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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240804 91177308-0d34-0410-b5e6-96231b3b80d8
214 lines
7.0 KiB
C++
214 lines
7.0 KiB
C++
//===----------- VectorUtils.cpp - Vectorizer utility 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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// This file defines vectorizer utilities.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/VectorUtils.h"
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/// \brief Identify if the intrinsic is trivially vectorizable.
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/// This method returns true if the intrinsic's argument types are all
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/// scalars for the scalar form of the intrinsic and all vectors for
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/// the vector form of the intrinsic.
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bool llvm::isTriviallyVectorizable(Intrinsic::ID ID) {
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switch (ID) {
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case Intrinsic::sqrt:
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case Intrinsic::sin:
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case Intrinsic::cos:
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case Intrinsic::exp:
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case Intrinsic::exp2:
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case Intrinsic::log:
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case Intrinsic::log10:
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case Intrinsic::log2:
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case Intrinsic::fabs:
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case Intrinsic::minnum:
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case Intrinsic::maxnum:
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case Intrinsic::copysign:
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case Intrinsic::floor:
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case Intrinsic::ceil:
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case Intrinsic::trunc:
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case Intrinsic::rint:
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case Intrinsic::nearbyint:
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case Intrinsic::round:
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case Intrinsic::bswap:
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case Intrinsic::ctpop:
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case Intrinsic::pow:
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case Intrinsic::fma:
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case Intrinsic::fmuladd:
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case Intrinsic::ctlz:
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case Intrinsic::cttz:
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case Intrinsic::powi:
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return true;
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default:
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return false;
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}
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}
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/// \brief Identifies if the intrinsic has a scalar operand. It check for
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/// ctlz,cttz and powi special intrinsics whose argument is scalar.
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bool llvm::hasVectorInstrinsicScalarOpd(Intrinsic::ID ID,
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unsigned ScalarOpdIdx) {
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switch (ID) {
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case Intrinsic::ctlz:
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case Intrinsic::cttz:
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case Intrinsic::powi:
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return (ScalarOpdIdx == 1);
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default:
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return false;
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}
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}
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/// \brief Check call has a unary float signature
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/// It checks following:
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/// a) call should have a single argument
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/// b) argument type should be floating point type
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/// c) call instruction type and argument type should be same
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/// d) call should only reads memory.
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/// If all these condition is met then return ValidIntrinsicID
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/// else return not_intrinsic.
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llvm::Intrinsic::ID
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llvm::checkUnaryFloatSignature(const CallInst &I,
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Intrinsic::ID ValidIntrinsicID) {
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if (I.getNumArgOperands() != 1 ||
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!I.getArgOperand(0)->getType()->isFloatingPointTy() ||
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I.getType() != I.getArgOperand(0)->getType() || !I.onlyReadsMemory())
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return Intrinsic::not_intrinsic;
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return ValidIntrinsicID;
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}
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/// \brief Check call has a binary float signature
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/// It checks following:
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/// a) call should have 2 arguments.
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/// b) arguments type should be floating point type
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/// c) call instruction type and arguments type should be same
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/// d) call should only reads memory.
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/// If all these condition is met then return ValidIntrinsicID
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/// else return not_intrinsic.
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llvm::Intrinsic::ID
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llvm::checkBinaryFloatSignature(const CallInst &I,
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Intrinsic::ID ValidIntrinsicID) {
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if (I.getNumArgOperands() != 2 ||
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!I.getArgOperand(0)->getType()->isFloatingPointTy() ||
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!I.getArgOperand(1)->getType()->isFloatingPointTy() ||
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I.getType() != I.getArgOperand(0)->getType() ||
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I.getType() != I.getArgOperand(1)->getType() || !I.onlyReadsMemory())
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return Intrinsic::not_intrinsic;
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return ValidIntrinsicID;
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}
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/// \brief Returns intrinsic ID for call.
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/// For the input call instruction it finds mapping intrinsic and returns
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/// its ID, in case it does not found it return not_intrinsic.
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llvm::Intrinsic::ID llvm::getIntrinsicIDForCall(CallInst *CI,
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const TargetLibraryInfo *TLI) {
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// If we have an intrinsic call, check if it is trivially vectorizable.
