From dcbf698ddec148c8acddfe53538f8b7e83c324aa Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Wed, 31 Oct 2012 18:51:07 +0000
Subject: [PATCH] getArchTypeForDarwinArchName is only used in the clang
 driver, copy it there. I will remove it from llvm in the next commit.

llvm-svn: 167156
---
 clang/lib/Driver/Driver.cpp     |  6 +++---
 clang/lib/Driver/ToolChains.cpp |  4 ++--
 clang/lib/Driver/Tools.cpp      | 31 +++++++++++++++++++++++++++++++
 clang/lib/Driver/Tools.h        |  2 ++
 4 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index ac1e112..6b0300b 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -790,7 +790,7 @@ void Driver::BuildUniversalActions(const ToolChain &TC,
       // Validate the option here; we don't save the type here because its
       // particular spelling may participate in other driver choices.
       llvm::Triple::ArchType Arch =
-        llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args));
+        tools::darwin::getArchTypeForDarwinArchName(A->getValue(Args));
       if (Arch == llvm::Triple::UnknownArch) {
         Diag(clang::diag::err_drv_invalid_arch_name)
           << A->getAsString(Args);
@@ -1623,14 +1623,14 @@ static llvm::Triple computeTargetTriple(StringRef DefaultTargetTriple,
     // If an explict Darwin arch name is given, that trumps all.
     if (!DarwinArchName.empty()) {
       Target.setArch(
-        llvm::Triple::getArchTypeForDarwinArchName(DarwinArchName));
+        tools::darwin::getArchTypeForDarwinArchName(DarwinArchName));
       return Target;
     }
 
     // Handle the Darwin '-arch' flag.
     if (Arg *A = Args.getLastArg(options::OPT_arch)) {
       llvm::Triple::ArchType DarwinArch
-        = llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args));
+        = tools::darwin::getArchTypeForDarwinArchName(A->getValue(Args));
       if (DarwinArch != llvm::Triple::UnknownArch)
         Target.setArch(DarwinArch);
     }
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index e403e20..eca5b3b 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -714,10 +714,10 @@ DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args,
       // Skip this argument unless the architecture matches either the toolchain
       // triple arch, or the arch being bound.
       llvm::Triple::ArchType XarchArch =
-        llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args, 0));
+        tools::darwin::getArchTypeForDarwinArchName(A->getValue(Args, 0));
       if (!(XarchArch == getArch()  ||
             (BoundArch && XarchArch ==
-             llvm::Triple::getArchTypeForDarwinArchName(BoundArch))))
+             tools::darwin::getArchTypeForDarwinArchName(BoundArch))))
         continue;
 
       Arg *OriginalArg = A;
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 7c48d6b..95db821 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -3526,6 +3526,37 @@ void hexagon::Link::ConstructJob(Compilation &C, const JobAction &JA,
 }
 // Hexagon tools end.
 
+llvm::Triple::ArchType darwin::getArchTypeForDarwinArchName(StringRef Str) {
+  // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
+  // archs which Darwin doesn't use.
+
+  // The matching this routine does is fairly pointless, since it is neither the
+  // complete architecture list, nor a reasonable subset. The problem is that
+  // historically the driver driver accepts this and also ties its -march=
+  // handling to the architecture name, so we need to be careful before removing
+  // support for it.
+
+  // This code must be kept in sync with Clang's Darwin specific argument
+  // translation.
+
+  return llvm::StringSwitch<llvm::Triple::ArchType>(Str)
+    .Cases("ppc", "ppc601", "ppc603", "ppc604", "ppc604e", llvm::Triple::ppc)
+    .Cases("ppc750", "ppc7400", "ppc7450", "ppc970", llvm::Triple::ppc)
+    .Case("ppc64", llvm::Triple::ppc64)
+    .Cases("i386", "i486", "i486SX", "i586", "i686", llvm::Triple::x86)
+    .Cases("pentium", "pentpro", "pentIIm3", "pentIIm5", "pentium4",
+           llvm::Triple::x86)
+    .Case("x86_64", llvm::Triple::x86_64)
+    // This is derived from the driver driver.
+    .Cases("arm", "armv4t", "armv5", "armv6", llvm::Triple::arm)
+    .Cases("armv7", "armv7f", "armv7k", "armv7s", "xscale", llvm::Triple::arm)
+    .Case("r600", llvm::Triple::r600)
+    .Case("nvptx", llvm::Triple::nvptx)
+    .Case("nvptx64", llvm::Triple::nvptx64)
+    .Case("amdil", llvm::Triple::amdil)
+    .Case("spir", llvm::Triple::spir)
+    .Default(llvm::Triple::UnknownArch);
+}
 
 const char *darwin::CC1::getCC1Name(types::ID Type) const {
   switch (Type) {
diff --git a/clang/lib/Driver/Tools.h b/clang/lib/Driver/Tools.h
index 9d0778b..5898c66 100644
--- a/clang/lib/Driver/Tools.h
+++ b/clang/lib/Driver/Tools.h
@@ -202,6 +202,8 @@ namespace hexagon {
 
 
 namespace darwin {
+  llvm::Triple::ArchType getArchTypeForDarwinArchName(StringRef Str);
+
   class LLVM_LIBRARY_VISIBILITY DarwinTool : public Tool {
     virtual void anchor();
   protected:
-- 
2.7.4