mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-03 02:30:00 +00:00
da25cd3e6d
This adds minimal support to the SelectionDAG for handling address spaces with different pointer sizes. The SelectionDAG should now correctly lower pointer function arguments to the correct size as well as generate the correct code when lowering getelementptr. This patch also updates the R600 DataLayout to use 32-bit pointers for the local address space. v2: - Add more helper functions to TargetLoweringBase - Use CHECK-LABEL for tests git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189221 91177308-0d34-0410-b5e6-96231b3b80d8
654 lines
24 KiB
C++
654 lines
24 KiB
C++
//===-- AMDGPUISelLowering.cpp - AMDGPU Common DAG lowering functions -----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// \brief This is the parent TargetLowering class for hardware code gen
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/// targets.
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//
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//===----------------------------------------------------------------------===//
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#include "AMDGPUISelLowering.h"
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#include "AMDGPU.h"
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#include "AMDGPURegisterInfo.h"
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#include "AMDGPUSubtarget.h"
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#include "AMDILIntrinsicInfo.h"
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#include "R600MachineFunctionInfo.h"
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#include "SIMachineFunctionInfo.h"
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#include "llvm/CodeGen/CallingConvLower.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
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#include "llvm/IR/DataLayout.h"
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using namespace llvm;
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#include "AMDGPUGenCallingConv.inc"
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AMDGPUTargetLowering::AMDGPUTargetLowering(TargetMachine &TM) :
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TargetLowering(TM, new TargetLoweringObjectFileELF()) {
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// Initialize target lowering borrowed from AMDIL
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InitAMDILLowering();
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// We need to custom lower some of the intrinsics
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setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
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// Library functions. These default to Expand, but we have instructions
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// for them.
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setOperationAction(ISD::FCEIL, MVT::f32, Legal);
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setOperationAction(ISD::FEXP2, MVT::f32, Legal);
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setOperationAction(ISD::FPOW, MVT::f32, Legal);
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setOperationAction(ISD::FLOG2, MVT::f32, Legal);
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setOperationAction(ISD::FABS, MVT::f32, Legal);
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setOperationAction(ISD::FFLOOR, MVT::f32, Legal);
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setOperationAction(ISD::FRINT, MVT::f32, Legal);
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// The hardware supports ROTR, but not ROTL
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setOperationAction(ISD::ROTL, MVT::i32, Expand);
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// Lower floating point store/load to integer store/load to reduce the number
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// of patterns in tablegen.
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setOperationAction(ISD::STORE, MVT::f32, Promote);
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AddPromotedToType(ISD::STORE, MVT::f32, MVT::i32);
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setOperationAction(ISD::STORE, MVT::v2f32, Promote);
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AddPromotedToType(ISD::STORE, MVT::v2f32, MVT::v2i32);
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setOperationAction(ISD::STORE, MVT::v4f32, Promote);
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AddPromotedToType(ISD::STORE, MVT::v4f32, MVT::v4i32);
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setOperationAction(ISD::STORE, MVT::f64, Promote);
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AddPromotedToType(ISD::STORE, MVT::f64, MVT::i64);
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setTruncStoreAction(MVT::v2i32, MVT::v2i16, Custom);
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setTruncStoreAction(MVT::v2i32, MVT::v2i8, Custom);
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setTruncStoreAction(MVT::v4i32, MVT::v4i8, Custom);
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// XXX: This can be change to Custom, once ExpandVectorStores can
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// handle 64-bit stores.
