From 45230a4019ed9f03ea63b3c25c8e4a9b9897dc98 Mon Sep 17 00:00:00 2001
From: Uros Bizjak <ubizjak@gmail.com>
Date: Thu, 1 Aug 2019 20:07:19 +0200
Subject: [PATCH] re PR tree-optimization/85693 (Generation of SAD (Sum of
 Absolute Difference) instruction)

	PR target/85693
	* config/i386/mmx.md (usadv8qi): New expander.

testsuite/ChangeLog:

	PR target/85693
	* gcc.target/i386/pr85693-1.c: New test.

From-SVN: r273981
---
 gcc/ChangeLog                             |  5 +++++
 gcc/config/i386/mmx.md                    | 15 +++++++++++++++
 gcc/testsuite/ChangeLog                   |  5 +++++
 gcc/testsuite/gcc.target/i386/pr85693-1.c | 21 +++++++++++++++++++++
 gcc/testsuite/gcc.target/i386/pr85693.c   |  2 +-
 5 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/pr85693-1.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dc06ef46943..8efcffaef8a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2019-08-01  Uroš Bizjak  <ubizjak@gmail.com>
+
+	PR target/85693
+	* config/i386/mmx.md (usadv8qi): New expander.
+
 2019-08-01  Matthew Beliveau  <mbelivea@redhat.com>
 
 	PR c++/90590
diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index 67bcf5b240d..3bbf5e07dcb 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -1970,6 +1970,21 @@
   DONE;
 })
 
+(define_expand "usadv8qi"
+  [(match_operand:V2SI 0 "register_operand")
+   (match_operand:V8QI 1 "register_operand")
+   (match_operand:V8QI 2 "vector_operand")
+   (match_operand:V2SI 3 "vector_operand")]
+  "TARGET_MMX_WITH_SSE"
+{
+  rtx t1 = gen_reg_rtx (V1DImode);
+  rtx t2 = gen_reg_rtx (V2SImode);
+  emit_insn (gen_mmx_psadbw (t1, operands[1], operands[2]));
+  convert_move (t2, t1, 0);
+  emit_insn (gen_addv2si3 (operands[0], t2, operands[3]));
+  DONE;
+})
+
 (define_insn_and_split "mmx_pmovmskb"
   [(set (match_operand:SI 0 "register_operand" "=r,r")
 	(unspec:SI [(match_operand:V8QI 1 "register_operand" "y,x")]
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 6b363ac3e0b..0b4334a8cbd 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-08-01  Uroš Bizjak  <ubizjak@gmail.com>
+
+	PR target/85693
+	* gcc.target/i386/pr85693-1.c: New test.
+
 2019-08-01  Matthew Beliveau  <mbelivea@redhat.com>
 
 	PR c++/90590
diff --git a/gcc/testsuite/gcc.target/i386/pr85693-1.c b/gcc/testsuite/gcc.target/i386/pr85693-1.c
new file mode 100644
index 00000000000..b2bf58d9e29
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr85693-1.c
@@ -0,0 +1,21 @@
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-msse2 -O2 -ftree-vectorize" } */
+
+#define N 8
+
+int abs (int);
+
+unsigned char pix1[N], pix2[N];
+
+int foo (void)
+{
+  int i_sum = 0;
+  int i;
+
+  for (i = 0; i < N; i++)
+    i_sum += abs (pix1[i] - pix2[i]);
+
+  return i_sum;
+}
+
+/* { dg-final { scan-assembler "psadbw" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pr85693.c b/gcc/testsuite/gcc.target/i386/pr85693.c
index 214a739fcbd..9843ea527cb 100644
--- a/gcc/testsuite/gcc.target/i386/pr85693.c
+++ b/gcc/testsuite/gcc.target/i386/pr85693.c
@@ -1,4 +1,4 @@
-/* { dg-do compile }
+/* { dg-do compile } */
 /* { dg-options "-msse2 -O2 -ftree-vectorize" } */
 
 #define N 1024
-- 
2.30.2