gdb:

* valops.c (value_cast): Handle vector types.
	* valarith.c (value_binop): Widen scalar to vector if appropriate.
gdb/testsuite:
	* gdb.base/gnu_vector.c (ia, ib, fa, fb): New variables.
	* gdb.base/gnu_vector.exp: Add tests for scalar to vector widening.

gdb/ChangeLog

@@ -1,3 +1,8 @@
+2010-10-08  Ken Werner  <ken.werner@de.ibm.com>
+
+	* valops.c (value_cast): Handle vector types.
+	* valarith.c (value_binop): Widen scalar to vector if appropriate.
+
 2010-10-08  Ulrich Weigand  <uweigand@de.ibm.com>
 
 	* arm-tdep.c (thumb_expand_immediate): New function.

gdb/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2010-10-08  Ken Werner  <ken.werner@de.ibm.com>
+
+	* gdb.base/gnu_vector.c (ia, ib, fa, fb): New variables.
+	* gdb.base/gnu_vector.exp: Add tests for scalar to vector widening.
+
 2010-10-06  Ken Werner  <ken.werner@de.ibm.com>
 
 	* gdb.base/constvars.c (logical, lugged, luck, lunar, lumen, lurk,

gdb/testsuite/gdb.base/gnu_vector.c

@@ -17,16 +17,30 @@
 
    Contributed by Ken Werner <ken.werner@de.ibm.com>  */
 
-char __attribute__ ((vector_size (4 * sizeof(char)))) c4 = {1, 2, 3, 4};
-int __attribute__ ((vector_size (4 * sizeof(int)))) i4a = {2, 4, 8, 16};
-int __attribute__ ((vector_size (4 * sizeof(int)))) i4b = {1, 2, 8, 4};
-float __attribute__ ((vector_size (4 * sizeof(float)))) f4a = {2, 4, 8, 16};
-float __attribute__ ((vector_size (4 * sizeof(float)))) f4b = {1, 2, 8, 4};
-unsigned int __attribute__ ((vector_size (4 * sizeof(unsigned int)))) ui4 = {2, 4, 8, 16};
-int __attribute__ ((vector_size (2 * sizeof(int)))) i2 = {1, 2};
-long long __attribute__ ((vector_size (2 * sizeof(long long)))) ll2 = {1, 2};
-float __attribute__ ((vector_size (2 * sizeof(float)))) f2 = {1, 2};
-double __attribute__ ((vector_size (2 * sizeof(double)))) d2 = {1, 2};
+typedef int __attribute__ ((vector_size (4 * sizeof(int)))) int4;
+typedef unsigned int __attribute__ ((vector_size (4 * sizeof(unsigned int)))) uint4;
+typedef char __attribute__ ((vector_size (4 * sizeof(char)))) char4;
+typedef float __attribute__ ((vector_size (4 * sizeof(float)))) float4;
+
+typedef int __attribute__ ((vector_size (2 * sizeof(int)))) int2;
+typedef long long __attribute__ ((vector_size (2 * sizeof(long long)))) longlong2;
+typedef float __attribute__ ((vector_size (2 * sizeof(float)))) float2;
+typedef double __attribute__ ((vector_size (2 * sizeof(double)))) double2;
+
+int ia = 2;
+int ib = 1;
+float fa = 2;
+float fb = 1;
+char4 c4 = {1, 2, 3, 4};
+int4 i4a = {2, 4, 8, 16};
+int4 i4b = {1, 2, 8, 4};
+float4 f4a = {2, 4, 8, 16};
+float4 f4b = {1, 2, 8, 4};
+uint4 ui4 = {2, 4, 8, 16};
+int2 i2 = {1, 2};
+longlong2 ll2 = {1, 2};
+float2 f2 = {1, 2};
+double2 d2 = {1, 2};
 
 int
 main ()

gdb/testsuite/gdb.base/gnu_vector.exp

@@ -76,9 +76,37 @@ gdb_test "print f4a - f4b" "\\\$$decimal = \\{1, 2, 0, 12\\}"
 gdb_test "print f4a * f4b" "\\\$$decimal = \\{2, 8, 64, 64\\}"
 gdb_test "print f4a / f4b" "\\\$$decimal = \\{2, 2, 1, 4\\}"
 
