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llvm-project/llvm/lib/IR/AutoUpgrade.cpp

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//===-- AutoUpgrade.cpp - Implement auto-upgrade helper functions ---------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the auto-upgrade helper functions.
// This is where deprecated IR intrinsics and other IR features are updated to
// current specifications.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/AutoUpgrade.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/CallSite.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Regex.h"
#include <cstring>
using namespace llvm;
static void rename(GlobalValue *GV) { GV->setName(GV->getName() + ".old"); }
// Upgrade the declarations of the SSE4.1 functions whose arguments have
// changed their type from v4f32 to v2i64.
static bool UpgradeSSE41Function(Function* F, Intrinsic::ID IID,
Function *&NewFn) {
// Check whether this is an old version of the function, which received
// v4f32 arguments.
Type *Arg0Type = F->getFunctionType()->getParamType(0);
if (Arg0Type != VectorType::get(Type::getFloatTy(F->getContext()), 4))
return false;
// Yes, it's old, replace it with new version.
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(), IID);
return true;
}
// Upgrade the declarations of intrinsic functions whose 8-bit immediate mask
// arguments have changed their type from i32 to i8.
static bool UpgradeX86IntrinsicsWith8BitMask(Function *F, Intrinsic::ID IID,
Function *&NewFn) {
// Check that the last argument is an i32.
Type *LastArgType = F->getFunctionType()->getParamType(
F->getFunctionType()->getNumParams() - 1);
if (!LastArgType->isIntegerTy(32))
return false;
// Move this function aside and map down.
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(), IID);
return true;
}
static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
assert(F && "Illegal to upgrade a non-existent Function.");
// Quickly eliminate it, if it's not a candidate.
StringRef Name = F->getName();
if (Name.size() <= 8 || !Name.startswith("llvm."))
return false;
Name = Name.substr(5); // Strip off "llvm."
switch (Name[0]) {
default: break;
case 'a': {
if (Name.startswith("arm.neon.vclz")) {
Type* args[2] = {
F->arg_begin()->getType(),
Type::getInt1Ty(F->getContext())
};
// Can't use Intrinsic::getDeclaration here as it adds a ".i1" to
// the end of the name. Change name from llvm.arm.neon.vclz.* to
// llvm.ctlz.*
FunctionType* fType = FunctionType::get(F->getReturnType(), args, false);
NewFn = Function::Create(fType, F->getLinkage(),
"llvm.ctlz." + Name.substr(14), F->getParent());
return true;
}
if (Name.startswith("arm.neon.vcnt")) {
NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::ctpop,
F->arg_begin()->getType());
return true;
}
Regex vldRegex("^arm\\.neon\\.vld([1234]|[234]lane)\\.v[a-z0-9]*$");
if (vldRegex.match(Name)) {
auto fArgs = F->getFunctionType()->params();
SmallVector<Type *, 4> Tys(fArgs.begin(), fArgs.end());
// Can't use Intrinsic::getDeclaration here as the return types might
// then only be structurally equal.
FunctionType* fType = FunctionType::get(F->getReturnType(), Tys, false);
NewFn = Function::Create(fType, F->getLinkage(),
"llvm." + Name + ".p0i8", F->getParent());
return true;
}
Regex vstRegex("^arm\\.neon\\.vst([1234]|[234]lane)\\.v[a-z0-9]*$");
if (vstRegex.match(Name)) {
static const Intrinsic::ID StoreInts[] = {Intrinsic::arm_neon_vst1,
Intrinsic::arm_neon_vst2,
Intrinsic::arm_neon_vst3,
Intrinsic::arm_neon_vst4};
static const Intrinsic::ID StoreLaneInts[] = {
Intrinsic::arm_neon_vst2lane, Intrinsic::arm_neon_vst3lane,
Intrinsic::arm_neon_vst4lane
};
auto fArgs = F->getFunctionType()->params();
