math/openblas: fix build on powerpc64 with TARGET=PPC970 and switch to PPC970

This patch fixes build for PPC970 target. Since most people that run FreeBSD on powerpc64 use PowerPC 970 CPU's, switch to it by default and add non-default option to optimize for POWER6 (optimizing for newer POWER doesn't work on BE).

Bump PORTREVISION because of package change.

PR:		238868
Approved by:	phd_kimberlite@yahoo.co.jp (maintainer), linimon (mentor)
Differential Revision:	https://reviews.freebsd.org/D21010

math/openblas/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	openblas
 PORTVERSION=	0.2.20
-PORTREVISION=	9
+PORTREVISION=	10
 DISTVERSIONPREFIX=	v
 PORTEPOCH=	1
 CATEGORIES=	math
@@ -40,6 +40,7 @@ BUILDFLAGS=	FCOMMON_OPT=-frecursive MAKE_NB_JOBS=-1
 OPTIONS_DEFINE=		INTERFACE64 OPENMP
 OPTIONS_DEFINE_i386=	DYNAMIC_ARCH AVX AVX2
 OPTIONS_DEFINE_amd64=	${OPTIONS_DEFINE_i386}
+OPTIONS_DEFINE_powerpc64=	POWER6
 
 .if defined(BATCH) || defined(PACKAGE_BUILDING)
 OPTIONS_DEFAULT_i386=	DYNAMIC_ARCH
@@ -51,11 +52,16 @@ INTERFACE64_DESC=	Use 8 byte integers on 64-bit architectures
 OPENMP_DESC=		Use OpenMP for threading
 AVX_DESC=		Support Advanced Vector Extensions (AVX)
 AVX2_DESC=		Support Advanced Vector Extensions 2 (AVX2)
+POWER6_DESC=		Optimize for POWER6, instead of the default PPC970
 
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == powerpc64
+.  if ${PORT_OPTIONS:MPOWER6}
 TARGET_CPU_ARCH=	POWER6
+.else
+TARGET_CPU_ARCH=	PPC970
+.  endif
 .endif
 
 .if defined(TARGET_CPU_ARCH)

math/openblas/files/patch-common__power.h

@@ -1,5 +1,14 @@
---- common_power.h.orig	2019-06-26 10:25:04 UTC
+--- common_power.h.orig	2017-07-24 04:03:35 UTC
 +++ common_power.h
+@@ -241,7 +241,7 @@ static inline int blas_quickdivide(blasint x, blasint 
+ #define HAVE_PREFETCH
+ #endif
+ 
+-#if defined(POWER3) || defined(POWER6) || defined(PPCG4) || defined(CELL) || defined(POWER8)
++#if defined(POWER3) || defined(POWER6) || defined(PPCG4) || defined(CELL) || defined(POWER8) || defined(PPC970)
+ #define DCBT_ARG	0
+ #else
+ #define DCBT_ARG	8
 @@ -499,7 +499,7 @@ static inline int blas_quickdivide(blasint x, blasint 
  
  #if defined(ASSEMBLER) && !defined(NEEDPARAM)

math/openblas/files/patch-param.h

@@ -0,0 +1,11 @@
+--- param.h.orig	2019-06-28 14:19:50 UTC
++++ param.h
+@@ -1877,7 +1877,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILI
+ #define ZGEMM_DEFAULT_UNROLL_M 2
+ #define ZGEMM_DEFAULT_UNROLL_N 2
+ 
+-#ifdef OS_LINUX
++#if defined(OS_LINUX) || defined(OS_FREEBSD)
+ #if L2_SIZE == 1024976
+ #define SGEMM_DEFAULT_P 320
+ #define DGEMM_DEFAULT_P 256