[aarch64-port-dev ] jdk8: Get BUILTIN_SIM working again

[Edward Nevill]

Oops,

The encode_iso_array patch broke the BUILTIN_SIM image because it executes uqxtn instructions.

The following patch gets it going again.

Maybe we should create 'UseSIMD' and set it to false for BUILTIN_SIM and use predicate(UseSIMD) in aarch64.ad?

Regards,
Ed.

--- CUT HERE ---
# HG changeset patch
# User Edward Nevill edward.nevill at linaro.org
# Date 1407250586 -3600
#      Tue Aug 05 15:56:26 2014 +0100
# Node ID 2dfe9abe27fe6c9231e64ebd66e7ca3e6fb5b2bf
# Parent  1a507fdf6de65e387fe15c382a31f3353878b820
Get builtin sim image working again

diff -r 1a507fdf6de6 -r 2dfe9abe27fe src/cpu/aarch64/vm/macroAssembler_aarch64.cpp
--- a/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp	Mon Aug 04 18:03:53 2014 +0100
+++ b/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp	Tue Aug 05 15:56:26 2014 +0100
@@ -3625,6 +3625,7 @@
 
       mov(result, len);	// Save initial len
 
+#ifndef BUILTIN_SIM
       subs(len, len, 32);
       br(LT, LOOP_8);
 
@@ -3663,6 +3664,9 @@
     BIND(LOOP_1);
       adds(len, len, 8);
       br(LE, DONE);
+#else
+      cbz(len, DONE);
+#endif
     BIND(NEXT_1);
       ldrh(tmp1, Address(post(src, 2)));
       tst(tmp1, 0xff00);
--- CUT HERE ---