libitm: Improve aarch64 _ITM_beginTransaction

        * config/aarch64/sjlj.S (_ITM_beginTransaction): Use post-inc
        addressing mode in epilogue.

From-SVN: r213035

libitm/ChangeLog

+2014-07-24  Richard Henderson  <rth@redhat.com>
+
+	* config/aarch64/sjlj.S (_ITM_beginTransaction): Use post-inc
+	addressing mode in epilogue.
+
 2014-05-28  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* acinclude.m4 (LIBITM_CHECK_LINKER_HWCAP): Check for

libitm/config/aarch64/sjlj.S

@@ -53,8 +53,7 @@ _ITM_beginTransaction:
 	bl	GTM_begin_transaction
 
 	/* Return; we don't need to restore any of the call-saved regs.  */
-	ldp	x29, x30, [sp]
-	add     sp, sp, #11*16
+	ldp	x29, x30, [sp], 11*16
 	cfi_adjust_cfa_offset(-11*16)
 	cfi_restore(x29)
 	cfi_restore(x30)