[clang] 3198364 - [RISCV][Clang] Add support for Zmmul extension
via cfe-commits
cfe-commits at lists.llvm.org
Mon Jul 18 17:28:30 PDT 2022
Author: ksyx
Date: 2022-07-18T20:26:08-04:00
New Revision: 3198364e6e4943512ed48f2a1c1ab4c418b72f42
URL: https://github.com/llvm/llvm-project/commit/3198364e6e4943512ed48f2a1c1ab4c418b72f42
DIFF: https://github.com/llvm/llvm-project/commit/3198364e6e4943512ed48f2a1c1ab4c418b72f42.diff
LOG: [RISCV][Clang] Add support for Zmmul extension
This patch implements recently ratified extension Zmmul, a subextension
of M (Integer Multiplication and Division) consisting only
multiplication part of it.
Differential Revision: https://reviews.llvm.org/D103313
Reviewed By: craig.topper, jrtc27, asb
Added:
llvm/test/CodeGen/RISCV/zmmul.ll
llvm/test/MC/RISCV/rv32zmmul-invaild.s
llvm/test/MC/RISCV/rv32zmmul-valid.s
llvm/test/MC/RISCV/rv64zmmul-invalid.s
llvm/test/MC/RISCV/rv64zmmul-valid.s
Modified:
clang/lib/Basic/Targets/RISCV.cpp
clang/test/Driver/riscv-arch.c
llvm/lib/Support/RISCVISAInfo.cpp
llvm/lib/Target/RISCV/RISCV.td
llvm/lib/Target/RISCV/RISCVISelLowering.cpp
llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
llvm/lib/Target/RISCV/RISCVInstrInfoM.td
llvm/lib/Target/RISCV/RISCVSubtarget.h
llvm/test/CodeGen/RISCV/attributes.ll
llvm/test/MC/RISCV/rv32i-invalid.s
Removed:
################################################################################
diff --git a/clang/lib/Basic/Targets/RISCV.cpp b/clang/lib/Basic/Targets/RISCV.cpp
index cb2cdb50e18e5..7e6c0620385a1 100644
--- a/clang/lib/Basic/Targets/RISCV.cpp
+++ b/clang/lib/Basic/Targets/RISCV.cpp
@@ -158,8 +158,10 @@ void RISCVTargetInfo::getTargetDefines(const LangOptions &Opts,
Builder.defineMacro(Twine("__riscv_", ExtName), Twine(Version));
}
- if (ISAInfo->hasExtension("m")) {
+ if (ISAInfo->hasExtension("m") || ISAInfo->hasExtension("zmmul"))
Builder.defineMacro("__riscv_mul");
+
+ if (ISAInfo->hasExtension("m")) {
Builder.defineMacro("__riscv_div");
Builder.defineMacro("__riscv_muldiv");
}
diff --git a/clang/test/Driver/riscv-arch.c b/clang/test/Driver/riscv-arch.c
index 0ea96596dab76..edfa659a16d0b 100644
--- a/clang/test/Driver/riscv-arch.c
+++ b/clang/test/Driver/riscv-arch.c
@@ -579,3 +579,12 @@
// RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-ZHINX-BADVERS %s
// RV32-ZHINX-BADVERS: error: invalid arch name 'rv32izhinx0p1'
// RV32-ZHINX-BADVERS: unsupported version number 0.1 for extension 'zhinx'
+
+// RUN: %clang -target riscv32-unknown-elf -march=rv32i_zmmul2p0 -### %s \
+// RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-ZMMUL-BADVERS %s
+// RV32-ZMMUL-BADVERS: error: invalid arch name 'rv32i_zmmul2p0'
+// RV32-ZMMUL-BADVERS: unsupported version number 2.0 for extension
+
+// RUN: %clang -target riscv32-unknown-elf -march=rv32i_zmmul1p0 -### %s \
+// RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-ZMMUL-GOODVERS %s
+// RV32-ZMMUL-GOODVERS: "-target-feature" "+zmmul"
