From: Matt Brown <matthew.brown.dev@gmail.com>
Date: Wed, 14 Jun 2017 06:36:10 +0000 (+1000)
Subject: Optimise cswap for POWER9
X-Git-Tag: upstream/0.2.20^2~14^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4f09030fdc36444709cf3af9041a8043f1f6d83d;p=platform%2Fupstream%2Fopenblas.git

Optimise cswap for POWER9

Use lxvd2x instruction instead of lxvw4x.
lxvd2x performs far better on the new POWER architecture than lxvw4x.
---

diff --git a/kernel/power/cswap_microk_power8.c b/kernel/power/cswap_microk_power8.c
index 1dd03dc8..8d7d0c0b 100644
--- a/kernel/power/cswap_microk_power8.c
+++ b/kernel/power/cswap_microk_power8.c
@@ -42,91 +42,91 @@ static void cswap_kernel_32 (long n, float *x, float *y)
        ".p2align	5		\n"
      "1:				\n\t"
 
-       "lxvw4x		32, 0, %4	\n\t"
-       "lxvw4x		33, %5, %4	\n\t"
-       "lxvw4x		34, %6, %4	\n\t"
-       "lxvw4x		35, %7, %4	\n\t"
-       "lxvw4x		36, %8, %4	\n\t"
-       "lxvw4x		37, %9, %4	\n\t"
-       "lxvw4x		38, %10, %4	\n\t"
-       "lxvw4x		39, %11, %4	\n\t"
+       "lxvd2x		32, 0, %4	\n\t"
+       "lxvd2x		33, %5, %4	\n\t"
+       "lxvd2x		34, %6, %4	\n\t"
+       "lxvd2x		35, %7, %4	\n\t"
+       "lxvd2x		36, %8, %4	\n\t"
+       "lxvd2x		37, %9, %4	\n\t"
+       "lxvd2x		38, %10, %4	\n\t"
+       "lxvd2x		39, %11, %4	\n\t"
 
        "addi		%4, %4, 128	\n\t"
 
-       "lxvw4x		40, 0, %4	\n\t"
-       "lxvw4x		41, %5, %4	\n\t"
-       "lxvw4x		42, %6, %4	\n\t"
-       "lxvw4x		43, %7, %4	\n\t"
-       "lxvw4x		44, %8, %4	\n\t"
-       "lxvw4x		45, %9, %4	\n\t"
-       "lxvw4x		46, %10, %4	\n\t"
-       "lxvw4x		47, %11, %4	\n\t"
+       "lxvd2x		40, 0, %4	\n\t"
+       "lxvd2x		41, %5, %4	\n\t"
+       "lxvd2x		42, %6, %4	\n\t"
+       "lxvd2x		43, %7, %4	\n\t"
+       "lxvd2x		44, %8, %4	\n\t"
+       "lxvd2x		45, %9, %4	\n\t"
+       "lxvd2x		46, %10, %4	\n\t"
+       "lxvd2x		47, %11, %4	\n\t"
 
        "addi		%4, %4, -128	\n\t"
 
-       "lxvw4x		48, 0, %3	\n\t"
-       "lxvw4x		49, %5, %3	\n\t"
-       "lxvw4x		50, %6, %3	\n\t"
-       "lxvw4x		51, %7, %3	\n\t"
-       "lxvw4x		0, %8, %3	\n\t"
-       "lxvw4x		1, %9, %3	\n\t"
-       "lxvw4x		2, %10, %3	\n\t"
-       "lxvw4x		3, %11, %3	\n\t"
+       "lxvd2x		48, 0, %3	\n\t"
+       "lxvd2x		49, %5, %3	\n\t"
+       "lxvd2x		50, %6, %3	\n\t"
+       "lxvd2x		51, %7, %3	\n\t"
+       "lxvd2x		0, %8, %3	\n\t"
+       "lxvd2x		1, %9, %3	\n\t"
+       "lxvd2x		2, %10, %3	\n\t"
+       "lxvd2x		3, %11, %3	\n\t"
 
        "addi		%3, %3, 128	\n\t"
 
-       "lxvw4x		4, 0, %3	\n\t"
-       "lxvw4x		5, %5, %3	\n\t"
-       "lxvw4x		6, %6, %3	\n\t"
-       "lxvw4x		7, %7, %3	\n\t"
-       "lxvw4x		8, %8, %3	\n\t"
-       "lxvw4x		9, %9, %3	\n\t"
-       "lxvw4x		10, %10, %3	\n\t"
-       "lxvw4x		11, %11, %3	\n\t"
+       "lxvd2x		4, 0, %3	\n\t"
+       "lxvd2x		5, %5, %3	\n\t"
+       "lxvd2x		6, %6, %3	\n\t"
+       "lxvd2x		7, %7, %3	\n\t"
+       "lxvd2x		8, %8, %3	\n\t"
+       "lxvd2x		9, %9, %3	\n\t"
+       "lxvd2x		10, %10, %3	\n\t"
+       "lxvd2x		11, %11, %3	\n\t"
 
