testsuite: arm: Use effective-target for bti* and pac* tests

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

gcc/testsuite/ChangeLog:

	* gcc.target/arm/pac-1.c: Use effective-target
	arm_arch_v8_1m_main_pacbti.
	* gcc.target/arm/pac-2.c: Likewise.
	* gcc.target/arm/pac-3.c: Likewise.
	* gcc.target/arm/pac-4.c: Likewise.
	* gcc.target/arm/pac-5.c: Likewise.
	* gcc.target/arm/pac-7.c: Likewise.
	* gcc.target/arm/pac-8.c: Likewise.
	* gcc.target/arm/pac-9.c: Likewise.
	* gcc.target/arm/pac-10.c: Likewise.
	* gcc.target/arm/pac-11.c: Likewise.
	* gcc.target/arm/pac-12.c: Added option "-mcpu=unset".
	* gcc.target/arm/pac-13.c: Likewise.
	* gcc.target/arm/pac-14.c: Likewise.
	* lib/target-supports.exp
	(check_effective_target_arm_pacbti_hw): Likewise.
	* gcc.target/arm/pac-6.c: Use effective-target
	arm_arch_v8_1m_main.
	* gcc.target/arm/pac-15.c: Use effective-target
	arm_arch_v8_1m_main_pacbti and added option "-mcpu=unset".

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Co-authored-by: Yvan ROUX <yvan.roux@foss.st.com>

gcc/testsuite/gcc.target/arm/pac-1.c

 /* Testing return address signing.  */
 /* { 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=pac-ret+leaf -mthumb -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-options "-mbranch-protection=pac-ret+leaf -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include "pac.h"
 

gcc/testsuite/gcc.target/arm/pac-10.c

 /* Testing return address signing.  */
 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_pacbti_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-options "-march=armv8.1-m.main+pacbti+fp -mbranch-protection=pac-ret -mthumb -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-options "-mbranch-protection=pac-ret -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include "pac.h"
 

gcc/testsuite/gcc.target/arm/pac-11.c

 /* Testing return address signing.  */
 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_pacbti_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-options "-march=armv8.1-m.main+pacbti+fp -mbranch-protection=bti+pac-ret+leaf -mthumb -mfloat-abi=hard --save-temps -O2" } */
+/* { dg-options "-mbranch-protection=bti+pac-ret+leaf -mfloat-abi=hard --save-temps -O2" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include "pac.h"
 

gcc/testsuite/gcc.target/arm/pac-12.c

@@ -2,6 +2,6 @@
 /* { dg-do run } */
 /* { dg-require-effective-target arm_pacbti_hw } */
 /* { dg-skip-if "need fp instructions" { *-*-* } { "" } { "-mfloat-abi=hard" } } */
-/* { dg-options "-march=armv8.1-m.main+dsp+fp.dp+pacbti -mbranch-protection=standard -mthumb -mfloat-abi=hard" } */
+/* { dg-options "-mcpu=unset -march=armv8.1-m.main+dsp+fp.dp+pacbti -mbranch-protection=standard -mthumb -mfloat-abi=hard" } */
 
 #include "pac.h"

gcc/testsuite/gcc.target/arm/pac-13.c

@@ -2,6 +2,6 @@
 /* { dg-do run } */
 /* { dg-require-effective-target arm_pacbti_hw } */
 /* { dg-skip-if "need fp instructions" { *-*-* } { "" } { "-mfloat-abi=hard" } } */
-/* { dg-options "-march=armv8.1-m.main+mve.fp+fp.dp+pacbti -mbranch-protection=standard -mthumb -mfloat-abi=hard" } */
+/* { dg-options "-mcpu=unset -march=armv8.1-m.main+mve.fp+fp.dp+pacbti -mbranch-protection=standard -mthumb -mfloat-abi=hard" } */
 
 #include "pac.h"

gcc/testsuite/gcc.target/arm/pac-14.c

@@ -2,6 +2,6 @@
 /* { dg-do run } */
 /* { dg-require-effective-target arm_pacbti_hw } */
 /* { dg-skip-if "need fp instructions" { *-*-* } { "" } { "-mfloat-abi=hard" } } */
-/* { dg-options "-march=armv8.1-m.main+mve+fp.dp+pacbti -mbranch-protection=standard -mthumb -mfloat-abi=hard" } */
+/* { dg-options "-mcpu=unset -march=armv8.1-m.main+mve+fp.dp+pacbti -mbranch-protection=standard -mthumb -mfloat-abi=hard" } */
 
