1 files changed, 136 insertions, 0 deletions
diff --git a/clang/lib/Basic/Targets/LoongArch.h b/clang/lib/Basic/Targets/LoongArch.h
new file mode 100644
index 000000000000..646c8d071f1d
--- /dev/null
+++ b/clang/lib/Basic/Targets/LoongArch.h
@@ -0,0 +1,136 @@
+//===-- LoongArch.h - Declare LoongArch target feature support --*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares LoongArch TargetInfo objects.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_LOONGARCH_H
+#define LLVM_CLANG_LIB_BASIC_TARGETS_LOONGARCH_H
+
+#include "clang/Basic/TargetInfo.h"
+#include "clang/Basic/TargetOptions.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/Compiler.h"
+
+namespace clang {
+namespace targets {
+
+class LLVM_LIBRARY_VISIBILITY LoongArchTargetInfo : public TargetInfo {
+protected:
+  std::string ABI;
+  bool HasFeatureD;
+  bool HasFeatureF;
+
+public:
+  LoongArchTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
+      : TargetInfo(Triple) {
+    HasFeatureD = false;
+    HasFeatureF = false;
+    LongDoubleWidth = 128;
+    LongDoubleAlign = 128;
+    LongDoubleFormat = &llvm::APFloat::IEEEquad();
+    SuitableAlign = 128;
+    WCharType = SignedInt;
+    WIntType = UnsignedInt;
+  }
+
+  StringRef getABI() const override { return ABI; }
+
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override;
+
+  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
+
+  BuiltinVaListKind getBuiltinVaListKind() const override {
+    return TargetInfo::VoidPtrBuiltinVaList;
+  }
+
+  const char *getClobbers() const override { return ""; }
+
+  ArrayRef<const char *> getGCCRegNames() const override;
+
+  int getEHDataRegisterNumber(unsigned RegNo) const override {
+    if (RegNo == 0)
+      return 4;
+    if (RegNo == 1)
+      return 5;
+    return -1;
+  }
+
+  ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
+
+  bool validateAsmConstraint(const char *&Name,
+                             TargetInfo::ConstraintInfo &Info) const override;
+  std::string convertConstraint(const char *&Constraint) const override;
+
+  bool hasBitIntType() const override { return true; }
+
+  bool handleTargetFeatures(std::vector<std::string> &Features,
+                            DiagnosticsEngine &Diags) override;
+
+  bool
+  initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
+                 StringRef CPU,
+                 const std::vector<std::string> &FeaturesVec) const override;
+
+  bool hasFeature(StringRef Feature) const override;
+};
+
+class LLVM_LIBRARY_VISIBILITY LoongArch32TargetInfo
+    : public LoongArchTargetInfo {
+public:
+  LoongArch32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+      : LoongArchTargetInfo(Triple, Opts) {
+    IntPtrType = SignedInt;
+    PtrDiffType = SignedInt;
+    SizeType = UnsignedInt;
+    resetDataLayout("e-m:e-p:32:32-i64:64-n32-S128");
+    // TODO: select appropriate ABI.
+    setABI("ilp32d");
+  }
+
+  bool setABI(const std::string &Name) override {
+    if (Name == "ilp32d" || Name == "ilp32f" || Name == "ilp32s") {
+      ABI = Name;
+      return true;
+    }
+    return false;
+  }
+  void setMaxAtomicWidth() override {
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 32;
+  }
+};
+
+class LLVM_LIBRARY_VISIBILITY LoongArch64TargetInfo
+    : public LoongArchTargetInfo {
+public:
+  LoongArch64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+      : LoongArchTargetInfo(Triple, Opts) {
+    LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
+    IntMaxType = Int64Type = SignedLong;
+    resetDataLayout("e-m:e-p:64:64-i64:64-i128:128-n64-S128");
+    // TODO: select appropriate ABI.
+    setABI("lp64d");
+  }
+
+  bool setABI(const std::string &Name) override {
+    if (Name == "lp64d" || Name == "lp64f" || Name == "lp64s") {
+      ABI = Name;
+      return true;
+    }
+    return false;
+  }
+  void setMaxAtomicWidth() override {
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
+  }
+};
+} // end namespace targets
+} // end namespace clang
+
+#endif // LLVM_CLANG_LIB_BASIC_TARGETS_LOONGARCH_H