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setTruncStoreAction(MVT::v4i32, MVT::v4i16, Expand);
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setOperationAction(ISD::LOAD, MVT::f32, Promote);
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AddPromotedToType(ISD::LOAD, MVT::f32, MVT::i32);
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setOperationAction(ISD::LOAD, MVT::v2f32, Promote);
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AddPromotedToType(ISD::LOAD, MVT::v2f32, MVT::v2i32);
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setOperationAction(ISD::LOAD, MVT::v4f32, Promote);
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AddPromotedToType(ISD::LOAD, MVT::v4f32, MVT::v4i32);
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setOperationAction(ISD::LOAD, MVT::f64, Promote);
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AddPromotedToType(ISD::LOAD, MVT::f64, MVT::i64);
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setOperationAction(ISD::CONCAT_VECTORS, MVT::v4i32, Custom);
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setOperationAction(ISD::CONCAT_VECTORS, MVT::v4f32, Custom);
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setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v2i32, Custom);
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setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v2f32, Custom);
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setLoadExtAction(ISD::EXTLOAD, MVT::v2i8, Expand);
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setLoadExtAction(ISD::SEXTLOAD, MVT::v2i8, Expand);
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setLoadExtAction(ISD::ZEXTLOAD, MVT::v2i8, Expand);
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setLoadExtAction(ISD::EXTLOAD, MVT::v4i8, Expand);
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setLoadExtAction(ISD::SEXTLOAD, MVT::v4i8, Expand);
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setLoadExtAction(ISD::ZEXTLOAD, MVT::v4i8, Expand);
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setLoadExtAction(ISD::EXTLOAD, MVT::v2i16, Expand);
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setLoadExtAction(ISD::SEXTLOAD, MVT::v2i16, Expand);
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setLoadExtAction(ISD::ZEXTLOAD, MVT::v2i16, Expand);
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setLoadExtAction(ISD::EXTLOAD, MVT::v4i16, Expand);
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setLoadExtAction(ISD::SEXTLOAD, MVT::v4i16, Expand);
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setLoadExtAction(ISD::ZEXTLOAD, MVT::v4i16, Expand);
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setOperationAction(ISD::FNEG, MVT::v2f32, Expand);
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setOperationAction(ISD::FNEG, MVT::v4f32, Expand);
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setOperationAction(ISD::MUL, MVT::i64, Expand);
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setOperationAction(ISD::UDIV, MVT::i32, Expand);
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setOperationAction(ISD::UDIVREM, MVT::i32, Custom);
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setOperationAction(ISD::UREM, MVT::i32, Expand);
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setOperationAction(ISD::VSELECT, MVT::v2f32, Expand);
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setOperationAction(ISD::VSELECT, MVT::v4f32, Expand);
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static const MVT::SimpleValueType IntTypes[] = {
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MVT::v2i32, MVT::v4i32
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};
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const size_t NumIntTypes = array_lengthof(IntTypes);
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for (unsigned int x = 0; x < NumIntTypes; ++x) {
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MVT::SimpleValueType VT = IntTypes[x];
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//Expand the following operations for the current type by default
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setOperationAction(ISD::ADD, VT, Expand);
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setOperationAction(ISD::AND, VT, Expand);
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setOperationAction(ISD::FP_TO_SINT, VT, Expand);
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setOperationAction(ISD::FP_TO_UINT, VT, Expand);
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setOperationAction(ISD::MUL, VT, Expand);
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setOperationAction(ISD::OR, VT, Expand);
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setOperationAction(ISD::SHL, VT, Expand);
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setOperationAction(ISD::SINT_TO_FP, VT, Expand);
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setOperationAction(ISD::SRL, VT, Expand);
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setOperationAction(ISD::SRA, VT, Expand);
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setOperationAction(ISD::SUB, VT, Expand);
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setOperationAction(ISD::UDIV, VT, Expand);
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setOperationAction(ISD::UINT_TO_FP, VT, Expand);
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setOperationAction(ISD::UREM, VT, Expand);
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setOperationAction(ISD::VSELECT, VT, Expand);
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setOperationAction(ISD::XOR, VT, Expand);
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}
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static const MVT::SimpleValueType FloatTypes[] = {
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MVT::v2f32, MVT::v4f32
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};
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const size_t NumFloatTypes = array_lengthof(FloatTypes);
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for (unsigned int x = 0; x < NumFloatTypes; ++x) {
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MVT::SimpleValueType VT = FloatTypes[x];
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setOperationAction(ISD::FADD, VT, Expand);
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setOperationAction(ISD::FDIV, VT, Expand);
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setOperationAction(ISD::FFLOOR, VT, Expand);
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setOperationAction(ISD::FMUL, VT, Expand);
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setOperationAction(ISD::FRINT, VT, Expand);
