[AArch64] Add command-line options for Statistical Profiling Extension

This adds the "+profile" and +noprofile" suffixes for the -march and
-mcpu options, to allow enabling or disabling the options Statistical
Profiling Extension to ARMv8.2-A.

Differential Revision: http://reviews.llvm.org/D15023



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@254161 91177308-0d34-0410-b5e6-96231b3b80d8

Author: ostannard

lib/Driver/Tools.cpp

@@ -2032,11 +2032,13 @@ static bool DecodeAArch64Features(const Driver &D, StringRef text,
                              .Case("crc", "+crc")
                              .Case("crypto", "+crypto")
                              .Case("fp16", "+fullfp16")
+                             .Case("profile", "+spe")
                              .Case("nofp", "-fp-armv8")
                              .Case("nosimd", "-neon")
                              .Case("nocrc", "-crc")
                              .Case("nocrypto", "-crypto")
                              .Case("nofp16", "-fullfp16")
+                             .Case("noprofile", "-spe")
                              .Default(nullptr);
     if (result)
       Features.push_back(result);

test/Driver/aarch64-cpus.c

@@ -126,6 +126,12 @@
 // RUN: %clang -target aarch64 -march=armv8.2-a+fp16 -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV82A-FP16 %s
 // GENERICV82A-FP16: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v8.2a" "-target-feature" "+fullfp16"
 
+// RUN: %clang -target aarch64 -march=armv8.2-a+profile -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV82A-SPE %s
+// GENERICV82A-SPE: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v8.2a" "-target-feature" "+spe"
+//
+// RUN: %clang -target aarch64 -march=armv8.2-a+fp16+profile -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV82A-FP16-SPE %s
+// GENERICV82A-FP16-SPE: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v8.2a" "-target-feature" "+fullfp16" "-target-feature" "+spe"
+
 // ================== Check whether -march accepts mixed-case values.
 // RUN: %clang -target aarch64_be -march=ARMV8.1A -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
 // RUN: %clang -target aarch64_be -march=ARMV8.1-A -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s