re PR c++/54427 (Expose more vector extensions)

2014-10-03  Marc Glisse  <marc.glisse@inria.fr>

	PR c++/54427
	PR c++/57198
	PR c++/58845
gcc/c-family/
	* c-common.c (warn_logical_operator): Punt for vectors.
gcc/cp/
	* typeck.c (cp_build_binary_op): save_expr after convert to save
	redundant operations.
	[TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR]: Handle vectors.
	(cp_build_unary_op) [TRUTH_NOT_EXPR]: Likewise.
gcc/
	* doc/extend.texi (Vector Extensions): Document &&, ||, ! in C++.
gcc/testsuite/
	* g++.dg/ext/vector9.C: Update, not an error anymore.
	* g++.dg/ext/vector27.C: Replace with new test.
	* g++.dg/ext/vector28.C: New file.
	* g++.dg/other/error23.C: Update to a different error.

From-SVN: r215872

gcc/ChangeLog

@@ -1,3 +1,10 @@
+2014-10-03  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR c++/54427
+	PR c++/57198
+	PR c++/58845
+	* doc/extend.texi (Vector Extensions): Document &&, ||, ! in C++.
+
 2014-10-03  Jan Hubicka  <hubicka@ucw.cz>
 
 	* cgraph.h (struct indirect_call_info): Add IN_POLYMORPHIC_CDTOR

gcc/c-family/ChangeLog

@@ -1,3 +1,10 @@
+2014-10-03  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR c++/54427
+	PR c++/57198
+	PR c++/58845
+	* c-common.c (warn_logical_operator): Punt for vectors.
+
 2014-10-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
 
 	Implement SD-6: SG10 Feature Test Recommendations

gcc/c-family/c-common.c

@@ -1677,6 +1677,10 @@ warn_logical_operator (location_t location, enum tree_code code, tree type,
 	   || INTEGRAL_TYPE_P (TREE_TYPE (op_right))))
     return;
 
+  /* The range computations only work with scalars.  */
+  if (VECTOR_TYPE_P (TREE_TYPE (op_left))
+      || VECTOR_TYPE_P (TREE_TYPE (op_right)))
+    return;
 
   /* We first test whether either side separately is trivially true
      (with OR) or trivially false (with AND).  If so, do not warn.

gcc/cp/ChangeLog

@@ -1,3 +1,13 @@
+2014-10-03  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR c++/54427
+	PR c++/57198
+	PR c++/58845
+	* typeck.c (cp_build_binary_op): save_expr after convert to save
+	redundant operations.
+	[TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR]: Handle vectors.
+	(cp_build_unary_op) [TRUTH_NOT_EXPR]: Likewise.
+
 2014-10-03  Jason Merrill  <jason@redhat.com>
 
 	* decl.c (start_decl): Complain about static/thread_local vars

gcc/cp/typeck.c

@@ -4045,8 +4045,8 @@ cp_build_binary_op (location_t location,
             return error_mark_node;
           case stv_firstarg:
             {
-	      op0 = save_expr (op0);
               op0 = convert (TREE_TYPE (type1), op0);
+	      op0 = save_expr (op0);
               op0 = build_vector_from_val (type1, op0);
               type0 = TREE_TYPE (op0);
               code0 = TREE_CODE (type0);
@@ -4055,8 +4055,8 @@ cp_build_binary_op (location_t location,
             }
           case stv_secondarg:
             {
-	      op1 = save_expr (op1);
               op1 = convert (TREE_TYPE (type0), op1);
+	      op1 = save_expr (op1);
               op1 = build_vector_from_val (type0, op1);
               type1 = TREE_TYPE (op1);
               code1 = TREE_CODE (type1);
@@ -4191,11 +4191,49 @@ cp_build_binary_op (location_t location,
     case TRUTH_ORIF_EXPR:
     case TRUTH_AND_EXPR:
     case TRUTH_OR_EXPR:
-      if (VECTOR_TYPE_P (type0) || VECTOR_TYPE_P (type1))
+      if (!VECTOR_TYPE_P (type0) && VECTOR_TYPE_P (type1))
 	{
-	  sorry ("logical operation on vector type");
+	  if (!COMPARISON_CLASS_P (op1))
-	  return error_mark_node;
+	    op1 = cp_build_binary_op (EXPR_LOCATION (op1), NE_EXPR, op1,
+				      build_zero_cst (type1), complain);
+	  if (code == TRUTH_ANDIF_EXPR)
+	    {
+	      tree z = build_zero_cst (TREE_TYPE (op1));
+	      return build_conditional_expr (location, op0, op1, z, complain);
+	    }
+	  else if (code == TRUTH_ORIF_EXPR)
+	    {
+	      tree m1 = build_all_ones_cst (TREE_TYPE (op1));
+	      return build_conditional_expr (location, op0, m1, op1, complain);
+	    }
+	  else
+	    gcc_unreachable ();
 	}
+      if (VECTOR_TYPE_P (type0))
+	{
+	  if (!COMPARISON_CLASS_P (op0))
+	    op0 = cp_build_binary_op (EXPR_LOCATION (op0), NE_EXPR, op0,
+				      build_zero_cst (type0), complain);
+	  if (!VECTOR_TYPE_P (type1))
+	    {
+	      tree m1 = build_all_ones_cst (TREE_TYPE (op0));
+	      tree z = build_zero_cst (TREE_TYPE (op0));
+	      op1 = build_conditional_expr (location, op1, z, m1, complain);
+	    }
+	  else if (!COMPARISON_CLASS_P (op1))
+	    op1 = cp_build_binary_op (EXPR_LOCATION (op1), NE_EXPR, op1,
+				      build_zero_cst (type1), complain);
+
+	  if (code == TRUTH_ANDIF_EXPR)
+	    code = BIT_AND_EXPR;
+	  else if (code == TRUTH_ORIF_EXPR)
+	    code = BIT_IOR_EXPR;
+	  else
+	    gcc_unreachable ();
+
+	  return cp_build_binary_op (location, code, op0, op1, complain);
+	}
+
       result_type = boolean_type_node;
       break;
 
