[llvm] [RISCV][GISEL] Add support for lowerFormalArguments that contain scalable vector types (PR #70882)
Michael Maitland via llvm-commits
llvm-commits at lists.llvm.org
Wed Nov 1 13:33:57 PDT 2023
https://github.com/michaelmaitland updated https://github.com/llvm/llvm-project/pull/70882
>From a7bff2e849b883e990594867a5fc6d3cedd669b4 Mon Sep 17 00:00:00 2001
From: Michael Maitland <michaeltmaitland at gmail.com>
Date: Tue, 31 Oct 2023 18:33:47 -0700
Subject: [PATCH 1/4] [CodeGen][MachineVerifier] Use TypeSize instead of
unsigned for getRegSizeInBits
This patch changes getRegSizeInBits to return a TypeSize instead of an
unsigned in the case that a virtual register has a scalable LLT. In the
case that register is physical, a Fixed TypeSize is returned.
The MachineVerifier pass is updated to allow copies between fixed and
scalable operands as long as the Src size will fit into the Dest size.
This is a precommit which will be stacked on by a change to GISel to
generate COPYs with a scalable destination but a fixed size source.
---
.../include/llvm/CodeGen/TargetRegisterInfo.h | 6 ++---
llvm/lib/CodeGen/MachineVerifier.cpp | 22 ++++++++++++++-----
llvm/lib/CodeGen/TargetRegisterInfo.cpp | 19 ++++++++--------
3 files changed, 29 insertions(+), 18 deletions(-)
diff --git a/llvm/include/llvm/CodeGen/TargetRegisterInfo.h b/llvm/include/llvm/CodeGen/TargetRegisterInfo.h
index 5bf27e40eee8909..3f64bf972daf21e 100644
--- a/llvm/include/llvm/CodeGen/TargetRegisterInfo.h
+++ b/llvm/include/llvm/CodeGen/TargetRegisterInfo.h
@@ -278,8 +278,8 @@ class TargetRegisterInfo : public MCRegisterInfo {
// DenseMapInfo<unsigned> uses -1u and -2u.
/// Return the size in bits of a register from class RC.
- unsigned getRegSizeInBits(const TargetRegisterClass &RC) const {
- return getRegClassInfo(RC).RegSize;
+ TypeSize getRegSizeInBits(const TargetRegisterClass &RC) const {
+ return TypeSize::Fixed(getRegClassInfo(RC).RegSize);
}
/// Return the size in bytes of the stack slot allocated to hold a spilled
@@ -853,7 +853,7 @@ class TargetRegisterInfo : public MCRegisterInfo {
const TargetRegisterClass *RC) const = 0;
/// Returns size in bits of a phys/virtual/generic register.
- unsigned getRegSizeInBits(Register Reg, const MachineRegisterInfo &MRI) const;
+ TypeSize getRegSizeInBits(Register Reg, const MachineRegisterInfo &MRI) const;
/// Get the weight in units of pressure for this register unit.
virtual unsigned getRegUnitWeight(unsigned RegUnit) const = 0;
diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp
index dadaf60fa09da04..9837a93d8339974 100644
--- a/llvm/lib/CodeGen/MachineVerifier.cpp
+++ b/llvm/lib/CodeGen/MachineVerifier.cpp
@@ -1937,8 +1937,9 @@ void MachineVerifier::visitMachineInstrBefore(const MachineInstr *MI) {
// If we have only one valid type, this is likely a copy between a virtual
// and physical register.
- unsigned SrcSize = 0;
- unsigned DstSize = 0;
+ TypeSize SrcSize = TRI->getRegSizeInBits(SrcReg, *MRI);
+ TypeSize DstSize = TRI->getRegSizeInBits(DstReg, *MRI);
+
if (SrcReg.isPhysical() && DstTy.isValid()) {
const TargetRegisterClass *SrcRC =
TRI->getMinimalPhysRegClassLLT(SrcReg, DstTy);
@@ -1946,7 +1947,7 @@ void MachineVerifier::visitMachineInstrBefore(const MachineInstr *MI) {
SrcSize = TRI->getRegSizeInBits(*SrcRC);
}
- if (SrcSize == 0)
+ if (SrcSize.isZero())
SrcSize = TRI->getRegSizeInBits(SrcReg, *MRI);
if (DstReg.isPhysical() && SrcTy.isValid()) {
@@ -1956,10 +1957,21 @@ void MachineVerifier::visitMachineInstrBefore(const MachineInstr *MI) {
DstSize = TRI->getRegSizeInBits(*DstRC);
}
- if (DstSize == 0)
+ if (DstSize.isZero())
DstSize = TRI->getRegSizeInBits(DstReg, *MRI);
- if (SrcSize != 0 && DstSize != 0 && SrcSize != DstSize) {
+ // If the Dst is scalable and the Src is fixed, then the Dst can only hold
+ // the Src if the minimum size Dst can hold is at least as big as Src.
