For z10 and newer inner loops are completely unrolled which means store
motion is not applied.  Reverting max-completely-peeled-insns to the
default value fixes these testcases.

Ok for mainline?

gcc/testsuite/ChangeLog:

        * gcc.dg/tree-ssa/pr83403-1.c: Revert
        max-completely-peeled-insns to the default value on IBM Z.
        * gcc.dg/tree-ssa/pr83403-2.c: Likewise.
---
 gcc/testsuite/gcc.dg/tree-ssa/pr83403-1.c | 1 +
 gcc/testsuite/gcc.dg/tree-ssa/pr83403-2.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr83403-1.c 
b/gcc/testsuite/gcc.dg/tree-ssa/pr83403-1.c
index 748375b03af..bfc703d1aa6 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/pr83403-1.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr83403-1.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O3 -funroll-loops -fdump-tree-lim2-details" } */
+/* { dg-additional-options "--param max-completely-peeled-insns=200" { target 
{ s390*-*-* } } } */
 
 #define TYPE unsigned int
 
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr83403-2.c 
b/gcc/testsuite/gcc.dg/tree-ssa/pr83403-2.c
index ca2e6bbd61c..9130d9bd583 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/pr83403-2.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr83403-2.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O3 -funroll-loops -fdump-tree-lim2-details" } */
+/* { dg-additional-options "--param max-completely-peeled-insns=200" { target 
{ s390*-*-* } } } */
 
 #define TYPE int
 
-- 
2.23.0

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