# HG changeset patch
# User Lukas Stadler <lukas.stadler@jku.at>
# Date 1370423373 -7200
# Node ID c65bad5126b035c4b66d5cd11fea514cad599e02
# Parent  17e31cfaf03727e12d97fac0afe2090d6544480f
pull HotSpotForeignCallLinkage.isLeaf into ForeignCallLinkage and rename to canDeoptimize

diff -r 17e31cfaf037 -r c65bad5126b0 graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/ForeignCallLinkage.java
--- a/graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/ForeignCallLinkage.java	Wed Jun 05 11:48:53 2013 +0200
+++ b/graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/ForeignCallLinkage.java	Wed Jun 05 11:09:33 2013 +0200
@@ -55,4 +55,11 @@
      *         this target
      */
     boolean destroysRegisters();
+
+    /**
+     * Determines if this is call to a function that does not deoptimize, and therefore also does
+     * not lock, GC or throw exceptions. That is, the thread's execution state during the call is
+     * never inspected by another thread.
+     */
+    boolean canDeoptimize();
 }
diff -r 17e31cfaf037 -r c65bad5126b0 graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java
--- a/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java	Wed Jun 05 11:48:53 2013 +0200
+++ b/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java	Wed Jun 05 11:09:33 2013 +0200
@@ -211,8 +211,7 @@
     @Override
     public Variable emitForeignCall(ForeignCallLinkage linkage, DeoptimizingNode info, Value... args) {
         Stub stub = getStub();
-        HotSpotForeignCallLinkage hsLinkage = (HotSpotForeignCallLinkage) linkage;
-        boolean destroysRegisters = hsLinkage.destroysRegisters();
+        boolean destroysRegisters = linkage.destroysRegisters();
 
         AMD64SaveRegistersOp save = null;
         StackSlot[] savedRegisterLocations = null;
@@ -234,7 +233,7 @@
 
         Variable result;
 
-        if (!hsLinkage.isLeaf()) {
+        if (linkage.canDeoptimize()) {
             assert info != null;
             append(new AMD64HotSpotCRuntimeCallPrologueOp());
             result = super.emitForeignCall(linkage, info, args);
diff -r 17e31cfaf037 -r c65bad5126b0 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotForeignCallLinkage.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotForeignCallLinkage.java	Wed Jun 05 11:48:53 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotForeignCallLinkage.java	Wed Jun 05 11:09:33 2013 +0200
@@ -107,7 +107,7 @@
      * @param effect specifies if the call destroys or preserves all registers (apart from
      *            temporaries which are always destroyed)
      * @param ccType calling convention type
-     * @param transition specifies if this is a {@linkplain #isLeaf() leaf} call
+     * @param transition specifies if this is a {@linkplain #canDeoptimize() leaf} call
      * @param reexecutable specifies if the call can be re-executed without (meaningful) side
      *            effects. Deoptimization will not return to a point before a call that cannot be
      *            re-executed.
@@ -235,11 +235,8 @@
         return effect == DESTROYS_REGISTERS;
     }
 
-    /**
-     * Determines if this is call to a function that does not lock, GC or throw exceptions. That is,
-     * the thread's execution state during the call is never inspected by another thread.
-     */
-    public boolean isLeaf() {
-        return transition == Transition.LEAF;
+    @Override
+    public boolean canDeoptimize() {
+        return transition != Transition.LEAF;
     }
 }
diff -r 17e31cfaf037 -r c65bad5126b0 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Wed Jun 05 11:48:53 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Wed Jun 05 11:09:33 2013 +0200
@@ -1004,7 +1004,7 @@
     }
 
     public boolean canDeoptimize(ForeignCallDescriptor descriptor) {
-        return !foreignCalls.get(descriptor).isLeaf();
+        return foreignCalls.get(descriptor).canDeoptimize();
     }
 
     public LocationIdentity[] getKilledLocations(ForeignCallDescriptor descriptor) {