On Wed, Jun 29, 2016 at 03:33:24PM -0400, Michael Meissner wrote:
> This patch adds support to generate the ISA 3.0 VEXTRACTUB, VEXTRACTUH, and
> XXEXTRACTUW instructions to extract a constant element from the small vector
> integer types. I also added support to generate STXSIWX if a DImode is in an
> Altivec register (which is needed for this patch when extracting char or short
> elements).
>
> I built this on a little endian power8 system, and there were no regressions
> in
> make check. Is it ok to install in the trunk?
Note, I discovered that the second test (p9-extract-2.c) had the wrong number
of '\'s for the alternative, and it would fail.
This is the correct patch. Sorry about that.
Index: gcc/testsuite/gcc.target/powerpc/p9-extract-2.c
===================================================================
--- gcc/testsuite/gcc.target/powerpc/p9-extract-2.c
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/testsuite/gcc.target/powerpc)
(revision 0)
+++ gcc/testsuite/gcc.target/powerpc/p9-extract-2.c
(.../gcc/testsuite/gcc.target/powerpc) (revision 237858)
@@ -0,0 +1,27 @@
+/* { dg-do compile { target { powerpc64*-*-* && lp64 } } } */
+/* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } {
"-mcpu=power9" } } */
+/* { dg-require-effective-target powerpc_p9vector_ok } */
+/* { dg-options "-mcpu=power9 -O2" } */
+
+#include <altivec.h>
+
+void extract_int_0 (int *p, vector int a) { *p = vec_extract (a, 0); }
+void extract_int_3 (int *p, vector int a) { *p = vec_extract (a, 3); }
+
+void extract_short_0 (short *p, vector short a) { *p = vec_extract (a, 0); }
+void extract_short_3 (short *p, vector short a) { *p = vec_extract (a, 7); }
+
+void extract_schar_0 (signed char *p, vector signed char a) { *p = vec_extract
(a, 0); }
+void extract_schar_3 (signed char *p, vector signed char a) { *p = vec_extract
(a, 15); }
+
+/* { dg-final { scan-assembler "vextractub" } } */
+/* { dg-final { scan-assembler "vextractuh" } } */
+/* { dg-final { scan-assembler "xxextractuw" } } */
+/* { dg-final { scan-assembler "stxsibx" } } */
+/* { dg-final { scan-assembler "stxsihx" } } */
+/* { dg-final { scan-assembler "stfiwx\|stxsiwx" } } */
+/* { dg-final { scan-assembler-not "mfvsrd" } } */
+/* { dg-final { scan-assembler-not "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "stxv" } } */
+/* { dg-final { scan-assembler-not "lwa" } } */
+/* { dg-final { scan-assembler-not "stw" } } */
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.vnet.ibm.com, phone: +1 (978) 899-4797
