Add pass to support VX/VF instruction generation

Summary: Add pass to support VX/VF instruction generation

Test Plan: none

Reviewers: hualin

Reviewed By: hualin

Subscribers: yanming

Differential Revision: http://www.tpt.com/D583

.arcconfig

@@ -1,8 +1,4 @@
 {
-  "phabricator.uri" : "https://reviews.llvm.org/",
-  "repository.callsign" : "G",
-  "conduit_uri" : "https://reviews.llvm.org/",
-  "base": "git:HEAD^",
-  "arc.land.onto.default": "main",
-  "arc.land.onto": ["main"]
-}
+  "phabricator.uri" : "http://www.tpt.com",
+  "notification" : "The code review's uri is Terapines' private network uri"
+}

llvm/lib/Target/RISCV/CMakeLists.txt

@@ -40,6 +40,7 @@ add_llvm_target(RISCVCodeGen
   RISCVTargetObjectFile.cpp
   RISCVTargetTransformInfo.cpp
   VentusRegextInsertion.cpp
+  VentusVVInstrConversion.cpp
   GISel/RISCVCallLowering.cpp
   GISel/RISCVInstructionSelector.cpp
   GISel/RISCVLegalizerInfo.cpp

llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h

@@ -95,6 +95,10 @@ enum {
   // compiler has free to select either one.
   UsesMaskPolicyShift = IsRVVWideningReductionShift + 1,
   UsesMaskPolicyMask = 1 << UsesMaskPolicyShift,
+
+  // Check if this instruction meets the format of RVInstVV
+  IsVVALUInstrShift = UsesMaskPolicyShift + 1,
+  IsVVALUInstrMask = 1 << IsVVALUInstrShift,
 };
 
 // Match with the definitions in RISCVInstrFormats.td
@@ -132,6 +136,12 @@ static inline VConstraintType getConstraint(uint64_t TSFlags) {
 static inline bool hasDummyMaskOp(uint64_t TSFlags) {
   return TSFlags & HasDummyMaskOpMask;
 }
+
+/// \returns true if the instruction meets the format of RVInstVV
+static inline bool isVVALUInstr(uint64_t TSFlags) {
+  return TSFlags & IsVVALUInstrMask;
+}
+
 /// \returns true if tail agnostic is enforced for the instruction.
 static inline bool doesForceTailAgnostic(uint64_t TSFlags) {
   return TSFlags & ForceTailAgnosticMask;

llvm/lib/Target/RISCV/RISCV.h

@@ -69,6 +69,9 @@ void initializeRISCVRedundantCopyEliminationPass(PassRegistry &);
 FunctionPass *createVentusRegextInsertionPass();
 void initializeVentusRegextInsertionPass(PassRegistry &);
 
+FunctionPass *createVentusVVInstrConversionPass();
+void initializeVentusVVInstrConversionPass(PassRegistry &);
+
 InstructionSelector *createRISCVInstructionSelector(const RISCVTargetMachine &,
                                                     RISCVSubtarget &,
                                                     RISCVRegisterBankInfo &);

llvm/lib/Target/RISCV/RISCVInstrFormats.td

@@ -205,6 +205,9 @@ class RVInst<dag outs, dag ins, string opcodestr, string argstr,
 
   bit UsesMaskPolicy = 0;
   let TSFlags{18} = UsesMaskPolicy;
+
+  bit IsVVALUInstr = 0;
+  let TSFlags{19} = IsVVALUInstr;
 }
 
 // Pseudo instructions

llvm/lib/Target/RISCV/RISCVTargetMachine.cpp

@@ -290,6 +290,7 @@ void RISCVPassConfig::addPreRegAlloc() {
   addPass(createRISCVPreRAExpandPseudoPass());
   if (TM->getOptLevel() != CodeGenOpt::None)
     addPass(createRISCVMergeBaseOffsetOptPass());
+  addPass(createVentusVVInstrConversionPass());
 }
 
 void RISCVPassConfig::addPostRegAlloc() {

llvm/lib/Target/RISCV/VentusInstrFormatsV.td

@@ -77,6 +77,7 @@ class RVInstVV<bits<6> funct6, RISCVVFormat opv, dag outs, dag ins,
   let Inst{14-12} = opv.Value;
   let Inst{11-7} = vd;
   let Opcode = OPC_OP_V.Value;
+  let IsVVALUInstr = 1;
 }
 