+ if (DstSize.isScalable() && !SrcSize.isScalable() &&
+ DstSize.getKnownMinValue() <= SrcSize.getFixedValue())
+ break;
+ // If the Src is scalable and the Dst is fixed, then Dest can only hold
+ // the Src is known to fit in Dest
+ if (SrcSize.isScalable() && !DstSize.isScalable() &&
+ TypeSize::isKnownLE(DstSize, SrcSize))
+ break;
+
+ if (SrcSize.isNonZero() && DstSize.isNonZero() && SrcSize != DstSize) {
if (!DstOp.getSubReg() && !SrcOp.getSubReg()) {
report("Copy Instruction is illegal with mismatching sizes", MI);
errs() << "Def Size = " << DstSize << ", Src Size = " << SrcSize
diff --git a/llvm/lib/CodeGen/TargetRegisterInfo.cpp b/llvm/lib/CodeGen/TargetRegisterInfo.cpp
index 1bb35f40facfd0f..c50b1cf9422717a 100644
--- a/llvm/lib/CodeGen/TargetRegisterInfo.cpp
+++ b/llvm/lib/CodeGen/TargetRegisterInfo.cpp
@@ -499,7 +499,7 @@ bool TargetRegisterInfo::regmaskSubsetEqual(const uint32_t *mask0,
return true;
}
-unsigned
+TypeSize
TargetRegisterInfo::getRegSizeInBits(Register Reg,
const MachineRegisterInfo &MRI) const {
const TargetRegisterClass *RC{};
@@ -508,16 +508,15 @@ TargetRegisterInfo::getRegSizeInBits(Register Reg,
// Instead, we need to access a register class that contains Reg and
// get the size of that register class.
RC = getMinimalPhysRegClass(Reg);
- } else {
- LLT Ty = MRI.getType(Reg);
- unsigned RegSize = Ty.isValid() ? Ty.getSizeInBits() : 0;
- // If Reg is not a generic register, query the register class to
- // get its size.
- if (RegSize)
- return RegSize;
- // Since Reg is not a generic register, it must have a register class.
- RC = MRI.getRegClass(Reg);
+ assert(RC && "Unable to deduce the register class");
+ return getRegSizeInBits(*RC);
}
+ LLT Ty = MRI.getType(Reg);
+ if (Ty.isValid())
+ return Ty.getSizeInBits();
+
+ // Since Reg is not a generic register, it may have a register class.
+ RC = MRI.getRegClass(Reg);
assert(RC && "Unable to deduce the register class");
return getRegSizeInBits(*RC);
}
>From fc1e4dc6e89d56b2ce714dad87014934229ce128 Mon Sep 17 00:00:00 2001
From: Michael Maitland <michaeltmaitland at gmail.com>
Date: Tue, 31 Oct 2023 08:44:51 -0700
Subject: [PATCH 2/4] [RISCV][GISEL] Add support for lowerFormalArguments that
contain scalable vector types
Scalable vector types from LLVM IR can be lowered to scalable vector
types in MIR according to the RISCV::CC_RISCV function.
