# HG changeset patch
# User aph
# Date 1448534313 0
#      Thu Nov 26 10:38:33 2015 +0000
# Node ID 6096fae081d57fd111c14e064bb273c5265980a6
# Parent  6100ab176973758e7a19cab7feb9319d67f0650a
8143219: AArch64 broken by 8141132: JEP 254: Compact Strings
Reviewed-by: kvn

diff --git a/src/cpu/aarch64/vm/aarch64.ad b/src/cpu/aarch64/vm/aarch64.ad
--- a/src/cpu/aarch64/vm/aarch64.ad
+++ b/src/cpu/aarch64/vm/aarch64.ad
@@ -14167,6 +14167,9 @@
 
   format %{ "String Compare $str1,$cnt1,$str2,$cnt2 -> $result   # KILL $tmp1" %}
   ins_encode %{
+    // Count is in 8-bit bytes; non-Compact chars are 16 bits.
+    __ asrw($cnt1$$Register, $cnt1$$Register, 1);
+    __ asrw($cnt2$$Register, $cnt2$$Register, 1);
     __ string_compare($str1$$Register, $str2$$Register,
                       $cnt1$$Register, $cnt2$$Register, $result$$Register,
                       $tmp1$$Register);
@@ -14223,6 +14226,8 @@
 
   format %{ "String Equals $str1,$str2,$cnt -> $result    // KILL $tmp" %}
   ins_encode %{
+    // Count is in 8-bit bytes; non-Compact chars are 16 bits.
+    __ asrw($cnt$$Register, $cnt$$Register, 1);
     __ string_equals($str1$$Register, $str2$$Register,
                       $cnt$$Register, $result$$Register,
                       $tmp$$Register);