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setOperationAction(ISD::FSUB, VT, Expand);
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}
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}
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//===----------------------------------------------------------------------===//
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// Target Information
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//===----------------------------------------------------------------------===//
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MVT AMDGPUTargetLowering::getVectorIdxTy() const {
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return MVT::i32;
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}
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//===---------------------------------------------------------------------===//
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// Target Properties
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//===---------------------------------------------------------------------===//
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bool AMDGPUTargetLowering::isFAbsFree(EVT VT) const {
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assert(VT.isFloatingPoint());
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return VT == MVT::f32;
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}
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bool AMDGPUTargetLowering::isFNegFree(EVT VT) const {
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assert(VT.isFloatingPoint());
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return VT == MVT::f32;
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}
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//===---------------------------------------------------------------------===//
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// TargetLowering Callbacks
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//===---------------------------------------------------------------------===//
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void AMDGPUTargetLowering::AnalyzeFormalArguments(CCState &State,
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const SmallVectorImpl<ISD::InputArg> &Ins) const {
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State.AnalyzeFormalArguments(Ins, CC_AMDGPU);
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}
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SDValue AMDGPUTargetLowering::LowerReturn(
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SDValue Chain,
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CallingConv::ID CallConv,
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bool isVarArg,
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const SmallVectorImpl<ISD::OutputArg> &Outs,
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const SmallVectorImpl<SDValue> &OutVals,
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SDLoc DL, SelectionDAG &DAG) const {
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return DAG.getNode(AMDGPUISD::RET_FLAG, DL, MVT::Other, Chain);
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}
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//===---------------------------------------------------------------------===//
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// Target specific lowering
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//===---------------------------------------------------------------------===//
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SDValue AMDGPUTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG)
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const {
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switch (Op.getOpcode()) {
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default:
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Op.getNode()->dump();
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assert(0 && "Custom lowering code for this"
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"instruction is not implemented yet!");
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break;
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// AMDIL DAG lowering
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case ISD::SDIV: return LowerSDIV(Op, DAG);
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case ISD::SREM: return LowerSREM(Op, DAG);
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case ISD::SIGN_EXTEND_INREG: return LowerSIGN_EXTEND_INREG(Op, DAG);
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case ISD::BRCOND: return LowerBRCOND(Op, DAG);
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// AMDGPU DAG lowering
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case ISD::CONCAT_VECTORS: return LowerCONCAT_VECTORS(Op, DAG);
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case ISD::EXTRACT_SUBVECTOR: return LowerEXTRACT_SUBVECTOR(Op, DAG);
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case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG);
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case ISD::STORE: return LowerVectorStore(Op, DAG);
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case ISD::UDIVREM: return LowerUDIVREM(Op, DAG);
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}
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return Op;
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}
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SDValue AMDGPUTargetLowering::LowerGlobalAddress(AMDGPUMachineFunction* MFI,
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SDValue Op,
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SelectionDAG &DAG) const {
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const DataLayout *TD = getTargetMachine().getDataLayout();
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GlobalAddressSDNode *G = cast<GlobalAddressSDNode>(Op);
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assert(G->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS);
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// XXX: What does the value of G->getOffset() mean?
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assert(G->getOffset() == 0 &&
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"Do not know what to do with an non-zero offset");
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unsigned Offset = MFI->LDSSize;
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const GlobalValue *GV = G->getGlobal();
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uint64_t Size = TD->getTypeAllocSize(GV->getType()->getElementType());
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// XXX: Account for alignment?
