[ARM] Add Cortex-M35P Support

- Add clang frontend testing for Cortex-M35P

Differential Revision: https://reviews.llvm.org/D57765



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@356742 91177308-0d34-0410-b5e6-96231b3b80d8

test/Driver/arm-cortex-cpus.c

@@ -822,8 +822,10 @@
 // RUN: %clang -target arm -mcpu=cortex-m23 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8MBASE %s
 // CHECK-CPUV8MBASE:  "-cc1"{{.*}} "-triple" "thumbv8m.base-
 
-// RUN: %clang -target arm -mcpu=cortex-m33 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8MMAIN %s
-// CHECK-CPUV8MMAIN:  "-cc1"{{.*}} "-triple" "thumbv8m.main-
+// RUN: %clang -target arm -mcpu=cortex-m33 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CORTEX-M33 %s
+// RUN: %clang -target arm -mcpu=cortex-m35p -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CORTEX-M35P %s
+// CHECK-CORTEX-M33:  "-cc1"{{.*}} "-triple" "thumbv8m.main-{{.*}} "-target-cpu" "cortex-m33"
+// CHECK-CORTEX-M35P:  "-cc1"{{.*}} "-triple" "thumbv8m.main-{{.*}} "-target-cpu" "cortex-m35p"
 
 // ================== Check whether -mcpu accepts mixed-case values.
 // RUN: %clang -target arm-linux-gnueabi -mcpu=Cortex-a5 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CASE-INSENSITIVE-CPUV7A %s