expr: Limit the store flag optimization for single bit to non-vectors [PR113322]

The problem here is after the recent vectorizer improvements, we end up
with a comparison against a vector bool 0 which then tries expand_single_bit_test
which is not expecting vector comparisons at all.

The IR was:
  vector(4) <signed-boolean:1> mask_patt_5.13;
  _Bool _12;

  mask_patt_5.13_44 = vect_perm_even_41 != { 0.0, 1.0e+0, 2.0e+0, 3.0e+0 };
  _12 = mask_patt_5.13_44 == { 0, 0, 0, 0 };

and we tried to call expand_single_bit_test for the last comparison.
Rejecting the vector comparison is needed.

Bootstrapped and tested on x86_64-linux-gnu with no regressions.

	PR middle-end/113322

gcc/ChangeLog:

	* expr.cc (do_store_flag): Don't try single bit tests with
	comparison on vector types.

gcc/testsuite/ChangeLog:

	* gcc.c-torture/compile/pr113322-1.c: New test.

Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>

diff --git a/gcc/expr.cc b/gcc/expr.cc
index 0bf80832fe50555a86b2406b4e2019bc992cb8df..34f5ff90a9f898483bb0a9938a53d248679c3d58 100644 (file)
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -13621,6 +13621,8 @@ do_store_flag (sepops ops, rtx target, machine_mode mode)
   if ((code == NE || code == EQ)
       && (integer_zerop (arg1)
          || integer_pow2p (arg1))
+      /* vector types are not handled here. */
+      && TREE_CODE (TREE_TYPE (arg1)) != VECTOR_TYPE
       && (TYPE_PRECISION (ops->type) != 1 || TYPE_UNSIGNED (ops->type)))
     {
       tree narg0 = arg0;

diff --git a/gcc/testsuite/gcc.c-torture/compile/pr113322-1.c b/gcc/testsuite/gcc.c-torture/compile/pr113322-1.c
new file mode 100644 (file)
index 0000000..efed960
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr113322-1.c
@@ -0,0 +1,14 @@
+/* { dg-additional-options "-march=sapphirerapids" { target x86_64*-*-* i?86-*-* } } */
+/* PR middle-end/113322 */
+
+float a[16];
+void 
+foo ()
+{
+int i;
+for (i = 0; i < 16/2; i++)
+ {
+ if (a[2*i+((0 +1)%2)] != (3 * (2*i+((0 +1)%2)) + 2))
+  __builtin_abort ();
+ }
+}