 // vALU branch

llvm/lib/Target/RISCV/VentusVVInstrConversion.cpp

@@ -0,0 +1,263 @@
+//===-- VentusVVInstrConversion.cpp - VV instruction conversion -----------===//
+//
+// 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 a pass that convert vop.vv instructions to vop.vx/vf
+// instructions because currently, the objects stored in sGPR and sGPRF32 will
+// be moved to VGPR in divergent nodes, so the patterns which match VX/VF
+// instructions will not be matched
+//
+//===----------------------------------------------------------------------===//
+
+#include "MCTargetDesc/RISCVBaseInfo.h"
+#include "MCTargetDesc/RISCVMCTargetDesc.h"
+#include "RISCV.h"
+#include "RISCVInstrInfo.h"
+#include "RISCVRegisterInfo.h"
+#include "RISCVTargetMachine.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/CodeGen/ISDOpcodes.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineOperand.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/Register.h"
+#include "llvm/CodeGen/TargetRegisterInfo.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Error.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/Transforms/Utils/BasicBlockUtils.h"
+
+#define VENTUS_VV_INSTRUCTION_CONVRSION "Ventus VV instruction conversion pass"
+#define DEBUG_TYPE "Ventus VV instruction conversion"
+
+using namespace llvm;
+
+namespace {
+
+/// This map is a reflection of VV instruction to VX/VF instruction
+/// currently, we use enum to represent all the reflections
+DenseMap<unsigned, unsigned> VV2VXOpcodeMap = {
+    {RISCV::VADD_VV    ,    RISCV::VADD_VX},
+    {RISCV::VSUB_VV    ,    RISCV::VSUB_VX},
+    {RISCV::VMINU_VV   ,    RISCV::VMINU_VX},
+    {RISCV::VMIN_VV    ,    RISCV::VMINU_VX},
+    {RISCV::VMAX_VV    ,    RISCV::VMAX_VX},
+    {RISCV::VMAXU_VV   ,    RISCV::VMAXU_VX},
+    {RISCV::VAND_VV    ,    RISCV::VAND_VX},
+    {RISCV::VOR_VV     ,    RISCV::VOR_VX},
+    {RISCV::VXOR_VV    ,    RISCV::VXOR_VX},
+    {RISCV::VMSEQ_VV   ,    RISCV::VMSEQ_VX},
+    {RISCV::VMSNE_VV   ,    RISCV::VMSNE_VX},
+    {RISCV::VMSLTU_VV  ,    RISCV::VMSLTU_VX},
+    {RISCV::VMSLT_VV   ,    RISCV::VMSLT_VX},
+    {RISCV::VMSLEU_VV  ,    RISCV::VMSLEU_VX},
+    {RISCV::VMSLE_VV   ,    RISCV::VMSLE_VX},
+    {RISCV::VSLL_VV    ,    RISCV::VSLL_VX},
+    {RISCV::VSRL_VV    ,    RISCV::VSRL_VX},
+    {RISCV::VSRA_VV    ,    RISCV::VSRA_VX},
+    {RISCV::VSSRL_VV   ,    RISCV::VSSRL_VX},
+    {RISCV::VSSRA_VV   ,    RISCV::VSSRA_VX},
+    {RISCV::VDIVU_VV   ,    RISCV::VDIVU_VX},
+    {RISCV::VDIV_VV    ,    RISCV::VDIV_VX},
+    {RISCV::VREMU_VV   ,    RISCV::VREMU_VX},
+    {RISCV::VFSUB_VV   ,    RISCV::VFSUB_VF},
+    {RISCV::VREM_VV    ,    RISCV::VREM_VX},
+    {RISCV::VMULHU_VV  ,    RISCV::VMULHU_VX},
+    {RISCV::VMUL_VV    ,    RISCV::VMUL_VX},
+    {RISCV::VMULHSU_VV ,    RISCV::VMULHSU_VX},
+    {RISCV::VMULH_VV   ,    RISCV::VMULH_VX},
+    {RISCV::VMADD_VV   ,    RISCV::VMADD_VX},
+    {RISCV::VNMSUB_VV  ,    RISCV::VNMSUB_VX},
+    {RISCV::VMACC_VV   ,    RISCV::VMACC_VX},
+    {RISCV::VNMSAC_VV  ,    RISCV::VNMSAC_VX},
+    {RISCV::VFADD_VV   ,    RISCV::VFADD_VF},
+    {RISCV::VFMSUB_VV  ,    RISCV::VFMSUB_VF},
+    {RISCV::VFMIN_VV   ,    RISCV::VFMIN_VF},
+    {RISCV::VFMAX_VV   ,    RISCV::VFMAX_VF},
