AArch64: support arm64_32, an ILP32 slice for watchOS.

This is the main CodeGen patch to support the arm64_32 watchOS ABI in LLVM.
FastISel is mostly disabled for now since it would generate incorrect code for
ILP32.

llvm-svn: 371722

4 files changed, 8 insertions, 2 deletions

diff --git a/llvm/lib/ExecutionEngine/Orc/IndirectionUtils.cpp b/llvm/lib/ExecutionEngine/Orc/IndirectionUtils.cpp
index d59a7a6e29f..0295db7633d 100644
--- a/llvm/lib/ExecutionEngine/Orc/IndirectionUtils.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/IndirectionUtils.cpp
@@ -120,7 +120,8 @@ createLocalCompileCallbackManager(const Triple &T, ExecutionSession &ES,
     return make_error<StringError>(
         std::string("No callback manager available for ") + T.str(),
         inconvertibleErrorCode());
-  case Triple::aarch64: {
+  case Triple::aarch64:
+  case Triple::aarch64_32: {
     typedef orc::LocalJITCompileCallbackManager<orc::OrcAArch64> CCMgrT;
     return CCMgrT::Create(ES, ErrorHandlerAddress);
     }
@@ -168,6 +169,7 @@ createLocalIndirectStubsManagerBuilder(const Triple &T) {
       };
 
     case Triple::aarch64:
+    case Triple::aarch64_32:
       return [](){
         return std::make_unique<
                        orc::LocalIndirectStubsManager<orc::OrcAArch64>>();
diff --git a/llvm/lib/ExecutionEngine/Orc/LazyReexports.cpp b/llvm/lib/ExecutionEngine/Orc/LazyReexports.cpp
index 863698eb725..93aabd817d6 100644
--- a/llvm/lib/ExecutionEngine/Orc/LazyReexports.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/LazyReexports.cpp
@@ -90,6 +90,7 @@ createLocalLazyCallThroughManager(const Triple &T, ExecutionSession &ES,
         inconvertibleErrorCode());
 
   case Triple::aarch64:
+  case Triple::aarch64_32:
     return LocalLazyCallThroughManager::Create<OrcAArch64>(ES,
                                                            ErrorHandlerAddr);
 
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
index 4b328624ccd..20dccd84803 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -919,7 +919,8 @@ void RuntimeDyldImpl::addRelocationForSymbol(const RelocationEntry &RE,
 
 uint8_t *RuntimeDyldImpl::createStubFunction(uint8_t *Addr,
                                              unsigned AbiVariant) {
-  if (Arch == Triple::aarch64 || Arch == Triple::aarch64_be) {
+  if (Arch == Triple::aarch64 || Arch == Triple::aarch64_be ||
+      Arch == Triple::aarch64_32) {
     // This stub has to be able to access the full address space,
     // since symbol lookup won't necessarily find a handy, in-range,
     // PLT stub for functions which could be anywhere.
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
index a6a818601c6..9ca76602ea1 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
@@ -357,6 +357,8 @@ RuntimeDyldMachO::create(Triple::ArchType Arch,
     return std::make_unique<RuntimeDyldMachOARM>(MemMgr, Resolver);
   case Triple::aarch64:
     return std::make_unique<RuntimeDyldMachOAArch64>(MemMgr, Resolver);
+  case Triple::aarch64_32:
+    return std::make_unique<RuntimeDyldMachOAArch64>(MemMgr, Resolver);
   case Triple::x86:
     return std::make_unique<RuntimeDyldMachOI386>(MemMgr, Resolver);
   case Triple::x86_64: