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