diff --git a/openjdk/hotspot/src/share/vm/adlc/adlparse.cpp b/openjdk/hotspot/src/share/vm/adlc/adlparse.cpp
index 31955ff7..6dcd90ac 100644
--- openjdk/hotspot/src/share/vm/adlc/adlparse.cpp
+++ openjdk/hotspot/src/share/vm/adlc/adlparse.cpp
@@ -4564,7 +4564,7 @@ char *ADLParser::get_paren_expr(const char *description, bool include_location)
 // string(still inside the file buffer).  Returns a pointer to the string or
 // NULL if some other token is found instead.
 char *ADLParser::get_ident_common(bool do_preproc) {
-  register char c;
+  char c;
   char *start;                    // Pointer to start of token
   char *end;                      // Pointer to end of token
 
@@ -4762,7 +4762,7 @@ char *ADLParser::get_unique_ident(FormDict& dict, const char* nameDescription){
 // invokes a parse_err if the next token is not an integer.
 // This routine does not leave the integer null-terminated.
 int ADLParser::get_int(void) {
-  register char c;
+  char c;
   char         *start;            // Pointer to start of token
   char         *end;              // Pointer to end of token
   int           result;           // Storage for integer result
diff --git a/openjdk/hotspot/src/share/vm/adlc/arena.cpp b/openjdk/hotspot/src/share/vm/adlc/arena.cpp
index d7e4fc6e..406187ae 100644
--- openjdk/hotspot/src/share/vm/adlc/arena.cpp
+++ openjdk/hotspot/src/share/vm/adlc/arena.cpp
@@ -79,7 +79,7 @@ Arena::Arena( Arena *a )
 // Total of all Chunks in arena
 size_t Arena::used() const {
   size_t sum = _chunk->_len - (_max-_hwm); // Size leftover in this Chunk
-  register Chunk *k = _first;
+  Chunk *k = _first;
   while( k != _chunk) {         // Whilst have Chunks in a row
     sum += k->_len;             // Total size of this Chunk
     k = k->_next;               // Bump along to next Chunk
@@ -93,7 +93,7 @@ void* Arena::grow( size_t x ) {
   // Get minimal required size.  Either real big, or even bigger for giant objs
   size_t len = max(x, Chunk::size);
 
-  register Chunk *k = _chunk;   // Get filled-up chunk address
+  Chunk *k = _chunk;   // Get filled-up chunk address
   _chunk = new (len) Chunk(len);
 
   if( k ) k->_next = _chunk;    // Append new chunk to end of linked list
diff --git a/openjdk/hotspot/src/share/vm/adlc/dict2.cpp b/openjdk/hotspot/src/share/vm/adlc/dict2.cpp
index f341a2b6..2dc60b25 100644
--- openjdk/hotspot/src/share/vm/adlc/dict2.cpp
+++ openjdk/hotspot/src/share/vm/adlc/dict2.cpp
@@ -283,9 +283,9 @@ void Dict::print(PrintKeyOrValue print_key, PrintKeyOrValue print_value) {
 // limited to MAXID characters in length.  Experimental evidence on 150K of
 // C text shows excellent spreading of values for any size hash table.
 int hashstr(const void *t) {
-  register char c, k = 0;
-  register int sum = 0;
-  register const char *s = (const char *)t;
+  char c, k = 0;
+  int sum = 0;
+  const char *s = (const char *)t;
 
   while (((c = s[k]) != '\0') && (k < MAXID-1)) { // Get characters till nul
     c = (char) ((c << 1) + 1);    // Characters are always odd!
diff --git a/openjdk/hotspot/src/share/vm/adlc/main.cpp b/openjdk/hotspot/src/share/vm/adlc/main.cpp
index 52044f12..40bcda74 100644
--- openjdk/hotspot/src/share/vm/adlc/main.cpp
+++ openjdk/hotspot/src/share/vm/adlc/main.cpp
@@ -58,7 +58,7 @@ int main(int argc, char *argv[])
 
   // Read command line arguments and file names
   for( int i = 1; i < argc; i++ ) { // For all arguments
-    register char *s = argv[i]; // Get option/filename
+    char *s = argv[i]; // Get option/filename
 
     if( *s++ == '-' ) {         // It's a flag? (not a filename)
       if( !*s ) {               // Stand-alone `-' means stdin