---
llvm/lib/CodeGen/LowLevelType.cpp | 2 +-
.../Target/RISCV/GISel/RISCVCallLowering.cpp | 7 +
.../RISCV/GlobalISel/irtranslator/vec-args.ll | 693 ++++++++++++++++++
3 files changed, 701 insertions(+), 1 deletion(-)
create mode 100644 llvm/test/CodeGen/RISCV/GlobalISel/irtranslator/vec-args.ll
diff --git a/llvm/lib/CodeGen/LowLevelType.cpp b/llvm/lib/CodeGen/LowLevelType.cpp
index 24c30b756737b20..cd85bf606989f9e 100644
--- a/llvm/lib/CodeGen/LowLevelType.cpp
+++ b/llvm/lib/CodeGen/LowLevelType.cpp
@@ -17,7 +17,7 @@ using namespace llvm;
LLT::LLT(MVT VT) {
if (VT.isVector()) {
- bool asVector = VT.getVectorMinNumElements() > 1;
+ bool asVector = VT.getVectorMinNumElements() > 1 || VT.isScalableVector();
init(/*IsPointer=*/false, asVector, /*IsScalar=*/!asVector,
VT.getVectorElementCount(), VT.getVectorElementType().getSizeInBits(),
/*AddressSpace=*/0);
diff --git a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
index 1806fcf4b5a1664..1fb9c1136addd03 100644
--- a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
+++ b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
@@ -14,6 +14,7 @@
#include "RISCVCallLowering.h"
#include "RISCVISelLowering.h"
+#include "RISCVMachineFunctionInfo.h"
#include "RISCVSubtarget.h"
#include "llvm/CodeGen/Analysis.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
@@ -181,6 +182,9 @@ struct RISCVIncomingValueAssigner : public CallLowering::IncomingValueAssigner {
const DataLayout &DL = MF.getDataLayout();
const RISCVSubtarget &Subtarget = MF.getSubtarget<RISCVSubtarget>();
+ if (LocVT.isScalableVector())
+ MF.getInfo<RISCVMachineFunctionInfo>()->setIsVectorCall();
+
return RISCVAssignFn(DL, Subtarget.getTargetABI(), ValNo, ValVT, LocVT,
LocInfo, Flags, State, /*IsFixed=*/true, IsRet,
Info.Ty, *Subtarget.getTargetLowering(),
@@ -303,6 +307,9 @@ static bool isSupportedArgumentType(Type *T, const RISCVSubtarget &Subtarget) {
return true;
if (T->isPointerTy())
return true;
+ // TODO: Support fixed vector types.
+ if (T->isVectorTy() && T->isScalableTy() && Subtarget.hasVInstructions())
+ return true;
return false;
}
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/irtranslator/vec-args.ll b/llvm/test/CodeGen/RISCV/GlobalISel/irtranslator/vec-args.ll
new file mode 100644
index 000000000000000..8dfe00f678622fe
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/irtranslator/vec-args.ll
@@ -0,0 +1,693 @@
+; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+v -global-isel -stop-after=irtranslator \
+; RUN: -verify-machineinstrs < %s | FileCheck -check-prefix=RV32 %s
+; RUN: llc -mtriple=riscv64 -mattr=+v -global-isel -stop-after=irtranslator \
+; RUN: -verify-machineinstrs < %s | FileCheck -check-prefix=RV64 %s
+
+; ==========================================================================
+; ============================= Scalable Types =============================
+; ==========================================================================
+
+define void @test_args_nxv1i8(<vscale x 1 x i8> %a) {
+ ; RV32-LABEL: name: test_args_nxv1i8
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s8>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv1i8
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s8>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv2i8(<vscale x 2 x i8> %a) {
+ ; RV32-LABEL: name: test_args_nxv2i8
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s8>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv2i8
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s8>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv4i8(<vscale x 4 x i8> %a) {
+ ; RV32-LABEL: name: test_args_nxv4i8
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s8>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv4i8
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s8>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv8i8(<vscale x 8 x i8> %a) {
+ ; RV32-LABEL: name: test_args_nxv8i8
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s8>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv8i8
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s8>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv16i8(<vscale x 16 x i8> %a) {
+ ; RV32-LABEL: name: test_args_nxv16i8
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m2
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s8>) = COPY $v8m2
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv16i8
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m2
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s8>) = COPY $v8m2
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv32i8(<vscale x 32 x i8> %a) {
+ ; RV32-LABEL: name: test_args_nxv32i8
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m4
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 32 x s8>) = COPY $v8m4
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv32i8
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m4
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 32 x s8>) = COPY $v8m4
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv64i8(<vscale x 64 x i8> %a) {
+ ; RV32-LABEL: name: test_args_nxv64i8
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 64 x s8>) = COPY $v8m8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv64i8
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 64 x s8>) = COPY $v8m8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv1i16(<vscale x 1 x i16> %a) {
+ ; RV32-LABEL: name: test_args_nxv1i16
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s16>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv1i16
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s16>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv2i16(<vscale x 2 x i16> %a) {
+ ; RV32-LABEL: name: test_args_nxv2i16
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s16>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv2i16
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s16>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv4i16(<vscale x 4 x i16> %a) {
+ ; RV32-LABEL: name: test_args_nxv4i16
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s16>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv4i16
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s16>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv8i16(<vscale x 8 x i16> %a) {
+ ; RV32-LABEL: name: test_args_nxv8i16
