(sparc_type_code): Don't put more than 30 bits of info

into the variable qualifiers.

From-SVN: r7123

diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 81723adf9c62a6b54f5772f2f1722d00eb3b2288..4b8c1621757642caee32c24afb6942f8ecffc579 100644 (file)
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -2886,6 +2886,11 @@ sparc_type_code (type)
   register unsigned long qualifiers = 0;
   register unsigned shift = 6;
 
+  /* Only the first 30 bits of the qualifer are valid.  We must refrain from
+     setting more, since some assemblers will give an error for this.  Also,
+     we must be careful to avoid shifts of 32 bits or more to avoid getting
+     unpredictable results.  */
+
   for (;;)
     {
       switch (TREE_CODE (type))
@@ -2894,14 +2899,16 @@ sparc_type_code (type)
          return qualifiers;
   
        case ARRAY_TYPE:
-         qualifiers |= (3 << shift);
+         if (shift < 30)
+           qualifiers |= (3 << shift);
          shift += 2;
          type = TREE_TYPE (type);
          break;
 
        case FUNCTION_TYPE:
        case METHOD_TYPE:
-         qualifiers |= (2 << shift);
+         if (shift < 30)
+           qualifiers |= (2 << shift);
          shift += 2;
          type = TREE_TYPE (type);
          break;
@@ -2909,7 +2916,8 @@ sparc_type_code (type)
        case POINTER_TYPE:
        case REFERENCE_TYPE:
        case OFFSET_TYPE:
-         qualifiers |= (1 << shift);
+         if (shift < 30)
+           qualifiers |= (1 << shift);
          shift += 2;
          type = TREE_TYPE (type);
          break;