+    {RISCV::VFSGNJ_VV  ,    RISCV::VFSGNJ_VF},
+    {RISCV::VFSGNJN_VV ,    RISCV::VFSGNJN_VF},
+    {RISCV::VFSGNJX_VV ,    RISCV::VFSGNJX_VF},
+    {RISCV::VMFEQ_VV   ,    RISCV::VMFEQ_VF},
+    {RISCV::VMFLE_VV   ,    RISCV::VMFLE_VF},
+    {RISCV::VMFLT_VV   ,    RISCV::VMFLT_VF},
+    {RISCV::VMFNE_VV   ,    RISCV::VMFNE_VF},
+    {RISCV::VFDIV_VV   ,    RISCV::VFDIV_VF},
+    {RISCV::VFMUL_VV   ,    RISCV::VFMUL_VF},
+    {RISCV::VFMADD_VV  ,    RISCV::VFMADD_VF},
+    {RISCV::VFNMADD_VV ,    RISCV::VFNMADD_VF},
+    {RISCV::VFMACC_VV  ,    RISCV::VFMACC_VF},
+    {RISCV::VFNMACC_VV ,    RISCV::VFNMACC_VF},
+    {RISCV::VFNMSUB_VV ,    RISCV::VFNMSUB_VF},
+    {RISCV::VFMSAC_VV  ,    RISCV::VFMSAC_VF},
+    {RISCV::VFNMSAC_VV ,    RISCV::VFNMSAC_VF}};
+
+class VentusVVInstrConversion : public MachineFunctionPass {
+public:
+  const RISCVInstrInfo *TII;
+  static char ID;
+  const RISCVRegisterInfo *MRI;
+  const MachineRegisterInfo *MR;
+
+  VentusVVInstrConversion() : MachineFunctionPass(ID) {
+    initializeVentusVVInstrConversionPass(*PassRegistry::getPassRegistry());
+  }
+
+  bool runOnMachineFunction(MachineFunction &MF) override;
+
+  StringRef getPassName() const override {
+    return VENTUS_VV_INSTRUCTION_CONVRSION;
+  }
+
+private:
+  bool runOnMachineBasicBlock(MachineBasicBlock &MBB);
+
+  /// Check if the instruction is VV ALU instruction or not
+  bool isVVALUInstruction(MachineInstr &MI) {
+    return RISCVII::isVVALUInstr(MI.getDesc().TSFlags);
+  };
+
+  bool isVALUCommutableInstr(MachineInstr &MI);
+
+  bool convertInstr(MachineBasicBlock &MBB, MachineInstr &CopyMI,
+                    MachineInstr &VVMI);
+
+  bool swapRegOperands(MachineInstr &MI);
+
+  bool isGPR2VGPRCopy(MachineInstr &MI);
+};
+
+char VentusVVInstrConversion::ID = 0;
+
+/// Swap register operands of instruction such as
+/// vadd.vv v0, v2, v1
+/// into
+/// vadd.vv v0, v1, v2
+bool VentusVVInstrConversion::swapRegOperands(MachineInstr &MI) {
+  MachineOperand &MO1 = MI.getOperand(1);
+  MachineOperand &MO2 = MI.getOperand(2);
+  assert((MO1.isReg() && MO2.isReg()) && "Operand is not register");
+  Register Reg1 = MO1.getReg();
+  Register Reg2 = MO2.getReg();
+  MO1.setReg(Reg2);
+  MO2.setReg(Reg1);
+  return true;
+}
+
+bool VentusVVInstrConversion::runOnMachineFunction(MachineFunction &MF) {
+  bool isChanged = false;
+  TII = static_cast<const RISCVInstrInfo *>(MF.getSubtarget().getInstrInfo());
+  MRI = MF.getSubtarget<RISCVSubtarget>().getRegisterInfo();
+  MR = &MF.getRegInfo();
+  for (auto &MBB : MF)
+    isChanged |= runOnMachineBasicBlock(MBB);
+  return isChanged;
+}
+
+bool VentusVVInstrConversion::runOnMachineBasicBlock(MachineBasicBlock &MBB) {
+  bool isMBBChanged = false;
+  for (auto &MI : MBB) {
+    MachineInstr *NextMI = MI.getNextNode();
+    // Check RISCV::COPY instructions' format and its next instruction's format
+    if (isGPR2VGPRCopy(MI) && NextMI && isVVALUInstruction(*NextMI)) {
+      // When met here, we can ensure the coding logic goes to the conversion
+      isMBBChanged |= convertInstr(MBB, MI, *NextMI);
+    }
+  }
+  return isMBBChanged;
+}
+
+/// This function tries to convert
+///     vmv.s.x v2, a0
