ARMV8-A archkind and target defines helper functions

Sjoerd Meijer · Sjoerd Meijer · commit cb75f61c1df3 · 2017-06-30T08:07:34.000Z
This introduces helper functions that set target defines for different ARMV8-A architecture kinds. It fixes an issue that the v8.1 define ARM_FEATURE_QRDMX was not set for v8.2. These helper functions make things more “scalable” if we want to add ARMv8.3 at some point, and a cleanup has been done to hold the architecture kind in one variable (instead of one for each). Differential Revision: https://reviews.llvm.org/D34686 llvm-svn: 306805
diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
@@ -5615,6 +5615,17 @@ class ARMTargetInfo : public TargetInfo {
 
   bool setFPMath(StringRef Name) override;
 
+  void getTargetDefinesARMV81A(const LangOptions &Opts,
+                               MacroBuilder &Builder) const {
+    Builder.defineMacro("__ARM_FEATURE_QRDMX", "1");
+  }
+
+  void getTargetDefinesARMV82A(const LangOptions &Opts,
+                               MacroBuilder &Builder) const {
+    // Also include the ARMv8.1-A defines
+    getTargetDefinesARMV81A(Opts, Builder);
+  }
+
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override {
     // Target identification.
@@ -5813,8 +5824,15 @@ class ARMTargetInfo : public TargetInfo {
     if (Opts.UnsafeFPMath)
       Builder.defineMacro("__ARM_FP_FAST", "1");
 
-    if (ArchKind == llvm::ARM::AK_ARMV8_1A)
-      Builder.defineMacro("__ARM_FEATURE_QRDMX", "1");
+    switch(ArchKind) {
+    default: break;
+    case llvm::ARM::AK_ARMV8_1A:
+      getTargetDefinesARMV81A(Opts, Builder);
+      break;
+    case llvm::ARM::AK_ARMV8_2A:
+      getTargetDefinesARMV82A(Opts, Builder);
+      break;
+    }
   }
 
   ArrayRef<Builtin::Info> getTargetBuiltins() const override {
@@ -6207,9 +6225,8 @@ class AArch64TargetInfo : public TargetInfo {
   unsigned CRC;
   unsigned Crypto;
   unsigned Unaligned;
-  unsigned V8_1A;
-  unsigned V8_2A;
   unsigned HasFullFP16;
+  llvm::AArch64::ArchKind ArchKind;
 
   static const Builtin::Info BuiltinInfo[];
 
@@ -6275,6 +6292,20 @@ class AArch64TargetInfo : public TargetInfo {
            static_cast<unsigned>(llvm::AArch64::ArchKind::AK_INVALID);
   }
 
+  void getTargetDefinesARMV81A(const LangOptions &Opts,
+                        MacroBuilder &Builder) const {
+    Builder.defineMacro("__ARM_FEATURE_QRDMX", "1");
+  }
+
+  void getTargetDefinesARMV82A(const LangOptions &Opts,
+                        MacroBuilder &Builder) const {
+    // Also include the ARMv8.1 defines
+    getTargetDefinesARMV81A(Opts, Builder);
+
+    if (FPU == NeonMode && HasFullFP16)
+      Builder.defineMacro("__ARM_FEATURE_FP16_VECTOR_ARITHMETIC", "1");
+  }
+
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override {
     // Target identification.
@@ -6339,10 +6370,15 @@ class AArch64TargetInfo : public TargetInfo {
     if (Unaligned)
       Builder.defineMacro("__ARM_FEATURE_UNALIGNED", "1");
 
-    if (V8_1A)
-      Builder.defineMacro("__ARM_FEATURE_QRDMX", "1");
-    if (V8_2A && FPU == NeonMode && HasFullFP16)
-      Builder.defineMacro("__ARM_FEATURE_FP16_VECTOR_ARITHMETIC", "1");
+    switch(ArchKind) {
+    default: break;
+    case llvm::AArch64::ArchKind::AK_ARMV8_1A:
+      getTargetDefinesARMV81A(Opts, Builder);
+      break;
+    case llvm::AArch64::ArchKind::AK_ARMV8_2A:
+      getTargetDefinesARMV82A(Opts, Builder);
+      break;
+    }
 
     // All of the __sync_(bool|val)_compare_and_swap_(1|2|4|8) builtins work.
     Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");
@@ -6369,9 +6405,8 @@ class AArch64TargetInfo : public TargetInfo {
     CRC = 0;
     Crypto = 0;
     Unaligned = 1;
-    V8_1A = 0;
-    V8_2A = 0;
     HasFullFP16 = 0;
+    ArchKind = llvm::AArch64::ArchKind::AK_ARMV8A;
 
     for (const auto &Feature : Features) {
       if (Feature == "+neon")
@@ -6383,9 +6418,9 @@ class AArch64TargetInfo : public TargetInfo {
       if (Feature == "+strict-align")
         Unaligned = 0;
       if (Feature == "+v8.1a")
-        V8_1A = 1;
+        ArchKind = llvm::AArch64::ArchKind::AK_ARMV8_1A;
       if (Feature == "+v8.2a")
-        V8_2A = 1;
+        ArchKind = llvm::AArch64::ArchKind::AK_ARMV8_2A;
       if (Feature == "+fullfp16")
         HasFullFP16 = 1;
     }
diff --git a/clang/test/Preprocessor/aarch64-target-features.c b/clang/test/Preprocessor/aarch64-target-features.c
@@ -71,8 +71,9 @@
 // CHECK-NEON: __ARM_NEON 1
 // CHECK-NEON: __ARM_NEON_FP 0xE
 
-// RUN: %clang -target aarch64-none-eabi -march=armv8.1-a -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-V81A %s
-// CHECK-V81A: __ARM_FEATURE_QRDMX 1
+// RUN: %clang -target aarch64-none-eabi -march=armv8.1-a -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-QRDMX %s
+// RUN: %clang -target aarch64-none-eabi -march=armv8.2-a -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-QRDMX %s
+// CHECK-QRDMX: __ARM_FEATURE_QRDMX 1
 
 // RUN: %clang -target aarch64 -march=arm64 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-ARCH-NOT-ACCEPT %s
 // RUN: %clang -target aarch64 -march=aarch64 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-ARCH-NOT-ACCEPT %s
diff --git a/clang/test/Preprocessor/arm-target-features.c b/clang/test/Preprocessor/arm-target-features.c
@@ -441,4 +441,5 @@
 // CHECK-V82A: #define __ARM_ARCH 8
 // CHECK-V82A: #define __ARM_ARCH_8_2A__ 1
 // CHECK-V82A: #define __ARM_ARCH_PROFILE 'A'
+// CHECK-V82A: #define __ARM_FEATURE_QRDMX 1
 // CHECK-V82A: #define __ARM_FP 0xE
