[rfc] display vector types using vector_size syntax

Andrew Burgess aburgess@broadcom.com
Mon Oct 29 10:54:00 GMT 2012


On 26/10/2012 7:53 PM, Tom Tromey wrote:
>>>>>> "Andrew" == Andrew Burgess <aburgess@broadcom.com> writes:
> 
> Andrew> Committed, but with the extra "__attribute__" syntax as that seemed to
> Andrew> be the most popular.
> Andrew> http://sourceware.org/ml/gdb-cvs/2012-09/msg00069.html
> 
> With this patch I get weird output sometimes:
> 
> (gdb) ptype $_siginfo
> type = struct {
>     int si_signo;
>     int si_errno;
>     int si_code;
>     union {
>         int _pad__attribute__ ((vector_size(28)));
> 
> Note the lack of a space between "_pad" and "__attribute__".
> 
> I filed this as http://sourceware.org/bugzilla/show_bug.cgi?id=14772

Sorry for the breakage.

The patch below fixes this, and adds some suitable tests.

OK to commit?

Thanks,
Andrew


gdb/ChangeLog

2012-10-29  Andrew Burgess  <aburgess@broadcom.com>

	PR cli/14772
	* c-typeprint.c (c_print_type): Don't print a space for vector
	types, this is handled within the suffix.
	(c_type_print_varspec_suffix): Add a space to vector suffix.

diff --git a/gdb/c-typeprint.c b/gdb/c-typeprint.c
index 8b5bc21..a43dfce 100644
--- a/gdb/c-typeprint.c
+++ b/gdb/c-typeprint.c
@@ -67,7 +67,8 @@ c_print_type (struct type *type,
       || ((show > 0 || TYPE_NAME (type) == 0)
 	  && (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC
 	      || code == TYPE_CODE_METHOD
-	      || code == TYPE_CODE_ARRAY
+	      || (code == TYPE_CODE_ARRAY
+		  && !TYPE_VECTOR (type))
 	      || code == TYPE_CODE_MEMBERPTR
 	      || code == TYPE_CODE_METHODPTR
 	      || code == TYPE_CODE_REF)))
@@ -619,7 +620,7 @@ c_type_print_varspec_suffix (struct type *type,
 	  fprintf_filtered (stream, ")");
 
 	fprintf_filtered (stream, (is_vector ?
-				   "__attribute__ ((vector_size(" : "["));
+				   " __attribute__ ((vector_size(" : "["));
 	if (get_array_bounds (type, &low_bound, &high_bound))
 	  fprintf_filtered (stream, "%s", 
 			    plongest (high_bound - low_bound + 1));



gdb/testsuite/ChangeLog

2012-10-29  Andrew Burgess  <aburgess@broadcom.com>

	PR cli/14772
	* gdb.base/gnu_vector.c (union_with_vector_1)
	(struct_with_vector_1): Add new struct and union for testing
	ptype.
	* gdb.base/gnu_vector.exp: Add testing of ptype on vectors, and
	structs / unions containing vectors.


diff --git a/gdb/testsuite/gdb.base/gnu_vector.c b/gdb/testsuite/gdb.base/gnu_vector.c
index dc4f60d..a2a218f 100644
--- a/gdb/testsuite/gdb.base/gnu_vector.c
+++ b/gdb/testsuite/gdb.base/gnu_vector.c
@@ -42,6 +42,19 @@ longlong2 ll2 = {1, 2};
 float2 f2 = {1, 2};
 double2 d2 = {1, 2};
 
+union
+{
+  int i;
+  char cv __attribute__ ((vector_size (sizeof (int))));
+} union_with_vector_1;
+
+struct
+{
+  int i;
+  char cv __attribute__ ((vector_size (sizeof (int))));
+  float4 f4;
+} struct_with_vector_1;
+
 int
 main ()
 {
diff --git a/gdb/testsuite/gdb.base/gnu_vector.exp b/gdb/testsuite/gdb.base/gnu_vector.exp
index a1443a5..baba119 100644
--- a/gdb/testsuite/gdb.base/gnu_vector.exp
+++ b/gdb/testsuite/gdb.base/gnu_vector.exp
@@ -130,3 +130,13 @@ gdb_test "print i2 + i4a" "Cannot perform operation on vectors with different ty
 gdb_test "print f4a + f2" "Cannot perform operation on vectors with different types"
 gdb_test "print f2 + f4a" "Cannot perform operation on vectors with different types"
 
+# Test ptype on vector types.
+gdb_test "ptype c4" "type = char __attribute__ \\(\\(vector_size\\(4\\)\\)\\)"
+gdb_test "ptype char4" "type = char __attribute__ \\(\\(vector_size\\(4\\)\\)\\)"
+gdb_test "ptype i4a" "type = int __attribute__ \\(\\(vector_size\\(4\\)\\)\\)"
+gdb_test "ptype int4" "type = int __attribute__ \\(\\(vector_size\\(4\\)\\)\\)"
+gdb_test "ptype f4b" "type = float __attribute__ \\(\\(vector_size\\(4\\)\\)\\)"
+gdb_test "ptype float4" "type = float __attribute__ \\(\\(vector_size\\(4\\)\\)\\)"
+
+gdb_test "ptype union_with_vector_1" "type = union {\r\n\[\t \]+int i;\r\n\[\t \]+char cv __attribute__ \\(\\(vector_size\\(4\\)\\)\\);\r\n}"
+gdb_test "ptype struct_with_vector_1" "type = struct {\r\n\[\t \]+int i;\r\n\[\t \]+char cv __attribute__ \\(\\(vector_size\\(4\\)\\)\\);\r\n\[\t \]+float4 f4;\r\n}"





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