http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43440

--- gcc-4.4.4.orig/gcc/config/arm/aout.h
+++ gcc-4.4.4/gcc/config/arm/aout.h
@@ -163,34 +163,49 @@
   {"mvdx12", 39},				\
   {"mvdx13", 40},				\
   {"mvdx14", 41},				\
-  {"mvdx15", 42},				\
-  {"d0", 63}, {"q0", 63},			\
-  {"d1", 65},					\
-  {"d2", 67}, {"q1", 67},			\
-  {"d3", 69},					\
-  {"d4", 71}, {"q2", 71},			\
-  {"d5", 73},					\
-  {"d6", 75}, {"q3", 75},			\
-  {"d7", 77},					\
-  {"d8", 79}, {"q4", 79},			\
-  {"d9", 81},					\
-  {"d10", 83}, {"q5", 83},			\
-  {"d11", 85},					\
-  {"d12", 87}, {"q6", 87},			\
-  {"d13", 89},					\
-  {"d14", 91}, {"q7", 91},			\
-  {"d15", 93},					\
-  {"q8", 95},					\
-  {"q9", 99},					\
-  {"q10", 103},					\
-  {"q11", 107},					\
-  {"q12", 111},					\
-  {"q13", 115},					\
-  {"q14", 119},					\
-  {"q15", 123}					\
+  {"mvdx15", 42}				\
 }
 #endif
 
+#ifndef OVERLAPPING_REGISTER_NAMES
+#define OVERLAPPING_REGISTER_NAMES       \
+{					 \
+  {"d0", 63, 2},			 \
+  {"d1", 65, 2},			 \
+  {"d2", 67, 2},			 \
+  {"d3", 69, 2},			 \
+  {"d4", 71, 2},			 \
+  {"d5", 73, 2},			 \
+  {"d6", 75, 2},			 \
+  {"d7", 77, 2},			 \
+  {"d8", 79, 2},			 \
+  {"d9", 81, 2},			 \
+  {"d10", 83, 2},			 \
+  {"d11", 85, 2},			 \
+  {"d12", 87, 2},			 \
+  {"d13", 89, 2},			 \
+  {"d14", 91, 2},			 \
+  {"d15", 93, 2},			 \
+  {"q0", 63, 4},			 \
+  {"q1", 67, 4},			 \
+  {"q2", 71, 4},			 \
+  {"q3", 75, 4},			 \
+  {"q4", 79, 4},			 \
+  {"q5", 83, 4},			 \
+  {"q6", 87, 4},			 \
+  {"q7", 91, 4},			 \
+  {"q8", 95, 4},			 \
+  {"q9", 99, 4},			 \
+  {"q10", 103, 4},			 \
+  {"q11", 107, 4},			 \
+  {"q12", 111, 4},			 \
+  {"q13", 115, 4},			 \
+  {"q14", 119, 4},			 \
+  {"q15", 123, 4}			 \
+}
+#endif
+
+
 #ifndef NO_DOLLAR_IN_LABEL
 #define NO_DOLLAR_IN_LABEL 1
 #endif
--- gcc-4.4.4.orig/gcc/output.h
+++ gcc-4.4.4/gcc/output.h
@@ -169,6 +169,11 @@
    Prefixes such as % are optional.  */
 extern int decode_reg_name (const char *);
 
+/* Similar to decode_reg_name, but takes an extra parameter that is a
+   pointer to the number of (internal) registers described by the
+   external name.  */
+extern int decode_reg_name_and_count (const char *, int *);
+
 extern void assemble_alias (tree, tree);
 
 extern void default_assemble_visibility (tree, int);
--- gcc-4.4.4.orig/gcc/reginfo.c
+++ gcc-4.4.4/gcc/reginfo.c
@@ -800,39 +800,44 @@
 fix_register (const char *name, int fixed, int call_used)
 {
   int i;
+  int reg, nregs;
 