diff --git a/llvm/lib/Support/RISCVISAInfo.cpp b/llvm/lib/Support/RISCVISAInfo.cpp
index 7fe04af4696b8..0fe286d239d4e 100644
--- a/llvm/lib/Support/RISCVISAInfo.cpp
+++ b/llvm/lib/Support/RISCVISAInfo.cpp
@@ -77,6 +77,8 @@ static const RISCVSupportedExtension SupportedExtensions[] = {
{"zkt", RISCVExtensionVersion{1, 0}},
{"zk", RISCVExtensionVersion{1, 0}},
+ {"zmmul", RISCVExtensionVersion{1, 0}},
+
{"v", RISCVExtensionVersion{1, 0}},
{"zvl32b", RISCVExtensionVersion{1, 0}},
{"zvl64b", RISCVExtensionVersion{1, 0}},
diff --git a/llvm/lib/Target/RISCV/RISCV.td b/llvm/lib/Target/RISCV/RISCV.td
index c0083da25f3bb..8a6f69c7f7cac 100644
--- a/llvm/lib/Target/RISCV/RISCV.td
+++ b/llvm/lib/Target/RISCV/RISCV.td
@@ -19,6 +19,19 @@ def HasStdExtM : Predicate<"Subtarget->hasStdExtM()">,
AssemblerPredicate<(all_of FeatureStdExtM),
"'M' (Integer Multiplication and Division)">;
+def FeatureStdExtZmmul
+ : SubtargetFeature<"zmmul", "HasStdExtZmmul", "true",
+ "'Zmmul' (Integer Multiplication)">;
+def HasStdExtZmmul : Predicate<"Subtarget->hasStdExtZmmul()">,
+ AssemblerPredicate<(all_of FeatureStdExtZmmul),
+ "'Zmmul' (Integer Multiplication)">;
+
+def HasStdExtMOrZmmul
+ : Predicate<"Subtarget->hasStdExtM() || Subtarget->hasStdExtZmmul()">,
+ AssemblerPredicate<(any_of FeatureStdExtM, FeatureStdExtZmmul),
+ "'M' (Integer Multiplication and Division) or "
+ "'Zmmul' (Integer Multiplication)">;
+
def FeatureStdExtA
: SubtargetFeature<"a", "HasStdExtA", "true",
"'A' (Atomic Instructions)">;
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 3fcc8c344ac18..a079f67d9eb8f 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -215,21 +215,26 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
setLibcallName(RTLIB::MULO_I64, nullptr);
}
- if (!Subtarget.hasStdExtM()) {
- setOperationAction({ISD::MUL, ISD::MULHS, ISD::MULHU, ISD::SDIV, ISD::UDIV,
- ISD::SREM, ISD::UREM},
- XLenVT, Expand);
+ if (!Subtarget.hasStdExtM() && !Subtarget.hasStdExtZmmul()) {
+ setOperationAction({ISD::MUL, ISD::MULHS, ISD::MULHU}, XLenVT, Expand);
} else {
if (Subtarget.is64Bit()) {
setOperationAction(ISD::MUL, {MVT::i32, MVT::i128}, Custom);
-
- setOperationAction({ISD::SDIV, ISD::UDIV, ISD::UREM},
- {MVT::i8, MVT::i16, MVT::i32}, Custom);
} else {
setOperationAction(ISD::MUL, MVT::i64, Custom);
}
}
+ if (!Subtarget.hasStdExtM()) {
+ setOperationAction({ISD::SDIV, ISD::UDIV, ISD::SREM, ISD::UREM},
+ XLenVT, Expand);
+ } else {
+ if (Subtarget.is64Bit()) {
+ setOperationAction({ISD::SDIV, ISD::UDIV, ISD::UREM},
+ {MVT::i8, MVT::i16, MVT::i32}, Custom);
+ }
+ }
+
setOperationAction(
{ISD::SDIVREM, ISD::UDIVREM, ISD::SMUL_LOHI, ISD::UMUL_LOHI}, XLenVT,
Expand);
@@ -12258,10 +12263,12 @@ bool RISCVTargetLowering::shouldSignExtendTypeInLibCall(EVT Type, bool IsSigned)
bool RISCVTargetLowering::decomposeMulByConstant(LLVMContext &Context, EVT VT,
SDValue C) const {
// Check integral scalar types.