Type *Tys[] = {fArgs[0], fArgs[1]};
if (Name.find("lane") == StringRef::npos)
NewFn = Intrinsic::getDeclaration(F->getParent(),
StoreInts[fArgs.size() - 3], Tys);
else
NewFn = Intrinsic::getDeclaration(F->getParent(),
StoreLaneInts[fArgs.size() - 5], Tys);
return true;
}
if (Name == "aarch64.thread.pointer" || Name == "arm.thread.pointer") {
NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::thread_pointer);
return true;
}
break;
}
case 'c': {
if (Name.startswith("ctlz.") && F->arg_size() == 1) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::ctlz,
F->arg_begin()->getType());
return true;
}
if (Name.startswith("cttz.") && F->arg_size() == 1) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::cttz,
F->arg_begin()->getType());
return true;
}
break;
}
case 'i': {
if (Name.startswith("invariant.start")) {
auto Args = F->getFunctionType()->params();
Type* ObjectPtr[1] = {Args[1]};
if (F->getName() !=
Intrinsic::getName(Intrinsic::invariant_start, ObjectPtr)) {
rename(F);
NewFn = Intrinsic::getDeclaration(
F->getParent(), Intrinsic::invariant_start, ObjectPtr);
return true;
}
}
if (Name.startswith("invariant.end")) {
auto Args = F->getFunctionType()->params();
Type* ObjectPtr[1] = {Args[2]};
if (F->getName() !=
Intrinsic::getName(Intrinsic::invariant_end, ObjectPtr)) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(),
Intrinsic::invariant_end, ObjectPtr);
return true;
}
}
break;
}
case 'm': {
if (Name.startswith("masked.load.")) {
Type *Tys[] = { F->getReturnType(), F->arg_begin()->getType() };
if (F->getName() != Intrinsic::getName(Intrinsic::masked_load, Tys)) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(),
Intrinsic::masked_load,
Tys);
return true;
}
}
if (Name.startswith("masked.store.")) {
auto Args = F->getFunctionType()->params();
Type *Tys[] = { Args[0], Args[1] };
if (F->getName() != Intrinsic::getName(Intrinsic::masked_store, Tys)) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(),
Intrinsic::masked_store,
Tys);
return true;
}
}
break;
}
case 'o':
// We only need to change the name to match the mangling including the
// address space.
if (F->arg_size() == 2 && Name.startswith("objectsize.")) {
Type *Tys[2] = { F->getReturnType(), F->arg_begin()->getType() };
if (F->getName() != Intrinsic::getName(Intrinsic::objectsize, Tys)) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(),
Intrinsic::objectsize, Tys);
return true;
}
}
break;
case 's':
if (Name == "stackprotectorcheck") {
NewFn = nullptr;
return true;
}
break;
case 'x': {
bool IsX86 = Name.startswith("x86.");
if (IsX86)
Name = Name.substr(4);
// All of the intrinsics matches below should be marked with which llvm
// version started autoupgrading them. At some point in the future we would
// like to use this information to remove upgrade code for some older
// intrinsics. It is currently undecided how we will determine that future
// point.
if (IsX86 &&
(Name.startswith("sse2.pcmpeq.") || // Added in 3.1
Name.startswith("sse2.pcmpgt.") || // Added in 3.1
Name.startswith("avx2.pcmpeq.") || // Added in 3.1
Name.startswith("avx2.pcmpgt.") || // Added in 3.1
Name.startswith("avx512.mask.pcmpeq.") || // Added in 3.9
Name.startswith("avx512.mask.pcmpgt.") || // Added in 3.9
Name == "sse.add.ss" || // Added in 4.0
Name == "sse2.add.sd" || // Added in 4.0
Name == "sse.sub.ss" || // Added in 4.0
Name == "sse2.sub.sd" || // Added in 4.0
Name == "sse.mul.ss" || // Added in 4.0
Name == "sse2.mul.sd" || // Added in 4.0
Name == "sse.div.ss" || // Added in 4.0
Name == "sse2.div.sd" || // Added in 4.0
Name == "sse41.pmaxsb" || // Added in 3.9
Name == "sse2.pmaxs.w" || // Added in 3.9
Name == "sse41.pmaxsd" || // Added in 3.9
