S390: Increase function alignment to 16 bytes.

Set the default function alignment to 16 bytes in order to
get rid of some unwanted performance effects.

Please see also GCC commit "S/390: Set default function
alignment to 16." (Subversion revision 262817)

ChangeLog:

	* sysdeps/s390/s390-64/sysdep.h(ENTRY): Use alignment of 16byte.
	* sysdeps/s390/s390-32/sysdep.h: Likewise.

diff --git a/ChangeLog b/ChangeLog
index cb43925..fb092ba 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2019-03-04  Stefan Liebler  <stli@linux.ibm.com>
+
+       * sysdeps/s390/s390-64/sysdep.h (ENTRY): Use alignment of 16byte.
+       * sysdeps/s390/s390-32/sysdep.h: Likewise.
+
 2019-03-02  TAMUKI Shoichi  <tamuki@linet.gr.jp>
 
        [BZ #24162]

diff --git a/sysdeps/s390/s390-32/sysdep.h b/sysdeps/s390/s390-32/sysdep.h
index 6605dde..4a441e1 100644 (file)
--- a/sysdeps/s390/s390-32/sysdep.h
+++ b/sysdeps/s390/s390-32/sysdep.h
@@ -32,7 +32,7 @@
 #define        ENTRY(name)                                                           \
   .globl C_SYMBOL_NAME(name);                                                \
   .type C_SYMBOL_NAME(name),@function;                                       \
-  .align ALIGNARG(2);                                                        \
+  .align ALIGNARG(4);                                                        \
   C_LABEL(name)                                                                      \
   cfi_startproc;                                                             \
   CALL_MCOUNT

diff --git a/sysdeps/s390/s390-64/sysdep.h b/sysdeps/s390/s390-64/sysdep.h
index 99dbf3f..0531fa5 100644 (file)
--- a/sysdeps/s390/s390-64/sysdep.h
+++ b/sysdeps/s390/s390-64/sysdep.h
@@ -32,7 +32,7 @@
 #define        ENTRY(name)                                                           \
   .globl C_SYMBOL_NAME(name);                                                \
   .type C_SYMBOL_NAME(name),@function;                                       \
-  .align ALIGNARG(2);                                                        \
+  .align ALIGNARG(4);                                                        \
   C_LABEL(name)                                                                      \
   cfi_startproc;                                                             \
   CALL_MCOUNT