 #include "pac.h"

gcc/testsuite/gcc.target/arm/pac-15.c

 /* Check that GCC does .save and .cfi_offset directives with RA_AUTH_CODE pseudo hard-register.  */
 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_pacbti_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-skip-if "avoid conflicting multilib options" { *-*-* } { "-marm" "-mcpu=*" } } */
-/* { dg-options "-march=armv8.1-m.main+mve+pacbti -mbranch-protection=pac-ret -mthumb -mfloat-abi=hard -fasynchronous-unwind-tables -g -O0" } */
+/* { dg-options "-mcpu=unset -march=armv8.1-m.main+mve+pacbti -mbranch-protection=pac-ret -mthumb -mfloat-abi=hard -fasynchronous-unwind-tables -g -O0" } */
 
 #include "stdio.h"
 

gcc/testsuite/gcc.target/arm/pac-2.c

 /* Testing return address signing.  */
 /* { 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=pac-ret -mthumb -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-options "-mbranch-protection=pac-ret -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include "pac.h"
 

gcc/testsuite/gcc.target/arm/pac-3.c

 /* Testing return address signing.  */
 /* { 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 --save-temps -O2" } */
+/* { dg-options "-mbranch-protection=bti+pac-ret+leaf -mfloat-abi=hard --save-temps -O2" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include "pac.h"
 

gcc/testsuite/gcc.target/arm/pac-4.c

 /* Testing return address signing.  */
 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_pacbti_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-options "-march=armv8.1-m.main+pacbti+fp -mthumb -mfloat-abi=hard --save-temps -O2" } */
+/* { dg-options "-mfloat-abi=hard --save-temps -O2" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include "pac.h"
 

gcc/testsuite/gcc.target/arm/pac-5.c

 /* Testing return address signing.  */
 /* { 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=pac-ret+leaf -mthumb -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-options "-mbranch-protection=pac-ret+leaf -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include <stdlib.h>
 

gcc/testsuite/gcc.target/arm/pac-6.c

 /* Check that GCC does .save and .cfi_offset directives with RA_AUTH_CODE pseudo hard-register.  */
 /* { 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 -mthumb --save-temps -O0 -g" } */
+/* { dg-options "-mbranch-protection=pac-ret+leaf --save-temps -O0 -g" } */
+/* { dg-add-options arm_arch_v8_1m_main } */
 
 int i;
 

gcc/testsuite/gcc.target/arm/pac-7.c

 /* Testing return address signing.  */
 /* { 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=pac-ret+leaf -mthumb -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-options "-mbranch-protection=pac-ret+leaf -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include <stdlib.h>
 

gcc/testsuite/gcc.target/arm/pac-8.c

 /* Testing return address signing.  */
 /* { 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=pac-ret+leaf -mthumb -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-options "-mbranch-protection=pac-ret+leaf -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include <stdarg.h>
 #include <stdlib.h>

gcc/testsuite/gcc.target/arm/pac-9.c

 /* Testing return address signing.  */
 /* { dg-do compile } */
+/* { dg-require-effective-target arm_arch_v8_1m_main_pacbti_ok } */
 /* { dg-require-effective-target mbranch_protection_ok } */
-/* { dg-options "-march=armv8.1-m.main+pacbti+fp -mbranch-protection=pac-ret+leaf -mthumb -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-options "-mbranch-protection=pac-ret+leaf -mfloat-abi=hard --save-temps -O0" } */
+/* { dg-add-options arm_arch_v8_1m_main_pacbti } */
 
 #include "pac.h"
 

gcc/testsuite/lib/target-supports.exp

@@ -6114,7 +6114,7 @@ proc check_effective_target_arm_pacbti_hw {} {
 	  asm ("autg r12, lr, sp");
 	  asm ("bx lr");
 	}
-    } "-march=armv8.1-m.main+pacbti+fp -mbranch-protection=standard -mthumb -mfloat-abi=hard"]
+    } "-mcpu=unset -march=armv8.1-m.main+pacbti+fp -mbranch-protection=standard -mthumb -mfloat-abi=hard"]
 }
 
 # Return 1 if this compilation turns on string_ops_prefer_neon on.