[aarch64-port-dev ] Do not use r0 as a scratch register

[Andrew Haley]

I will now write my lines:

r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register
r0 is not a scratch register

Andrew.


# HG changeset patch
# User aph
# Date 1374156793 -3600
# Node ID 7ddc396907b4de2648e018a0ec69140691420fd6
# Parent  a305c2e430220494cc653b2f17c602cb3cf9784a
Do not use r0 as a scratch register

diff -r a305c2e43022 -r 7ddc396907b4 src/cpu/aarch64/vm/vtableStubs_aarch64.cpp
--- a/src/cpu/aarch64/vm/vtableStubs_aarch64.cpp	Tue Jul 16 16:16:46 2013 +0100
+++ b/src/cpu/aarch64/vm/vtableStubs_aarch64.cpp	Thu Jul 18 15:13:13 2013 +0100
@@ -67,7 +67,7 @@

   // get receiver klass
   address npe_addr = __ pc();
-  __ load_klass(r0, j_rarg0);
+  __ load_klass(r19, j_rarg0);

 #ifndef PRODUCT
   if (DebugVtables) {
@@ -83,7 +83,7 @@
   }
 #endif // PRODUCT

-  __ lookup_virtual_method(r0, vtable_index, rmethod);
+  __ lookup_virtual_method(r19, vtable_index, rmethod);

   if (DebugVtables) {
     Label L;