Name == "sse2.pmaxu.b" || // Added in 3.9
Name == "sse41.pmaxuw" || // Added in 3.9
Name == "sse41.pmaxud" || // Added in 3.9
Name == "sse41.pminsb" || // Added in 3.9
Name == "sse2.pmins.w" || // Added in 3.9
Name == "sse41.pminsd" || // Added in 3.9
Name == "sse2.pminu.b" || // Added in 3.9
Name == "sse41.pminuw" || // Added in 3.9
Name == "sse41.pminud" || // Added in 3.9
Name == "avx512.mask.pshuf.b.128" || // Added in 4.0
Name == "avx512.mask.pshuf.b.256" || // Added in 4.0
Name.startswith("avx2.pmax") || // Added in 3.9
Name.startswith("avx2.pmin") || // Added in 3.9
Name.startswith("avx512.mask.pmax") || // Added in 4.0
Name.startswith("avx512.mask.pmin") || // Added in 4.0
Name.startswith("avx2.vbroadcast") || // Added in 3.8
Name.startswith("avx2.pbroadcast") || // Added in 3.8
Name.startswith("avx.vpermil.") || // Added in 3.1
Name.startswith("sse2.pshuf") || // Added in 3.9
Name.startswith("avx512.pbroadcast") || // Added in 3.9
Name.startswith("avx512.mask.broadcast.s") || // Added in 3.9
Name.startswith("avx512.mask.movddup") || // Added in 3.9
Name.startswith("avx512.mask.movshdup") || // Added in 3.9
Name.startswith("avx512.mask.movsldup") || // Added in 3.9
Name.startswith("avx512.mask.pshuf.d.") || // Added in 3.9
Name.startswith("avx512.mask.pshufl.w.") || // Added in 3.9
Name.startswith("avx512.mask.pshufh.w.") || // Added in 3.9
Name.startswith("avx512.mask.shuf.p") || // Added in 4.0
Name.startswith("avx512.mask.vpermil.p") || // Added in 3.9
Name.startswith("avx512.mask.perm.df.") || // Added in 3.9
Name.startswith("avx512.mask.perm.di.") || // Added in 3.9
Name.startswith("avx512.mask.punpckl") || // Added in 3.9
Name.startswith("avx512.mask.punpckh") || // Added in 3.9
Name.startswith("avx512.mask.unpckl.") || // Added in 3.9
Name.startswith("avx512.mask.unpckh.") || // Added in 3.9
Name.startswith("avx512.mask.pand.") || // Added in 3.9
Name.startswith("avx512.mask.pandn.") || // Added in 3.9
Name.startswith("avx512.mask.por.") || // Added in 3.9
Name.startswith("avx512.mask.pxor.") || // Added in 3.9
Name.startswith("avx512.mask.and.") || // Added in 3.9
Name.startswith("avx512.mask.andn.") || // Added in 3.9
Name.startswith("avx512.mask.or.") || // Added in 3.9
Name.startswith("avx512.mask.xor.") || // Added in 3.9
Name.startswith("avx512.mask.padd.") || // Added in 4.0
Name.startswith("avx512.mask.psub.") || // Added in 4.0
Name.startswith("avx512.mask.pmull.") || // Added in 4.0
Name.startswith("avx512.mask.cvtdq2pd.") || // Added in 4.0
Name.startswith("avx512.mask.cvtudq2pd.") || // Added in 4.0
Name == "avx512.mask.add.pd.128" || // Added in 4.0
Name == "avx512.mask.add.pd.256" || // Added in 4.0
Name == "avx512.mask.add.ps.128" || // Added in 4.0
Name == "avx512.mask.add.ps.256" || // Added in 4.0
Name == "avx512.mask.div.pd.128" || // Added in 4.0
Name == "avx512.mask.div.pd.256" || // Added in 4.0
Name == "avx512.mask.div.ps.128" || // Added in 4.0
Name == "avx512.mask.div.ps.256" || // Added in 4.0
Name == "avx512.mask.mul.pd.128" || // Added in 4.0
Name == "avx512.mask.mul.pd.256" || // Added in 4.0
Name == "avx512.mask.mul.ps.128" || // Added in 4.0
Name == "avx512.mask.mul.ps.256" || // Added in 4.0
Name == "avx512.mask.sub.pd.128" || // Added in 4.0
Name == "avx512.mask.sub.pd.256" || // Added in 4.0
Name == "avx512.mask.sub.ps.128" || // Added in 4.0
Name == "avx512.mask.sub.ps.256" || // Added in 4.0
Name.startswith("avx512.mask.psll.d") || // Added in 4.0
Name.startswith("avx512.mask.psll.q") || // Added in 4.0
Name.startswith("avx512.mask.psll.w") || // Added in 4.0
Name.startswith("avx512.mask.psra.d") || // Added in 4.0
Name.startswith("avx512.mask.psra.q") || // Added in 4.0
