diff --git a/llvm/lib/Target/RISCV/CMakeLists.txt b/llvm/lib/Target/RISCV/CMakeLists.txt
--- a/llvm/lib/Target/RISCV/CMakeLists.txt
+++ b/llvm/lib/Target/RISCV/CMakeLists.txt
@@ -27,6 +27,7 @@
   RISCVSubtarget.cpp
   RISCVTargetMachine.cpp
   RISCVTargetObjectFile.cpp
+  RISCVTargetTransformInfo.cpp
   )
 
 add_subdirectory(AsmParser)
diff --git a/llvm/lib/Target/RISCV/LLVMBuild.txt b/llvm/lib/Target/RISCV/LLVMBuild.txt
--- a/llvm/lib/Target/RISCV/LLVMBuild.txt
+++ b/llvm/lib/Target/RISCV/LLVMBuild.txt
@@ -29,6 +29,6 @@
 type = Library
 name = RISCVCodeGen
 parent = RISCV
-required_libraries = AsmPrinter Core CodeGen MC RISCVDesc
+required_libraries = Analysis AsmPrinter Core CodeGen MC RISCVDesc
   RISCVInfo RISCVUtils SelectionDAG Support Target
 add_to_library_groups = RISCV
diff --git a/llvm/lib/Target/RISCV/RISCVTargetMachine.h b/llvm/lib/Target/RISCV/RISCVTargetMachine.h
--- a/llvm/lib/Target/RISCV/RISCVTargetMachine.h
+++ b/llvm/lib/Target/RISCV/RISCVTargetMachine.h
@@ -39,6 +39,8 @@
   TargetLoweringObjectFile *getObjFileLowering() const override {
     return TLOF.get();
   }
+
+  TargetTransformInfo getTargetTransformInfo(const Function &F) override;
 };
 }
 
diff --git a/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp b/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
--- a/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
@@ -10,11 +10,13 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "RISCV.h"
 #include "RISCVTargetMachine.h"
+#include "RISCV.h"
 #include "RISCVTargetObjectFile.h"
+#include "RISCVTargetTransformInfo.h"
 #include "TargetInfo/RISCVTargetInfo.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 #include "llvm/CodeGen/TargetPassConfig.h"
@@ -61,6 +63,11 @@
   initAsmInfo();
 }
 
