S/390: Change 2-byte NOPs

The following patch changes "nopr %r7" to "nopr %r0" which is
advantageous from a hardware perspective. It will only be emitted for
hotpatching and should not impact normal code.

gcc/ChangeLog:

2017-03-06  Robin Dapp  <rdapp@linux.vnet.ibm.com>

	* config/s390/s390.c (s390_asm_output_function_label): Use nopr %r0.
	* config/s390/s390.md: Likewise.

gcc/testsuite/ChangeLog:

2017-03-06  Robin Dapp  <rdapp@linux.vnet.ibm.com>

	* gcc.target/s390/hotpatch-1.c: Check for nopr %r0.
	* gcc.target/s390/hotpatch-10.c: Likewise.
	* gcc.target/s390/hotpatch-11.c: Likewise.
	* gcc.target/s390/hotpatch-12.c: Likewise.
	* gcc.target/s390/hotpatch-13.c: Likewise.
	* gcc.target/s390/hotpatch-14.c: Likewise.
	* gcc.target/s390/hotpatch-15.c: Likewise.
	* gcc.target/s390/hotpatch-16.c: Likewise.
	* gcc.target/s390/hotpatch-17.c: Likewise.
	* gcc.target/s390/hotpatch-18.c: Likewise.
	* gcc.target/s390/hotpatch-19.c: Likewise.
	* gcc.target/s390/hotpatch-2.c: Likewise.
	* gcc.target/s390/hotpatch-26.c: Likewise.
	* gcc.target/s390/hotpatch-27.c: Likewise.
	* gcc.target/s390/hotpatch-28.c: Likewise.
	* gcc.target/s390/hotpatch-3.c: Likewise.
	* gcc.target/s390/hotpatch-4.c: Likewise.
	* gcc.target/s390/hotpatch-5.c: Likewise.
	* gcc.target/s390/hotpatch-6.c: Likewise.
	* gcc.target/s390/hotpatch-7.c: Likewise.
	* gcc.target/s390/hotpatch-8.c: Likewise.
	* gcc.target/s390/hotpatch-9.c: Likewise.

From-SVN: r245917

26 files changed, 55 insertions, 25 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 27a3472..8393f03 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-03-06  Robin Dapp  <rdapp@linux.vnet.ibm.com>
+
+	* config/s390/s390.c (s390_asm_output_function_label): Use nopr %r0.
+	* config/s390/s390.md: Likewise.
+
 2017-03-06  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/79812
diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c
index f98eee7..e8265c6 100644
--- a/gcc/config/s390/s390.c
+++ b/gcc/config/s390/s390.c
@@ -7218,11 +7218,11 @@ s390_asm_output_function_label (FILE *asm_out_file, const char *fname,
       /* Add a trampoline code area before the function label and initialize it
 	 with two-byte nop instructions.  This area can be overwritten with code
 	 that jumps to a patched version of the function.  */
-      asm_fprintf (asm_out_file, "\tnopr\t%%r7"
+      asm_fprintf (asm_out_file, "\tnopr\t%%r0"
 		   "\t# pre-label NOPs for hotpatch (%d halfwords)\n",
 		   hw_before);
       for (i = 1; i < hw_before; i++)
-	fputs ("\tnopr\t%r7\n", asm_out_file);
+	fputs ("\tnopr\t%r0\n", asm_out_file);
 
       /* Note:  The function label must be aligned so that (a) the bytes of the
 	 following nop do not cross a cacheline boundary, and (b) a jump address
diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md
index 7d2659e..164a644 100644
--- a/gcc/config/s390/s390.md
+++ b/gcc/config/s390/s390.md
@@ -10371,7 +10371,7 @@
 (define_insn "nop_2_byte"
   [(unspec_volatile [(const_int 0)] UNSPECV_NOP_2_BYTE)]
   ""
-  "nopr\t%%r7"
+  "nopr\t%%r0"
   [(set_attr "op_type" "RR")])
 