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MFI->LDSSize += Size;
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return DAG.getConstant(Offset, getPointerTy(G->getAddressSpace()));
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}
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void AMDGPUTargetLowering::ExtractVectorElements(SDValue Op, SelectionDAG &DAG,
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SmallVectorImpl<SDValue> &Args,
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unsigned Start,
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unsigned Count) const {
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EVT VT = Op.getValueType();
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for (unsigned i = Start, e = Start + Count; i != e; ++i) {
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Args.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(Op),
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VT.getVectorElementType(),
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Op, DAG.getConstant(i, MVT::i32)));
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}
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}
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SDValue AMDGPUTargetLowering::LowerCONCAT_VECTORS(SDValue Op,
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SelectionDAG &DAG) const {
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SmallVector<SDValue, 8> Args;
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SDValue A = Op.getOperand(0);
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SDValue B = Op.getOperand(1);
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ExtractVectorElements(A, DAG, Args, 0,
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A.getValueType().getVectorNumElements());
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ExtractVectorElements(B, DAG, Args, 0,
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B.getValueType().getVectorNumElements());
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return DAG.getNode(ISD::BUILD_VECTOR, SDLoc(Op), Op.getValueType(),
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&Args[0], Args.size());
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}
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SDValue AMDGPUTargetLowering::LowerEXTRACT_SUBVECTOR(SDValue Op,
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SelectionDAG &DAG) const {
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SmallVector<SDValue, 8> Args;
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EVT VT = Op.getValueType();
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unsigned Start = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
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ExtractVectorElements(Op.getOperand(0), DAG, Args, Start,
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VT.getVectorNumElements());
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return DAG.getNode(ISD::BUILD_VECTOR, SDLoc(Op), Op.getValueType(),
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&Args[0], Args.size());
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}
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SDValue AMDGPUTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
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SelectionDAG &DAG) const {
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unsigned IntrinsicID = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
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SDLoc DL(Op);
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EVT VT = Op.getValueType();
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switch (IntrinsicID) {
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default: return Op;
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case AMDGPUIntrinsic::AMDIL_abs:
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return LowerIntrinsicIABS(Op, DAG);
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case AMDGPUIntrinsic::AMDIL_exp:
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return DAG.getNode(ISD::FEXP2, DL, VT, Op.getOperand(1));
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case AMDGPUIntrinsic::AMDGPU_lrp:
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return LowerIntrinsicLRP(Op, DAG);
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case AMDGPUIntrinsic::AMDIL_fraction:
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return DAG.getNode(AMDGPUISD::FRACT, DL, VT, Op.getOperand(1));
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case AMDGPUIntrinsic::AMDIL_max:
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return DAG.getNode(AMDGPUISD::FMAX, DL, VT, Op.getOperand(1),
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Op.getOperand(2));
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case AMDGPUIntrinsic::AMDGPU_imax:
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return DAG.getNode(AMDGPUISD::SMAX, DL, VT, Op.getOperand(1),
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Op.getOperand(2));
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case AMDGPUIntrinsic::AMDGPU_umax:
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return DAG.getNode(AMDGPUISD::UMAX, DL, VT, Op.getOperand(1),
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Op.getOperand(2));
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case AMDGPUIntrinsic::AMDIL_min:
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return DAG.getNode(AMDGPUISD::FMIN, DL, VT, Op.getOperand(1),
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Op.getOperand(2));
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case AMDGPUIntrinsic::AMDGPU_imin:
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return DAG.getNode(AMDGPUISD::SMIN, DL, VT, Op.getOperand(1),
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Op.getOperand(2));
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case AMDGPUIntrinsic::AMDGPU_umin:
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return DAG.getNode(AMDGPUISD::UMIN, DL, VT, Op.getOperand(1),
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Op.getOperand(2));
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case AMDGPUIntrinsic::AMDIL_round_nearest:
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return DAG.getNode(ISD::FRINT, DL, VT, Op.getOperand(1));
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}
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}
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///IABS(a) = SMAX(sub(0, a), a)
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SDValue AMDGPUTargetLowering::LowerIntrinsicIABS(SDValue Op,
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SelectionDAG &DAG) const {
