re PR tree-optimization/78675 (ICE: verify_gimple failed (error: integral result type precision does not match field size of BIT_FIELD_REF))

2016-12-06  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/78675
	* tree-vect-loop.c (vectorizable_live_operation): For
	VECTOR_BOOLEAN_TYPE_P vectype use integral type with bitsize precision
	instead of TREE_TYPE (vectype) for the BIT_FIELD_REF.

	* gcc.c-torture/execute/pr78675.c: New test.
	* gcc.target/i386/pr78675-1.c: New test.
	* gcc.target/i386/pr78675-2.c: New test.

From-SVN: r243283

6 files changed, 76 insertions, 2 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 38e86cf..4e70e27 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2016-12-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/78675
+	* tree-vect-loop.c (vectorizable_live_operation): For
+	VECTOR_BOOLEAN_TYPE_P vectype use integral type with bitsize precision
+	instead of TREE_TYPE (vectype) for the BIT_FIELD_REF.
+
 2016-12-06  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR middle-end/78642
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 3b0a8fa..35f10fe 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2016-12-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/78675
+	* gcc.c-torture/execute/pr78675.c: New test.
+	* gcc.target/i386/pr78675-1.c: New test.
+	* gcc.target/i386/pr78675-2.c: New test.
+
 2016-12-05  Andrew Senkevich  <andrew.senkevich@intel.com>
 
 	* gcc.target/i386/avx512bw-kandd-1.c: New.
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr78675.c b/gcc/testsuite/gcc.c-torture/execute/pr78675.c
new file mode 100644
index 0000000..7cef342
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr78675.c
@@ -0,0 +1,38 @@
+/* PR tree-optimization/78675 */
+
+long int a;
+
+__attribute__((noinline, noclone)) long int
+foo (long int x)
+{
+  long int b;
+  while (a < 1)
+    {
+      b = a && x;
+      ++a;
+    }
+  return b;
+}
+
+int
+main ()
+{
+  if (foo (0) != 0)
+    __builtin_abort ();
+  a = 0;
+  if (foo (1) != 0)
+    __builtin_abort ();
+  a = 0;
+  if (foo (25) != 0)
+    __builtin_abort ();
+  a = -64;
+  if (foo (0) != 0)
+    __builtin_abort ();
+  a = -64;
+  if (foo (1) != 0)
+    __builtin_abort ();
+  a = -64;
+  if (foo (25) != 0)
+    __builtin_abort ();
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr78675-1.c b/gcc/testsuite/gcc.target/i386/pr78675-1.c
new file mode 100644
index 0000000..68435b6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr78675-1.c
@@ -0,0 +1,5 @@
+/* PR tree-optimization/78675 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -mavx512f" } */
+
+#include "../../gcc.c-torture/execute/pr78675.c"
diff --git a/gcc/testsuite/gcc.target/i386/pr78675-2.c b/gcc/testsuite/gcc.target/i386/pr78675-2.c
new file mode 100644
index 0000000..8f5ef87
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr78675-2.c
@@ -0,0 +1,15 @@
+/* { dg-do run } */
+/* { dg-options "-O3 -mavx512f" } */
+/* { dg-require-effective-target avx512f } */
+
+#include "avx512f-check.h"
+
+#define main do_main
+
+#include "../../gcc.c-torture/execute/pr78675.c"
+
+static void
+avx512f_test (void)
+{
+  do_main ();
+}
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index 4150b0d..6e8b89c 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -6601,8 +6601,10 @@ vectorizable_live_operation (gimple *stmt,
   /* Create a new vectorized stmt for the uses of STMT and insert outside the
      loop.  */
   gimple_seq stmts = NULL;
-  tree new_tree = build3 (BIT_FIELD_REF, TREE_TYPE (vectype), vec_lhs, bitsize,
-			  bitstart);
+  tree bftype = TREE_TYPE (vectype);
+  if (VECTOR_BOOLEAN_TYPE_P (vectype))
+    bftype = build_nonstandard_integer_type (tree_to_uhwi (bitsize), 1);
+  tree new_tree = build3 (BIT_FIELD_REF, bftype, vec_lhs, bitsize, bitstart);
   new_tree = force_gimple_operand (fold_convert (lhs_type, new_tree), &stmts,
 				   true, NULL_TREE);
   if (stmts)