testsuite: [arm/mve] Use arm_softfp and arm_hard as needed in MVE tests

Some MVE tests explicitly test a -mfloat-abi=hard option, but we need
to check that the toolchain actually supports it (which may not be the
case for arm-linux-gnueabi* targets). We can thus remove the related
dg-skip directives.

We also make use of dg-add-options arm_v8_1m_mve_fp and arm_v8_1m_mve
instead of duplicating the corresponding options in
dg-additional-options where we keep only -mfloat-abi to override the
option selected by arm_v8_1m_mve_fp.

2020-04-22  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/testsuite/
	* gcc.target/arm/mve/intrinsics/mve_fp_fpu1.c: Use arm_hard_ok
	effective target and arm_v8_1m_mve_fp options.
	* gcc.target/arm/mve/intrinsics/mve_fp_fpu2.c: Use arm_softfp_ok
	effective target and arm_v8_1m_mve_fp options.
	* gcc.target/arm/mve/intrinsics/mve_fpu1.c: Use arm_hard_ok
	effective target and arm_v8_1m_mve options.
	* gcc.target/arm/mve/intrinsics/mve_fpu2.c: Use arm_softfp_ok
	effective target and arm_v8_1m_mve options.

gcc/testsuite/ChangeLog

 2020-04-22  Christophe Lyon  <christophe.lyon@linaro.org>
 
+        * gcc.target/arm/mve/intrinsics/mve_fp_fpu1.c: Use arm_hard_ok
+        effective target and arm_v8_1m_mve_fp options.
+        * gcc.target/arm/mve/intrinsics/mve_fp_fpu2.c: Use arm_softfp_ok
+        effective target and arm_v8_1m_mve_fp options.
+        * gcc.target/arm/mve/intrinsics/mve_fpu1.c: Use arm_hard_ok
+        effective target and arm_v8_1m_mve options.
+        * gcc.target/arm/mve/intrinsics/mve_fpu2.c: Use arm_softfp_ok
+        effective target and arm_v8_1m_mve options.
+
+2020-04-22  Christophe Lyon  <christophe.lyon@linaro.org>
+
         * lib/target-supports.exp (arm_softfp_ok): New effective target.
         (arm_hard_ok): Likewise.
 

gcc/testsuite/gcc.target/arm/mve/intrinsics/mve_fp_fpu1.c

 /* { dg-require-effective-target arm_v8_1m_mve_fp_ok } */
-/* { dg-skip-if "Incompatible float ABI" { *-*-* } { "-mfloat-abi=soft" } {""} } */
-/* { dg-additional-options "-march=armv8.1-m.main+mve.fp -mfloat-abi=hard -mthumb -mfpu=auto --save-temps" } */
+/* { dg-require-effective-target arm_hard_ok } */
+/* { dg-add-options arm_v8_1m_mve_fp } */
+/* { dg-additional-options "-mfloat-abi=hard" } */
 
 #include "arm_mve.h"
 

gcc/testsuite/gcc.target/arm/mve/intrinsics/mve_fp_fpu2.c

 /* { dg-require-effective-target arm_v8_1m_mve_fp_ok } */
-/* { dg-additional-options "-march=armv8.1-m.main+mve.fp -mfloat-abi=softfp -mthumb -mfpu=auto --save-temps" } */
+/* { dg-require-effective-target arm_softfp_ok } */
+/* { dg-add-options arm_v8_1m_mve_fp } */
+/* { dg-additional-options "-mfloat-abi=softfp" } */
 
 #include "arm_mve.h"
 

gcc/testsuite/gcc.target/arm/mve/intrinsics/mve_fpu1.c

 /* { dg-require-effective-target arm_v8_1m_mve_ok } */
-/* { dg-skip-if "Incompatible float ABI" { *-*-* } { "-mfloat-abi=soft" } {""} } */
-/* { dg-additional-options "-march=armv8.1-m.main+mve -mfloat-abi=hard -mthumb -mfpu=auto --save-temps" } */
+/* { dg-require-effective-target arm_hard_ok } */
+/* { dg-add-options arm_v8_1m_mve } */
+/* { dg-additional-options "-mfloat-abi=hard" } */
 
 #include "arm_mve.h"
 

gcc/testsuite/gcc.target/arm/mve/intrinsics/mve_fpu2.c

 /* { dg-require-effective-target arm_v8_1m_mve_ok } */
-/* { dg-skip-if "Incompatible float ABI" { *-*-* } { "-mfloat-abi=soft" } {""} } */
-/* { dg-additional-options "-march=armv8.1-m.main+mve -mfloat-abi=softfp -mthumb -mfpu=auto --save-temps" } */
+/* { dg-require-effective-target arm_softfp_ok } */
+/* { dg-add-options arm_v8_1m_mve } */
+/* { dg-additional-options "-mfloat-abi=softfp" } */
 
 #include "arm_mve.h"