligned.c b/gcc/testsuite/gcc.dg/attr-aligned.c
index 887bdd0f379..4f0c885dc81 100644
--- a/gcc/testsuite/gcc.dg/attr-aligned.c
+++ b/gcc/testsuite/gcc.dg/attr-aligned.c
@@ -18,6 +18,10 @@
 # else
 #   define ALIGN_MAX_STATIC      ALIGN_MAX_HARD
 # endif
+#elif __CRIS__
+/* __BIGGEST_ALIGNMENT__ doesn't cover functions (16 bits for CRIS). */
+#  define ALIGN_MAX_STATIC      512
+#  define ALIGN_TOO_BIG_OFILE   (ALIGN_MAX_HARD << 1)
 #elif pdp11
 #  define ALIGN_MAX_STATIC      2
 /* Work around a pdp11 ICE (see PR target/87821).  */
@@ -29,7 +33,9 @@
 /* Is this processor- or operating-system specific?  */
 #  define ALIGN_MAX_STATIC      ALIGN_MAX_HARD
 #else
-   /* Guaranteed to be accepted regardless of the target.  */
+   /* Guaranteed to be accepted regardless of the target for objects.
+      This might not be true for alignment of functions though, so
+      may need to be set to a target-specific value above.  */
 #  define ALIGN_MAX_STATIC      __BIGGEST_ALIGNMENT__
    /* Guaranteed to be rejected regardless of the target.  */
 #  define ALIGN_TOO_BIG_OFILE   (ALIGN_MAX_HARD << 1)