+ const bool HasExtMOrZmmul =
+ Subtarget.hasStdExtM() || Subtarget.hasStdExtZmmul();
if (VT.isScalarInteger()) {
// Omit the optimization if the sub target has the M extension and the data
// size exceeds XLen.
- if (Subtarget.hasStdExtM() && VT.getSizeInBits() > Subtarget.getXLen())
+ if (HasExtMOrZmmul && VT.getSizeInBits() > Subtarget.getXLen())
return false;
if (auto *ConstNode = dyn_cast<ConstantSDNode>(C.getNode())) {
// Break the MUL to a SLLI and an ADD/SUB.
@@ -12276,7 +12283,7 @@ bool RISCVTargetLowering::decomposeMulByConstant(LLVMContext &Context, EVT VT,
return true;
// Omit the following optimization if the sub target has the M extension
// and the data size >= XLen.
- if (Subtarget.hasStdExtM() && VT.getSizeInBits() >= Subtarget.getXLen())
+ if (HasExtMOrZmmul && VT.getSizeInBits() >= Subtarget.getXLen())
return false;
// Break the MUL to two SLLI instructions and an ADD/SUB, if Imm needs
// a pair of LUI/ADDI.
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp b/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
index 318d8b15dc269..7c974ea6fedf1 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
@@ -1883,10 +1883,11 @@ Register RISCVInstrInfo::getVLENFactoredAmount(MachineFunction &MF,
} else {
Register N = MRI.createVirtualRegister(&RISCV::GPRRegClass);
movImm(MBB, II, DL, N, NumOfVReg, Flag);
- if (!STI.hasStdExtM())
+ if (!STI.hasStdExtM() && !STI.hasStdExtZmmul())
MF.getFunction().getContext().diagnose(DiagnosticInfoUnsupported{
MF.getFunction(),
- "M-extension must be enabled to calculate the vscaled size/offset."});
+ "M- or Zmmul-extension must be enabled to calculate the vscaled size/"
+ "offset."});
BuildMI(MBB, II, DL, get(RISCV::MUL), VL)
.addReg(VL, RegState::Kill)
.addReg(N, RegState::Kill)
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoM.td b/llvm/lib/Target/RISCV/RISCVInstrInfoM.td
index 72ba8460116fd..662604b138d22 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoM.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoM.td
@@ -24,7 +24,7 @@ def riscv_remuw : SDNode<"RISCVISD::REMUW", SDT_RISCVIntBinOpW>;
// Instructions
//===----------------------------------------------------------------------===//
-let Predicates = [HasStdExtM] in {
+let Predicates = [HasStdExtMOrZmmul] in {
def MUL : ALU_rr<0b0000001, 0b000, "mul", /*Commutable*/1>,
Sched<[WriteIMul, ReadIMul, ReadIMul]>;
def MULH : ALU_rr<0b0000001, 0b001, "mulh", /*Commutable*/1>,
@@ -33,6 +33,9 @@ def MULHSU : ALU_rr<0b0000001, 0b010, "mulhsu">,