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SDLoc DL(Op);
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EVT VT = Op.getValueType();
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SDValue Neg = DAG.getNode(ISD::SUB, DL, VT, DAG.getConstant(0, VT),
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Op.getOperand(1));
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return DAG.getNode(AMDGPUISD::SMAX, DL, VT, Neg, Op.getOperand(1));
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}
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/// Linear Interpolation
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/// LRP(a, b, c) = muladd(a, b, (1 - a) * c)
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SDValue AMDGPUTargetLowering::LowerIntrinsicLRP(SDValue Op,
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SelectionDAG &DAG) const {
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SDLoc DL(Op);
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EVT VT = Op.getValueType();
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SDValue OneSubA = DAG.getNode(ISD::FSUB, DL, VT,
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DAG.getConstantFP(1.0f, MVT::f32),
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Op.getOperand(1));
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SDValue OneSubAC = DAG.getNode(ISD::FMUL, DL, VT, OneSubA,
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Op.getOperand(3));
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return DAG.getNode(ISD::FADD, DL, VT,
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DAG.getNode(ISD::FMUL, DL, VT, Op.getOperand(1), Op.getOperand(2)),
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OneSubAC);
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}
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/// \brief Generate Min/Max node
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SDValue AMDGPUTargetLowering::LowerMinMax(SDValue Op,
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SelectionDAG &DAG) const {
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SDLoc DL(Op);
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EVT VT = Op.getValueType();
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SDValue LHS = Op.getOperand(0);
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SDValue RHS = Op.getOperand(1);
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SDValue True = Op.getOperand(2);
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SDValue False = Op.getOperand(3);
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SDValue CC = Op.getOperand(4);
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if (VT != MVT::f32 ||
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!((LHS == True && RHS == False) || (LHS == False && RHS == True))) {
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return SDValue();
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}
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ISD::CondCode CCOpcode = cast<CondCodeSDNode>(CC)->get();
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switch (CCOpcode) {
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case ISD::SETOEQ:
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case ISD::SETONE:
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case ISD::SETUNE:
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case ISD::SETNE:
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case ISD::SETUEQ:
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case ISD::SETEQ:
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case ISD::SETFALSE:
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case ISD::SETFALSE2:
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case ISD::SETTRUE:
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case ISD::SETTRUE2:
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case ISD::SETUO:
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case ISD::SETO:
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assert(0 && "Operation should already be optimised !");
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case ISD::SETULE:
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case ISD::SETULT:
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case ISD::SETOLE:
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case ISD::SETOLT:
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case ISD::SETLE:
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case ISD::SETLT: {
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if (LHS == True)
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return DAG.getNode(AMDGPUISD::FMIN, DL, VT, LHS, RHS);
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else
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return DAG.getNode(AMDGPUISD::FMAX, DL, VT, LHS, RHS);
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}
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case ISD::SETGT:
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case ISD::SETGE:
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case ISD::SETUGE:
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case ISD::SETOGE:
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case ISD::SETUGT:
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case ISD::SETOGT: {
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if (LHS == True)
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return DAG.getNode(AMDGPUISD::FMAX, DL, VT, LHS, RHS);
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else
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return DAG.getNode(AMDGPUISD::FMIN, DL, VT, LHS, RHS);
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}
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case ISD::SETCC_INVALID:
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assert(0 && "Invalid setcc condcode !");
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}
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return Op;
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}
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SDValue AMDGPUTargetLowering::LowerUDIVREM(SDValue Op,
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SelectionDAG &DAG) const {
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SDLoc DL(Op);
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EVT VT = Op.getValueType();
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SDValue Num = Op.getOperand(0);
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SDValue Den = Op.getOperand(1);
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SmallVector<SDValue, 8> Results;
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// RCP = URECIP(Den) = 2^32 / Den + e
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// e is rounding error.
