[gcc r16-38] Fix pr118947-1.c and pr78408-3.c on targets where 32 bytes memcpy uses a vector

[Andrew Pinski via Gcc-cvs]

https://gcc.gnu.org/g:52d7676cb4b998521c88691474ed2616226eaa73

commit r16-38-g52d7676cb4b998521c88691474ed2616226eaa73
Author: Andrew Pinski <quic_apin...@quicinc.com>
Date:   Fri Apr 18 20:28:40 2025 -0700

    Fix pr118947-1.c and pr78408-3.c on targets where 32 bytes memcpy uses a 
vector
    
    The problem here is on targets where a 32byte memcpy will use an integral 
(vector) type
    to do the copy and the code will be optimized a different way than 
expected. This changes
    the testcase instead to use a size of 1025 to make sure there is no target 
that will use an
    integral (vector) type for the memcpy and be optimized via the method that 
was just added.
    
    Pushed as obvious after a test run.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.dg/pr118947-1.c: Use 1025 as the size of the buf.
            * gcc.dg/pr78408-3.c: Likewise.
    
    Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>

Diff:
---
 gcc/testsuite/gcc.dg/pr118947-1.c | 4 ++--
 gcc/testsuite/gcc.dg/pr78408-3.c  | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/pr118947-1.c 
b/gcc/testsuite/gcc.dg/pr118947-1.c
index 70b7f800065c..8733e8d7f5c2 100644
--- a/gcc/testsuite/gcc.dg/pr118947-1.c
+++ b/gcc/testsuite/gcc.dg/pr118947-1.c
@@ -6,10 +6,10 @@
 void* aaa();
 void* bbb()
 {
-    char buf[32] = {};
+    char buf[1025] = {};
     /*  Tha call to aaa should not matter and clobber buf. */
     void* ret = aaa();
-    __builtin_memcpy(ret, buf, 32);
+    __builtin_memcpy(ret, buf, sizeof(buf));
     return ret;
 }
 
diff --git a/gcc/testsuite/gcc.dg/pr78408-3.c b/gcc/testsuite/gcc.dg/pr78408-3.c
index 3de90d023923..5ea545868ad9 100644
--- a/gcc/testsuite/gcc.dg/pr78408-3.c
+++ b/gcc/testsuite/gcc.dg/pr78408-3.c
@@ -7,8 +7,8 @@ void* aaa();
 void* bbb()
 {
     void* ret = aaa();
-    char buf[32] = {};
-    __builtin_memcpy(ret, buf, 32);
+    char buf[1025] = {};
+    __builtin_memcpy(ret, buf, sizeof(buf));
     return ret;
 }