From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 11 Sep 2019 08:34:41 +0000 (+0200)
Subject: re PR tree-optimization/91723 (builtin fma is not optimized or vectorized as *+)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=26d815a3e587ac04dbd63eec3fb5aecb04db7242;p=gcc.git

re PR tree-optimization/91723 (builtin fma is not optimized or vectorized as *+)

	PR tree-optimization/91723
	* tree-vect-stmts.c (vectorizable_call): Use types_compatible_p check
	instead of pointer equality when checking if argument vectypes are
	the same.

	* gcc.dg/vect/vect-fma-3.c: New test.

From-SVN: r275634
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 360e606f47e..33b43862051 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2019-09-11  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/91723
+	* tree-vect-stmts.c (vectorizable_call): Use types_compatible_p check
+	instead of pointer equality when checking if argument vectypes are
+	the same.
+
 	PR middle-end/91725
 	* match.pd ((A / (1 << B)) -> (A >> B)): Call tree_nonzero_bits instead
 	of get_nonzero_bits, only call it for integral types.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8ef80620c08..d4488b6789c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2019-09-11  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/91723
+	* gcc.dg/vect/vect-fma-3.c: New test.
+
 	PR middle-end/91725
 	* gcc.c-torture/compile/pr91725.c: New test.
 
diff --git a/gcc/testsuite/gcc.dg/vect/vect-fma-3.c b/gcc/testsuite/gcc.dg/vect/vect-fma-3.c
new file mode 100644
index 00000000000..b231a328fa5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-fma-3.c
@@ -0,0 +1,17 @@
+/* PR tree-optimization/91723 */
+/* { dg-do compile { target { scalar_all_fma || { i?86-*-* x86_64-*-* } } } } */
+/* { dg-additional-options "-mfma" { target { i?86-*-* x86_64-*-* } } } */
+
+void
+foo (double *restrict r, const double *restrict a,
+     const double *restrict b, const double *restrict c)
+{
+  for (int i = 0; i < 1024; i++)
+    {
+      double x = __builtin_fma (a[i], b[i], c[i]);
+      x = __builtin_fma (a[i], b[i], x);
+      r[i] = x;
+    }
+}
+
+/* { dg-final { scan-tree-dump-times "LOOP VECTORIZED" 1 "vect" { target vect_double } } } */
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index dd9d45a9547..edc7e0de4d3 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -3308,7 +3308,7 @@ vectorizable_call (stmt_vec_info stmt_info, gimple_stmt_iterator *gsi,
       if (!vectype_in)
 	vectype_in = vectypes[i];
       else if (vectypes[i]
-	       && vectypes[i] != vectype_in)
+	       && !types_compatible_p (vectypes[i], vectype_in))
 	{
 	  if (dump_enabled_p ())
 	    dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,