diff --git a/gcc/testsuite/c-c++-common/zero-scratch-regs-10.c b/gcc/testsuite/c-c++-common/zero-scratch-regs-10.c
index bdaf8e7decbf31fe8c3fc8945b741e8e810271b7..3eea0fd864b541076bd73f4b71a3ad31fd3d5c55 100644
--- a/gcc/testsuite/c-c++-common/zero-scratch-regs-10.c
+++ b/gcc/testsuite/c-c++-common/zero-scratch-regs-10.c
@@ -1,4 +1,5 @@
 /* { dg-do run } */
+/* { dg-xfail-if "not implemented" { powerpc*-*-darwin* } } */
 /* { dg-options "-O2" } */
 
 #include <assert.h>
diff --git a/gcc/testsuite/c-c++-common/zero-scratch-regs-11.c b/gcc/testsuite/c-c++-common/zero-scratch-regs-11.c
index 7721e395e52bb3c169e51fd59c1363d1daca9e49..d1b1636657b14f2ae5b6924b3d7b72e6aa59f856 100644
--- a/gcc/testsuite/c-c++-common/zero-scratch-regs-11.c
+++ b/gcc/testsuite/c-c++-common/zero-scratch-regs-11.c
@@ -1,4 +1,5 @@
 /* { dg-do run } */
+/* { dg-xfail-if "not implemented" { powerpc*-*-darwin* } } */
 /* { dg-options "-O2 -fzero-call-used-regs=all" } */
 
 #include "zero-scratch-regs-10.c"
diff --git a/gcc/testsuite/c-c++-common/zero-scratch-regs-8.c b/gcc/testsuite/c-c++-common/zero-scratch-regs-8.c
index c1faaf0f43a501bc615b0aed8aee466b11ebca8e..48a4ab2c0028b7e36899e9a7410f4cc1246c5a96 100644
--- a/gcc/testsuite/c-c++-common/zero-scratch-regs-8.c
+++ b/gcc/testsuite/c-c++-common/zero-scratch-regs-8.c
@@ -1,4 +1,5 @@
 /* { dg-do run } */
+/* { dg-xfail-if "not implemented" { powerpc*-*-darwin* } } */
 /* { dg-options "-O2 -fzero-call-used-regs=all-arg" } */
 
 #include "zero-scratch-regs-1.c"
diff --git a/gcc/testsuite/c-c++-common/zero-scratch-regs-9.c b/gcc/testsuite/c-c++-common/zero-scratch-regs-9.c
index 3f14bac67c02d7e06771de2e3a663f7d56e65d4a..2a8c69bf2b2ac7f548ebc97adb2146810dacfa24 100644
--- a/gcc/testsuite/c-c++-common/zero-scratch-regs-9.c
+++ b/gcc/testsuite/c-c++-common/zero-scratch-regs-9.c
@@ -1,4 +1,5 @@
 /* { dg-do run } */
+/* { dg-xfail-if "not implemented" { powerpc*-*-darwin* } } */
 /* { dg-options "-O2 -fzero-call-used-regs=all" } */
 
 #include "zero-scratch-regs-1.c"