From 6418b07737eb2dc44e9941812c665dc91fa962ed Mon Sep 17 00:00:00 2001
From: Uros Bizjak <uros@gcc.gnu.org>
Date: Mon, 19 Dec 2016 21:23:08 +0100
Subject: i386.md (*popcounthi2_1): New insn_and_split pattern.

	* config/i386/i386.md (*popcounthi2_1): New insn_and_split pattern.

testsuite/ChangeLog:

	* gcc.target/i386/pr59874-3.c: New test.

From-SVN: r243811
---
 gcc/config/i386/i386.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'gcc/config/i386/i386.md')

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 2123914..a88c0b8 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -13221,6 +13221,24 @@
    (set_attr "type" "bitmanip")
    (set_attr "mode" "<MODE>")])
 
+(define_insn_and_split "*popcounthi2_1"
+  [(set (match_operand:SI 0 "register_operand")
+	(popcount:SI
+	  (zero_extend:SI (match_operand:HI 1 "nonimmediate_operand"))))
+   (clobber (reg:CC FLAGS_REG))]
+  "TARGET_POPCNT
+   && can_create_pseudo_p ()"
+  "#"
+  "&& 1"
+  [(const_int 0)]
+{
+  rtx tmp = gen_reg_rtx (HImode);
+
+  emit_insn (gen_popcounthi2 (tmp, operands[1]));
+  emit_insn (gen_zero_extendhisi2 (operands[0], tmp));
+  DONE;
+})
+
 (define_insn "popcounthi2"
   [(set (match_operand:HI 0 "register_operand" "=r")
 	(popcount:HI
-- 
cgit v1.1