 (define_insn "nop_4_byte"
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 43c19c3..a6efef5 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,28 @@
+2017-03-06  Robin Dapp  <rdapp@linux.vnet.ibm.com>
+
+	* gcc.target/s390/hotpatch-1.c: Check for nopr %r0.
+	* gcc.target/s390/hotpatch-10.c: Likewise.
+	* gcc.target/s390/hotpatch-11.c: Likewise.
+	* gcc.target/s390/hotpatch-12.c: Likewise.
+	* gcc.target/s390/hotpatch-13.c: Likewise.
+	* gcc.target/s390/hotpatch-14.c: Likewise.
+	* gcc.target/s390/hotpatch-15.c: Likewise.
+	* gcc.target/s390/hotpatch-16.c: Likewise.
+	* gcc.target/s390/hotpatch-17.c: Likewise.
+	* gcc.target/s390/hotpatch-18.c: Likewise.
+	* gcc.target/s390/hotpatch-19.c: Likewise.
+	* gcc.target/s390/hotpatch-2.c: Likewise.
+	* gcc.target/s390/hotpatch-26.c: Likewise.
+	* gcc.target/s390/hotpatch-27.c: Likewise.
+	* gcc.target/s390/hotpatch-28.c: Likewise.
+	* gcc.target/s390/hotpatch-3.c: Likewise.
+	* gcc.target/s390/hotpatch-4.c: Likewise.
+	* gcc.target/s390/hotpatch-5.c: Likewise.
+	* gcc.target/s390/hotpatch-6.c: Likewise.
+	* gcc.target/s390/hotpatch-7.c: Likewise.
+	* gcc.target/s390/hotpatch-8.c: Likewise.
+	* gcc.target/s390/hotpatch-9.c: Likewise.
+
 2017-03-06  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/64574
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-1.c b/gcc/testsuite/gcc.target/s390/hotpatch-1.c
index 55088b8..5f0f2e1 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-1.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-1.c
@@ -13,7 +13,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler-not "post-label NOPs" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler-not "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-10.c b/gcc/testsuite/gcc.target/s390/hotpatch-10.c
index d2cb9a2..2308d33 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-10.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-10.c
@@ -13,7 +13,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler-not "post-label NOPs" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler-not "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-11.c b/gcc/testsuite/gcc.target/s390/hotpatch-11.c
index cabb9d26..56b3596 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-11.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-11.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label.*(1 halfwords)" } } */
 /* { dg-final { scan-assembler-not "post-label NOPs" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-12.c b/gcc/testsuite/gcc.target/s390/hotpatch-12.c
index fc9adc3..8a91c1b 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-12.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-12.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label.*(999 halfwords)" } } */
 /* { dg-final { scan-assembler-not "post-label NOPs" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 999 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 999 } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-13.c b/gcc/testsuite/gcc.target/s390/hotpatch-13.c
index b25fbd3..70fab74 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-13.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-13.c
@@ -14,7 +14,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label.*(1 halfwords)" } } */
 /* { dg-final { scan-assembler-not "post-label NOPs" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-14.c b/gcc/testsuite/gcc.target/s390/hotpatch-14.c
index c387d6b..389bf42 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-14.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-14.c
@@ -14,7 +14,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler-not "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-15.c b/gcc/testsuite/gcc.target/s390/hotpatch-15.c
index 410106b..0b10fb1 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-15.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-15.c
@@ -14,6 +14,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label.*(1 halfwords)" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-16.c b/gcc/testsuite/gcc.target/s390/hotpatch-16.c
index fa06fff..2fcdf1c 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-16.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-16.c
@@ -14,6 +14,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label.*(1 halfwords)" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-17.c b/gcc/testsuite/gcc.target/s390/hotpatch-17.c
index 3ef7d69..299f825 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-17.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-17.c
@@ -14,7 +14,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler-not "post-label NOPs" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler-not "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-18.c b/gcc/testsuite/gcc.target/s390/hotpatch-18.c
index c93af7f..fd44d11 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-18.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-18.c
@@ -13,7 +13,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler-not "post-label NOPs" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler-not "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-19.c b/gcc/testsuite/gcc.target/s390/hotpatch-19.c