+///     vadd.vv v0, v0, v2
+/// into
+///     vadd.vx v0, v0, a0
+/// *****************************************************
+///     vmv.s.x v2, a0
+///     vmadd.vv v0, v2, v1
+/// into
+///     vmadd.vx v0, a0, v1
+/// VV to VF conversion follows the same routine
+/// TODO: vrsub has VX and VI version, need to deal with this specifically?
+bool VentusVVInstrConversion::convertInstr(MachineBasicBlock &MBB,
+                                           MachineInstr &CopyMI,
+                                           MachineInstr &VVMI) {
+  bool isMBBChanged = false;
+  if (isVALUCommutableInstr(VVMI) &&
+      CopyMI.getOperand(0).getReg() != VVMI.getOperand(2).getReg())
+    isMBBChanged |= swapRegOperands(VVMI);
+  // Other incommutable instructions check
+  if (CopyMI.getOperand(0).getReg() != VVMI.getOperand(2).getReg())
+    return isMBBChanged;
+
+  unsigned NewOpcode = VV2VXOpcodeMap[VVMI.getOpcode()];
+  assert(NewOpcode && "No VV instruction reflection to VX/VF "
+                      "instruction, please check the mapping");
+  Register Dst = VVMI.getOperand(0).getReg();
+  DebugLoc DL = VVMI.getDebugLoc();
+  if (VVMI.getNumExplicitOperands() == 3) {
+    BuildMI(MBB, VVMI, DL, TII->get(NewOpcode), Dst)
+        .addReg(VVMI.getOperand(1).getReg())
+        .addReg(CopyMI.getOperand(1).getReg());
+    VVMI.eraseFromParent();
+  }
+  // Three-operands VV ALU instruction conversion
+  else if (VVMI.getNumExplicitOperands() == 4 &&
+           CopyMI.getOperand(0).getReg() != VVMI.getOperand(3).getReg()) {
+    BuildMI(MBB, VVMI, DL, TII->get(NewOpcode), VVMI.getOperand(0).getReg())
+        .addReg(VVMI.getOperand(1).getReg())
+        .addReg(CopyMI.getOperand(1).getReg())
+        .addReg(VVMI.getOperand(3).getReg());
+    VVMI.eraseFromParent();
+  }
+  // FIXME: maybe we need to take other unsupported instructions into
+  // consideration, so we add an else statement here and return false directly
+  else
+    return isMBBChanged;
+  return true;
+}
+
+/// FIXME: we also can add attribute in VentusInstrInfoV.td file, but changes
+/// are very trivial which can happen in many separated places, for now we use
+/// enum to accomplish our purpose
+/// In ventus : V+X = X+V, V*X=X*V
+bool VentusVVInstrConversion::isVALUCommutableInstr(MachineInstr &MI) {
+  switch (MI.getOpcode()) {
+  default:
+    return false;
+  case RISCV::VADD_VV:
+  case RISCV::VMUL_VV:
+  case RISCV::VFADD_VV:
+  case RISCV::VFMUL_VV:
+  case RISCV::VMADD_VV:
+  case RISCV::VFMADD_VV:
+  case RISCV::VMULH_VV:
+  case RISCV::VMULHSU_VV:
+  case RISCV::VMULHU_VV:
+    return true;
+  };
+}
+
+/// Instruction shall be like this: %1:vgpr = COPY %2:gpr
+bool VentusVVInstrConversion::isGPR2VGPRCopy(MachineInstr &MI) {
+  return MI.getOpcode() == RISCV::COPY &&
+         MRI->isSGPRReg(*MR, MI.getOperand(1).getReg()) &&
+         !MRI->isSGPRReg(*MR, MI.getOperand(0).getReg());
+}
+} // end of anonymous namespace
+
+INITIALIZE_PASS(VentusVVInstrConversion, "ventus-VV-instructions-conversion",
+                VENTUS_VV_INSTRUCTION_CONVRSION, false, false)
+
+namespace llvm {
+FunctionPass *createVentusVVInstrConversionPass() {
+  return new VentusVVInstrConversion();
+}
+} // end of namespace llvm

llvm/test/CodeGen/RISCV/VentusGPGPU/addr-space.ll

@@ -25,13 +25,11 @@ define dso_local spir_kernel void @func(ptr addrspace(1) nocapture noundef align
 ; VENTUS-NEXT:    call _Z12get_local_idj
 ; VENTUS-NEXT:    vmv.s.x v1, zero
 ; VENTUS-NEXT:    vsll.vi v0, v0, 2
-; VENTUS-NEXT:    vmv.s.x v2, s1
-; VENTUS-NEXT:    vadd.vv v0, v2, v0
+; VENTUS-NEXT:    vadd.vx v0, v0, s1
 ; VENTUS-NEXT:    vmv.x.s a0, v0
 ; VENTUS-NEXT:    vluxei32.v v0, (a0), v1
 ; VENTUS-NEXT:    vsll.vi v2, v32, 2
-; VENTUS-NEXT:    vmv.s.x v3, s0
-; VENTUS-NEXT:    vadd.vv v2, v3, v2
+; VENTUS-NEXT:    vadd.vx v2, v2, s0
 ; VENTUS-NEXT:    vmv.x.s a0, v2
 ; VENTUS-NEXT:    vluxei32.v v2, (a0), v1
 ; VENTUS-NEXT:    vadd.vv v0, v2, v0

llvm/test/CodeGen/RISCV/VentusGPGPU/addr-space2.ll

@@ -40,16 +40,16 @@ define spir_kernel void @foo(ptr addrspace(1) noundef align 4 %out) {
 ; VENTUS-NEXT:    vlw v1, zero(s2)
 ; VENTUS-NEXT:    add s1, s1, a0
 ; VENTUS-NEXT:    lw a1, 0(s1)
-; VENTUS-NEXT:    add a0, s0, a0
+; VENTUS-NEXT:    add a0, a0, s0
 ; VENTUS-NEXT:    lw a2, 0(a0)
 ; VENTUS-NEXT:    vmv.s.x v2, a1
 ; VENTUS-NEXT:    vmv.s.x v3, a2
-; VENTUS-NEXT:    vmadd.vv v2, v1, v3
-; VENTUS-NEXT:    vsuxei32.v v2, (a0), v0
+; VENTUS-NEXT:    vmadd.vv v1, v2, v3
+; VENTUS-NEXT:    vsuxei32.v v1, (a0), v0
 ; VENTUS-NEXT:    j .LBB0_3
 ; VENTUS-NEXT:  .LBB0_2: # %if.else
 ; VENTUS-NEXT:    slli a0, a0, 2
-; VENTUS-NEXT:    add a0, s0, a0
+; VENTUS-NEXT:    add a0, a0, s0
 ; VENTUS-NEXT:    sw zero, 0(a0)
 ; VENTUS-NEXT:  .LBB0_3: # %if.end
 ; VENTUS-NEXT:    lw ra, -36(sp) # 4-byte Folded Reload

llvm/test/CodeGen/RISCV/VentusGPGPU/builtin.ll

@@ -20,12 +20,10 @@ define spir_kernel void @foo_ker(ptr addrspace(1) nocapture noundef align 4 %A,
 ; VENTUS-NEXT:    call _Z13get_global_idj
 ; VENTUS-NEXT:    vmv.s.x v1, zero
 ; VENTUS-NEXT:    vsll.vi v0, v0, 2
-; VENTUS-NEXT:    vmv.s.x v2, s1
-; VENTUS-NEXT:    vadd.vv v2, v2, v0
+; VENTUS-NEXT:    vadd.vx v2, v0, s1
 ; VENTUS-NEXT:    vmv.x.s a0, v2
 ; VENTUS-NEXT:    vluxei32.v v2, (a0), v1
-; VENTUS-NEXT:    vmv.s.x v3, s0
-; VENTUS-NEXT:    vadd.vv v0, v3, v0
+; VENTUS-NEXT:    vadd.vx v0, v0, s0
 ; VENTUS-NEXT:    vmv.x.s a0, v0
 ; VENTUS-NEXT:    vluxei32.v v0, (a0), v1
 ; VENTUS-NEXT:    vadd.vv v0, v0, v2

