[Mips] Add two new aliases for MIPS ABI names 32 (means o32 abi) and 64

(means n64 abi) to improve compatibility with GNU tools.
Patch by Jia Liu <proljc@gmail.com>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176187 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 31 insertions, 25 deletions

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index ec57ca3609..24a69ee22b 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -4411,6 +4411,12 @@ public:
         Name == "mips16" || Name == "dsp" || Name == "dspr2") {
       Features[Name] = Enabled;
       return true;
+    } else if (Name == "32") {
+      Features["o32"] = Enabled;
+      return true;
+    } else if (Name == "64") {
+      Features["n64"] = Enabled;
+      return true;
     }
     return false;
   }
@@ -4467,6 +4473,9 @@ public:
     if ((Name == "o32") || (Name == "eabi")) {
       ABI = Name;
       return true;
+    } else if (Name == "32") {
+      ABI = "o32";
+      return true;
     } else
       return false;
   }
@@ -4571,18 +4580,19 @@ public:
   }
   virtual bool setABI(const std::string &Name) {
     SetDescriptionString(Name);
-
-    if (Name != "n32" && Name != "n64")
-      return false;
-
-    ABI = Name;
-
     if (Name == "n32") {
       LongWidth = LongAlign = 32;
       PointerWidth = PointerAlign = 32;
-    }
-
-    return true;
+      ABI = Name;
+      return true;
+    } else if (Name == "n64") {
+      ABI = Name;
+      return true;
+    } else if (Name == "64") {
+      ABI = "n64";
+      return true;
+    } else
+      return false;
   }
   virtual void getTargetDefines(const LangOptions &Opts,
                                 MacroBuilder &Builder) const {
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index c24878d70f..eac4bc600f 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -870,8 +870,8 @@ static void getMipsCPUAndABI(const ArgList &Args,
   if (!ABIName.empty()) {
     // Deduce CPU name from ABI name.
     CPUName = llvm::StringSwitch<const char *>(ABIName)
-      .Cases("o32", "eabi", DefMips32CPU)
-      .Cases("n32", "n64", DefMips64CPU)
+      .Cases("32", "o32", "eabi", DefMips32CPU)
+      .Cases("n32", "n64", "64", DefMips64CPU)
       .Default("");
   }
   else if (!CPUName.empty()) {
@@ -885,6 +885,14 @@ static void getMipsCPUAndABI(const ArgList &Args,
   // FIXME: Warn on inconsistent cpu and abi usage.
 }
 
+// Convert ABI name to the GNU tools acceptable variant.
+static StringRef getGnuCompatibleMipsABIName(StringRef ABI) {
+  return llvm::StringSwitch<llvm::StringRef>(ABI)
+    .Case("o32", "32")
+    .Case("n64", "64")
+    .Default(ABI);
+}
+
 // Select the MIPS float ABI as determined by -msoft-float, -mhard-float,
 // and -mfloat-abi=.
 static StringRef getMipsFloatABI(const Driver &D, const ArgList &Args) {
@@ -5160,14 +5168,8 @@ void freebsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("-march");
     CmdArgs.push_back(CPUName.data());
 
-    // Convert ABI name to the GNU tools acceptable variant.
-    if (ABIName == "o32")
-      ABIName = "32";
-    else if (ABIName == "n64")
-      ABIName = "64";
-
     CmdArgs.push_back("-mabi");
-    CmdArgs.push_back(ABIName.data());
+    CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data());
 
     if (getToolChain().getArch() == llvm::Triple::mips ||
         getToolChain().getArch() == llvm::Triple::mips64)
@@ -5585,14 +5587,8 @@ void linuxtools::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("-march");
     CmdArgs.push_back(CPUName.data());
 
-    // Convert ABI name to the GNU tools acceptable variant.
-    if (ABIName == "o32")
-      ABIName = "32";
-    else if (ABIName == "n64")
-      ABIName = "64";
-
     CmdArgs.push_back("-mabi");
-    CmdArgs.push_back(ABIName.data());
+    CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data());
 
     if (getToolChain().getArch() == llvm::Triple::mips ||
         getToolChain().getArch() == llvm::Triple::mips64)