index bb8a137..899e000 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-19.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-19.c
@@ -19,6 +19,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label.*(1 halfwords)" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-2.c b/gcc/testsuite/gcc.target/s390/hotpatch-2.c
index 2a2665e..99fe911 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-2.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-2.c
@@ -13,7 +13,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(1 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nopr\t" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler-not "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-26.c b/gcc/testsuite/gcc.target/s390/hotpatch-26.c
index eb95c26..ba2ef18 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-26.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-26.c
@@ -11,7 +11,7 @@ __attribute__ ((noreturn)) void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-27.c b/gcc/testsuite/gcc.target/s390/hotpatch-27.c
index cdbd4ca..af1d276 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-27.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-27.c
@@ -11,7 +11,7 @@ __attribute__ ((noreturn)) void hp3(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-28.c b/gcc/testsuite/gcc.target/s390/hotpatch-28.c
index 9922daa..f8770c4 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-28.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-28.c
@@ -12,7 +12,7 @@ void hp1 (volatile unsigned int *i)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-3.c b/gcc/testsuite/gcc.target/s390/hotpatch-3.c
index 6718591..20f43c6b 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-3.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-3.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(2 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-4.c b/gcc/testsuite/gcc.target/s390/hotpatch-4.c
index b770d4b..32a3c03 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-4.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-4.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(3 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*brcl\t0, 0" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-times "brcl\t0, 0" 1 } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-5.c b/gcc/testsuite/gcc.target/s390/hotpatch-5.c
index f1dcd89..72ee5a3 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-5.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-5.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(4 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*brcl\t0, 0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-times "brcl\t0, 0" 1 } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-6.c b/gcc/testsuite/gcc.target/s390/hotpatch-6.c
index 6203a72b..1e1d0e6 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-6.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-6.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(5 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*brcl\t0, 0" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-times "brcl\t0, 0" 1 } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-7.c b/gcc/testsuite/gcc.target/s390/hotpatch-7.c
index e201ae9..3f60e61 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-7.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-7.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(6 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*brcl\t0, 0" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-not "nop\t0" } } */
 /* { dg-final { scan-assembler-times "brcl\t0, 0" 2 } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-8.c b/gcc/testsuite/gcc.target/s390/hotpatch-8.c
index c5b71a5..012a4eb 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-8.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-8.c
@@ -13,7 +13,7 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(3 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-times "nopr\t%r7" 1 } } */
+/* { dg-final { scan-assembler-times "nopr\t%r0" 1 } } */
 /* { dg-final { scan-assembler-times "nop\t0" 1 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */
 /* { dg-final { scan-assembler-not "alignment for hotpatch" } } */
diff --git a/gcc/testsuite/gcc.target/s390/hotpatch-9.c b/gcc/testsuite/gcc.target/s390/hotpatch-9.c
index 9ccc8fd..b7d557e 100644
--- a/gcc/testsuite/gcc.target/s390/hotpatch-9.c
+++ b/gcc/testsuite/gcc.target/s390/hotpatch-9.c
@@ -13,6 +13,6 @@ void hp1(void)
 /* Check number of occurences of certain instructions.  */
 /* { dg-final { scan-assembler-not "pre-label NOPs" } } */
 /* { dg-final { scan-assembler "^\[^.\].*:\n.*post-label.*(4 halfwords).*\n\(\(.L.*:\n\)\|\(\[\[:space:\]\]*.cfi_.*\n\)\)*\[\[:space:\]\]*nop\t0" } } */
-/* { dg-final { scan-assembler-not "nopr\t%r7" } } */
+/* { dg-final { scan-assembler-not "nopr\t%r0" } } */
 /* { dg-final { scan-assembler-times "nop\t0" 2 } } */
 /* { dg-final { scan-assembler-not "brcl\t0, 0" } } */