Begin fixing Clang's predefined macros for various architectures. This

is *very* much a WIP that I'll be refining over the next several
commits, but I need to get this checkpoint in place for sanity.

This also adds a much more comprehensive test for architecture macros,
which is roughly generated by inspecting the behavior of a trunk build
of GCC. It still requires some massaging, but eventually I'll even check
in the script that generates these so that others can use it to append
more tests for more architectures, etc.

Next up is a bunch of simplification of the Targets.cpp code, followed
by a lot more test cases once we can reject invalid architectures.

llvm-svn: 140673

1 files changed, 101 insertions, 6 deletions

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index 5ee44080ac1..245d8fd9d7c 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -1165,6 +1165,9 @@ class X86TargetInfo : public TargetInfo {
   bool HasAES;
   bool HasAVX;
 
+  // FIXME: Make this an enum and parse into the enum when set.
+  std::string CPU;
+
 public:
   X86TargetInfo(const std::string& triple)
     : TargetInfo(triple), SSELevel(NoSSE), MMX3DNowLevel(NoMMX3DNow),
@@ -1208,6 +1211,11 @@ public:
   virtual const char* getABI() const {
     return MMX3DNowLevel == NoMMX3DNow ? "no-mmx" : "";
   }
+  virtual bool setCPU(const std::string &Name) {
+    // FIXME: Reject invalid CPU names.
+    CPU = Name;
+    return true;
+  }
 };
 
 void X86TargetInfo::getDefaultFeatures(const std::string &CPU,
@@ -1405,8 +1413,8 @@ void X86TargetInfo::HandleTargetFeatures(std::vector<std::string> &Features) {
     Features.erase(it);
 }
 
-/// X86TargetInfo::getTargetDefines - Return a set of the X86-specific #defines
-/// that are not tied to a specific subtarget.
+/// X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro
+/// definitions for this particular subtarget.
 void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
                                      MacroBuilder &Builder) const {
   // Target identification.
@@ -1429,12 +1437,99 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
 
   // Target properties.
   Builder.defineMacro("__LITTLE_ENDIAN__");
+  Builder.defineMacro("__REGISTER_PREFIX__", "");
 
   // Subtarget options.
-  Builder.defineMacro("__nocona");
-  Builder.defineMacro("__nocona__");
-  Builder.defineMacro("__tune_nocona__");
-  Builder.defineMacro("__REGISTER_PREFIX__", "");
+  // FIXME: We should build an enum for the CPUs to switch on as we do it in
+  // multiple places.
+  // FIXME: We are hard-coding the tune parameters based on the CPU, but they
+  // truly should be based on -mtune options.
+  if (CPU == "i386") {
+    // The rest are coming from the i386 define above.
+    Builder.defineMacro("__tune_i386__");
+  } else if (CPU == "i486" || CPU == "winchip-c6" || CPU == "winchip2" ||
+      CPU == "c3") {
+    Builder.defineMacro("__i486");
+    Builder.defineMacro("__i486__");
+    Builder.defineMacro("__tune_i486__");
+  } else if (CPU == "i586" || CPU == "pentium" || CPU == "pentium-mmx") {
+    Builder.defineMacro("__i586");
+    Builder.defineMacro("__i586__");
+    Builder.defineMacro("__tune_i586__");
+    Builder.defineMacro("__pentium");
+    Builder.defineMacro("__pentium__");
+    Builder.defineMacro("__tune_pentium__");
+    if (CPU == "pentium-mmx") {
+      Builder.defineMacro("__pentium_mmx__");
+      Builder.defineMacro("__tune_pentium_mmx__");
+    }
+  } else if (CPU == "i686" || CPU == "pentiumpro" || CPU == "pentium2" ||
+             CPU == "pentium3" || CPU == "pentium3m" || CPU == "pentium-m" ||
+             CPU == "c3-2") {
+    Builder.defineMacro("__i686");
+    Builder.defineMacro("__i686__");
+    // Strangely, __tune_i686__ isn't defined by GCC when CPU == i686.
+    Builder.defineMacro("__pentiumpro");
+    Builder.defineMacro("__pentiumpro__");
+    if (CPU != "i686") {
+      Builder.defineMacro("__tune_i686__");
+      Builder.defineMacro("__tune_pentiumpro__");
+      if (CPU == "pentium2" || CPU == "c3-2") {
+        Builder.defineMacro("__tune_pentium2__");
+      } else if (CPU == "pentium3") {
+        Builder.defineMacro("__tune_pentium2__");
+        Builder.defineMacro("__tune_pentium3__");
+      }
+    }
+  } else if (CPU == "pentium4" || CPU == "pentium4m") {
+    Builder.defineMacro("__pentium4");
+    Builder.defineMacro("__pentium4__");
+    Builder.defineMacro("__tune_pentium4__");
+  } else if (CPU == "yonah" || CPU == "prescott" || CPU == "nocona") {
+    Builder.defineMacro("__nocona");
+    Builder.defineMacro("__nocona__");
+    Builder.defineMacro("__tune_nocona__");
+  } else if (CPU == "core2" || CPU == "penryn") {
+    Builder.defineMacro("__core2");
+    Builder.defineMacro("__core2__");
+    Builder.defineMacro("__tune_core2__");
+  } else if (CPU == "atom") {
+    Builder.defineMacro("__atom");
+    Builder.defineMacro("__atom__");
+    Builder.defineMacro("__tune_atom__");
+  } else if (CPU == "corei7" || CPU == "corei7-avx" || CPU == "core-avx-i") {
+    Builder.defineMacro("__corei7");
+    Builder.defineMacro("__corei7__");
+    Builder.defineMacro("__tune_corei7__");
+  } else if (CPU == "k6" || CPU == "k6-2" || CPU == "k6-3") {
+    Builder.defineMacro("__k6");
+    Builder.defineMacro("__k6__");
+    Builder.defineMacro("__tune_k6__");
+    if (CPU == "k6-2") {
+      Builder.defineMacro("__k6_2__");
+      Builder.defineMacro("__tune_k6_2__");
+    } else if (CPU == "k6-3" || MMX3DNowLevel == AMD3DNow) {
+      Builder.defineMacro("__k6_3__");
+      Builder.defineMacro("__tune_k6_3__");
+    }
+  } else if (CPU == "athlon" || CPU == "athlon-tbird" || CPU == "athlon-4" ||
+             CPU == "athlon-xp" || CPU == "athlon-mp") {
+    Builder.defineMacro("__athlon");
+    Builder.defineMacro("__athlon__");
+    Builder.defineMacro("__tune_athlon__");
+    if (SSELevel != NoSSE)
+      Builder.defineMacro("__athlon_sse__");
+  } else if (CPU == "k8" || CPU == "k8-sse3" || CPU == "x86-64" ||
+             CPU == "opteron" || CPU == "opteron-sse3" || CPU == "athlon64" ||
+             CPU == "athlon64-sse3" || CPU == "athlon-fx") {
+    Builder.defineMacro("__k8");
+    Builder.defineMacro("__k8__");
+    Builder.defineMacro("__tune_k8__");
+  } else if (CPU == "geode") {
+    Builder.defineMacro("__geode");
+    Builder.defineMacro("__geode__");
+    Builder.defineMacro("__tune_geode__");
+  }
 
   // Define __NO_MATH_INLINES on linux/x86 so that we don't get inline
   // functions in glibc header files that use FP Stack inline asm which the