[RISCV] Add the RISCV target and compiler driver
As RV64 codegen has not yet been upstreamed into LLVM, we focus on RV32 driver
support (RV64 to follow).
Differential Revision: https://reviews.llvm.org/D39963
llvm-svn: 322276
diff --git a/clang/lib/Basic/Targets/RISCV.h b/clang/lib/Basic/Targets/RISCV.h
new file mode 100644
index 0000000..b35afd7
--- /dev/null
+++ b/clang/lib/Basic/Targets/RISCV.h
@@ -0,0 +1,103 @@
+//===--- RISCV.h - Declare RISCV target feature support ---------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares RISCV TargetInfo objects.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H
+#define LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_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 {
+
+// RISC-V Target
+class RISCVTargetInfo : public TargetInfo {
+protected:
+ std::string ABI;
+
+public:
+ RISCVTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
+ : TargetInfo(Triple) {
+ TLSSupported = 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 { return None; }
+
+ BuiltinVaListKind getBuiltinVaListKind() const override {
+ return TargetInfo::VoidPtrBuiltinVaList;
+ }
+
+ const char *getClobbers() const override { return ""; }
+
+ ArrayRef<const char *> getGCCRegNames() const override;
+
+ ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
+
+ bool validateAsmConstraint(const char *&Name,
+ TargetInfo::ConstraintInfo &Info) const override {
+ return false;
+ }
+};
+class LLVM_LIBRARY_VISIBILITY RISCV32TargetInfo : public RISCVTargetInfo {
+public:
+ RISCV32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+ : RISCVTargetInfo(Triple, Opts) {
+ IntPtrType = SignedInt;
+ PtrDiffType = SignedInt;
+ SizeType = UnsignedInt;
+ resetDataLayout("e-m:e-p:32:32-i64:64-n32-S128");
+ }
+
+ bool setABI(const std::string &Name) override {
+ // TODO: support ilp32f and ilp32d ABIs.
+ if (Name == "ilp32") {
+ ABI = Name;
+ return true;
+ }
+ return false;
+ }
+};
+class LLVM_LIBRARY_VISIBILITY RISCV64TargetInfo : public RISCVTargetInfo {
+public:
+ RISCV64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+ : RISCVTargetInfo(Triple, Opts) {
+ LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
+ IntMaxType = Int64Type = SignedLong;
+ resetDataLayout("e-m:e-p:64:64-i64:64-i128:128-n64-S128");
+ }
+
+ bool setABI(const std::string &Name) override {
+ // TODO: support lp64f and lp64d ABIs.
+ if (Name == "lp64") {
+ ABI = Name;
+ return true;
+ }
+ return false;
+ }
+};
+} // namespace targets
+} // namespace clang
+
+#endif // LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H