[asm-cherry-pick] Log names on method size overflow

REBASE NOTE:

When applying this change to the ASM 6.2 rebases, I squashed

54bc3ea4 [asm-cherry-pick] Log names on method size overflow
e7e86ae7 [asm-cherry-pick] Fix findItemByIndex in case of hash collisions

Into this commit and reworked it to store the name in the
MethodWriter, rather than trying to recover it from the constant
pool, whose API changed significantly in 6.2.

Author: lrytz

src/main/java/scala/tools/asm/MethodWriter.java

@@ -299,6 +299,8 @@ final class MethodWriter extends MethodVisitor {
   /** The name_index field of the method_info JVMS structure. */
   private final int nameIndex;
 
+  private final String name;
+
   /** The descriptor_index field of the method_info JVMS structure. */
   private final int descriptorIndex;
 
@@ -591,6 +593,7 @@ final class MethodWriter extends MethodVisitor {
     super(Opcodes.ASM6);
     this.symbolTable = symbolTable;
     this.accessFlags = "<init>".equals(name) ? access | Constants.ACC_CONSTRUCTOR : access;
+    this.name = name;
     this.nameIndex = symbolTable.addConstantUtf8(name);
     this.descriptorIndex = symbolTable.addConstantUtf8(descriptor);
     this.descriptor = descriptor;
@@ -2058,7 +2061,7 @@ int computeMethodInfoSize() {
     // For ease of reference, we use here the same attribute order as in Section 4.7 of the JVMS.
     if (code.length > 0) {
       if (code.length > 65535) {
-        throw new IndexOutOfBoundsException("Method code too large!");
+        throw new RuntimeException("Method "+ name+ "'s code too large!");
       }
       symbolTable.addConstantUtf8(Constants.CODE);
       // The Code attribute has 6 header bytes, plus 2, 2, 4 and 2 bytes respectively for max_stack,