diff --git a/clang/include/clang/Basic/BuiltinsRISCV.def b/clang/include/clang/Basic/BuiltinsRISCV.def
--- a/clang/include/clang/Basic/BuiltinsRISCV.def
+++ b/clang/include/clang/Basic/BuiltinsRISCV.def
@@ -21,6 +21,11 @@
 TARGET_BUILTIN(__builtin_riscv_orc_b_32, "ZiZi", "nc", "experimental-zbb")
 TARGET_BUILTIN(__builtin_riscv_orc_b_64, "WiWi", "nc", "experimental-zbb")
 
+// Zbc extension
+TARGET_BUILTIN(__builtin_riscv_clmul, "LiLiLi", "nc", "experimental-zbc")
+TARGET_BUILTIN(__builtin_riscv_clmulh, "LiLiLi", "nc", "experimental-zbc")
+TARGET_BUILTIN(__builtin_riscv_clmulr, "LiLiLi", "nc", "experimental-zbc")
+
 // Zbr extension
 TARGET_BUILTIN(__builtin_riscv_crc32_b, "LiLi", "nc", "experimental-zbr")
 TARGET_BUILTIN(__builtin_riscv_crc32_h, "LiLi", "nc", "experimental-zbr")
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -17884,6 +17884,20 @@
     IntrinsicTypes = {ResultType};
     break;
 
+  // Zbc
+  case RISCV::BI__builtin_riscv_clmul:
+    ID = Intrinsic::riscv_clmul;
+    IntrinsicTypes = {ResultType};
+    break;
+  case RISCV::BI__builtin_riscv_clmulh:
+    ID = Intrinsic::riscv_clmulh;
+    IntrinsicTypes = {ResultType};
+    break;
+  case RISCV::BI__builtin_riscv_clmulr:
+    ID = Intrinsic::riscv_clmulr;
+    IntrinsicTypes = {ResultType};
+    break;
+
   // Zbr
   case RISCV::BI__builtin_riscv_crc32_b:
     ID = Intrinsic::riscv_crc32_b;
diff --git a/clang/test/CodeGen/RISCV/rvb-intrinsics/riscv32-zbc.c b/clang/test/CodeGen/RISCV/rvb-intrinsics/riscv32-zbc.c
new file mode 100644
--- /dev/null
+++ b/clang/test/CodeGen/RISCV/rvb-intrinsics/riscv32-zbc.c
@@ -0,0 +1,48 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
+// RUN: %clang_cc1 -triple riscv32 -target-feature +experimental-zbc -emit-llvm %s -o - \
+// RUN:     | FileCheck %s  -check-prefix=RV32ZBC
+
+// RV32ZBC-LABEL: @clmul(
+// RV32ZBC-NEXT:  entry:
+// RV32ZBC-NEXT:    [[A_ADDR:%.*]] = alloca i32, align 4
+// RV32ZBC-NEXT:    [[B_ADDR:%.*]] = alloca i32, align 4
+// RV32ZBC-NEXT:    store i32 [[A:%.*]], i32* [[A_ADDR]], align 4
+// RV32ZBC-NEXT:    store i32 [[B:%.*]], i32* [[B_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP0:%.*]] = load i32, i32* [[A_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP1:%.*]] = load i32, i32* [[B_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP2:%.*]] = call i32 @llvm.riscv.clmul.i32(i32 [[TMP0]], i32 [[TMP1]])
+// RV32ZBC-NEXT:    ret i32 [[TMP2]]
+//
+long clmul(long a, long b) {
+  return __builtin_riscv_clmul(a, b);
+}
+
+// RV32ZBC-LABEL: @clmulh(
+// RV32ZBC-NEXT:  entry:
+// RV32ZBC-NEXT:    [[A_ADDR:%.*]] = alloca i32, align 4
+// RV32ZBC-NEXT:    [[B_ADDR:%.*]] = alloca i32, align 4
+// RV32ZBC-NEXT:    store i32 [[A:%.*]], i32* [[A_ADDR]], align 4