llvm/test/CodeGen/RISCV/VentusGPGPU/float.ll

@@ -17,8 +17,7 @@ define float @fadd_f(float noundef %a) {
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfadd.vv v0, v0, v1
+; VENTUS-NEXT:    vfadd.vf v0, v0, a0
 ; VENTUS-NEXT:    ret
 entry:
   %val = load float, ptr @global_val, align 4
@@ -41,8 +40,7 @@ define float @fsub_f(float noundef %a) {
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfsub.vv v0, v0, v1
+; VENTUS-NEXT:    vfsub.vf v0, v0, a0
 ; VENTUS-NEXT:    ret
 entry:
   %val = load float, ptr @global_val, align 4
@@ -65,8 +63,7 @@ define float @fmul_f(float noundef %a) {
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfmul.vv v0, v0, v1
+; VENTUS-NEXT:    vfmul.vf v0, v0, a0
 ; VENTUS-NEXT:    ret
 entry:
   %val = load float, ptr @global_val, align 4
@@ -89,8 +86,7 @@ define float @fdiv_f(float noundef %a, float noundef %b) {
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfdiv.vv v0, v0, v1
+; VENTUS-NEXT:    vfdiv.vf v0, v0, a0
 ; VENTUS-NEXT:    ret
 entry:
   %val = load float, ptr @global_val, align 4
@@ -103,8 +99,7 @@ define float @foo_constant(float noundef %a) {
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(.LCPI8_0)
 ; VENTUS-NEXT:    lw a0, %lo(.LCPI8_0)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfmul.vv v0, v0, v1
+; VENTUS-NEXT:    vfmul.vf v0, v0, a0
 ; VENTUS-NEXT:    ret
 entry:
   %mul = fmul float %a, 1.25
@@ -391,8 +386,7 @@ define dso_local float @fmadd_f(float noundef %a, float noundef %b, float nounde
 ; VENTUS-NEXT:    lui a0, %hi(.LCPI24_0)
 ; VENTUS-NEXT:    lw a0, %lo(.LCPI24_0)(a0)
 ; VENTUS-NEXT:    vadd.vx v0, v1, zero
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfmadd.vv v0, v1, v2
+; VENTUS-NEXT:    vfmadd.vf v0, a0, v2
 ; VENTUS-NEXT:    ret
 entry:
   %0 = tail call float @llvm.fmuladd.f32(float %b, float 0x3FF3333340000000, float %c)
@@ -419,8 +413,7 @@ define dso_local float @fnmadd_f(float noundef %a, float noundef %b, float nound
 ; VENTUS-NEXT:    lui a0, %hi(.LCPI26_0)
 ; VENTUS-NEXT:    lw a0, %lo(.LCPI26_0)(a0)
 ; VENTUS-NEXT:    vadd.vx v0, v1, zero
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfmsub.vv v0, v1, v2
+; VENTUS-NEXT:    vfmsub.vf v0, a0, v2
 ; VENTUS-NEXT:    ret
 entry:
   %fneg = fmul float %b, 0xBFF3333340000000
@@ -446,8 +439,7 @@ define dso_local float @fmsub_f(float noundef %a, float noundef %b) local_unname
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(.LCPI28_0)
 ; VENTUS-NEXT:    lw a0, %lo(.LCPI28_0)(a0)
-; VENTUS-NEXT:    vmv.s.x v2, a0
-; VENTUS-NEXT:    vfmsub.vv v0, v2, v1
+; VENTUS-NEXT:    vfmsub.vf v0, a0, v1
 ; VENTUS-NEXT:    ret
 entry:
   %mul = fmul float %a, 0x3FF3333340000000
@@ -474,8 +466,7 @@ define dso_local float @fnmsub_f(float noundef %a, float noundef %b, float nound
 ; VENTUS-NEXT:    lui a0, %hi(.LCPI30_0)
 ; VENTUS-NEXT:    lw a0, %lo(.LCPI30_0)(a0)
 ; VENTUS-NEXT:    vadd.vx v0, v1, zero
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vfmadd.vv v0, v1, v2
+; VENTUS-NEXT:    vfmadd.vf v0, a0, v2
 ; VENTUS-NEXT:    ret
 entry:
   %fneg = fmul float %b, 0x3FF3333340000000

