diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/CMakeLists.txt b/llvm/lib/Target/RISCV/MCTargetDesc/CMakeLists.txt
--- a/llvm/lib/Target/RISCV/MCTargetDesc/CMakeLists.txt
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/CMakeLists.txt
@@ -6,6 +6,7 @@
   RISCVMCAsmInfo.cpp
   RISCVMCCodeEmitter.cpp
   RISCVMCExpr.cpp
+  RISCVMCObjectFileInfo.cpp
   RISCVMCTargetDesc.cpp
   RISCVMatInt.cpp
   RISCVTargetStreamer.cpp
diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCObjectFileInfo.h b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCObjectFileInfo.h
new file mode 100644
--- /dev/null
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCObjectFileInfo.h
@@ -0,0 +1,28 @@
+//===-- RISCVMCAsmInfo.h - RISCV Asm Info ----------------------*- 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 contains the declaration of the RISCVMCAsmInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCOBJECTFILEINFO_H
+#define LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCOBJECTFILEINFO_H
+
+#include "llvm/MC/MCObjectFileInfo.h"
+
+namespace llvm {
+class Triple;
+
+class RISCVMCObjectFileInfo : public MCObjectFileInfo {
+public:
+  unsigned getTextSectionAlignment() const;
+};
+
+} // namespace llvm
+
+#endif
diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCObjectFileInfo.cpp b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCObjectFileInfo.cpp
new file mode 100644
--- /dev/null
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCObjectFileInfo.cpp
@@ -0,0 +1,26 @@
+//===-- RISCVMCAsmInfo.cpp - RISCV Asm properties -------------------------===//
+//
+// 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 contains the declarations of the RISCVMCAsmInfo properties.
+//
+//===----------------------------------------------------------------------===//
+
+#include "RISCVMCObjectFileInfo.h"
+#include "RISCVMCTargetDesc.h"
+#include "llvm/MC/MCContext.h"
+
+using namespace llvm;
+
+unsigned RISCVMCObjectFileInfo::getTextSectionAlignment() const {
+  MCContext &Ctx = getContext();
+  const MCSubtargetInfo *STI = Ctx.getSubtargetInfo();
+  if (STI->hasFeature(RISCV::FeatureStdExtC)) {
+    return 2;
+  }
+  return 4;
+}
diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.cpp b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.cpp
--- a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.cpp
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.cpp
@@ -15,12 +15,14 @@
 #include "RISCVELFStreamer.h"
 #include "RISCVInstPrinter.h"
 #include "RISCVMCAsmInfo.h"
+#include "RISCVMCObjectFileInfo.h"
 #include "RISCVTargetStreamer.h"
 #include "TargetInfo/RISCVTargetInfo.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCInstrAnalysis.h"
 #include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSubtargetInfo.h"
@@ -62,6 +64,14 @@
   return MAI;
 }
 
+static MCObjectFileInfo *
+createRISCVMCObjectFileInfo(bool PIC, MCContext &ctx,
+                            bool LargeCodeModel = false) {
+  MCObjectFileInfo *MOFI = new RISCVMCObjectFileInfo();
+  MOFI->InitMCObjectFileInfo(PIC, ctx, LargeCodeModel);
+  return MOFI;
+}
+
 static MCSubtargetInfo *createRISCVMCSubtargetInfo(const Triple &TT,
                                                    StringRef CPU, StringRef FS) {
   if (CPU.empty())
@@ -141,6 +151,7 @@
 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeRISCVTargetMC() {
   for (Target *T : {&getTheRISCV32Target(), &getTheRISCV64Target()}) {
     TargetRegistry::RegisterMCAsmInfo(*T, createRISCVMCAsmInfo);
+    TargetRegistry::RegisterMCObjectFileInfo(*T, createRISCVMCObjectFileInfo);
     TargetRegistry::RegisterMCInstrInfo(*T, createRISCVMCInstrInfo);
     TargetRegistry::RegisterMCRegInfo(*T, createRISCVMCRegisterInfo);
     TargetRegistry::RegisterMCAsmBackend(*T, createRISCVAsmBackend);
diff --git a/llvm/test/MC/RISCV/align.s b/llvm/test/MC/RISCV/align.s
--- a/llvm/test/MC/RISCV/align.s
+++ b/llvm/test/MC/RISCV/align.s
@@ -33,13 +33,15 @@
 # Linker could satisfy alignment by removing NOPs after linker relaxation.
 
 # The first R_RISCV_ALIGN come from
-# MCELFStreamer::InitSections() emitCodeAlignment(4).
+# MCELFStreamer::InitSections() emitCodeAlignment(getTextSectionAligntment()).
 # C-EXT-RELAX-RELOC: R_RISCV_ALIGN - 0x2
 # C-EXT-RELAX-INST:  c.nop
 test:
 	.p2align 2
-# C-EXT-RELAX-RELOC: R_RISCV_ALIGN - 0x2
-# C-EXT-RELAX-INST:  c.nop
+# If the +c extension is enable, the text section will be 2-byte aligned, so
+# one c.nop instruction is sufficient.
+# C-EXT-RELAX-RELOC-NOT: R_RISCV_ALIGN - 0x2
+# C-EXT-RELAX-INST-NOT:  c.nop
 	bne     zero, a0, .LBB0_2
 	mv	a0, zero
 	.p2align 3