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if (IntrinsicInst *II = dyn_cast<IntrinsicInst>(CI)) {
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Intrinsic::ID ID = II->getIntrinsicID();
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if (isTriviallyVectorizable(ID) || ID == Intrinsic::lifetime_start ||
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ID == Intrinsic::lifetime_end || ID == Intrinsic::assume)
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return ID;
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return Intrinsic::not_intrinsic;
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}
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if (!TLI)
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return Intrinsic::not_intrinsic;
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LibFunc::Func Func;
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Function *F = CI->getCalledFunction();
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// We're going to make assumptions on the semantics of the functions, check
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// that the target knows that it's available in this environment and it does
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// not have local linkage.
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if (!F || F->hasLocalLinkage() || !TLI->getLibFunc(F->getName(), Func))
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return Intrinsic::not_intrinsic;
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// Otherwise check if we have a call to a function that can be turned into a
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// vector intrinsic.
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switch (Func) {
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default:
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break;
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case LibFunc::sin:
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case LibFunc::sinf:
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case LibFunc::sinl:
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return checkUnaryFloatSignature(*CI, Intrinsic::sin);
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case LibFunc::cos:
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case LibFunc::cosf:
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case LibFunc::cosl:
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return checkUnaryFloatSignature(*CI, Intrinsic::cos);
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case LibFunc::exp:
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case LibFunc::expf:
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case LibFunc::expl:
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return checkUnaryFloatSignature(*CI, Intrinsic::exp);
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case LibFunc::exp2:
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case LibFunc::exp2f:
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case LibFunc::exp2l:
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return checkUnaryFloatSignature(*CI, Intrinsic::exp2);
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case LibFunc::log:
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case LibFunc::logf:
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case LibFunc::logl:
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return checkUnaryFloatSignature(*CI, Intrinsic::log);
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case LibFunc::log10:
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case LibFunc::log10f:
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case LibFunc::log10l:
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return checkUnaryFloatSignature(*CI, Intrinsic::log10);
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case LibFunc::log2:
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case LibFunc::log2f:
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case LibFunc::log2l:
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return checkUnaryFloatSignature(*CI, Intrinsic::log2);
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case LibFunc::fabs:
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case LibFunc::fabsf:
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case LibFunc::fabsl:
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return checkUnaryFloatSignature(*CI, Intrinsic::fabs);
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case LibFunc::fmin:
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case LibFunc::fminf:
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case LibFunc::fminl:
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return checkBinaryFloatSignature(*CI, Intrinsic::minnum);
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case LibFunc::fmax:
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case LibFunc::fmaxf:
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case LibFunc::fmaxl:
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return checkBinaryFloatSignature(*CI, Intrinsic::maxnum);
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case LibFunc::copysign:
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case LibFunc::copysignf:
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case LibFunc::copysignl:
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return checkBinaryFloatSignature(*CI, Intrinsic::copysign);
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case LibFunc::floor:
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case LibFunc::floorf:
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case LibFunc::floorl:
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return checkUnaryFloatSignature(*CI, Intrinsic::floor);
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case LibFunc::ceil:
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case LibFunc::ceilf:
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case LibFunc::ceill:
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return checkUnaryFloatSignature(*CI, Intrinsic::ceil);
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case LibFunc::trunc:
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case LibFunc::truncf:
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case LibFunc::truncl:
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return checkUnaryFloatSignature(*CI, Intrinsic::trunc);
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case LibFunc::rint:
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case LibFunc::rintf:
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case LibFunc::rintl:
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return checkUnaryFloatSignature(*CI, Intrinsic::rint);
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case LibFunc::nearbyint:
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case LibFunc::nearbyintf:
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case LibFunc::nearbyintl:
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return checkUnaryFloatSignature(*CI, Intrinsic::nearbyint);
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case LibFunc::round:
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case LibFunc::roundf:
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case LibFunc::roundl:
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return checkUnaryFloatSignature(*CI, Intrinsic::round);
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case LibFunc::pow:
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case LibFunc::powf:
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case LibFunc::powl:
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return checkBinaryFloatSignature(*CI, Intrinsic::pow);
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}
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return Intrinsic::not_intrinsic;
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}
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