[PATCH 2/4] S390: Use 64bit instruction to check for copies of > 1MB with mvcle.

[Stefan Liebler]

The __memcpy_default variant on s390 64bit calculates the number of
256byte blocks in a 64bit register and checks, if they exceed 1MB
to jump to mvcle. Otherwise a mvc-loop is used. The compare-instruction
only checks a 32bit value.
This patch uses a 64bit compare.

ChangeLog:

	* sysdeps/s390/s390-64/memcpy.S (memcpy):
	Use cghi instead of chi to compare 64bit value.
---
 sysdeps/s390/s390-64/memcpy.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sysdeps/s390/s390-64/memcpy.S b/sysdeps/s390/s390-64/memcpy.S
index e84a357..9d60a14 100644
--- a/sysdeps/s390/s390-64/memcpy.S
+++ b/sysdeps/s390/s390-64/memcpy.S
@@ -47,7 +47,7 @@ ENTRY(memcpy)
 .L_Z900_4:
 	br      %r14
 .L_Z900_13:
-	chi	%r5,4096             # Switch to mvcle for copies >1MB
+	cghi	%r5,4096            # Switch to mvcle for copies >1MB
 	jh      __memcpy_mvcle
 .L_Z900_12:
 	mvc     0(256,%r1),0(%r3)
-- 
2.3.0