   /* Decode the name and update the primary form of
      the register info.  */
-
-  if ((i = decode_reg_name (name)) >= 0)
+  if ((reg = decode_reg_name_and_count (name, &nregs)) >= 0)
     {
-      if ((i == STACK_POINTER_REGNUM
+      gcc_assert (nregs >= 1);
+      for (i = reg; i < reg + nregs; i++)
+      {
+        if ((i == STACK_POINTER_REGNUM
 #ifdef HARD_FRAME_POINTER_REGNUM
-	   || i == HARD_FRAME_POINTER_REGNUM
+             || i == HARD_FRAME_POINTER_REGNUM
 #else
-	   || i == FRAME_POINTER_REGNUM
+             || i == FRAME_POINTER_REGNUM
 #endif
-	   )
-	  && (fixed == 0 || call_used == 0))
-	{
-	  static const char * const what_option[2][2] = {
-	    { "call-saved", "call-used" },
-	    { "no-such-option", "fixed" }};
+             )
+            && (fixed == 0 || call_used == 0))
+          {
+            static const char * const what_option[2][2] = {
+              { "call-saved", "call-used" },
+              { "no-such-option", "fixed" }};
 
-	  error ("can't use '%s' as a %s register", name,
-		 what_option[fixed][call_used]);
-	}
-      else
-	{
-	  fixed_regs[i] = fixed;
-	  call_used_regs[i] = call_used;
+            error ("can't use '%s' as a %s register", name,
+                   what_option[fixed][call_used]);
+          }
+        else
+          {
+            fixed_regs[i] = fixed;
+            call_used_regs[i] = call_used;
 #ifdef CALL_REALLY_USED_REGISTERS
-	  if (fixed == 0)
-	    call_really_used_regs[i] = call_used;
+             if (fixed == 0)
+               call_really_used_regs[i] = call_used;
 #endif
-	}
-    }
-  else
+           }
+        }
+      }
+    else
+
     {
       warning (0, "unknown register name: %s", name);
     }
--- gcc-4.4.4.orig/gcc/stmt.c
+++ gcc-4.4.4/gcc/stmt.c
@@ -681,13 +681,14 @@
   for (tail = clobbers; tail; tail = TREE_CHAIN (tail))
     {
       const char *regname;
+      int nregs;
 
       if (TREE_VALUE (tail) == error_mark_node)
 	return;
       regname = TREE_STRING_POINTER (TREE_VALUE (tail));
 
-      i = decode_reg_name (regname);
-      if (i >= 0 || i == -4)
+      i = decode_reg_name_and_count (regname, &nregs);
+      if (i == -4)
 	++nclobbers;
       else if (i == -2)
 	error ("unknown register name %qs in %<asm%>", regname);
@@ -695,14 +696,21 @@
       /* Mark clobbered registers.  */
       if (i >= 0)
         {
-	  /* Clobbering the PIC register is an error.  */
-	  if (i == (int) PIC_OFFSET_TABLE_REGNUM)
-	    {
-	      error ("PIC register %qs clobbered in %<asm%>", regname);
-	      return;
-	    }
+        int reg;
 
-	  SET_HARD_REG_BIT (clobbered_regs, i);
+        for (reg = i; reg < i + nregs; reg++)
+          {
+            ++nclobbers;
+
+            /* Clobbering the PIC register is an error.  */
+            if (reg == (int) PIC_OFFSET_TABLE_REGNUM)
+              {
+                error ("PIC register clobbered by %qs in %<asm%>", regname);
+                return;
+              }
+
+            SET_HARD_REG_BIT (clobbered_regs, reg);
+          }
 	}
     }
 
@@ -1012,8 +1020,9 @@
       for (tail = clobbers; tail; tail = TREE_CHAIN (tail))
 	{
 	  const char *regname = TREE_STRING_POINTER (TREE_VALUE (tail));
-	  int j = decode_reg_name (regname);
-	  rtx clobbered_reg;
+	  int reg, nregs;
+          int j = decode_reg_name_and_count (regname, &nregs);
+          rtx clobbered_reg;
 
