ADT: remove MinGW32 and Cygwin OSType enum

Remove the MinGW32 and Cygwin types from the OSType enumeration.  These values
are represented via environments of Windows.  It is a source of confusion and
needlessly clutters the code.  The cost of doing this is that we must sink the
check for them into the normalization code path along with the spelling.

Addresses PR20592.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215303 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/ADT/Triple.h b/include/llvm/ADT/Triple.h
index cb92763..0dcdc17 100644 (file)
--- a/include/llvm/ADT/Triple.h
+++ b/include/llvm/ADT/Triple.h
@@ -111,7 +111,6 @@ public:
     UnknownOS,
 
     AuroraUX,
-    Cygwin,
     Darwin,
     DragonFly,
     FreeBSD,
@@ -120,7 +119,6 @@ public:
     Linux,
     Lv2,        // PS3
     MacOSX,
-    MinGW32,    // i*86-pc-mingw32, *-w64-mingw32
     NetBSD,
     OpenBSD,
     Solaris,
@@ -378,13 +376,11 @@ public:
   }
 
   bool isWindowsCygwinEnvironment() const {
-    return getOS() == Triple::Cygwin ||
-           (getOS() == Triple::Win32 && getEnvironment() == Triple::Cygnus);
+    return getOS() == Triple::Win32 && getEnvironment() == Triple::Cygnus;
   }
 
   bool isWindowsGNUEnvironment() const {
-    return getOS() == Triple::MinGW32 ||
-           (getOS() == Triple::Win32 && getEnvironment() == Triple::GNU);
+    return getOS() == Triple::Win32 && getEnvironment() == Triple::GNU;
   }
 
   /// \brief Tests for either Cygwin or MinGW OS

diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index 694f1cc..2c02773 100644 (file)
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -126,7 +126,6 @@ const char *Triple::getOSTypeName(OSType Kind) {
   case UnknownOS: return "unknown";
 
   case AuroraUX: return "auroraux";
-  case Cygwin: return "cygwin";
   case Darwin: return "darwin";
   case DragonFly: return "dragonfly";
   case FreeBSD: return "freebsd";
@@ -135,7 +134,6 @@ const char *Triple::getOSTypeName(OSType Kind) {
   case Linux: return "linux";
   case Lv2: return "lv2";
   case MacOSX: return "macosx";
-  case MinGW32: return "mingw32";
   case NetBSD: return "netbsd";
   case OpenBSD: return "openbsd";
   case Solaris: return "solaris";
@@ -273,7 +271,6 @@ static Triple::VendorType parseVendor(StringRef VendorName) {
 static Triple::OSType parseOS(StringRef OSName) {
   return StringSwitch<Triple::OSType>(OSName)
     .StartsWith("auroraux", Triple::AuroraUX)
-    .StartsWith("cygwin", Triple::Cygwin)
     .StartsWith("darwin", Triple::Darwin)
     .StartsWith("dragonfly", Triple::DragonFly)
     .StartsWith("freebsd", Triple::FreeBSD)
@@ -282,7 +279,6 @@ static Triple::OSType parseOS(StringRef OSName) {
     .StartsWith("linux", Triple::Linux)
     .StartsWith("lv2", Triple::Lv2)
     .StartsWith("macosx", Triple::MacOSX)
-    .StartsWith("mingw32", Triple::MinGW32)
     .StartsWith("netbsd", Triple::NetBSD)
     .StartsWith("openbsd", Triple::OpenBSD)
     .StartsWith("solaris", Triple::Solaris)
@@ -416,6 +412,9 @@ Triple::Triple(const Twine &ArchStr, const Twine &VendorStr, const Twine &OSStr,
 }
 
