Fix altivec-7 issues on Power 6

GCC Maintainers:

Test file gcc/testsuite/gcc.target/powerpc/altivec-7.c has issues when
compiling for Power 6.  Specifically, the new tests that were added for
vec_unpackh and vec_unpackl that return a long long bool.  The long
long type is not compatible on Power 6 with just the "-maltivec"
command line option.  

This patch removes the tests for vec_unpackh and vec_unpackl that
return a long long bool from altivec-7.c and puts them in a new file
altivec-37.c using the "=mvsx" option.  Additionally, tests for the two
builtins returning long long int are added to altivec-37.  

The patch was tested on:

    powerpc64le-unknown-linux-gnu (Power 8 LE)   
    powerpc64le-unknown-linux-gnu (Power 9 LE)
    powerpc64-unknown-linux-gnu (Power 8 BE)

With no regressions.

Additionally, hand testing with the commands 

  make -k check-gcc RUNTESTFLAGS="-mcpu=power6 --target_board=unix'{-m64,-m32}' powerpc.exp=altivec-7.c"  

  make -k check-gcc RUNTESTFLAGS="-mcpu=power6 --target_board=unix'{-m64,-m32}' powerpc.exp=altivec-37.c" 

were run on all three configurations to ensure compiling for Power 6 works everywhere.

Please let me know if the patch looks OK for GCC mainline. 

                         Carl Love

---------------------------------------------------------------------

gcc/testsuite/ChangeLog:

2018-06-08  Carl Love  <cel@us.ibm.com>
	* gcc.target/powerpc/altivec-7.c (main): Remove tests
	vec_unpackh(vecubi[0]) and vec_unpackl(vecubi[0]).  Remove
	duplicate dg-final for xxlxor.  Update dg-final instruction
	counts.
	* gcc.target/powerpc/altivec-37.c (main): New file for
	tests vec_unpackh(vecubi[0]) and vec_unpackl(vecubi[0]).
---
 gcc/testsuite/gcc.target/powerpc/altivec-37.c | 32 +++++++++++++++++++++++++++
 gcc/testsuite/gcc.target/powerpc/altivec-7.c  |  9 +-------
 2 files changed, 33 insertions(+), 8 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/powerpc/altivec-37.c

GCC maintainers:

Aargh!!  I attached an old copy of the patch to the original message. 
Guess it is time to do some house cleaning.  

              Carl Love
-----------------------------------

gcc/testsuite/ChangeLog:

2018-06-08  Carl Love  <cel@us.ibm.com>
	* gcc.target/powerpc/altivec-7.c (main): Remove tests
	vec_unpackh(vecubi[0]) and vec_unpackl(vecubi[0]) returning
	long long bool.  Remove duplicate dg-final for xxlxor.  Update
	dg-final instruction counts.
	* gcc.target/powerpc/altivec-37.c (main): New file for
	tests vec_unpackh and vec_unpackl returning 	long long bool and
	long long int.
---
 gcc/testsuite/gcc.target/powerpc/altivec-37.c | 32 +++++++++++++++++++++++++++
 gcc/testsuite/gcc.target/powerpc/altivec-7.c  |  9 +-------
 2 files changed, 33 insertions(+), 8 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/powerpc/altivec-37.c

diff --git a/gcc/testsuite/gcc.target/powerpc/altivec-37.c b/gcc/testsuite/gcc.target/powerpc/altivec-37.c
new file mode 100644
index 0000000..362b6ec
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/altivec-37.c
@@ -0,0 +1,32 @@
+/* { dg-do compile { target powerpc*-*-* } } */
+/* { dg-require-effective-target powerpc_vsx_ok } */
+/* { dg-options "-mpower8-vector -mvsx" } */
+
+#include <altivec.h>
+
+vector bool int *vecubi;
+vector bool long long *vecublli;
+vector signed int *vecsi;
+vector signed long long int *vecslli;
+
+int main ()
+{
+
+  /*  use of ‘long long’ in AltiVec types requires -mvsx */
+  /* __builtin_altivec_vupkhsw and __builtin_altivec_vupklsw
+     requires the -mpower8-vector option */
+  *vecublli++ = vec_unpackh(vecubi[0]);
+  *vecublli++ = vec_unpackl(vecubi[0]);
+  *vecslli++ = vec_unpackh(vecsi[0]);
+  *vecslli++ = vec_unpackl(vecsi[0]);
+  
+  return 0;
+}
+
+/* Expected results:
+     vec_unpackh                    vupklsw
+     vec_unpackl                    vupkhsw
+*/
+
+/* { dg-final { scan-assembler-times "vupklsw" 2 } } */
+/* { dg-final { scan-assembler-times "vupkhsw" 2 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/altivec-7.c b/gcc/testsuite/gcc.target/powerpc/altivec-7.c
index 6aad9a9..b61092c 100644
--- a/gcc/testsuite/gcc.target/powerpc/altivec-7.c
+++ b/gcc/testsuite/gcc.target/powerpc/altivec-7.c
@@ -18,7 +18,6 @@ vector unsigned int *vecuint;
 vector bool int *vecubi;
 vector bool char *vecubci;
 vector bool short int *vecubsi;
-vector bool long long int *vecublli;
 vector unsigned short *vecushort;
 vector bool int *vecbint;
 vector float *vecfloat;
@@ -50,13 +49,11 @@ int main ()
 