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m2
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s16>) = COPY $v8m2
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv8i16
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m2
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s16>) = COPY $v8m2
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv16i16(<vscale x 16 x i16> %a) {
+ ; RV32-LABEL: name: test_args_nxv16i16
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m4
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s16>) = COPY $v8m4
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv16i16
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m4
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s16>) = COPY $v8m4
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv32i16(<vscale x 32 x i16> %a) {
+ ; RV32-LABEL: name: test_args_nxv32i16
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 32 x s16>) = COPY $v8m8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv32i16
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 32 x s16>) = COPY $v8m8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv1i32(<vscale x 1 x i32> %a) {
+ ; RV32-LABEL: name: test_args_nxv1i32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s32>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv1i32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s32>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv2i32(<vscale x 2 x i32> %a) {
+ ; RV32-LABEL: name: test_args_nxv2i32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s32>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv2i32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s32>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv4i32(<vscale x 4 x i32> %a) {
+ ; RV32-LABEL: name: test_args_nxv4i32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m2
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s32>) = COPY $v8m2
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv4i32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m2
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s32>) = COPY $v8m2
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv8i32(<vscale x 8 x i32> %a) {
+ ; RV32-LABEL: name: test_args_nxv8i32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m4
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s32>) = COPY $v8m4
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv8i32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m4
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s32>) = COPY $v8m4
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv16i32(<vscale x 16 x i32> %a) {
+ ; RV32-LABEL: name: test_args_nxv16i32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s32>) = COPY $v8m8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv16i32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s32>) = COPY $v8m8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv1i64(<vscale x 1 x i64> %a) {
+ ; RV32-LABEL: name: test_args_nxv1i64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s64>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv1i64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s64>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv2i64(<vscale x 2 x i64> %a) {
+ ; RV32-LABEL: name: test_args_nxv2i64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m2
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s64>) = COPY $v8m2
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv2i64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m2
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s64>) = COPY $v8m2
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv4i64(<vscale x 4 x i64> %a) {
+ ; RV32-LABEL: name: test_args_nxv4i64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m4
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s64>) = COPY $v8m4
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv4i64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m4
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s64>) = COPY $v8m4
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv8i64(<vscale x 8 x i64> %a) {
+ ; RV32-LABEL: name: test_args_nxv8i64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s64>) = COPY $v8m8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv8i64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s64>) = COPY $v8m8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv64i1(<vscale x 64 x i1> %a) {
+ ; RV32-LABEL: name: test_args_nxv64i1
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 64 x s1>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv64i1
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 64 x s1>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv32i1(<vscale x 32 x i1> %a) {
+ ; RV32-LABEL: name: test_args_nxv32i1
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 32 x s1>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv32i1
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 32 x s1>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv16i1(<vscale x 16 x i1> %a) {
+ ; RV32-LABEL: name: test_args_nxv16i1
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s1>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv16i1
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s1>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv8i1(<vscale x 8 x i1> %a) {
+ ; RV32-LABEL: name: test_args_nxv8i1
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s1>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv8i1
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s1>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv4i1(<vscale x 4 x i1> %a) {
+ ; RV32-LABEL: name: test_args_nxv4i1
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s1>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv4i1
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s1>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv2i1(<vscale x 2 x i1> %a) {
+ ; RV32-LABEL: name: test_args_nxv2i1
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s1>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv2i1
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s1>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv1i1(<vscale x 1 x i1> %a) {
+ ; RV32-LABEL: name: test_args_nxv1i1
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s1>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv1i1