        "addi		%3, %3, -128	\n\t"
 
-       "stxvw4x		32, 0, %3	\n\t"
-       "stxvw4x		33, %5, %3	\n\t"
-       "stxvw4x		34, %6, %3	\n\t"
-       "stxvw4x		35, %7, %3	\n\t"
-       "stxvw4x		36, %8, %3	\n\t"
-       "stxvw4x		37, %9, %3	\n\t"
-       "stxvw4x		38, %10, %3	\n\t"
-       "stxvw4x		39, %11, %3	\n\t"
+       "stxvd2x		32, 0, %3	\n\t"
+       "stxvd2x		33, %5, %3	\n\t"
+       "stxvd2x		34, %6, %3	\n\t"
+       "stxvd2x		35, %7, %3	\n\t"
+       "stxvd2x		36, %8, %3	\n\t"
+       "stxvd2x		37, %9, %3	\n\t"
+       "stxvd2x		38, %10, %3	\n\t"
+       "stxvd2x		39, %11, %3	\n\t"
 
        "addi		%3, %3, 128	\n\t"
 
-       "stxvw4x		40, 0, %3	\n\t"
-       "stxvw4x		41, %5, %3	\n\t"
-       "stxvw4x		42, %6, %3	\n\t"
-       "stxvw4x		43, %7, %3	\n\t"
-       "stxvw4x		44, %8, %3	\n\t"
-       "stxvw4x		45, %9, %3	\n\t"
-       "stxvw4x		46, %10, %3	\n\t"
-       "stxvw4x		47, %11, %3	\n\t"
+       "stxvd2x		40, 0, %3	\n\t"
+       "stxvd2x		41, %5, %3	\n\t"
+       "stxvd2x		42, %6, %3	\n\t"
+       "stxvd2x		43, %7, %3	\n\t"
+       "stxvd2x		44, %8, %3	\n\t"
+       "stxvd2x		45, %9, %3	\n\t"
+       "stxvd2x		46, %10, %3	\n\t"
+       "stxvd2x		47, %11, %3	\n\t"
 
        "addi		%3, %3, 128	\n\t"
 
-       "stxvw4x		48, 0, %4	\n\t"
-       "stxvw4x		49, %5, %4	\n\t"
-       "stxvw4x		50, %6, %4	\n\t"
-       "stxvw4x		51, %7, %4	\n\t"
-       "stxvw4x		0, %8, %4	\n\t"
-       "stxvw4x		1, %9, %4	\n\t"
-       "stxvw4x		2, %10, %4	\n\t"
-       "stxvw4x		3, %11, %4	\n\t"
+       "stxvd2x		48, 0, %4	\n\t"
+       "stxvd2x		49, %5, %4	\n\t"
+       "stxvd2x		50, %6, %4	\n\t"
+       "stxvd2x		51, %7, %4	\n\t"
+       "stxvd2x		0, %8, %4	\n\t"
+       "stxvd2x		1, %9, %4	\n\t"
+       "stxvd2x		2, %10, %4	\n\t"
+       "stxvd2x		3, %11, %4	\n\t"
 
        "addi		%4, %4, 128	\n\t"
 
-       "stxvw4x		4, 0, %4	\n\t"
-       "stxvw4x		5, %5, %4	\n\t"
-       "stxvw4x		6, %6, %4	\n\t"
-       "stxvw4x		7, %7, %4	\n\t"
-       "stxvw4x		8, %8, %4	\n\t"
-       "stxvw4x		9, %9, %4	\n\t"
-       "stxvw4x		10, %10, %4	\n\t"
-       "stxvw4x		11, %11, %4	\n\t"
+       "stxvd2x		4, 0, %4	\n\t"
+       "stxvd2x		5, %5, %4	\n\t"
+       "stxvd2x		6, %6, %4	\n\t"
+       "stxvd2x		7, %7, %4	\n\t"
+       "stxvd2x		8, %8, %4	\n\t"
+       "stxvd2x		9, %9, %4	\n\t"
+       "stxvd2x		10, %10, %4	\n\t"
+       "stxvd2x		11, %11, %4	\n\t"
 
        "addi		%4, %4, 128	\n\t"