 std::string Triple::normalize(StringRef Str) {
+  bool IsMinGW32 = false;
+  bool IsCygwin = false;
+
   // Parse into components.
   SmallVector<StringRef, 4> Components;
   Str.split(Components, "-");
@@ -432,8 +431,11 @@ std::string Triple::normalize(StringRef Str) {
   if (Components.size() > 1)
     Vendor = parseVendor(Components[1]);
   OSType OS = UnknownOS;
-  if (Components.size() > 2)
+  if (Components.size() > 2) {
     OS = parseOS(Components[2]);
+    IsCygwin = Components[2].startswith("cygwin");
+    IsMinGW32 = Components[2].startswith("mingw");
+  }
   EnvironmentType Environment = UnknownEnvironment;
   if (Components.size() > 3)
     Environment = parseEnvironment(Components[3]);
@@ -476,7 +478,9 @@ std::string Triple::normalize(StringRef Str) {
         break;
       case 2:
         OS = parseOS(Comp);
-        Valid = OS != UnknownOS;
+        IsCygwin = Comp.startswith("cygwin");
+        IsMinGW32 = Comp.startswith("mingw");
+        Valid = OS != UnknownOS || IsCygwin || IsMinGW32;
         break;
       case 3:
         Environment = parseEnvironment(Comp);
@@ -556,16 +560,16 @@ std::string Triple::normalize(StringRef Str) {
       else
         Components[3] = getObjectFormatTypeName(ObjectFormat);
     }
-  } else if (OS == Triple::MinGW32) {
+  } else if (IsMinGW32) {
     Components.resize(4);
     Components[2] = "windows";
     Components[3] = "gnu";
-  } else if (OS == Triple::Cygwin) {
+  } else if (IsCygwin) {
     Components.resize(4);
     Components[2] = "windows";
     Components[3] = "cygnus";
   }
-  if (OS == Triple::MinGW32 || OS == Triple::Cygwin ||
+  if (IsMinGW32 || IsCygwin ||
       (OS == Triple::Win32 && Environment != UnknownEnvironment)) {
     if (ObjectFormat != UnknownObjectFormat && ObjectFormat != Triple::COFF) {
       Components.resize(5);

diff --git a/unittests/ADT/TripleTest.cpp b/unittests/ADT/TripleTest.cpp
index dfc9983..2a49afc 100644 (file)
--- a/unittests/ADT/TripleTest.cpp
+++ b/unittests/ADT/TripleTest.cpp
@@ -190,7 +190,7 @@ TEST(TripleTest, Normalization) {
          ++Vendor) {
       C[1] = Triple::getVendorTypeName(Triple::VendorType(Vendor));
       for (int OS = 1+Triple::UnknownOS; OS <= Triple::Minix; ++OS) {
-        if (OS == Triple::Cygwin || OS == Triple::MinGW32 || OS == Triple::Win32)
+        if (OS == Triple::Win32)
           continue;
 
         C[2] = Triple::getOSTypeName(Triple::OSType(OS));

diff --git a/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp b/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
index d03de89..c80b88b 100644 (file)
--- a/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
+++ b/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
@@ -139,8 +139,6 @@ protected:
 
     // The operating systems below are known to be sufficiently incompatible
     // that they will fail the MCJIT C API tests.
-    UnsupportedOSs.push_back(Triple::Cygwin);
-
     UnsupportedEnvironments.push_back(Triple::Cygnus);
   }
   

diff --git a/unittests/ExecutionEngine/MCJIT/MCJITTestBase.h b/unittests/ExecutionEngine/MCJIT/MCJITTestBase.h
index 25de312..cc82b27 100644 (file)
--- a/unittests/ExecutionEngine/MCJIT/MCJITTestBase.h
+++ b/unittests/ExecutionEngine/MCJIT/MCJITTestBase.h
@@ -302,7 +302,6 @@ protected:
     // The operating systems below are known to be incompatible with MCJIT as
     // they are copied from the test/ExecutionEngine/MCJIT/lit.local.cfg and
     // should be kept in sync.
-    UnsupportedOSs.push_back(Triple::Cygwin);
     UnsupportedOSs.push_back(Triple::Darwin);
 
     UnsupportedEnvironments.push_back(Triple::Cygnus);