Name.startswith("avx512.mask.psra.w") || // Added in 4.0
Name.startswith("avx512.mask.psrl.d") || // Added in 4.0
Name.startswith("avx512.mask.psrl.q") || // Added in 4.0
Name.startswith("avx512.mask.psrl.w") || // Added in 4.0
Name.startswith("avx512.mask.pslli") || // Added in 4.0
Name.startswith("avx512.mask.psrai") || // Added in 4.0
Name.startswith("avx512.mask.psrli") || // Added in 4.0
Name.startswith("avx512.mask.psllv") || // Added in 4.0
Name.startswith("avx512.mask.psrav") || // Added in 4.0
Name.startswith("avx512.mask.psrlv") || // Added in 4.0
Name.startswith("sse41.pmovsx") || // Added in 3.8
Name.startswith("sse41.pmovzx") || // Added in 3.9
Name.startswith("avx2.pmovsx") || // Added in 3.9
Name.startswith("avx2.pmovzx") || // Added in 3.9
Name.startswith("avx512.mask.pmovsx") || // Added in 4.0
Name.startswith("avx512.mask.pmovzx") || // Added in 4.0
Name == "sse2.cvtdq2pd" || // Added in 3.9
Name == "sse2.cvtps2pd" || // Added in 3.9
Name == "avx.cvtdq2.pd.256" || // Added in 3.9
Name == "avx.cvt.ps2.pd.256" || // Added in 3.9
Name.startswith("avx.vinsertf128.") || // Added in 3.7
Name == "avx2.vinserti128" || // Added in 3.7
Name.startswith("avx.vextractf128.") || // Added in 3.7
Name == "avx2.vextracti128" || // Added in 3.7
Name.startswith("sse4a.movnt.") || // Added in 3.9
Name.startswith("avx.movnt.") || // Added in 3.2
Name.startswith("avx512.storent.") || // Added in 3.9
Name == "sse2.storel.dq" || // Added in 3.9
Name.startswith("sse.storeu.") || // Added in 3.9
Name.startswith("sse2.storeu.") || // Added in 3.9
Name.startswith("avx.storeu.") || // Added in 3.9
Name.startswith("avx512.mask.storeu.") || // Added in 3.9
Name.startswith("avx512.mask.store.p") || // Added in 3.9
Name.startswith("avx512.mask.store.b.") || // Added in 3.9
Name.startswith("avx512.mask.store.w.") || // Added in 3.9
Name.startswith("avx512.mask.store.d.") || // Added in 3.9
Name.startswith("avx512.mask.store.q.") || // Added in 3.9
Name.startswith("avx512.mask.loadu.") || // Added in 3.9
Name.startswith("avx512.mask.load.") || // Added in 3.9
Name == "sse42.crc32.64.8" || // Added in 3.4
Name.startswith("avx.vbroadcast.s") || // Added in 3.5
Name.startswith("avx512.mask.palignr.") || // Added in 3.9
Name.startswith("avx512.mask.valign.") || // Added in 4.0
Name.startswith("sse2.psll.dq") || // Added in 3.7
Name.startswith("sse2.psrl.dq") || // Added in 3.7
Name.startswith("avx2.psll.dq") || // Added in 3.7
Name.startswith("avx2.psrl.dq") || // Added in 3.7
Name.startswith("avx512.psll.dq") || // Added in 3.9
Name.startswith("avx512.psrl.dq") || // Added in 3.9
Name == "sse41.pblendw" || // Added in 3.7
Name.startswith("sse41.blendp") || // Added in 3.7
Name.startswith("avx.blend.p") || // Added in 3.7
Name == "avx2.pblendw" || // Added in 3.7
Name.startswith("avx2.pblendd.") || // Added in 3.7
Name.startswith("avx.vbroadcastf128") || // Added in 4.0
Name == "avx2.vbroadcasti128" || // Added in 3.7
Name == "xop.vpcmov" || // Added in 3.8
Name.startswith("avx512.mask.move.s") || // Added in 4.0
(Name.startswith("xop.vpcom") && // Added in 3.2
F->arg_size() == 2))) {
NewFn = nullptr;
return true;
}
// SSE4.1 ptest functions may have an old signature.
if (IsX86 && Name.startswith("sse41.ptest")) { // Added in 3.2
if (Name.substr(11) == "c")
return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestc, NewFn);
if (Name.substr(11) == "z")
return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestz, NewFn);
if (Name.substr(11) == "nzc")
return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestnzc, NewFn);
}
// Several blend and other instructions with masks used the wrong number of
// bits.
