[gcc r13-6402] testsuite: Handle "packed" targets in c-c++-common/auto-init-7.c and -8.c

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

https://gcc.gnu.org/g:854a268dccd7976bfc17584be8f9b2afa6c51fa0

commit r13-6402-g854a268dccd7976bfc17584be8f9b2afa6c51fa0
Author: Hans-Peter Nilsson <hp@axis.com>
Date:   Wed Feb 15 20:11:58 2023 +0100

    testsuite: Handle "packed" targets in c-c++-common/auto-init-7.c and -8.c
    
    Looks like there's a failed assumption that
    sizeof (union U { char u1[5]; int u2; float u3; }) == 8.
    However, for "packed" targets like cris-elf, it's 5.
    
    These two tests have always failed for cris-elf.  I see from
    https://gcc.gnu.org/pipermail/gcc-testresults/2023-February/777912.html
    that they fail on pru-elf too, but I don't know if the cause
    (and/or remedy) is the same.
    
    IMHO this is preferred over the alternative; splitting up
    that last line into two lines, like:
    /* { dg-final { scan-tree-dump "temp4 = \
     .DEFERRED_INIT \\(8, 2, \&\"temp4\"" "gimple" { target { ! default_packed } } } } */
    /* { dg-final { scan-tree-dump "temp4 = \
     .DEFERRED_INIT \\(5, 2, \&\"temp4\"" "gimple" { target default_packed } } } */
    
    gcc/testsuite:
            * c-c++-common/auto-init-7.c, c-c++-common/auto-init-8.c: Also
            match targets where sizeof (union U) == 5, like "packed" targets.

Diff:
---
 gcc/testsuite/c-c++-common/auto-init-7.c | 2 +-
 gcc/testsuite/c-c++-common/auto-init-8.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/c-c++-common/auto-init-7.c b/gcc/testsuite/c-c++-common/auto-init-7.c
index b44dd5e68ed..dd48d691596 100644
--- a/gcc/testsuite/c-c++-common/auto-init-7.c
+++ b/gcc/testsuite/c-c++-common/auto-init-7.c
@@ -32,4 +32,4 @@ double foo()
 /* { dg-final { scan-tree-dump "temp1 = .DEFERRED_INIT \\(12, 2, \&\"temp1\"" "gimple" } } */
 /* { dg-final { scan-tree-dump "temp2 = .DEFERRED_INIT \\(24, 2, \&\"temp2\"" "gimple" } } */
 /* { dg-final { scan-tree-dump "temp3 = .DEFERRED_INIT \\(28, 2, \&\"temp3\"" "gimple" } } */
-/* { dg-final { scan-tree-dump "temp4 = .DEFERRED_INIT \\(8, 2, \&\"temp4\"" "gimple" } } */
+/* { dg-final { scan-tree-dump "temp4 = .DEFERRED_INIT \\((8|5), 2, \&\"temp4\"" "gimple" } } */
diff --git a/gcc/testsuite/c-c++-common/auto-init-8.c b/gcc/testsuite/c-c++-common/auto-init-8.c
index 739ac028931..863f2ba87d7 100644
--- a/gcc/testsuite/c-c++-common/auto-init-8.c
+++ b/gcc/testsuite/c-c++-common/auto-init-8.c
@@ -32,4 +32,4 @@ double foo()
 /* { dg-final { scan-tree-dump "temp1 = .DEFERRED_INIT \\(12, 1, \&\"temp1\"" "gimple" } } */
 /* { dg-final { scan-tree-dump "temp2 = .DEFERRED_INIT \\(24, 1, \&\"temp2\"" "gimple" } } */
 /* { dg-final { scan-tree-dump "temp3 = .DEFERRED_INIT \\(28, 1, \&\"temp3\"" "gimple" } } */
-/* { dg-final { scan-tree-dump "temp4 = .DEFERRED_INIT \\(8, 1, \&\"temp4\"" "gimple" } } */
+/* { dg-final { scan-tree-dump "temp4 = .DEFERRED_INIT \\((8|5), 1, \&\"temp4\"" "gimple" } } */