+TargetTransformInfo
+RISCVTargetMachine::getTargetTransformInfo(const Function &F) {
+  return TargetTransformInfo(RISCVTTIImpl(this, F));
+}
+
 namespace {
 class RISCVPassConfig : public TargetPassConfig {
 public:
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
new file mode 100644
--- /dev/null
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
@@ -0,0 +1,54 @@
+//===- RISCVTargetTransformInfo.h - RISC-V specific TTI ---------*- 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
+//
+//===----------------------------------------------------------------------===//
+/// \file
+/// This file a TargetTransformInfo::Concept conforming object specific to the
+/// RISC-V target machine. It uses the target's detailed information to
+/// provide more precise answers to certain TTI queries, while letting the
+/// target independent and default TTI implementations handle the rest.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_RISCV_RISCVTARGETTRANSFORMINFO_H
+#define LLVM_LIB_TARGET_RISCV_RISCVTARGETTRANSFORMINFO_H
+
+#include "RISCVSubtarget.h"
+#include "RISCVTargetMachine.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/CodeGen/BasicTTIImpl.h"
+#include "llvm/IR/Function.h"
+
+namespace llvm {
+
+class RISCVTTIImpl : public BasicTTIImplBase<RISCVTTIImpl> {
+  using BaseT = BasicTTIImplBase<RISCVTTIImpl>;
+  using TTI = TargetTransformInfo;
+
+  friend BaseT;
+
+  const RISCVSubtarget *ST;
+  const RISCVTargetLowering *TLI;
+
+  const RISCVSubtarget *getST() const { return ST; }
+  const RISCVTargetLowering *getTLI() const { return TLI; }
+
+public:
+  explicit RISCVTTIImpl(const RISCVTargetMachine *TM, const Function &F)
+      : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
+        TLI(ST->getTargetLowering()) {}
+
+  using BaseT::getIntImmCost;
+  int getIntImmCost(int64_t Val);
+  int getIntImmCost(const APInt &Imm, Type *Ty);
+  int getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
+  int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
+                    Type *Ty);
+};
+
+} // end namespace llvm
+
+#endif // LLVM_LIB_TARGET_RISCV_RISCVTARGETTRANSFORMINFO_H
\ No newline at end of file
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
new file mode 100644
--- /dev/null
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -0,0 +1,44 @@
+//===-- RISCVTargetTransformInfo.cpp - RISC-V specific TTI ----------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "RISCVTargetTransformInfo.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/CodeGen/BasicTTIImpl.h"
+#include "llvm/CodeGen/TargetLowering.h"
+using namespace llvm;
+
+#define DEBUG_TYPE "riscvtti"
+
+int RISCVTTIImpl::getIntImmCost(int64_t Val) {
+  if (Val == 0)
+    return TTI::TCC_Free;
+
+  if (getTLI()->isLegalAddImmediate(Val))
+    return TTI::TCC_Free;
+
+  if (isInt<32>(Val))
+    return TTI::TCC_Basic;
+
+  return TTI::TCC_Expensive;
+}
+
+int RISCVTTIImpl::getIntImmCost(const APInt &Imm, Type *Ty) {
+  assert(Ty->isIntegerTy());
+
+  return getIntImmCost(Imm.getSExtValue());
+}
+
+int RISCVTTIImpl::getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm,
+                                Type *Ty) {
+  return getIntImmCost(Imm, Ty);
+}
+
+int RISCVTTIImpl::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
+                                const APInt &Imm, Type *Ty) {
+  return getIntImmCost(Imm, Ty);
+}
diff --git a/llvm/test/Transforms/ConstantHoisting/RISCV/immediates.ll b/llvm/test/Transforms/ConstantHoisting/RISCV/immediates.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Transforms/ConstantHoisting/RISCV/immediates.ll
@@ -0,0 +1,38 @@
+; RUN: opt -mtriple=riscv32-unknown-elf -S -consthoist < %s | FileCheck %s
+; RUN: opt -mtriple=riscv64-unknown-elf -S -consthoist < %s | FileCheck %s
+
+; Check that we don't hoist immediates with small values.
+define i64 @test1(i64 %a) nounwind {
+; CHECK-LABEL: test1
+; CHECK-NOT: %const = bitcast i64 2 to i64
+  %1 = mul i64 %a, 2
+  %2 = add i64 %1, 2
+  ret i64 %2
+}
+
+; Check that we don't hoist immediates with small values.
+define i64 @test2(i64 %a) nounwind {
+; CHECK-LABEL: test2
+; CHECK-NOT: %const = bitcast i64 2047 to i64
+  %1 = mul i64 %a, 2047
+  %2 = add i64 %1, 2047
+  ret i64 %2
+}
+
+; Check that we don't hoist immediates with large values.
+define i64 @test3(i64 %a) nounwind {
+; CHECK-LABEL: test3
+; CHECK-NOT: %const = bitcast i64 2147483647 to i64
+  %1 = mul i64 %a, 2147483647
+  %2 = add i64 %1, 2147483647
+  ret i64 %2
+}
+
+; Check that we hoist immediates with huge values
+define i64 @test4(i64 %a) nounwind {
+; CHECK-LABEL: test4
+; CHECK: %const = bitcast i64 2147483648 to i64
+  %1 = mul i64 %a, 2147483648
+  %2 = add i64 %1, 2147483648
+  ret i64 %2
+}
\ No newline at end of file
diff --git a/llvm/test/Transforms/ConstantHoisting/RISCV/lit.local.cfg b/llvm/test/Transforms/ConstantHoisting/RISCV/lit.local.cfg
new file mode 100644
--- /dev/null
+++ b/llvm/test/Transforms/ConstantHoisting/RISCV/lit.local.cfg
@@ -0,0 +1,3 @@
+if not 'RISCV' in config.root.targets:
+    config.unsupported = True
+