1 files changed, 50 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVSubtarget.cpp b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVSubtarget.cpp
new file mode 100644
index 000000000000..6902ed75d852
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVSubtarget.cpp
@@ -0,0 +1,50 @@
+//===-- RISCVSubtarget.cpp - RISCV Subtarget Information ------------------===//
+//
+// 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 implements the RISCV specific subclass of TargetSubtargetInfo.
+//
+//===----------------------------------------------------------------------===//
+
+#include "RISCVSubtarget.h"
+#include "RISCV.h"
+#include "RISCVFrameLowering.h"
+#include "llvm/Support/TargetRegistry.h"
+
+using namespace llvm;
+
+#define DEBUG_TYPE "riscv-subtarget"
+
+#define GET_SUBTARGETINFO_TARGET_DESC
+#define GET_SUBTARGETINFO_CTOR
+#include "RISCVGenSubtargetInfo.inc"
+
+void RISCVSubtarget::anchor() {}
+
+RISCVSubtarget &RISCVSubtarget::initializeSubtargetDependencies(
+    const Triple &TT, StringRef CPU, StringRef FS, StringRef ABIName) {
+  // Determine default and user-specified characteristics
+  bool Is64Bit = TT.isArch64Bit();
+  std::string CPUName = CPU;
+  if (CPUName.empty())
+    CPUName = Is64Bit ? "generic-rv64" : "generic-rv32";
+  ParseSubtargetFeatures(CPUName, FS);
+  if (Is64Bit) {
+    XLenVT = MVT::i64;
+    XLen = 64;
+  }
+
+  TargetABI = RISCVABI::computeTargetABI(TT, getFeatureBits(), ABIName);
+  RISCVFeatures::validate(TT, getFeatureBits());
+  return *this;
+}
+
+RISCVSubtarget::RISCVSubtarget(const Triple &TT, StringRef CPU, StringRef FS,
+                               StringRef ABIName, const TargetMachine &TM)
+    : RISCVGenSubtargetInfo(TT, CPU, FS),
+      FrameLowering(initializeSubtargetDependencies(TT, CPU, FS, ABIName)),
+      InstrInfo(), RegInfo(getHwMode()), TLInfo(TM, *this) {}