+// RV32ZBC-NEXT:    store i32 [[B:%.*]], i32* [[B_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP0:%.*]] = load i32, i32* [[A_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP1:%.*]] = load i32, i32* [[B_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP2:%.*]] = call i32 @llvm.riscv.clmulh.i32(i32 [[TMP0]], i32 [[TMP1]])
+// RV32ZBC-NEXT:    ret i32 [[TMP2]]
+//
+long clmulh(long a, long b) {
+  return __builtin_riscv_clmulh(a, b);
+}
+
+// RV32ZBC-LABEL: @clmulr(
+// RV32ZBC-NEXT:  entry:
+// RV32ZBC-NEXT:    [[A_ADDR:%.*]] = alloca i32, align 4
+// RV32ZBC-NEXT:    [[B_ADDR:%.*]] = alloca i32, align 4
+// RV32ZBC-NEXT:    store i32 [[A:%.*]], i32* [[A_ADDR]], align 4
+// RV32ZBC-NEXT:    store i32 [[B:%.*]], i32* [[B_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP0:%.*]] = load i32, i32* [[A_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP1:%.*]] = load i32, i32* [[B_ADDR]], align 4
+// RV32ZBC-NEXT:    [[TMP2:%.*]] = call i32 @llvm.riscv.clmulr.i32(i32 [[TMP0]], i32 [[TMP1]])
+// RV32ZBC-NEXT:    ret i32 [[TMP2]]
+//
+long clmulr(long a, long b) {
+  return __builtin_riscv_clmulr(a, b);
+}
diff --git a/clang/test/CodeGen/RISCV/rvb-intrinsics/riscv64-zbc.c b/clang/test/CodeGen/RISCV/rvb-intrinsics/riscv64-zbc.c
new file mode 100644
--- /dev/null
+++ b/clang/test/CodeGen/RISCV/rvb-intrinsics/riscv64-zbc.c
@@ -0,0 +1,48 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
+// RUN: %clang_cc1 -triple riscv64 -target-feature +experimental-zbc -emit-llvm %s -o - \
+// RUN:     | FileCheck %s  -check-prefix=RV64ZBC
+
+// RV64ZBC-LABEL: @clmul(
+// RV64ZBC-NEXT:  entry:
+// RV64ZBC-NEXT:    [[A_ADDR:%.*]] = alloca i64, align 8
+// RV64ZBC-NEXT:    [[B_ADDR:%.*]] = alloca i64, align 8
+// RV64ZBC-NEXT:    store i64 [[A:%.*]], i64* [[A_ADDR]], align 8
+// RV64ZBC-NEXT:    store i64 [[B:%.*]], i64* [[B_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP0:%.*]] = load i64, i64* [[A_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP1:%.*]] = load i64, i64* [[B_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP2:%.*]] = call i64 @llvm.riscv.clmul.i64(i64 [[TMP0]], i64 [[TMP1]])
+// RV64ZBC-NEXT:    ret i64 [[TMP2]]
+//
+long clmul(long a, long b) {
+  return __builtin_riscv_clmul(a, b);
+}
+
+// RV64ZBC-LABEL: @clmulh(
+// RV64ZBC-NEXT:  entry:
+// RV64ZBC-NEXT:    [[A_ADDR:%.*]] = alloca i64, align 8
+// RV64ZBC-NEXT:    [[B_ADDR:%.*]] = alloca i64, align 8
+// RV64ZBC-NEXT:    store i64 [[A:%.*]], i64* [[A_ADDR]], align 8
+// RV64ZBC-NEXT:    store i64 [[B:%.*]], i64* [[B_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP0:%.*]] = load i64, i64* [[A_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP1:%.*]] = load i64, i64* [[B_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP2:%.*]] = call i64 @llvm.riscv.clmulh.i64(i64 [[TMP0]], i64 [[TMP1]])
+// RV64ZBC-NEXT:    ret i64 [[TMP2]]
+//
+long clmulh(long a, long b) {
+  return __builtin_riscv_clmulh(a, b);
+}
+
+// RV64ZBC-LABEL: @clmulr(
