Print spillweight of RefPosition (#54933)

Author: kunalspathak

src/coreclr/jit/lsra.cpp

@@ -2467,7 +2467,7 @@ void LinearScan::dumpVarRefPositions(const char* title)
                 printf("  (Interval %d)\n", interval->intervalIndex);
                 for (RefPosition* ref = interval->firstRefPosition; ref != nullptr; ref = ref->nextRefPosition)
                 {
-                    ref->dump();
+                    ref->dump(this);
                 }
             }
             else
@@ -4346,7 +4346,7 @@ void LinearScan::dumpRefPositions(const char* str)
     printf("------------\n");
     for (RefPosition& refPos : refPositions)
     {
-        refPos.dump();
+        refPos.dump(this);
     }
 }
 #endif // DEBUG
@@ -8895,7 +8895,7 @@ const char* LinearScan::getScoreName(RegisterScore score)
     }
 }
 
-void RefPosition::dump()
+void RefPosition::dump(LinearScan* linearScan)
 {
     printf("<RefPosition #%-3u @%-3u", rpNum, nodeLocation);
 
@@ -8969,6 +8969,8 @@ void RefPosition::dump()
     {
         printf(" regOptional");
     }
+
+    printf(" wt=%.2f", linearScan->getWeight(this));
     printf(">\n");
 }
 

src/coreclr/jit/lsra.h

@@ -1,3 +1,4 @@
+
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 /*****************************************************************************/
@@ -2444,7 +2445,7 @@ class RefPosition
         return *this;
     }
 
-    void dump();
+    void dump(LinearScan* linearScan);
 #endif // DEBUG
 };
 

src/coreclr/jit/lsrabuild.cpp

@@ -525,7 +525,7 @@ RefPosition* LinearScan::newRefPosition(
            (regRecord->lastRefPosition->refType != theRefType));
     associateRefPosWithInterval(newRP);
 
-    DBEXEC(VERBOSE, newRP->dump());
+    DBEXEC(VERBOSE, newRP->dump(this));
     return newRP;
 }
 
@@ -620,7 +620,7 @@ RefPosition* LinearScan::newRefPosition(Interval*    theInterval,
 
     associateRefPosWithInterval(newRP);
 
-    DBEXEC(VERBOSE, newRP->dump());
+    DBEXEC(VERBOSE, newRP->dump(this));
     return newRP;
 }
 
@@ -2624,7 +2624,7 @@ void LinearScan::validateIntervals()
             printf("-----------------\n");
             for (RefPosition* ref = interval->firstRefPosition; ref != nullptr; ref = ref->nextRefPosition)
             {
-                ref->dump();
+                ref->dump(this);
                 RefType refType = ref->refType;
                 if (!defined && RefTypeIsUse(refType))
                 {