[ARM] Add Cortex-R52 target to CLANG

[javed.absar]

Summary

The following patch adds Cortex-R52, the new ARM real-time processor, to CLANG. Cortex-R52 implements the ARMv8-R architecture. I am submitting another corresponding patch for LLVM related changes.

[jmolloy]

LGTM, thanks Javed!

[javed.absar]

This patch changes the default cpu for armv8-r from 'generic' to cortex-r52. This is also to reflect the equivalent changes made in llvm, based on review comments.

[jmolloy]

Still LGTM.

[Eugene.Zelenko]

Committed in rL283543.

lib/Basic/Targets.cpp

     case llvm::ARM::AK_ARMV8_1A:
       return "8_1A";
     case llvm::ARM::AK_ARMV8_2A:
       return "8_2A";
     case llvm::ARM::AK_ARMV8MBaseline:
       return "8M_BASE";
     case llvm::ARM::AK_ARMV8MMainline:
       return "8M_MAIN";
+    case llvm::ARM::AK_ARMV8R:
+      return "8R";
     }
   }
 
   StringRef getCPUProfile() const {
     switch(ArchProfile) {
     case llvm::ARM::PK_A:
       return "A";
     case llvm::ARM::PK_R:

test/Driver/arm-cortex-cpus.c

 // RUN: %clang -target arm -march=armv8-a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A %s
 // RUN: %clang -target armv8 -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A %s
 // RUN: %clang -target arm -march=armv8 -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A %s
 // RUN: %clang -target armv8a -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A %s
 // RUN: %clang -target arm -march=armv8a -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A %s
 // RUN: %clang -target arm -mlittle-endian -march=armv8-a -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A %s
 // CHECK-V8A: "-cc1"{{.*}} "-triple" "armv8-{{.*}}" "-target-cpu" "cortex-a53"
 
+// RUN: %clang -target armv8r-linux-gnueabi -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8R %s
+// RUN: %clang -target arm -march=armv8r -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8R %s
+// RUN: %clang -target arm -march=armv8-r -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8R %s
+// CHECK-V8R: "-cc1"{{.*}} "-triple" "armv8r-{{.*}} "-target-cpu" "cortex-r52"
+
+// RUN: %clang -target armv8r-linux-gnueabi -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8R-BIG %s
+// RUN: %clang -target arm -march=armv8r -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8R-BIG %s
+// RUN: %clang -target arm -march=armv8-r -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8R-BIG %s
+// CHECK-V8R-BIG: "-cc1"{{.*}} "-triple" "armebv8r-{{.*}} "-target-cpu" "cortex-r52"
+
+// RUN: %clang -target armv8r-linux-gnueabi -mthumb -### -c %s 2>&1 | \
+// RUN:     FileCheck -check-prefix=CHECK-V8R-THUMB %s
+// RUN: %clang -target arm -march=armv8r -mthumb -### -c %s 2>&1 | \
+// RUN:     FileCheck -check-prefix=CHECK-V8R-THUMB %s
+// CHECK-V8R-THUMB: "-cc1"{{.*}} "-triple" "thumbv8r-{{.*}} "-target-cpu" "cortex-r52"
+// RUN: %clang -target armv8r-linux-gnueabi -mthumb -mbig-endian -### -c %s 2>&1 | \
+// RUN:     FileCheck -check-prefix=CHECK-V8R-THUMB-BIG %s
+// RUN: %clang -target arm -march=armv8r -mthumb -mbig-endian -### -c %s 2>&1 | \
+// RUN:     FileCheck -check-prefix=CHECK-V8R-THUMB-BIG %s
+// CHECK-V8R-THUMB-BIG: "-cc1"{{.*}} "-triple" "thumbebv8r-{{.*}} "-target-cpu
+
 // RUN: %clang -mcpu=generic -target armv8 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s
 // RUN: %clang -mcpu=generic -target arm -march=armv8 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s
 // RUN: %clang -mcpu=generic -target armv8a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s
 // RUN: %clang -mcpu=generic -target arm -march=armv8a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s
 // RUN: %clang -mcpu=generic -target arm -march=armv8-a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s
 // RUN: %clang -mcpu=generic -target armv8 -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s
 // RUN: %clang -mcpu=generic -target arm -march=armv8 -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s
 // RUN: %clang -mcpu=generic -target armv8a -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V8A-GENERIC %s

