testsuite: arm: Use effective-target for pacbti-m-predef* tests

Update test cases to use -mcpu=unset/-march=unset feature introduced in
r15-3606-g7d6c6a0d15c.

gcc/testsuite/ChangeLog:

	* gcc.target/arm/acle/pacbti-m-predef-1.c: Use effective-target
	arm_arch_v8_1m_main.
	* gcc.target/arm/acle/pacbti-m-predef-2.c: Likewise.
	* gcc.target/arm/acle/pacbti-m-predef-3.c: Likewise.
	* gcc.target/arm/acle/pacbti-m-predef-4.c: Likewise.
	* gcc.target/arm/acle/pacbti-m-predef-5.c: Likewise.
	* gcc.target/arm/acle/pacbti-m-predef-6.c: Likewise.
	* gcc.target/arm/acle/pacbti-m-predef-8.c: Likewise.
	* gcc.target/arm/acle/pacbti-m-predef-9.c: Likewise.
	* gcc.target/arm/acle/pacbti-m-predef-10.c: Likewise.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-1.c

 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-options "-march=armv8.1-m.main+fp -mbranch-protection=pac-ret+bti -mfloat-abi=hard --save-temps" } */
+/* { dg-options "-mbranch-protection=pac-ret+bti -mfloat-abi=hard --save-temps" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 #if !defined (__ARM_FEATURE_BTI_DEFAULT)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be defined."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-10.c

 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-additional-options "-march=armv8.1-m.main+fp -mbranch-protection=bti+pac-ret -mfloat-abi=hard" } */
+/* { dg-additional-options "-mbranch-protection=bti+pac-ret -mfloat-abi=hard" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 #if (__ARM_FEATURE_BTI_DEFAULT != 1)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be defined to 1."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-2.c

 /* { dg-do run } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_pacbti_link } */
 /* { dg-require-effective-target mbranch_protection_ok } */
 /* { dg-require-effective-target arm_pacbti_hw } */
-/* { dg-options "-march=armv8.1-m.main+pacbti+fp -mbranch-protection=bti+pac-ret+leaf -mthumb -mfloat-abi=hard" } */
+/* { dg-options "-mbranch-protection=bti+pac-ret+leaf -mfloat-abi=hard" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #if !defined (__ARM_FEATURE_BTI_DEFAULT)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be defined."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-3.c

 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-options "-march=armv8.1-m.main+fp -mbranch-protection=pac-ret+leaf -mfloat-abi=hard --save-temps" } */
+/* { dg-options "-mbranch-protection=pac-ret+leaf -mfloat-abi=hard --save-temps" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 #if defined (__ARM_FEATURE_BTI_DEFAULT)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be undefined."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-4.c

 /* { dg-do run } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_pacbti_link } */
 /* { dg-require-effective-target arm_pacbti_hw } */
-/* { dg-options "-march=armv8.1-m.main+pacbti+fp -mbranch-protection=pac-ret -mthumb -mfloat-abi=hard" } */
+/* { dg-options "-mbranch-protection=pac-ret -mfloat-abi=hard" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #if !defined (__ARM_FEATURE_PAC_DEFAULT)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be defined."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-5.c

 /* { dg-do run } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_link } */
 /* { dg-require-effective-target mbranch_protection_ok } */
 /* { dg-require-effective-target arm_pacbti_hw } */
-/* { dg-skip-if "do not override march" { *-*-* } { "-march=*" } { "-march=armv8.1-m.main" } } */
-/* { dg-additional-options "-march=armv8.1-m.main -mbranch-protection=bti+pac-ret" } */
+/* { dg-additional-options "-mbranch-protection=bti+pac-ret" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 #if !defined (__ARM_FEATURE_BTI_DEFAULT)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be defined."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-6.c

 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-additional-options "-march=armv8.1-m.main+fp -mbranch-protection=bti -mfloat-abi=hard --save-temps" } */
+/* { dg-additional-options "-mbranch-protection=bti -mfloat-abi=hard --save-temps" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 #if !defined (__ARM_FEATURE_BTI_DEFAULT)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be defined."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-8.c

 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-additional-options "-march=armv8.1-m.main+fp -mbranch-protection=bti+pac-ret+leaf -mfloat-abi=hard" } */
+/* { dg-additional-options "-mbranch-protection=bti+pac-ret+leaf -mfloat-abi=hard" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 #if (__ARM_FEATURE_BTI_DEFAULT != 1)
 #error "Feature test macro __ARM_FEATURE_BTI_DEFAULT should be defined to 1."

gcc/testsuite/gcc.target/arm/acle/pacbti-m-predef-9.c

 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-additional-options "-march=armv8.1-m.main+fp -mbranch-protection=pac-ret -mfloat-abi=hard" } */
+/* { dg-additional-options "-mbranch-protection=pac-ret -mfloat-abi=hard" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 #if (__ARM_FEATURE_PAC_DEFAULT != 1)
 #error "Feature test macro __ARM_FEATURE_PAC_DEFAULT should be defined to 1."