Delete CloudABI support

After this D108637 and with FreeBSD -current and now 14 dropping support for
CloudABI I think it is time to consider deleting the CloudABI support.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D158920

Author: brad0

clang/docs/tools/clang-formatted-files.txt

@@ -399,7 +399,6 @@ clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp
 clang/lib/Driver/ToolChains/AMDGPUOpenMP.h
 clang/lib/Driver/ToolChains/AVR.cpp
 clang/lib/Driver/ToolChains/AVR.h
-clang/lib/Driver/ToolChains/CloudABI.cpp
 clang/lib/Driver/ToolChains/CommonArgs.h
 clang/lib/Driver/ToolChains/CrossWindows.h
 clang/lib/Driver/ToolChains/DragonFly.h

clang/lib/Basic/Targets.cpp

@@ -142,9 +142,6 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
       return std::make_unique<DarwinAArch64TargetInfo>(Triple, Opts);
 
     switch (os) {
-    case llvm::Triple::CloudABI:
-      return std::make_unique<CloudABITargetInfo<AArch64leTargetInfo>>(Triple,
-                                                                       Opts);
     case llvm::Triple::FreeBSD:
       return std::make_unique<FreeBSDTargetInfo<AArch64leTargetInfo>>(Triple,
                                                                       Opts);
@@ -202,9 +199,6 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
       return std::make_unique<DarwinARMTargetInfo>(Triple, Opts);
 
     switch (os) {
-    case llvm::Triple::CloudABI:
-      return std::make_unique<CloudABITargetInfo<ARMleTargetInfo>>(Triple,
-                                                                   Opts);
     case llvm::Triple::Linux:
       switch (Triple.getEnvironment()) {
       default:
@@ -541,9 +535,6 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
       return std::make_unique<DarwinI386TargetInfo>(Triple, Opts);
 
     switch (os) {
-    case llvm::Triple::CloudABI:
-      return std::make_unique<CloudABITargetInfo<X86_32TargetInfo>>(Triple,
-                                                                    Opts);
     case llvm::Triple::Linux: {
       switch (Triple.getEnvironment()) {
       default:
@@ -603,9 +594,6 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
       return std::make_unique<DarwinX86_64TargetInfo>(Triple, Opts);
 
     switch (os) {
-    case llvm::Triple::CloudABI:
-      return std::make_unique<CloudABITargetInfo<X86_64TargetInfo>>(Triple,
-                                                                    Opts);
     case llvm::Triple::Linux: {
       switch (Triple.getEnvironment()) {
       default:

clang/lib/Basic/Targets/OSTargets.h

@@ -34,22 +34,6 @@ class LLVM_LIBRARY_VISIBILITY OSTargetInfo : public TgtInfo {
   }
 };
 
-// CloudABI Target
-template <typename Target>
-class LLVM_LIBRARY_VISIBILITY CloudABITargetInfo : public OSTargetInfo<Target> {
-protected:
-  void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
-                    MacroBuilder &Builder) const override {
-    Builder.defineMacro("__CloudABI__");
-
-    // CloudABI uses ISO/IEC 10646:2012 for wchar_t, char16_t and char32_t.
-    Builder.defineMacro("__STDC_ISO_10646__", "201206L");
-  }
-
-public:
-  using OSTargetInfo<Target>::OSTargetInfo;
-};
-
 void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
                       const llvm::Triple &Triple, StringRef &PlatformName,
                       VersionTuple &PlatformMinVersion);

clang/lib/Driver/CMakeLists.txt

@@ -47,7 +47,6 @@ add_clang_library(clangDriver
   ToolChains/AVR.cpp
   ToolChains/BareMetal.cpp
   ToolChains/Clang.cpp
-  ToolChains/CloudABI.cpp
   ToolChains/CommonArgs.cpp
   ToolChains/CrossWindows.cpp
   ToolChains/CSKYToolChain.cpp

clang/lib/Driver/Driver.cpp

@@ -15,7 +15,6 @@
 #include "ToolChains/BareMetal.h"
 #include "ToolChains/CSKYToolChain.h"
 #include "ToolChains/Clang.h"
-#include "ToolChains/CloudABI.h"
 #include "ToolChains/CrossWindows.h"
 #include "ToolChains/Cuda.h"
 #include "ToolChains/Darwin.h"
@@ -6150,9 +6149,6 @@ const ToolChain &Driver::getToolChain(const ArgList &Args,
     case llvm::Triple::Haiku:
       TC = std::make_unique<toolchains::Haiku>(*this, Target, Args);
       break;
-    case llvm::Triple::CloudABI:
-      TC = std::make_unique<toolchains::CloudABI>(*this, Target, Args);
-      break;
     case llvm::Triple::Darwin:
     case llvm::Triple::MacOSX:
     case llvm::Triple::IOS:

clang/lib/Driver/ToolChains/Clang.cpp

@@ -466,8 +466,7 @@ static bool useFramePointerForTargetByDefault(const ArgList &Args,
     return !areOptimizationsEnabled(Args);
   }
 
-  if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
-      Triple.isOSHurd()) {
+  if (Triple.isOSLinux() || Triple.isOSHurd()) {
     switch (Triple.getArch()) {
     // Don't use a frame pointer on linux if optimizing for certain targets.
     case llvm::Triple::arm:

clang/lib/Driver/ToolChains/CloudABI.cpp

@@ -584,9 +584,9 @@ llvm::StringRef tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
   return LtoJobsArg->getValue();
 }
 
-// CloudABI and PS4/PS5 use -ffunction-sections and -fdata-sections by default.
+// PS4/PS5 uses -ffunction-sections and -fdata-sections by default.
 bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
-  return Triple.getOS() == llvm::Triple::CloudABI || Triple.isPS();
+  return Triple.isPS();
 }
 
 void tools::addLTOOptions(const ToolChain &ToolChain, const ArgList &Args,

clang/lib/Driver/ToolChains/CloudABI.h

@@ -231,7 +231,6 @@ void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
 
   if (HSOpts.UseStandardSystemIncludes) {
     switch (os) {
-    case llvm::Triple::CloudABI:
     case llvm::Triple::ELFIAMCU:
       break;
     case llvm::Triple::Win32:
@@ -271,13 +270,6 @@ void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
   }
 
   switch (os) {
-  case llvm::Triple::CloudABI: {
-    // <sysroot>/<triple>/include
-    SmallString<128> P = StringRef(HSOpts.ResourceDir);
-    llvm::sys::path::append(P, "../../..", triple.str(), "include");
-    AddPath(P, System, false);
-    break;
-  }
   case llvm::Triple::RTEMS:
     break;
   case llvm::Triple::Win32:
@@ -295,7 +287,6 @@ void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
   }
 
   switch (os) {
-  case llvm::Triple::CloudABI:
   case llvm::Triple::RTEMS:
   case llvm::Triple::ELFIAMCU:
     break;

clang/lib/Driver/ToolChains/CommonArgs.cpp

@@ -27,7 +27,6 @@ using namespace ento;
 static bool isArc4RandomAvailable(const ASTContext &Ctx) {
   const llvm::Triple &T = Ctx.getTargetInfo().getTriple();
   return T.getVendor() == llvm::Triple::Apple ||
-         T.getOS() == llvm::Triple::CloudABI ||
          T.isOSFreeBSD() ||
          T.isOSNetBSD() ||
          T.isOSOpenBSD() ||