Sched<[WriteIMul, ReadIMul, ReadIMul]>;
def MULHU : ALU_rr<0b0000001, 0b011, "mulhu", /*Commutable*/1>,
Sched<[WriteIMul, ReadIMul, ReadIMul]>;
+} // Predicates = [HasStdExtMOrZmmul]
+
+let Predicates = [HasStdExtM] in {
def DIV : ALU_rr<0b0000001, 0b100, "div">,
Sched<[WriteIDiv, ReadIDiv, ReadIDiv]>;
def DIVU : ALU_rr<0b0000001, 0b101, "divu">,
@@ -43,9 +46,12 @@ def REMU : ALU_rr<0b0000001, 0b111, "remu">,
Sched<[WriteIDiv, ReadIDiv, ReadIDiv]>;
} // Predicates = [HasStdExtM]
-let Predicates = [HasStdExtM, IsRV64] in {
+let Predicates = [HasStdExtMOrZmmul, IsRV64] in {
def MULW : ALUW_rr<0b0000001, 0b000, "mulw", /*Commutable*/1>,
Sched<[WriteIMul32, ReadIMul32, ReadIMul32]>;
+} // Predicates = [HasStdExtMOrZmmul, IsRV64]
+
+let Predicates = [HasStdExtM, IsRV64] in {
def DIVW : ALUW_rr<0b0000001, 0b100, "divw">,
Sched<[WriteIDiv32, ReadIDiv32, ReadIDiv32]>;
def DIVUW : ALUW_rr<0b0000001, 0b101, "divuw">,
@@ -60,21 +66,25 @@ def REMUW : ALUW_rr<0b0000001, 0b111, "remuw">,
// Pseudo-instructions and codegen patterns
//===----------------------------------------------------------------------===//
-let Predicates = [HasStdExtM] in {
+let Predicates = [HasStdExtMOrZmmul] in {
def : PatGprGpr<mul, MUL>;
def : PatGprGpr<mulhs, MULH>;
def : PatGprGpr<mulhu, MULHU>;
def : PatGprGpr<riscv_mulhsu, MULHSU>;
+} // Predicates = [HasStdExtMOrZmmul]
+
+let Predicates = [HasStdExtM] in {
def : PatGprGpr<sdiv, DIV>;
def : PatGprGpr<udiv, DIVU>;
def : PatGprGpr<srem, REM>;
def : PatGprGpr<urem, REMU>;
} // Predicates = [HasStdExtM]
-let Predicates = [HasStdExtM, IsRV64] in {
// Select W instructions if only the lower 32-bits of the result are used.
+let Predicates = [HasStdExtMOrZmmul, IsRV64] in
def : PatGprGpr<binop_allwusers<mul>, MULW>;
+let Predicates = [HasStdExtM, IsRV64] in {
def : PatGprGpr<riscv_divw, DIVW>;
def : PatGprGpr<riscv_divuw, DIVUW>;
def : PatGprGpr<riscv_remuw, REMUW>;
@@ -96,11 +106,11 @@ def : Pat<(srem (sexti32 (i64 GPR:$rs1)), (sexti32 (i64 GPR:$rs2))),
(REMW GPR:$rs1, GPR:$rs2)>;
} // Predicates = [HasStdExtM, IsRV64]
-let Predicates = [HasStdExtM, IsRV64, NotHasStdExtZba] in {
+let Predicates = [HasStdExtMOrZmmul, IsRV64, NotHasStdExtZba] in {
// Special case for calculating the full 64-bit product of a 32x32 unsigned
// multiply where the inputs aren't known to be zero extended. We can shift the
// inputs left by 32 and use a MULHU. This saves two SRLIs needed to finish
// zeroing the upper 32 bits.