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SDValue RCP = DAG.getNode(AMDGPUISD::URECIP, DL, VT, Den);
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// RCP_LO = umulo(RCP, Den) */
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SDValue RCP_LO = DAG.getNode(ISD::UMULO, DL, VT, RCP, Den);
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// RCP_HI = mulhu (RCP, Den) */
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SDValue RCP_HI = DAG.getNode(ISD::MULHU, DL, VT, RCP, Den);
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// NEG_RCP_LO = -RCP_LO
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SDValue NEG_RCP_LO = DAG.getNode(ISD::SUB, DL, VT, DAG.getConstant(0, VT),
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RCP_LO);
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// ABS_RCP_LO = (RCP_HI == 0 ? NEG_RCP_LO : RCP_LO)
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SDValue ABS_RCP_LO = DAG.getSelectCC(DL, RCP_HI, DAG.getConstant(0, VT),
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NEG_RCP_LO, RCP_LO,
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ISD::SETEQ);
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// Calculate the rounding error from the URECIP instruction
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// E = mulhu(ABS_RCP_LO, RCP)
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SDValue E = DAG.getNode(ISD::MULHU, DL, VT, ABS_RCP_LO, RCP);
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// RCP_A_E = RCP + E
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SDValue RCP_A_E = DAG.getNode(ISD::ADD, DL, VT, RCP, E);
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// RCP_S_E = RCP - E
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SDValue RCP_S_E = DAG.getNode(ISD::SUB, DL, VT, RCP, E);
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// Tmp0 = (RCP_HI == 0 ? RCP_A_E : RCP_SUB_E)
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SDValue Tmp0 = DAG.getSelectCC(DL, RCP_HI, DAG.getConstant(0, VT),
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RCP_A_E, RCP_S_E,
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ISD::SETEQ);
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// Quotient = mulhu(Tmp0, Num)
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SDValue Quotient = DAG.getNode(ISD::MULHU, DL, VT, Tmp0, Num);
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// Num_S_Remainder = Quotient * Den
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SDValue Num_S_Remainder = DAG.getNode(ISD::UMULO, DL, VT, Quotient, Den);
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// Remainder = Num - Num_S_Remainder
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SDValue Remainder = DAG.getNode(ISD::SUB, DL, VT, Num, Num_S_Remainder);
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// Remainder_GE_Den = (Remainder >= Den ? -1 : 0)
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SDValue Remainder_GE_Den = DAG.getSelectCC(DL, Remainder, Den,
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DAG.getConstant(-1, VT),
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DAG.getConstant(0, VT),
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ISD::SETGE);
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// Remainder_GE_Zero = (Remainder >= 0 ? -1 : 0)
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SDValue Remainder_GE_Zero = DAG.getSelectCC(DL, Remainder,
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DAG.getConstant(0, VT),
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DAG.getConstant(-1, VT),
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DAG.getConstant(0, VT),
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ISD::SETGE);
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// Tmp1 = Remainder_GE_Den & Remainder_GE_Zero
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SDValue Tmp1 = DAG.getNode(ISD::AND, DL, VT, Remainder_GE_Den,
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Remainder_GE_Zero);
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// Calculate Division result:
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// Quotient_A_One = Quotient + 1
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SDValue Quotient_A_One = DAG.getNode(ISD::ADD, DL, VT, Quotient,