   *vecubi++ = vec_unpackh(vecubsi[0]);
   *vecuint++ = vec_unpackh(varpixel[0]);
-  *vecublli++ = vec_unpackh(vecubi[0]);
   *vecubsi++ = vec_unpackh(vecubci[0]);
   *vecshort++ = vec_unpackh(vecchar[0]);
 
   *vecubi++ = vec_unpackl(vecubsi[0]);
   *vecuint++ = vec_unpackl(varpixel[0]);
-  *vecublli++ = vec_unpackl(vecubi[0]);
   *vecubsi++ = vec_unpackl(vecubci[0]);
   *vecshort++ = vec_unpackl(vecchar[0]);
   
@@ -72,11 +69,9 @@ int main ()
      vec_lvewx                      lvewx
      vec_unpackh                    vupklsh
      vec_unpackh                    vupklpx
-     vec_unpackh                    vupklsw
      vec_unpackh                    vupklsb
      vec_unpackl                    vupkhsh
      vec_unpackl                    vupkhpx
-     vec_unpackl                    vupkhsw
      vec_unpackl                    vupkhsb
      vec_andc                       xxnor
                                     xxland
@@ -90,7 +85,7 @@ int main ()
 /* { dg-final { scan-assembler-times "vpkpx" 2 } } */
 /* { dg-final { scan-assembler-times "vmulesb" 1 } } */
 /* { dg-final { scan-assembler-times "vmulosb" 1 } } */
-/* { dg-final { scan-assembler-times {\mlxvd2x\M|\mlxv\M} 44 { target le } } } */
+/* { dg-final { scan-assembler-times {\mlxvd2x\M|\mlxv\M} 42 { target le } } } */
 /* { dg-final { scan-assembler-times {\mlxvd2x\M|\mlxv\M} 4 { target be } } } */
 /* { dg-final { scan-assembler-times "lvewx" 2 } } */
 /* { dg-final { scan-assembler-times "lvxl" 1 } } */
@@ -100,12 +95,10 @@ int main ()
 /* { dg-final { scan-assembler-times "xxland" 4 } } */
 /* { dg-final { scan-assembler-times "xxlxor" 5 } } */
 /* { dg-final { scan-assembler-times "xxlandc" 0 } } */
-/* { dg-final { scan-assembler-times "xxlxor" 5 } } */
 /* { dg-final { scan-assembler-times "lvx" 1 } } */
 /* { dg-final { scan-assembler-times "vmsumubm" 1 } } */
 /* { dg-final { scan-assembler-times "vupklpx" 1 } } */
 /* { dg-final { scan-assembler-times "vupklsx" 0 } } */
 /* { dg-final { scan-assembler-times "vupklsb" 2 } } */
 /* { dg-final { scan-assembler-times "vupkhpx" 1 } } */
-/* { dg-final { scan-assembler-times "vupkhsw" 1 } } */
 /* { dg-final { scan-assembler-times "vupkhsb" 2 } } */

On Fri, Jun 08, 2018 at 01:40:02PM -0700, Carl Love wrote:
> diff --git a/gcc/testsuite/gcc.target/powerpc/altivec-37.c b/gcc/testsuite/gcc.target/powerpc/altivec-37.c
> new file mode 100644
> index 0000000..362b6ec
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/powerpc/altivec-37.c
> @@ -0,0 +1,32 @@
> +/* { dg-do compile { target powerpc*-*-* } } */
> +/* { dg-require-effective-target powerpc_vsx_ok } */
> +/* { dg-options "-mpower8-vector -mvsx" } */

This needs p8vector_ok instead of vsx_ok I think?

Otherwise okay.  Thanks!


Segher