 	  if (j < 0)
 	    {
@@ -1033,31 +1042,40 @@
 	      /* Ignore unknown register, error already signaled.  */
 	      continue;
 	    }
-
-	  /* Use QImode since that's guaranteed to clobber just one reg.  */
-	  clobbered_reg = gen_rtx_REG (QImode, j);
-
-	  /* Do sanity check for overlap between clobbers and respectively
-	     input and outputs that hasn't been handled.  Such overlap
-	     should have been detected and reported above.  */
-	  if (!clobber_conflict_found)
-	    {
-	      int opno;
-
-	      /* We test the old body (obody) contents to avoid tripping
-		 over the under-construction body.  */
-	      for (opno = 0; opno < noutputs; opno++)
-		if (reg_overlap_mentioned_p (clobbered_reg, output_rtx[opno]))
-		  internal_error ("asm clobber conflict with output operand");
-
-	      for (opno = 0; opno < ninputs - ninout; opno++)
-		if (reg_overlap_mentioned_p (clobbered_reg,
-					     ASM_OPERANDS_INPUT (obody, opno)))
-		  internal_error ("asm clobber conflict with input operand");
+        
+          for (reg = j; reg < j + nregs; reg++)
+            {
+              /* Use QImode since that's guaranteed to clobber just
+               * one reg.  */
+              clobbered_reg = gen_rtx_REG (QImode, reg);
+
+              /* Do sanity check for overlap between clobbers and
+                 respectively input and outputs that hasn't been
+                 handled.  Such overlap should have been detected and
+                 reported above.  */
+              if (!clobber_conflict_found)
+                {
+                  int opno;
+
+                  /* We test the old body (obody) contents to avoid
+                     tripping over the under-construction body.  */
+                  for (opno = 0; opno < noutputs; opno++)
+                    if (reg_overlap_mentioned_p (clobbered_reg,
+                                                 output_rtx[opno]))
+                      internal_error
+                        ("asm clobber conflict with output operand");
+
+                  for (opno = 0; opno < ninputs - ninout; opno++)
+                    if (reg_overlap_mentioned_p (clobbered_reg,
+                                                 ASM_OPERANDS_INPUT (obody,
+                                                                     opno)))
+                      internal_error
+                        ("asm clobber conflict with input operand");
+                }
+  
+              XVECEXP (body, 0, i++)
+                = gen_rtx_CLOBBER (VOIDmode, clobbered_reg);
 	    }
-
-	  XVECEXP (body, 0, i++)
-	    = gen_rtx_CLOBBER (VOIDmode, clobbered_reg);
 	}
 
       emit_insn (body);
--- gcc-4.4.4.orig/gcc/varasm.c
+++ gcc-4.4.4/gcc/varasm.c
@@ -1031,8 +1031,11 @@
    Prefixes such as % are optional.  */
 
 int
-decode_reg_name (const char *asmspec)
+decode_reg_name_and_count (const char *asmspec, int *pnregs)
 {
+  /* Presume just one register is clobbered.  */
+   *pnregs = 1;
+
   if (asmspec != 0)
     {
       int i;
@@ -1058,6 +1061,25 @@
 	    && ! strcmp (asmspec, strip_reg_name (reg_names[i])))
 	  return i;
 
+#ifdef OVERLAPPING_REGISTER_NAMES
+      {
+      static const struct
+      {
+        const char *const name;
+        const int number;
+        const int nregs;
+      } table[] = OVERLAPPING_REGISTER_NAMES;
+
+      for (i = 0; i < (int) ARRAY_SIZE (table); i++)
+        if (table[i].name[0]
+            && ! strcmp (asmspec, table[i].name))
+          {
+            *pnregs = table[i].nregs;
+            return table[i].number;
+          }
+      }
+#endif /* OVERLAPPING_REGISTER_NAMES */
+
 #ifdef ADDITIONAL_REGISTER_NAMES
       {
 	static const struct { const char *const name; const int number; } table[]
@@ -1081,6 +1103,15 @@
 
   return -1;
 }
+
+int
+decode_reg_name (const char *name)
+{
+   int count;
+   return decode_reg_name_and_count (name, &count);
+}
+
+
 
 /* Return true if DECL's initializer is suitable for a BSS section.  */