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DAG.getConstant(1, VT));
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// Quotient_S_One = Quotient - 1
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SDValue Quotient_S_One = DAG.getNode(ISD::SUB, DL, VT, Quotient,
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DAG.getConstant(1, VT));
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// Div = (Tmp1 == 0 ? Quotient : Quotient_A_One)
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SDValue Div = DAG.getSelectCC(DL, Tmp1, DAG.getConstant(0, VT),
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Quotient, Quotient_A_One, ISD::SETEQ);
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// Div = (Remainder_GE_Zero == 0 ? Quotient_S_One : Div)
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Div = DAG.getSelectCC(DL, Remainder_GE_Zero, DAG.getConstant(0, VT),
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Quotient_S_One, Div, ISD::SETEQ);
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// Calculate Rem result:
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// Remainder_S_Den = Remainder - Den
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SDValue Remainder_S_Den = DAG.getNode(ISD::SUB, DL, VT, Remainder, Den);
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// Remainder_A_Den = Remainder + Den
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SDValue Remainder_A_Den = DAG.getNode(ISD::ADD, DL, VT, Remainder, Den);
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// Rem = (Tmp1 == 0 ? Remainder : Remainder_S_Den)
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SDValue Rem = DAG.getSelectCC(DL, Tmp1, DAG.getConstant(0, VT),
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Remainder, Remainder_S_Den, ISD::SETEQ);
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// Rem = (Remainder_GE_Zero == 0 ? Remainder_A_Den : Rem)
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Rem = DAG.getSelectCC(DL, Remainder_GE_Zero, DAG.getConstant(0, VT),
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Remainder_A_Den, Rem, ISD::SETEQ);
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SDValue Ops[2];
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Ops[0] = Div;
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Ops[1] = Rem;
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return DAG.getMergeValues(Ops, 2, DL);
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}
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SDValue AMDGPUTargetLowering::LowerVectorStore(const SDValue &Op,
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SelectionDAG &DAG) const {
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StoreSDNode *Store = dyn_cast<StoreSDNode>(Op);
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EVT MemVT = Store->getMemoryVT();
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unsigned MemBits = MemVT.getSizeInBits();
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// Byte stores are really expensive, so if possible, try to pack
|
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// 32-bit vector truncatating store into an i32 store.
|
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// XXX: We could also handle optimize other vector bitwidths
|
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if (!MemVT.isVector() || MemBits > 32) {
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return SDValue();
|
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}
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|
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SDLoc DL(Op);
|
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const SDValue &Value = Store->getValue();
|
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EVT VT = Value.getValueType();
|
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const SDValue &Ptr = Store->getBasePtr();
|
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EVT MemEltVT = MemVT.getVectorElementType();
|
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unsigned MemEltBits = MemEltVT.getSizeInBits();
|
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unsigned MemNumElements = MemVT.getVectorNumElements();
|
