# HG changeset patch
# User Stefan Anzinger <stefan.anzinger@oracle.com>
# Date 1409703476 25200
# Node ID b23172dcb8f79057fc1126ba50140893b2c6d026
# Parent  4e2d34d7715b591a38405ae4732643ecb4fed6c6
[SPARC] Giving now two scratch registers

diff -r 4e2d34d7715b -r b23172dcb8f7 graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCMove.java
--- a/graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCMove.java	Tue Sep 02 17:16:26 2014 -0700
+++ b/graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCMove.java	Tue Sep 02 17:17:56 2014 -0700
@@ -411,14 +411,16 @@
             if (isRegister(result)) {
                 const2reg(crb, masm, result, (Constant) input);
             } else if (isStackSlot(result)) {
-                Register scratch = g1;
-                Constant constant = asConstant(input);
-                if (constant.isNull()) {
-                    new Clr(scratch).emit(masm);
-                } else {
-                    new Setx(constant.asLong(), scratch).emit(masm);
+                try (SPARCScratchRegister sc = SPARCScratchRegister.get()) {
+                    Register scratch = sc.getRegister();
+                    Constant constant = asConstant(input);
+                    if (constant.isNull()) {
+                        new Clr(scratch).emit(masm);
+                    } else {
+                        new Setx(constant.asLong(), scratch).emit(masm);
+                    }
+                    reg2stack(crb, masm, result, scratch.asValue(LIRKind.derive(input)));
                 }
-                reg2stack(crb, masm, result, scratch.asValue(LIRKind.derive(input)));
             } else {
                 throw GraalInternalError.shouldNotReachHere("Result is a: " + result);
             }
diff -r 4e2d34d7715b -r b23172dcb8f7 graal/com.oracle.graal.sparc/src/com/oracle/graal/sparc/SPARCScratchRegister.java
--- a/graal/com.oracle.graal.sparc/src/com/oracle/graal/sparc/SPARCScratchRegister.java	Tue Sep 02 17:16:26 2014 -0700
+++ b/graal/com.oracle.graal.sparc/src/com/oracle/graal/sparc/SPARCScratchRegister.java	Tue Sep 02 17:17:56 2014 -0700
@@ -4,8 +4,10 @@
 
 public class SPARCScratchRegister implements AutoCloseable {
     private final ThreadLocal<Boolean> locked = new ThreadLocal<>();
+    private final ThreadLocal<Exception> where = new ThreadLocal<>();
     private final Register register;
-    private static final SPARCScratchRegister scratch = new SPARCScratchRegister(SPARC.g3);
+    private static final SPARCScratchRegister scratch1 = new SPARCScratchRegister(SPARC.g3);
+    private static final SPARCScratchRegister scratch2 = new SPARCScratchRegister(SPARC.g1);
 
     private SPARCScratchRegister(Register register) {
         super();
@@ -18,8 +20,10 @@
         }
         boolean isLocked = locked.get();
         if (isLocked) {
+            where.get().printStackTrace();
             throw new RuntimeException("Temp Register is already taken!");
         } else {
+            where.set(new Exception());
             locked.set(true);
             return register;
         }
@@ -35,7 +39,19 @@
     }
 
     public static SPARCScratchRegister get() {
-        return scratch;
+        if (scratch1.isLocked()) {
+            return scratch2;
+        } else {
+            return scratch1;
+        }
     }
 
+    public boolean isLocked() {
+        Boolean isLocked = locked.get();
+        if (isLocked == null) {
+            return false;
+        } else {
+            return isLocked;
+        }
+    }
 }