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s1>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv1f32(<vscale x 1 x float> %a) {
+ ; RV32-LABEL: name: test_args_nxv1f32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s32>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv1f32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s32>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv2f32(<vscale x 2 x float> %a) {
+ ; RV32-LABEL: name: test_args_nxv2f32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s32>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv2f32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s32>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv4f32(<vscale x 4 x float> %a) {
+ ; RV32-LABEL: name: test_args_nxv4f32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m2
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s32>) = COPY $v8m2
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv4f32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m2
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s32>) = COPY $v8m2
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv8f32(<vscale x 8 x float> %a) {
+ ; RV32-LABEL: name: test_args_nxv8f32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m4
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s32>) = COPY $v8m4
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv8f32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m4
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s32>) = COPY $v8m4
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv16f32(<vscale x 16 x float> %a) {
+ ; RV32-LABEL: name: test_args_nxv16f32
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s32>) = COPY $v8m8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv16f32
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 16 x s32>) = COPY $v8m8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv1f64(<vscale x 1 x double> %a) {
+ ; RV32-LABEL: name: test_args_nxv1f64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s64>) = COPY $v8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv1f64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 1 x s64>) = COPY $v8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv2f64(<vscale x 2 x double> %a) {
+ ; RV32-LABEL: name: test_args_nxv2f64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m2
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s64>) = COPY $v8m2
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv2f64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m2
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 2 x s64>) = COPY $v8m2
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv4f64(<vscale x 4 x double> %a) {
+ ; RV32-LABEL: name: test_args_nxv4f64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m4
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s64>) = COPY $v8m4
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv4f64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m4
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 4 x s64>) = COPY $v8m4
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
+
+define void @test_args_nxv8f64(<vscale x 8 x double> %a) {
+ ; RV32-LABEL: name: test_args_nxv8f64
+ ; RV32: bb.1.entry:
+ ; RV32-NEXT: liveins: $v8m8
+ ; RV32-NEXT: {{ $}}
+ ; RV32-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s64>) = COPY $v8m8
+ ; RV32-NEXT: PseudoRET
+ ;
+ ; RV64-LABEL: name: test_args_nxv8f64
+ ; RV64: bb.1.entry:
+ ; RV64-NEXT: liveins: $v8m8
+ ; RV64-NEXT: {{ $}}
+ ; RV64-NEXT: [[COPY:%[0-9]+]]:_(<vscale x 8 x s64>) = COPY $v8m8
+ ; RV64-NEXT: PseudoRET
+entry:
+ ret void
+}
>From ea30aca38d6d184a4ca90e5329573ef0c40ab275 Mon Sep 17 00:00:00 2001
From: Michael Maitland <michaeltmaitland at gmail.com>
Date: Wed, 1 Nov 2023 12:00:46 -0700
Subject: [PATCH 3/4] don't support vectors for lowerCall
---
llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
index 1fb9c1136addd03..65409e453c43b79 100644
--- a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
+++ b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
@@ -298,7 +298,9 @@ RISCVCallLowering::RISCVCallLowering(const RISCVTargetLowering &TLI)
: CallLowering(&TLI) {}
// TODO: Support all argument types.
-static bool isSupportedArgumentType(Type *T, const RISCVSubtarget &Subtarget) {
+// TODO: Remove IsLowerArgs argument by adding support for vectors in lowerCall.
+static bool isSupportedArgumentType(Type *T, const RISCVSubtarget &Subtarget,
+ bool IsLowerArgs = false) {
// TODO: Integers larger than 2*XLen are passed indirectly which is not
// supported yet.
if (T->isIntegerTy())
@@ -308,7 +310,8 @@ static bool isSupportedArgumentType(Type *T, const RISCVSubtarget &Subtarget) {
if (T->isPointerTy())
return true;
// TODO: Support fixed vector types.
- if (T->isVectorTy() && T->isScalableTy() && Subtarget.hasVInstructions())
+ if (IsLowerArgs && T->isVectorTy() && T->isScalableTy() &&
+ Subtarget.hasVInstructions())
return true;
return false;
}
@@ -397,7 +400,7 @@ bool RISCVCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
const RISCVSubtarget &Subtarget =
MIRBuilder.getMF().getSubtarget<RISCVSubtarget>();
for (auto &Arg : F.args()) {
- if (!isSupportedArgumentType(Arg.getType(), Subtarget))
+ if (!isSupportedArgumentType(Arg.getType(), Subtarget, /*IsLowerArgs*/true))
return false;
}
>From 67f562ea9c35a0ab123ba67a54a4007c33906043 Mon Sep 17 00:00:00 2001
From: Michael Maitland <michaeltmaitland at gmail.com>
Date: Wed, 1 Nov 2023 13:33:37 -0700
Subject: [PATCH 4/4] bail out for 16b fp vector types
---
llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
index 65409e453c43b79..0f4940794ffa9cc 100644
--- a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
+++ b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
@@ -309,9 +309,10 @@ static bool isSupportedArgumentType(Type *T, const RISCVSubtarget &Subtarget,
return true;
if (T->isPointerTy())
return true;
+ // TODO: support 16bit FPtypes.
// TODO: Support fixed vector types.
- if (IsLowerArgs && T->isVectorTy() && T->isScalableTy() &&
- Subtarget.hasVInstructions())
+ if (IsLowerArgs && T->isVectorTy() && Subtarget.hasVInstructions() &&
+ !T->is16bitFPTy() && T->isScalableTy())
return true;
return false;
}
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