+// RV64ZBC-NEXT:  entry:
+// RV64ZBC-NEXT:    [[A_ADDR:%.*]] = alloca i64, align 8
+// RV64ZBC-NEXT:    [[B_ADDR:%.*]] = alloca i64, align 8
+// RV64ZBC-NEXT:    store i64 [[A:%.*]], i64* [[A_ADDR]], align 8
+// RV64ZBC-NEXT:    store i64 [[B:%.*]], i64* [[B_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP0:%.*]] = load i64, i64* [[A_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP1:%.*]] = load i64, i64* [[B_ADDR]], align 8
+// RV64ZBC-NEXT:    [[TMP2:%.*]] = call i64 @llvm.riscv.clmulr.i64(i64 [[TMP0]], i64 [[TMP1]])
+// RV64ZBC-NEXT:    ret i64 [[TMP2]]
+//
+long clmulr(long a, long b) {
+  return __builtin_riscv_clmulr(a, b);
+}
diff --git a/llvm/include/llvm/IR/IntrinsicsRISCV.td b/llvm/include/llvm/IR/IntrinsicsRISCV.td
--- a/llvm/include/llvm/IR/IntrinsicsRISCV.td
+++ b/llvm/include/llvm/IR/IntrinsicsRISCV.td
@@ -76,10 +76,19 @@
       : Intrinsic<[llvm_any_ty],
                   [LLVMMatchType<0>],
                   [IntrNoMem, IntrSpeculatable, IntrWillReturn]>;
+  class BitManipGPRGPRIntrinsics
+      : Intrinsic<[llvm_any_ty],
+                  [LLVMMatchType<0>, LLVMMatchType<0>],
+                  [IntrNoMem, IntrSpeculatable, IntrWillReturn]>;
 
   // Zbb
   def int_riscv_orc_b : BitManipGPRIntrinsics;
 
+  // Zbc
+  def int_riscv_clmul  : BitManipGPRGPRIntrinsics;
+  def int_riscv_clmulh : BitManipGPRGPRIntrinsics;
+  def int_riscv_clmulr : BitManipGPRGPRIntrinsics;
+
   // Zbr
   def int_riscv_crc32_b : BitManipGPRIntrinsics;
   def int_riscv_crc32_h : BitManipGPRIntrinsics;
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoB.td b/llvm/lib/Target/RISCV/RISCVInstrInfoB.td
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoB.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoB.td
@@ -898,6 +898,12 @@
 def : PatGpr<int_riscv_orc_b, ORCB>;
 } // Predicates = [HasStdExtZbb]
 
+let Predicates = [HasStdExtZbc] in {
+def : PatGprGpr<int_riscv_clmul, CLMUL>;
+def : PatGprGpr<int_riscv_clmulh, CLMULH>;
+def : PatGprGpr<int_riscv_clmulr, CLMULR>;
+} // Predicates = [HasStdExtZbc]
+
 let Predicates = [HasStdExtZbr] in {
 def : PatGpr<int_riscv_crc32_b, CRC32B>;
 def : PatGpr<int_riscv_crc32_h, CRC32H>;
diff --git a/llvm/test/CodeGen/RISCV/rv32zbc-intrinsic.ll b/llvm/test/CodeGen/RISCV/rv32zbc-intrinsic.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rv32zbc-intrinsic.ll
@@ -0,0 +1,53 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+experimental-b -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s -check-prefix=RV32IB
+; RUN: llc -mtriple=riscv32 -mattr=+experimental-zbc -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s -check-prefix=RV32IBC
+
+declare i32 @llvm.riscv.clmul.i32(i32 %a, i32 %b)
+
+define i32 @clmul32(i32 %a, i32 %b) nounwind {
+; RV32IB-LABEL: clmul32:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    clmul a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBC-LABEL: clmul32:
+; RV32IBC:       # %bb.0:
+; RV32IBC-NEXT:    clmul a0, a0, a1
+; RV32IBC-NEXT:    ret
+  %tmp = call i32 @llvm.riscv.clmul.i32(i32 %a, i32 %b)
+ ret i32 %tmp
+}
+
+declare i32 @llvm.riscv.clmulh.i32(i32 %a, i32 %b)
+
+define i32 @clmul32h(i32 %a, i32 %b) nounwind {
+; RV32IB-LABEL: clmul32h:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    clmulh a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBC-LABEL: clmul32h:
+; RV32IBC:       # %bb.0:
+; RV32IBC-NEXT:    clmulh a0, a0, a1
+; RV32IBC-NEXT:    ret
+  %tmp = call i32 @llvm.riscv.clmulh.i32(i32 %a, i32 %b)
+ ret i32 %tmp
+}
+
+declare i32 @llvm.riscv.clmulr.i32(i32 %a, i32 %b)
+
+define i32 @clmul32r(i32 %a, i32 %b) nounwind {
+; RV32IB-LABEL: clmul32r:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    clmulr a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBC-LABEL: clmul32r:
+; RV32IBC:       # %bb.0:
+; RV32IBC-NEXT:    clmulr a0, a0, a1
+; RV32IBC-NEXT:    ret
+  %tmp = call i32 @llvm.riscv.clmulr.i32(i32 %a, i32 %b)
+ ret i32 %tmp
+}
diff --git a/llvm/test/CodeGen/RISCV/rv64zbc-intrinsic.ll b/llvm/test/CodeGen/RISCV/rv64zbc-intrinsic.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rv64zbc-intrinsic.ll
@@ -0,0 +1,53 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv64 -mattr=+experimental-b -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s -check-prefix=RV64IB
+; RUN: llc -mtriple=riscv64 -mattr=+experimental-zbc -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s -check-prefix=RV64IBC
+
+declare i64 @llvm.riscv.clmul.i64(i64 %a, i64 %b)
+
+define i64 @clmul64(i64 %a, i64 %b) nounwind {
+; RV64IB-LABEL: clmul64:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    clmul a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBC-LABEL: clmul64:
+; RV64IBC:       # %bb.0:
+; RV64IBC-NEXT:    clmul a0, a0, a1
+; RV64IBC-NEXT:    ret
+  %tmp = call i64 @llvm.riscv.clmul.i64(i64 %a, i64 %b)
+ ret i64 %tmp
+}
+
+declare i64 @llvm.riscv.clmulh.i64(i64 %a, i64 %b)
+
+define i64 @clmul64h(i64 %a, i64 %b) nounwind {
+; RV64IB-LABEL: clmul64h:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    clmulh a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBC-LABEL: clmul64h:
+; RV64IBC:       # %bb.0:
+; RV64IBC-NEXT:    clmulh a0, a0, a1
+; RV64IBC-NEXT:    ret
+  %tmp = call i64 @llvm.riscv.clmulh.i64(i64 %a, i64 %b)
+ ret i64 %tmp
+}
+
+declare i64 @llvm.riscv.clmulr.i64(i64 %a, i64 %b)
+
+define i64 @clmul64r(i64 %a, i64 %b) nounwind {
+; RV64IB-LABEL: clmul64r:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    clmulr a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBC-LABEL: clmul64r:
+; RV64IBC:       # %bb.0:
+; RV64IBC-NEXT:    clmulr a0, a0, a1
+; RV64IBC-NEXT:    ret
+  %tmp = call i64 @llvm.riscv.clmulr.i64(i64 %a, i64 %b)
+ ret i64 %tmp
+}