llvm/test/CodeGen/RISCV/VentusGPGPU/int_arithmetic.ll

@@ -16,8 +16,7 @@ define i32 @vdivu_x(i32 %a) {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vdivu.vv v0, v0, v1
+; VENTUS-NEXT:    vdivu.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %udiv = udiv i32 %a, %val
@@ -38,8 +37,7 @@ define i32 @vdiv_x(i32 %a) {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vdiv.vv v0, v0, v1
+; VENTUS-NEXT:    vdiv.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %sdiv = sdiv i32 %a, %val
@@ -82,8 +80,7 @@ define i32 @srem_pow2(i32 %a) nounwind {
 ; VENTUS-NEXT:    vsrl.vi v1, v1, 29
 ; VENTUS-NEXT:    vadd.vv v1, v0, v1
 ; VENTUS-NEXT:    li a0, -8
-; VENTUS-NEXT:    vmv.s.x v2, a0
-; VENTUS-NEXT:    vand.vv v1, v1, v2
+; VENTUS-NEXT:    vand.vx v1, v1, a0
 ; VENTUS-NEXT:    vsub.vv v0, v0, v1
 ; VENTUS-NEXT:    ret
   %1 = srem i32 %a, 8
@@ -97,8 +94,7 @@ define i32 @srem_pow2_2(i32 %a) nounwind {
 ; VENTUS-NEXT:    vsrl.vi v1, v1, 16
 ; VENTUS-NEXT:    vadd.vv v1, v0, v1
 ; VENTUS-NEXT:    lui a0, 1048560
-; VENTUS-NEXT:    vmv.s.x v2, a0
-; VENTUS-NEXT:    vand.vv v1, v1, v2
+; VENTUS-NEXT:    vand.vx v1, v1, a0
 ; VENTUS-NEXT:    vsub.vv v0, v0, v1
 ; VENTUS-NEXT:    ret
   %1 = srem i32 %a, 65536
@@ -130,8 +126,7 @@ define i32 @vadd_x(i32 %a) nounwind {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vadd.vv v0, v0, v1
+; VENTUS-NEXT:    vadd.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %add = add i32 %a, %val
@@ -161,8 +156,7 @@ define i32 @vsub_x(i32 %a) nounwind {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vsub.vv v0, v0, v1
+; VENTUS-NEXT:    vsub.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %sub = sub i32 %a, %val
@@ -196,8 +190,7 @@ define i32 @vmul_x(i32 %a) nounwind {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vmul.vv v0, v0, v1
+; VENTUS-NEXT:    vmul.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %mul = mul i32 %a, %val
@@ -222,8 +215,7 @@ define i32 @vmulh_x(i32 %a) nounwind {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vmulh.vv v0, v0, v1
+; VENTUS-NEXT:    vmulh.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %1 = sext i32 %a to i64
@@ -252,8 +244,7 @@ define i32 @vmulhu_x(i32 %a) nounwind {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vmulhu.vv v0, v0, v1
+; VENTUS-NEXT:    vmulhu.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %1 = zext i32 %a to i64
@@ -281,8 +272,7 @@ define i32 @vmulhsu_x(i32 %a) nounwind {
 ; VENTUS:       # %bb.0:
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v1, a0
-; VENTUS-NEXT:    vmulhsu.vv v0, v0, v1
+; VENTUS-NEXT:    vmulhsu.vx v0, v0, a0
 ; VENTUS-NEXT:    ret
   %val = load i32, ptr @global_val
   %1 = sext i32 %a to i64
@@ -331,8 +321,7 @@ define dso_local i32 @nmsub_x(i32 noundef %a, i32 noundef %b) local_unnamed_addr
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v2, a0
-; VENTUS-NEXT:    vmadd.vv v0, v2, v1
+; VENTUS-NEXT:    vmadd.vx v0, a0, v1
 ; VENTUS-NEXT:    ret
 entry:
   %val = load i32, ptr @global_val
@@ -360,8 +349,7 @@ define dso_local i32 @madd_x(i32 noundef %a, i32 noundef %b) local_unnamed_addr
 ; VENTUS:       # %bb.0: # %entry
 ; VENTUS-NEXT:    lui a0, %hi(global_val)
 ; VENTUS-NEXT:    lw a0, %lo(global_val)(a0)
-; VENTUS-NEXT:    vmv.s.x v2, a0
-; VENTUS-NEXT:    vmadd.vv v0, v2, v1
+; VENTUS-NEXT:    vmadd.vx v0, a0, v1
 ; VENTUS-NEXT:    ret
 entry:
   %val = load i32, ptr @global_val

llvm/test/CodeGen/RISCV/VentusGPGPU/kernel_args.ll

@@ -15,7 +15,7 @@ define dso_local spir_kernel void @foo(i32 noundef %a, i32 noundef %b, ptr addrs
 ; VENTUS-NEXT:    lw a1, 0(a0)
 ; VENTUS-NEXT:    lw a2, 4(a0)
 ; VENTUS-NEXT:    lw a0, 8(a0)
-; VENTUS-NEXT:    add a1, a2, a1
+; VENTUS-NEXT:    add a1, a1, a2
 ; VENTUS-NEXT:    sw a1, 0(a0)
 ; VENTUS-NEXT:    ret
   %add = add nsw i32 %b, %a