 // RUN: %clang -target arm -mcpu=cortex-a53 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV8A %s
 // RUN: %clang -target arm -mcpu=cortex-a57 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV8A %s
 // RUN: %clang -target arm -mcpu=cortex-a72 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV8A %s
 // RUN: %clang -target arm -mcpu=cortex-a73 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV8A %s
 // RUN: %clang -target arm -mcpu=exynos-m1 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV8A %s
 // RUN: %clang -target arm -mcpu=exynos-m2 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV8A %s
 // CHECK-BE-CPUV8A: "-cc1"{{.*}} "-triple" "armebv8-{{.*}}
 
+// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r52 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8R %s
+// CHECK-CPUV8R: "-cc1"{{.*}} "-triple" "armv8r-{{.*}}
+
 // RUN: %clang -target arm -mcpu=cortex-a32 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
 // RUN: %clang -target arm -mcpu=cortex-a35 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
 // RUN: %clang -target arm -mcpu=cortex-a53 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
 // RUN: %clang -target arm -mcpu=cortex-a57 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
 // RUN: %clang -target arm -mcpu=cortex-a72 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
 // RUN: %clang -target arm -mcpu=cortex-a73 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
 // RUN: %clang -target arm -mcpu=exynos-m1 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
 // RUN: %clang -target arm -mcpu=exynos-m2 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s

test/Preprocessor/arm-target-features.c

 // RUN: %clang -target armv8a-none-linux-gnu -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V8A %s
 // CHECK-V8A: #define __ARMEL__ 1
 // CHECK-V8A: #define __ARM_ARCH 8
 // CHECK-V8A: #define __ARM_ARCH_8A__ 1
 // CHECK-V8A: #define __ARM_FEATURE_CRC32 1
 // CHECK-V8A: #define __ARM_FEATURE_DIRECTED_ROUNDING 1
 // CHECK-V8A: #define __ARM_FEATURE_NUMERIC_MAXMIN 1
 // CHECK-V8A: #define __ARM_FP 0xE
 // CHECK-V8A: #define __ARM_FP16_ARGS 1
 // CHECK-V8A: #define __ARM_FP16_FORMAT_IEEE 1
 
+// RUN: %clang -target armv8r-none-linux-gnu -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V8R %s
+// CHECK-V8R: #define __ARMEL__ 1
+// CHECK-V8R: #define __ARM_ARCH 8
+// CHECK-V8R: #define __ARM_ARCH_8R__ 1
+// CHECK-V8R: #define __ARM_FEATURE_CRC32 1
+// CHECK-V8R: #define __ARM_FEATURE_DIRECTED_ROUNDING 1
+// CHECK-V8R: #define __ARM_FEATURE_NUMERIC_MAXMIN 1
+// CHECK-V8R: #define __ARM_FP 0xE
+
 // RUN: %clang -target armv7a-none-linux-gnu -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V7 %s
 // CHECK-V7: #define __ARMEL__ 1
 // CHECK-V7: #define __ARM_ARCH 7
 // CHECK-V7: #define __ARM_ARCH_7A__ 1
 // CHECK-V7-NOT: __ARM_FEATURE_CRC32
 // CHECK-V7-NOT: __ARM_FEATURE_NUMERIC_MAXMIN
 // CHECK-V7-NOT: __ARM_FEATURE_DIRECTED_ROUNDING
 // CHECK-V7: #define __ARM_FP 0xC