def : Pat<(i64 (mul (and GPR:$rs1, 0xffffffff), (and GPR:$rs2, 0xffffffff))),
(MULHU (SLLI GPR:$rs1, 32), (SLLI GPR:$rs2, 32))>;
-} // Predicates = [HasStdExtM, IsRV64, NotHasStdExtZba]
+} // Predicates = [HasStdExtMOrZmmul, IsRV64, NotHasStdExtZba]
diff --git a/llvm/lib/Target/RISCV/RISCVSubtarget.h b/llvm/lib/Target/RISCV/RISCVSubtarget.h
index 831f7fadaa621..6eb949fa551c5 100644
--- a/llvm/lib/Target/RISCV/RISCVSubtarget.h
+++ b/llvm/lib/Target/RISCV/RISCVSubtarget.h
@@ -89,6 +89,7 @@ class RISCVSubtarget : public RISCVGenSubtargetInfo {
bool HasStdExtZicbom = false;
bool HasStdExtZicboz = false;
bool HasStdExtZicbop = false;
+ bool HasStdExtZmmul = false;
bool HasRV64 = false;
bool IsRV32E = false;
bool EnableLinkerRelax = false;
@@ -184,6 +185,7 @@ class RISCVSubtarget : public RISCVGenSubtargetInfo {
bool hasStdExtZicbom() const { return HasStdExtZicbom; }
bool hasStdExtZicboz() const { return HasStdExtZicboz; }
bool hasStdExtZicbop() const { return HasStdExtZicbop; }
+ bool hasStdExtZmmul() const { return HasStdExtZmmul; }
bool is64Bit() const { return HasRV64; }
bool isRV32E() const { return IsRV32E; }
bool enableLinkerRelax() const { return EnableLinkerRelax; }
diff --git a/llvm/test/CodeGen/RISCV/attributes.ll b/llvm/test/CodeGen/RISCV/attributes.ll
index 89775442cf7d9..ba28e7d60b13c 100644
--- a/llvm/test/CodeGen/RISCV/attributes.ll
+++ b/llvm/test/CodeGen/RISCV/attributes.ll
@@ -1,6 +1,8 @@
;; Generate ELF attributes from llc.
; RUN: llc -mtriple=riscv32 -mattr=+m %s -o - | FileCheck --check-prefix=RV32M %s
+; RUN: llc -mtriple=riscv32 -mattr=+zmmul %s -o - | FileCheck --check-prefix=RV32ZMMUL %s
+; RUN: llc -mtriple=riscv32 -mattr=+m,+zmmul %s -o - | FileCheck --check-prefix=RV32MZMMUL %s
; RUN: llc -mtriple=riscv32 -mattr=+a %s -o - | FileCheck --check-prefix=RV32A %s
; RUN: llc -mtriple=riscv32 -mattr=+f %s -o - | FileCheck --check-prefix=RV32F %s
; RUN: llc -mtriple=riscv32 -mattr=+d %s -o - | FileCheck --check-prefix=RV32D %s
@@ -40,6 +42,8 @@
; RUN: llc -mtriple=riscv32 -mattr=+zicboz %s -o - | FileCheck --check-prefix=RV32ZICBOZ %s
; RUN: llc -mtriple=riscv32 -mattr=+zicbop %s -o - | FileCheck --check-prefix=RV32ZICBOP %s
; RUN: llc -mtriple=riscv64 -mattr=+m %s -o - | FileCheck --check-prefix=RV64M %s
+; RUN: llc -mtriple=riscv64 -mattr=+zmmul %s -o - | FileCheck --check-prefix=RV64ZMMUL %s
+; RUN: llc -mtriple=riscv64 -mattr=+m,+zmmul %s -o - | FileCheck --check-prefix=RV64MZMMUL %s
; RUN: llc -mtriple=riscv64 -mattr=+a %s -o - | FileCheck --check-prefix=RV64A %s
; RUN: llc -mtriple=riscv64 -mattr=+f %s -o - | FileCheck --check-prefix=RV64F %s
; RUN: llc -mtriple=riscv64 -mattr=+d %s -o - | FileCheck --check-prefix=RV64D %s
@@ -80,6 +84,8 @@
; RUN: llc -mtriple=riscv64 -mattr=+zicbop %s -o - | FileCheck --check-prefix=RV64ZICBOP %s
; RV32M: .attribute 5, "rv32i2p0_m2p0"
+; RV32ZMMUL: .attribute 5, "rv32i2p0_zmmul1p0"
+; RV32MZMMUL: .attribute 5, "rv32i2p0_m2p0_zmmul1p0"
; RV32A: .attribute 5, "rv32i2p0_a2p0"
