# HG changeset patch
# User Josef Eisl <josef.eisl@jku.at>
# Date 1416237287 -3600
# Node ID 758ecda76985f2a495b1740db27b97da570b22ee
# Parent  d11ce424f09d671d639bb699ca64d42a3410fcb1
FrameMapBuilder: remove freeSpillSlot().

diff -r d11ce424f09d -r 758ecda76985 graal/com.oracle.graal.lir/src/com/oracle/graal/lir/DelayedFrameMapBuilder.java
--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/DelayedFrameMapBuilder.java	Tue Nov 11 18:17:17 2014 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/DelayedFrameMapBuilder.java	Mon Nov 17 16:14:47 2014 +0100
@@ -55,22 +55,9 @@
         this.mappables = new ArrayList<>();
     }
 
-    private Set<VirtualStackSlot> freedSlots;
     private final List<FrameMappable> mappables;
 
     public VirtualStackSlot allocateSpillSlot(LIRKind kind) {
-        if (freedSlots != null) {
-            for (Iterator<VirtualStackSlot> iter = freedSlots.iterator(); iter.hasNext();) {
-                VirtualStackSlot s = iter.next();
-                if (s.getLIRKind().equals(kind)) {
-                    iter.remove();
-                    if (freedSlots.isEmpty()) {
-                        freedSlots = null;
-                    }
-                    return s;
-                }
-            }
-        }
         SimpleVirtualStackSlot slot = new SimpleVirtualStackSlot(kind);
         stackSlots.add(slot);
         return slot;
@@ -169,13 +156,6 @@
         return codeCache;
     }
 
-    public void freeSpillSlot(VirtualStackSlot slot) {
-        if (freedSlots == null) {
-            freedSlots = new HashSet<>();
-        }
-        freedSlots.add(slot);
-    }
-
     public void callsMethod(CallingConvention cc) {
         calls.add(cc);
     }
@@ -189,21 +169,7 @@
         }
         // rewrite
         mappables.forEach(m -> m.map(mapping::get));
-        //
-        if (freedSlots != null) {
-            // If the freed slots cover the complete spill area (except for the return
-            // address slot), then the spill size is reset to its initial value.
-            // Without this, frameNeedsAllocating() would never return true.
-            int total = 0;
-            for (VirtualStackSlot s : freedSlots) {
-                total += frameMap.getTarget().getSizeInBytes(s.getKind());
-            }
-            if (total == frameMap.spillSize - frameMap.initialSpillSize) {
-                // reset spill area size
-                frameMap.spillSize = frameMap.initialSpillSize;
-            }
-            freedSlots = null;
-        }
+
         frameMap.finish();
         return frameMap;
     }
diff -r d11ce424f09d -r 758ecda76985 graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMapBuilder.java
--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMapBuilder.java	Tue Nov 11 18:17:17 2014 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMapBuilder.java	Mon Nov 17 16:14:47 2014 +0100
@@ -80,12 +80,6 @@
     CodeCacheProvider getCodeCache();
 
     /**
-     * Frees a spill slot that was obtained via {@link #allocateSpillSlot(LIRKind)} such that it can
-     * be reused for the next allocation request for the same kind of slot.
-     */
-    void freeSpillSlot(VirtualStackSlot reservedSlot);
-
-    /**
      * Informs the frame map that the compiled code calls a particular method, which may need stack
      * space for outgoing arguments.
      *