-# Test error conditions
-gdb_test "print i4a + 1" "Vector operations are only supported among vectors"
-gdb_test "print 1 + f4a" "Vector operations are only supported among vectors"
+# Test scalar to vector widening
+gdb_test "print (int2) 1" "\\\$$decimal = \\{1, 1\\}"
+gdb_test "print (longlong2) 2" "\\\$$decimal = \\{2, 2\\}"
+gdb_test "print (float2) 3" "\\\$$decimal = \\{3, 3\\}"
+gdb_test "print (double2) 4" "\\\$$decimal = \\{4, 4\\}"
+gdb_test "print (char4) 12" "\\\$$decimal = \\{12, 12, 12, 12\\}"
+gdb_test "print (uint4) ia" "\\\$$decimal = \\{2, 2, 2, 2\\}"
+gdb_test "print (int4) -3" "\\\$$decimal = \\{-3, -3, -3, -3\\}"
+gdb_test "print (float4) 4" "\\\$$decimal = \\{4, 4, 4, 4\\}"
+
+gdb_test "print i4a + ib" "\\\$$decimal = \\{3, 5, 9, 17\\}"
+gdb_test "print fa - f4b" "\\\$$decimal = \\{1, 0, -6, -2\\}"
+gdb_test "print f4a * fb" "\\\$$decimal = \\{2, 4, 8, 16\\}"
+gdb_test "print ia / i4b" "\\\$$decimal = \\{2, 1, 0, 0\\}"
+gdb_test "print i4a % ib" "\\\$$decimal = \\{0, 0, 0, 0\\}"
+
+gdb_test "print ia & i4b" "\\\$$decimal = \\{0, 2, 0, 0\\}"
+gdb_test "print i4a | ib" "\\\$$decimal = \\{3, 5, 9, 17\\}"
+gdb_test "print ia ^ i4b" "\\\$$decimal = \\{3, 0, 10, 6\\}"
+gdb_test "print i4a << ib" "\\\$$decimal = \\{4, 8, 16, 32\\}"
+gdb_test "print i4a >> ib" "\\\$$decimal = \\{1, 2, 4, 8\\}"
+
+gdb_test "print i4b = ia" "\\\$$decimal = \\{2, 2, 2, 2\\}"
+gdb_test "print i4a = 3" "\\\$$decimal = \\{3, 3, 3, 3\\}"
+gdb_test "print f4a = fb" "\\\$$decimal = \\{1, 1, 1, 1\\}"
+gdb_test "print f4b = 2" "\\\$$decimal = \\{2, 2, 2, 2\\}"
+
+gdb_test "print i4a = \{2, 4, 8, 16\}" "\\\$$decimal = \\{2, 4, 8, 16\\}"
+gdb_test "print i4a <<= ib" "\\\$$decimal = \\{4, 8, 16, 32\\}"
+
+# Test some error scenarios
 gdb_test "print i4a + d2" "Cannot perform operation on vectors with different types"
 gdb_test "print d2 + i4a" "Cannot perform operation on vectors with different types"
 gdb_test "print f4a + ll2" "Cannot perform operation on vectors with different types"

gdb/valarith.c

@@ -1435,14 +1435,34 @@ vector_binop (struct value *val1, struct value *val2, enum exp_opcode op)
 struct value *
 value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op)
 {
+  struct value *val;
   struct type *type1 = check_typedef (value_type (arg1));
   struct type *type2 = check_typedef (value_type (arg2));
+  int t1_is_vec = (TYPE_CODE (type1) == TYPE_CODE_ARRAY
+		   && TYPE_VECTOR (type1));
+  int t2_is_vec = (TYPE_CODE (type2) == TYPE_CODE_ARRAY
+		   && TYPE_VECTOR (type2));
 
-  if ((TYPE_CODE (type1) == TYPE_CODE_ARRAY && TYPE_VECTOR (type1))
-	  || (TYPE_CODE (type2) == TYPE_CODE_ARRAY && TYPE_VECTOR (type2)))
-    return vector_binop (arg1, arg2, op);
+  if (!t1_is_vec && !t2_is_vec)
+    val = scalar_binop (arg1, arg2, op);
+  else if (t1_is_vec && t2_is_vec)
+    val = vector_binop (arg1, arg2, op);
   else
-    return scalar_binop (arg1, arg2, op);
+    {
+      /* Widen the scalar operand to a vector.  */
+      struct value **v = t1_is_vec ? &arg2 : &arg1;
+      struct type *t = t1_is_vec ? type2 : type1;
+      
+      if (TYPE_CODE (t) != TYPE_CODE_FLT
+	  && TYPE_CODE (t) != TYPE_CODE_DECFLOAT
+	  && !is_integral_type (t))
+	error (_("Argument to operation not a number or boolean."));
+
+      *v = value_cast (t1_is_vec ? type1 : type2, *v);
+      val = vector_binop (arg1, arg2, op);
+    }
+
+  return val;
 }
 
 /* Simulate the C operator ! -- return 1 if ARG1 contains zero.  */

gdb/valops.c

@@ -421,7 +421,8 @@ value_cast (struct type *type, struct value *arg2)
     }
 
   if (current_language->c_style_arrays
-      && TYPE_CODE (type2) == TYPE_CODE_ARRAY)
+      && TYPE_CODE (type2) == TYPE_CODE_ARRAY
+      && !TYPE_VECTOR (type2))
     arg2 = value_coerce_array (arg2);
 
   if (TYPE_CODE (type2) == TYPE_CODE_FUNC)
@@ -537,6 +538,26 @@ value_cast (struct type *type, struct value *arg2)
 	 minus one, instead of biasing the normal case.  */
       return value_from_longest (type, -1);
     }
+  else if (code1 == TYPE_CODE_ARRAY && TYPE_VECTOR (type) && scalar)
+    {
+      /* Widen the scalar to a vector.  */
+      struct type *eltype;
+      struct value *val;
+      int i, n;
+
+      eltype = check_typedef (TYPE_TARGET_TYPE (type));
+      arg2 = value_cast (eltype, arg2);
+      val = allocate_value (type);
+      n = TYPE_LENGTH (type) / TYPE_LENGTH (eltype);
+
+      for (i = 0; i < n; i++)
+	{
+	  /* Duplicate the contents of arg2 into the destination vector.  */
+	  memcpy (value_contents_writeable (val) + (i * TYPE_LENGTH (eltype)),
+		  value_contents_all (arg2), TYPE_LENGTH (eltype));
+	}
+      return val;
+    }
   else if (TYPE_LENGTH (type) == TYPE_LENGTH (type2))
     {
       if (code1 == TYPE_CODE_PTR && code2 == TYPE_CODE_PTR)