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EVT PackedVT = EVT::getIntegerVT(*DAG.getContext(), MemVT.getSizeInBits());
|
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SDValue Mask;
|
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switch(MemEltBits) {
|
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case 8:
|
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Mask = DAG.getConstant(0xFF, PackedVT);
|
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break;
|
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case 16:
|
|
Mask = DAG.getConstant(0xFFFF, PackedVT);
|
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break;
|
|
default:
|
|
llvm_unreachable("Cannot lower this vector store");
|
|
}
|
|
SDValue PackedValue;
|
|
for (unsigned i = 0; i < MemNumElements; ++i) {
|
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EVT ElemVT = VT.getVectorElementType();
|
|
SDValue Elt = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ElemVT, Value,
|
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DAG.getConstant(i, MVT::i32));
|
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Elt = DAG.getZExtOrTrunc(Elt, DL, PackedVT);
|
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Elt = DAG.getNode(ISD::AND, DL, PackedVT, Elt, Mask);
|
|
SDValue Shift = DAG.getConstant(MemEltBits * i, PackedVT);
|
|
Elt = DAG.getNode(ISD::SHL, DL, PackedVT, Elt, Shift);
|
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if (i == 0) {
|
|
PackedValue = Elt;
|
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} else {
|
|
PackedValue = DAG.getNode(ISD::OR, DL, PackedVT, PackedValue, Elt);
|
|
}
|
|
}
|
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return DAG.getStore(Store->getChain(), DL, PackedValue, Ptr,
|
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MachinePointerInfo(Store->getMemOperand()->getValue()),
|
|
Store->isVolatile(), Store->isNonTemporal(),
|
|
Store->getAlignment());
|
|
}
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|
|
//===----------------------------------------------------------------------===//
|
|
// Helper functions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
bool AMDGPUTargetLowering::isHWTrueValue(SDValue Op) const {
|
|
if (ConstantFPSDNode * CFP = dyn_cast<ConstantFPSDNode>(Op)) {
|
|
return CFP->isExactlyValue(1.0);
|
|
}
|
|
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
|
|
return C->isAllOnesValue();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool AMDGPUTargetLowering::isHWFalseValue(SDValue Op) const {
|
|
if (ConstantFPSDNode * CFP = dyn_cast<ConstantFPSDNode>(Op)) {
|
|
return CFP->getValueAPF().isZero();
|
|
}
|
|
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
|
|
return C->isNullValue();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
SDValue AMDGPUTargetLowering::CreateLiveInRegister(SelectionDAG &DAG,
|
|
const TargetRegisterClass *RC,
|
|
unsigned Reg, EVT VT) const {
|
|
MachineFunction &MF = DAG.getMachineFunction();
|
|
MachineRegisterInfo &MRI = MF.getRegInfo();
|
|
unsigned VirtualRegister;
|
|
if (!MRI.isLiveIn(Reg)) {
|
|
VirtualRegister = MRI.createVirtualRegister(RC);
|
|
MRI.addLiveIn(Reg, VirtualRegister);
|
|
} else {
|
|
VirtualRegister = MRI.getLiveInVirtReg(Reg);
|
|
}
|
|
return DAG.getRegister(VirtualRegister, VT);
|
|
}
|
|
|
|
#define NODE_NAME_CASE(node) case AMDGPUISD::node: return #node;
|
|
|
|
const char* AMDGPUTargetLowering::getTargetNodeName(unsigned Opcode) const {
|
|
switch (Opcode) {
|
|
default: return 0;
|
|
// AMDIL DAG nodes
|
|
NODE_NAME_CASE(CALL);
|
|
NODE_NAME_CASE(UMUL);
|
|
NODE_NAME_CASE(DIV_INF);
|
|
NODE_NAME_CASE(RET_FLAG);
|
|
NODE_NAME_CASE(BRANCH_COND);
|
|
|
|
// AMDGPU DAG nodes
|
|
NODE_NAME_CASE(DWORDADDR)
|
|
NODE_NAME_CASE(FRACT)
|
|
NODE_NAME_CASE(FMAX)
|
|
NODE_NAME_CASE(SMAX)
|
|
NODE_NAME_CASE(UMAX)
|
|
NODE_NAME_CASE(FMIN)
|
|
NODE_NAME_CASE(SMIN)
|
|
NODE_NAME_CASE(UMIN)
|
|
NODE_NAME_CASE(URECIP)
|
|
NODE_NAME_CASE(EXPORT)
|
|
NODE_NAME_CASE(CONST_ADDRESS)
|
|
NODE_NAME_CASE(REGISTER_LOAD)
|
|
NODE_NAME_CASE(REGISTER_STORE)
|
|
NODE_NAME_CASE(LOAD_CONSTANT)
|
|
NODE_NAME_CASE(LOAD_INPUT)
|
|
NODE_NAME_CASE(SAMPLE)
|
|
NODE_NAME_CASE(SAMPLEB)
|
|
NODE_NAME_CASE(SAMPLED)
|
|
NODE_NAME_CASE(SAMPLEL)
|
|
NODE_NAME_CASE(STORE_MSKOR)
|
|
}
|
|
}
|