@@ -5685,6 +5723,9 @@ cp_build_unary_op (enum tree_code code, tree xarg, int noconvert,
       break;
 
     case TRUTH_NOT_EXPR:
+      if (VECTOR_INTEGER_TYPE_P (TREE_TYPE (arg)))
+	return cp_build_binary_op (input_location, EQ_EXPR, arg,
+				   build_zero_cst (TREE_TYPE (arg)), complain);
       arg = perform_implicit_conversion (boolean_type_node, arg,
 					 complain);
       val = invert_truthvalue_loc (input_location, arg);

gcc/doc/extend.texi

@@ -7918,6 +7918,13 @@ vector. If both @code{b} and @code{c} are scalars and the type of
 @code{b} and @code{c} are converted to a vector type whose elements have
 this type and with the same number of elements as @code{a}.
 
+In C++, the logic operators @code{!, &&, ||} are available for vectors.
+@code{!v} is equivalent to @code{v == 0}, @code{a && b} is equivalent to
+@code{a!=0 & b!=0} and @code{a || b} is equivalent to @code{a!=0 | b!=0}.
+For mixed operations between a scalar @code{s} and a vector @code{v},
+@code{s && v} is equivalent to @code{s?v!=0:0} (the evaluation is
+short-circuit) and @code{v && s} is equivalent to @code{v!=0 & (s?-1:0)}.
+
 Vector shuffling is available using functions
 @code{__builtin_shuffle (vec, mask)} and
 @code{__builtin_shuffle (vec0, vec1, mask)}.

gcc/testsuite/ChangeLog

@@ -1,3 +1,13 @@
+2014-10-03  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR c++/54427
+	PR c++/57198
+	PR c++/58845
+	* g++.dg/ext/vector9.C: Update, not an error anymore.
+	* g++.dg/ext/vector27.C: Replace with new test.
+	* g++.dg/ext/vector28.C: New file.
+	* g++.dg/other/error23.C: Update to a different error.
+
 2014-10-03  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.dg/torture/vshuf-v8df.c: New test.

gcc/testsuite/g++.dg/ext/vector27.C

@@ -1,7 +1,13 @@
-// PR c++/58845
+/* { dg-do compile } */
 
-void foo()
+typedef int veci __attribute__ ((vector_size (4 * sizeof (int))));
+typedef float vecf __attribute__ ((vector_size (4 * sizeof (float))));
+
+void f (veci *a, veci *b, int c)
 {
-  int v __attribute__((vector_size(8)));
+  *a = !*a || *b < ++c;
-  v = v || v;			// { dg-bogus "" "" { xfail *-*-* } }
+}
+void g (vecf *a, vecf *b)
+{
+  *a = (*a < 1 && !(*b > 2)) ? *a + *b : 3;
 }

gcc/testsuite/g++.dg/ext/vector28.C

@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+
+typedef int veci __attribute__ ((vector_size (4 * sizeof (int))));
+typedef float vecf __attribute__ ((vector_size (4 * sizeof (float))));
+
+void f (veci *a, vecf *b, int c)
+{
+  *a = c || *b;
+  *a = *a || c;
+}

gcc/testsuite/g++.dg/ext/vector9.C

@@ -6,5 +6,5 @@ typedef int   v4i __attribute__((vector_size(8)));
 void foo()
 {
   v4f v;
-  !(v4i)v; // { dg-error "v4i|argument" }
+  !(v4i)v;
 }

gcc/testsuite/g++.dg/other/error23.C

@@ -2,4 +2,4 @@
 // { dg-do compile }
 
 int v __attribute ((vector_size (8)));
-bool b = !(v - v);	// { dg-error "could not convert .\\(__vector.2. int\\)\\{0, 0\\}. from .__vector.2. int. to .bool.|in argument to unary" }
+bool b = !(v - v);	// { dg-error "not convert .__vector.2. int. to .bool. in initialization" }