From ac173024954b4e620c80ab81715bc5d50907369a Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hongjiu.lu@intel.com>
Date: Thu, 20 Jun 2019 15:30:54 +0000
Subject: i386: Generate standard floating point scalar operation patterns

Standard floating point scalar operation patterns for combiner, which
preserve the rest of the vector, look like

     (vec_merge:V2DF
       (vec_duplicate:V2DF (reg:DF 87))
       (reg/v:V2DF 85 [ x ])
       (const_int 1 [0x1])]))

and

     (vec_merge:V2DF
       (vec_duplicate:V2DF
         (op:DF (vec_select:DF (reg/v:V2DF 85 [ x ])
                (parallel [ (const_int 0 [0])]))
         (reg:DF 87))
       (reg/v:V2DF 85 [ x ])
       (const_int 1 [0x1])]))

This patch adds and generates such standard floating point scalar
operation patterns for +, -, *, /, > and <.

Tested on x86-64.

gcc/

	PR target/54855
	* config/i386/i386-expand.c (ix86_expand_vector_set): Generate
	standard scalar operation pattern for V2DF.
	* config/i386/sse.md (*<sse>_vm<plusminus_insn><mode>3): New.
	(*<sse>_vm<multdiv_mnemonic><mode>3): Likewise.
	(*ieee_<ieee_maxmin><mode>3): Likewise.
	(vec_setv2df_0): Likewise.

gcc/testsuite/

	PR target/54855
	* gcc.target/i386/pr54855-1.c: New test.
	* gcc.target/i386/pr54855-2.c: Likewise.
	* gcc.target/i386/pr54855-3.c: Likewise.
	* gcc.target/i386/pr54855-4.c: Likewise.
	* gcc.target/i386/pr54855-5.c: Likewise.
	* gcc.target/i386/pr54855-6.c: Likewise.
	* gcc.target/i386/pr54855-7.c: Likewise.
	* gcc.target/i386/pr54855-8.c: Likewise.
	* gcc.target/i386/pr54855-9.c: Likewise.
	* gcc.target/i386/pr54855-10.c: Likewise.

From-SVN: r272511
---
 gcc/ChangeLog | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'gcc/ChangeLog')

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 06e4ef4..d4c3220 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2019-06-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/54855
+	* config/i386/i386-expand.c (ix86_expand_vector_set): Generate
+	standard scalar operation pattern for V2DF.
+	* config/i386/sse.md (*<sse>_vm<plusminus_insn><mode>3): New.
+	(*<sse>_vm<multdiv_mnemonic><mode>3): Likewise.
+	(*ieee_<ieee_maxmin><mode>3): Likewise.
+	(vec_setv2df_0): Likewise.
+
 2019-06-20  Jan Hubicka  <jh@suse.cz>
 
 	* tree-ssa-alias.c (aliasing_component_refs_p): Remove ref2_is_decl
-- 
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