; RV32F: .attribute 5, "rv32i2p0_f2p0"
; RV32D: .attribute 5, "rv32i2p0_f2p0_d2p0"
@@ -120,6 +126,8 @@
; RV32ZICBOP: .attribute 5, "rv32i2p0_zicbop1p0"
; RV64M: .attribute 5, "rv64i2p0_m2p0"
+; RV64ZMMUL: .attribute 5, "rv64i2p0_zmmul1p0"
+; RV64MZMMUL: .attribute 5, "rv64i2p0_m2p0_zmmul1p0"
; RV64A: .attribute 5, "rv64i2p0_a2p0"
; RV64F: .attribute 5, "rv64i2p0_f2p0"
; RV64D: .attribute 5, "rv64i2p0_f2p0_d2p0"
diff --git a/llvm/test/CodeGen/RISCV/zmmul.ll b/llvm/test/CodeGen/RISCV/zmmul.ll
new file mode 100644
index 0000000000000..313b16adc98c2
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/zmmul.ll
@@ -0,0 +1,41 @@
+; RUN: llc -mtriple=riscv32 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-DIV %s
+; RUN: llc -mtriple=riscv64 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-DIV %s
+; RUN: llc -mtriple=riscv32 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-REM %s
+; RUN: llc -mtriple=riscv64 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-REM %s
+
+; RUN: llc -mtriple=riscv32 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-UDIV %s
+; RUN: llc -mtriple=riscv64 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-UDIV %s
+; RUN: llc -mtriple=riscv32 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-UREM %s
+; RUN: llc -mtriple=riscv64 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | not FileCheck -check-prefix=CHECK-UREM %s
+
+; RUN: llc -mtriple=riscv32 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | FileCheck -check-prefix=CHECK-MUL %s
+; RUN: llc -mtriple=riscv64 -mattr=+zmmul -verify-machineinstrs < %s \
+; RUN: | FileCheck -check-prefix=CHECK-MUL %s
+
+; RUN: llc -mtriple=riscv32 -mattr=+m -verify-machineinstrs < %s \
+; RUN: | FileCheck -check-prefixes=CHECK-MUL,CHECK-UDIV,CHECK-DIV,CHECK-UREM,CHECK-REM %s
+; RUN: llc -mtriple=riscv64 -mattr=+m -verify-machineinstrs < %s \
+; RUN: | FileCheck -check-prefixes=CHECK-MUL,CHECK-UDIV,CHECK-DIV,CHECK-UREM,CHECK-REM %s
+
+define i32 @foo(i32 %a, i32 %b) {
+; CHECK-UDIV: divu{{w?}} {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}
+ %1 = udiv i32 %a, %b
+; CHECK-DIV: div{{w?}} {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}
+ %2 = sdiv i32 %a, %1
+; CHECK-MUL: mul{{w?}} {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}
+ %3 = mul i32 %b, %2
+; CHECK-UREM: remu{{w?}} {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}
+ %4 = urem i32 %3, %b
+; CHECK-REM: rem{{w?}} {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}, {{[as]}}{{[0-9]}}
+ %5 = srem i32 %4, %a
+ ret i32 %5
+}
diff --git a/llvm/test/MC/RISCV/rv32i-invalid.s b/llvm/test/MC/RISCV/rv32i-invalid.s
index 4c2be6a84b41b..bdf4754fadf88 100644
--- a/llvm/test/MC/RISCV/rv32i-invalid.s
+++ b/llvm/test/MC/RISCV/rv32i-invalid.s
@@ -169,7 +169,7 @@ ori a0, a1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction
xor s2, s2 # CHECK: :[[@LINE]]:1: error: too few operands for instruction
