testsuite: Enable p9-lxvx-stxvx testcases and fold-vec-extract

This patch enables the p9-lxvx-stxvx testcases with appropriate
requirements.  It also adjusts the expected matching instructions
in the fold-vec-extract testcases for BE.

gcc/testsuite/ChangeLog:

	* gcc.target/powerpc/fold-vec-extract-float.p9.c: rldicl and
	subfic only for target LE.
	* gcc.target/powerpc/fold-vec-extract-longlong.p9.c: xori only
	for target LE.  Adjust mfvsrd and add mfvsrld for BE.
	* gcc.target/powerpc/fold-vec-extract-short.p9.c: vextuhrx for LE.
	vextuhlx for BE.
	* gcc.target/powerpc/p9-lxvx-stxvx-1.c: Remove target.
	* gcc.target/powerpc/p9-lxvx-stxvx-2.c: Remove target.
	* gcc.target/powerpc/p9-lxvx-stxvx-3.c: Remove target. Require
	float128

gcc/testsuite/gcc.target/powerpc/fold-vec-extract-float.p9.c

@@ -6,8 +6,8 @@
 /* { dg-options "-mdejagnu-cpu=power9 -O2 " } */
 
 /* { dg-final { scan-assembler-times {\mxscvspdp\M} 2 } } */
-/* { dg-final { scan-assembler-times {\mrldicl\M} 1 } } */
-/* { dg-final { scan-assembler-times {\msubfic\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mrldicl\M} 1 { target le } } } */
+/* { dg-final { scan-assembler-times {\msubfic\M} 1 { target le } } } */
 /* { dg-final { scan-assembler-times {\msldi\M} 1 } } */
 /* { dg-final { scan-assembler-times {\mmtvsrdd\M} 1 } } */
 /* { dg-final { scan-assembler-times {\mvslo\M} 1 } } */

gcc/testsuite/gcc.target/powerpc/fold-vec-extract-longlong.p9.c

@@ -1,5 +1,5 @@
 /* Verify that overloaded built-ins for vec_extract() with long long
-   inputs produce the right code for a P9 (LE) target.  */
+   inputs produce the right code for a P9 target.  */
 
 /* { dg-do compile { target lp64 } } */
 /* { dg-require-effective-target powerpc_p9vector_ok } */
@@ -10,11 +10,13 @@
 // p9 vars:  xori, rldic, mtvsrdd, vslo, mfvsrd
 
 /* results. */
-/* { dg-final { scan-assembler-times {\mxori\M} 3 } } */
+/* { dg-final { scan-assembler-times {\mxori\M} 3 { target le } } } */
 /* { dg-final { scan-assembler-times {\mrldic\M} 3 } } */
 /* { dg-final { scan-assembler-times {\mmtvsrdd\M} 3 } } */
 /* { dg-final { scan-assembler-times {\mvslo\M} 3 } } */
-/* { dg-final { scan-assembler-times {\mmfvsrd\M} 6 } } */
+/* { dg-final { scan-assembler-times {\mmfvsrd\M} 6 { target le } } } */
+/* { dg-final { scan-assembler-times {\mmfvsrd\M} 3 { target be } } } */
+/* { dg-final { scan-assembler-times {\mmfvsrld\M} 3 { target be } } } */
 
 #include <altivec.h>
 

gcc/testsuite/gcc.target/powerpc/fold-vec-extract-short.p9.c

@@ -1,17 +1,18 @@
 /* Verify that overloaded built-ins for vec_extract() with short
-   inputs produce the right code for a P9 (LE) target.  */
+   inputs produce the right code for a P9 target.  */
 
 /* { dg-do compile { target lp64 } } */
 /* { dg-require-effective-target powerpc_p9vector_ok } */
 /* { dg-options "-mdejagnu-cpu=power9 -O2" } */
 
-// six tests total. Targeting P9 LE.
+// six tests total. Targeting P9.
 // p9 (le) variable offset: slwi, vextuhlx, extsh
 // p9 (le) const offset:  li, vextuhlx, extsh
 
 /* { dg-final { scan-assembler-times {\mslwi\M} 3 } } */
 /* { dg-final { scan-assembler-times {\mli\M} 3 } } */
-/* { dg-final { scan-assembler-times "vextuhrx" 6 } } */
+/* { dg-final { scan-assembler-times "vextuhrx" 6 { target le } } } */
+/* { dg-final { scan-assembler-times "vextuhlx" 6 { target be } } } */
 /* { dg-final { scan-assembler-times {\mextsh\M} 2 } } */
 
 #include <altivec.h>

gcc/testsuite/gcc.target/powerpc/p9-lxvx-stxvx-1.c

@@ -1,4 +1,4 @@
-/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-do compile } */
 /* { dg-require-effective-target powerpc_p9vector_ok } */
 /* { dg-options "-mdejagnu-cpu=power9 -O3" } */
 /* { dg-final { scan-assembler "lxvx" } } */

gcc/testsuite/gcc.target/powerpc/p9-lxvx-stxvx-2.c

@@ -1,4 +1,4 @@
-/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-do compile } */
 /* { dg-require-effective-target powerpc_p9vector_ok } */
 /* { dg-options "-mdejagnu-cpu=power9 -O1" } */
 /* { dg-final { scan-assembler "lxvx" } } */

gcc/testsuite/gcc.target/powerpc/p9-lxvx-stxvx-3.c

@@ -1,4 +1,5 @@
-/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-do compile } */
+/* { dg-require-effective-target ppc_float128_sw } */
 /* { dg-options "-mdejagnu-cpu=power9 -O3 -mfloat128" } */
 /* { dg-require-effective-target powerpc_p9vector_ok } */
 /* { dg-final { scan-assembler "lxvx" } } */