ARM: define a macro for the FPv5 FPU in ARM mode.

FPv5 is in Cortex-M7 and the 64-bit CPUs when running in 32-bit mode. The name
is from the Cortex-M7 TRM.

llvm-svn: 290268

clang/lib/Basic/Targets.cpp

@@ -5391,6 +5391,8 @@ public:
         Builder.defineMacro("__ARM_VFPV3__");
       if (FPU & VFP4FPU)
         Builder.defineMacro("__ARM_VFPV4__");
+      if (FPU & FPARMV8)
+        Builder.defineMacro("__ARM_FPV5__");
     }
 
     // This only gets set when Neon instructions are actually available, unlike

clang/test/Preprocessor/arm-target-features.c

@@ -389,6 +389,7 @@
 // M7-THUMB:#define __ARM_ARCH_EXT_IDIV__ 1
 // M7-THUMB:#define __ARM_FEATURE_DSP 1
 // M7-THUMB:#define __ARM_FP 0xE
+// M7-THUMB:#define __ARM_FPV5__ 1
 
 // Test whether predefines are as expected when targeting krait.
 // RUN: %clang -target armv7 -mcpu=krait -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=KRAIT %s