# Instruction not in the base ISA
-mul a4, ra, s0 # CHECK: :[[@LINE]]:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+div a4, ra, s0 # CHECK: :[[@LINE]]:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
amomaxu.w s5, s4, (s3) # CHECK: :[[@LINE]]:1: error: instruction requires the following: 'A' (Atomic Instructions)
fadd.s ft0, ft1, ft2 # CHECK: :[[@LINE]]:1: error: instruction requires the following: 'F' (Single-Precision Floating-Point){{$}}
fadd.h ft0, ft1, ft2 # CHECK: :[[@LINE]]:1: error: instruction requires the following: 'Zfh' (Half-Precision Floating-Point)
diff --git a/llvm/test/MC/RISCV/rv32zmmul-invaild.s b/llvm/test/MC/RISCV/rv32zmmul-invaild.s
new file mode 100644
index 0000000000000..3533b49e72d63
--- /dev/null
+++ b/llvm/test/MC/RISCV/rv32zmmul-invaild.s
@@ -0,0 +1,14 @@
+# RUN: not llvm-mc %s -triple=riscv32 -mattr=+zmmul -riscv-no-aliases 2>&1 \
+# RUN: | FileCheck -check-prefixes=CHECK-ERROR %s
+
+# CHECK-ERROR: 5:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+div s0, s0, s0
+
+# CHECK-ERROR: 8:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+divu gp, a0, a1
+
+# CHECK-ERROR: 11:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+rem s2, s2, s8
+
+# CHECK-ERROR: 14:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+remu x18, x18, x24
diff --git a/llvm/test/MC/RISCV/rv32zmmul-valid.s b/llvm/test/MC/RISCV/rv32zmmul-valid.s
new file mode 100644
index 0000000000000..929dc52e1f5ea
--- /dev/null
+++ b/llvm/test/MC/RISCV/rv32zmmul-valid.s
@@ -0,0 +1,14 @@
+# RUN: llvm-mc %s -triple=riscv32 -mattr=+zmmul -riscv-no-aliases 2>&1 \
+# RUN: | FileCheck -check-prefixes=CHECK-INST %s
+
+# CHECK-INST: mul a4, ra, s0
+mul a4, ra, s0
+
+# CHECK-INST: mulh ra, zero, zero
+mulh x1, x0, x0
+
+# CHECK-INST: mulhsu t0, t2, t1
+mulhsu t0, t2, t1
+
+# CHECK-INST: mulhu a5, a4, a3
+mulhu a5, a4, a3
diff --git a/llvm/test/MC/RISCV/rv64zmmul-invalid.s b/llvm/test/MC/RISCV/rv64zmmul-invalid.s
new file mode 100644
index 0000000000000..707c2d5954ad2
--- /dev/null
+++ b/llvm/test/MC/RISCV/rv64zmmul-invalid.s
@@ -0,0 +1,14 @@
+# RUN: not llvm-mc %s -triple=riscv64 -mattr=+zmmul -riscv-no-aliases 2>&1 \
+# RUN: | FileCheck -check-prefixes=CHECK-ERROR %s
+
+# CHECK-ERROR: 5:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+divw tp, t0, t1
+
+# CHECK-ERROR: 8:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+divuw t2, s0, s2
+
+# CHECK-ERROR: 11:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+remw a0, a1, a2
+
+# CHECK-ERROR: 14:1: error: instruction requires the following: 'M' (Integer Multiplication and Division)
+remuw a3, a4, a5
diff --git a/llvm/test/MC/RISCV/rv64zmmul-valid.s b/llvm/test/MC/RISCV/rv64zmmul-valid.s
new file mode 100644
index 0000000000000..80d05ac2bff08
--- /dev/null
+++ b/llvm/test/MC/RISCV/rv64zmmul-valid.s
@@ -0,0 +1,5 @@
+# RUN: llvm-mc %s -triple=riscv64 -mattr=+zmmul -riscv-no-aliases 2>&1 \
+# RUN: | FileCheck -check-prefixes=CHECK-INST %s
+
+# CHECK-INST: mulw ra, sp, gp
+mulw ra, sp, gp
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