From: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Date: Mon, 20 Dec 2021 13:15:18 +0000 (+0000)
Subject: Skip optimizations for big-endian PowerPC.
X-Git-Tag: archive/raspbian/3.10.3-12+rpi1^2~6
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=5c446f0b02e3a008e78ba7baa64b894d78772e28;p=atlas.git

Skip optimizations for big-endian PowerPC.

Bug-Debian: https://bugs.debian.org/766695
Forwarded: http://sourceforge.net/p/math-atlas/patches/65/
Reviewed-by: Sébastien Villemot <sebastien@debian.org>
Last-Update: 2014-10-28

Some of the existing optimized files/cases for PowerPC
contain assembly instructions with implicit big-endian
behavior - thus incorrect for the little-endian mode -
incurring tests failures during the build (i.e., FTBFS).
This is being worked on; this is the workaround for now.

Note: this is an alternative for Michael Normand's patch
'atlas.3.10.2-ppc64le_do_not_use_files_with_lvx.patch',
in order not to touch file lists/indexes, but only C
source code, so the C preprocessor can avoid code per-arch.

For more details, see:
https://bugzilla.redhat.com/show_bug.cgi?id=1080073#c40

Gbp-Pq: Name ppc64el-ifdef-files-with-lvx.patch
---

diff --git a/tune/blas/gemm/CASES/ATL_cmm4x4x128_av.c b/tune/blas/gemm/CASES/ATL_cmm4x4x128_av.c
index 59747c0..980d852 100644
--- a/tune/blas/gemm/CASES/ATL_cmm4x4x128_av.c
+++ b/tune/blas/gemm/CASES/ATL_cmm4x4x128_av.c
@@ -7,6 +7,11 @@
  * meaning that this kernel will do an extra store of vector C to memory
  * for load by the scalar FPU.
  */
+
+#if defined(__powerpc64__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+/* FIXME: port to little-endian powerpc64. */
+#else
+
 #include "atlas_asm.h"
 
 #if !defined(ATL_AS_OSX_PPC) && !defined(ATL_GAS_LINUX_PPC)
@@ -4257,3 +4262,5 @@ MPEELEDU:
         ld      r3, FST(r1)
         addi    r1, r1, FSIZE
         blr
+
+#endif	/* little-endian powerpc64 */
diff --git a/tune/blas/gemm/CASES/ATL_dmm4x4x80_ppc.c b/tune/blas/gemm/CASES/ATL_dmm4x4x80_ppc.c
index ec2f78b..b5a4ae0 100644
--- a/tune/blas/gemm/CASES/ATL_dmm4x4x80_ppc.c
+++ b/tune/blas/gemm/CASES/ATL_dmm4x4x80_ppc.c
@@ -28,6 +28,10 @@
  *
  */
 
+#if defined(__powerpc64__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+/* FIXME: port to little-endian powerpc64. */
+#else
+
 #include "atlas_asm.h"
 /*
  * NOTE: this kernel written by R. Clint Whaley, but it uses two key ideas
@@ -7502,3 +7506,5 @@ DONE:
         addi    r1, r1, FSIZE
 #endif
         blr
+
+#endif  /* little-endian powerpc64 */
diff --git a/tune/blas/gemm/CASES/ATL_dmm8x4x2_vsx.c b/tune/blas/gemm/CASES/ATL_dmm8x4x2_vsx.c
index 2761a39..1feb0ca 100644
--- a/tune/blas/gemm/CASES/ATL_dmm8x4x2_vsx.c
+++ b/tune/blas/gemm/CASES/ATL_dmm8x4x2_vsx.c
@@ -27,6 +27,10 @@
  *
  */
 
+#if defined(__powerpc64__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+/* FIXME: port to little-endian powerpc64. */
+#else
+
 #include <altivec.h>
 #include "atlas_misc.h"
 #include "atlas_prefetch.h"               /* ATL_pfl1R, ATL_pfl1W */
@@ -659,3 +663,5 @@ void ATL_USERMM
         }
     }
 }
+
+#endif  /* little-endian powerpc64 */
diff --git a/tune/blas/gemm/CASES/ATL_smm4x4x128_av.c b/tune/blas/gemm/CASES/ATL_smm4x4x128_av.c
index b2bf952..0eb8866 100644
--- a/tune/blas/gemm/CASES/ATL_smm4x4x128_av.c
+++ b/tune/blas/gemm/CASES/ATL_smm4x4x128_av.c
@@ -28,6 +28,9 @@
  *
  */
 
+#if defined(__powerpc64__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+/* FIXME: port to little-endian powerpc64. */
+#else
 
 #include "atlas_asm.h"
 
@@ -8340,3 +8343,5 @@ MPEELEDU:
         ld      r3, FST(r1)
         addi    r1, r1, FSIZE
         blr
+
+#endif  /* little-endian powerpc64 */
diff --git a/tune/blas/gemm/CASES/ATL_smm8x2x4_av.c b/tune/blas/gemm/CASES/ATL_smm8x2x4_av.c
index 0e0cb5b..a959929 100644
--- a/tune/blas/gemm/CASES/ATL_smm8x2x4_av.c
+++ b/tune/blas/gemm/CASES/ATL_smm8x2x4_av.c
@@ -27,6 +27,10 @@
  *
  */
 
+#if defined(__powerpc64__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+/* FIXME: port to little-endian powerpc64. */
+#else
+
 #include <altivec.h>
 #include "atlas_misc.h"
 #include "atlas_prefetch.h"               /* ATL_pfl1R, ATL_pfl1W */
@@ -326,3 +330,5 @@ void ATL_USERMM
         }
     }
 }
+
+#endif  /* little-endian powerpc64 */