if (IsX86 && Name == "sse41.insertps") // Added in 3.6
return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_insertps,
NewFn);
if (IsX86 && Name == "sse41.dppd") // Added in 3.6
return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_dppd,
NewFn);
if (IsX86 && Name == "sse41.dpps") // Added in 3.6
return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_dpps,
NewFn);
if (IsX86 && Name == "sse41.mpsadbw") // Added in 3.6
return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_mpsadbw,
NewFn);
if (IsX86 && Name == "avx.dp.ps.256") // Added in 3.6
return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_avx_dp_ps_256,
NewFn);
if (IsX86 && Name == "avx2.mpsadbw") // Added in 3.6
return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_avx2_mpsadbw,
NewFn);
// frcz.ss/sd may need to have an argument dropped. Added in 3.2
if (IsX86 && Name.startswith("xop.vfrcz.ss") && F->arg_size() == 2) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(),
Intrinsic::x86_xop_vfrcz_ss);
return true;
}
if (IsX86 && Name.startswith("xop.vfrcz.sd") && F->arg_size() == 2) {
rename(F);
NewFn = Intrinsic::getDeclaration(F->getParent(),
Intrinsic::x86_xop_vfrcz_sd);
return true;
}
// Upgrade any XOP PERMIL2 index operand still using a float/double vector.
if (IsX86 && Name.startswith("xop.vpermil2")) { // Added in 3.9
auto Params = F->getFunctionType()->params();
auto Idx = Params[2];
if (Idx->getScalarType()->isFloatingPointTy()) {
rename(F);
unsigned IdxSize = Idx->getPrimitiveSizeInBits();
unsigned EltSize = Idx->getScalarSizeInBits();
Intrinsic::ID Permil2ID;
if (EltSize == 64 && IdxSize == 128)
Permil2ID = Intrinsic::x86_xop_vpermil2pd;
else if (EltSize == 32 && IdxSize == 128)
Permil2ID = Intrinsic::x86_xop_vpermil2ps;
else if (EltSize == 64 && IdxSize == 256)
Permil2ID = Intrinsic::x86_xop_vpermil2pd_256;
else
Permil2ID = Intrinsic::x86_xop_vpermil2ps_256;
NewFn = Intrinsic::getDeclaration(F->getParent(), Permil2ID);
return true;
}
}
break;
}
}
// This may not belong here. This function is effectively being overloaded
// to both detect an intrinsic which needs upgrading, and to provide the
// upgraded form of the intrinsic. We should perhaps have two separate
// functions for this.
return false;
}
bool llvm::UpgradeIntrinsicFunction(Function *F, Function *&NewFn) {
NewFn = nullptr;
bool Upgraded = UpgradeIntrinsicFunction1(F, NewFn);
assert(F != NewFn && "Intrinsic function upgraded to the same function");
// Upgrade intrinsic attributes. This does not change the function.
if (NewFn)
F = NewFn;
if (Intrinsic::ID id = F->getIntrinsicID())
F->setAttributes(Intrinsic::getAttributes(F->getContext(), id));
return Upgraded;
}
bool llvm::UpgradeGlobalVariable(GlobalVariable *GV) {
// Nothing to do yet.
return false;
}
// Handles upgrading SSE2/AVX2/AVX512BW PSLLDQ intrinsics by converting them
// to byte shuffles.
static Value *UpgradeX86PSLLDQIntrinsics(IRBuilder<> &Builder,
Value *Op, unsigned Shift) {
Type *ResultTy = Op->getType();
unsigned NumElts = ResultTy->getVectorNumElements() * 8;
// Bitcast from a 64-bit element type to a byte element type.
Type *VecTy = VectorType::get(Builder.getInt8Ty(), NumElts);
Op = Builder.CreateBitCast(Op, VecTy, "cast");
// We'll be shuffling in zeroes.
Value *Res = Constant::getNullValue(VecTy);
// If shift is less than 16, emit a shuffle to move the bytes. Otherwise,
// we'll just return the zero vector.
if (Shift < 16) {
uint32_t Idxs[64];
// 256/512-bit version is split into 2/4 16-byte lanes.
for (unsigned l = 0; l != NumElts; l += 16)
for (unsigned i = 0; i != 16; ++i) {
unsigned Idx = NumElts + i - Shift;
if (Idx < NumElts)
Idx -= NumElts - 16; // end of lane, switch operand.
Idxs[l + i] = Idx + l;
}
Res = Builder.CreateShuffleVector(Res, Op, makeArrayRef(Idxs, NumElts));
}
// Bitcast back to a 64-bit element type.
return Builder.CreateBitCast(Res, ResultTy, "cast");
}
// Handles upgrading SSE2/AVX2/AVX512BW PSRLDQ intrinsics by converting them
// to byte shuffles.
static Value *UpgradeX86PSRLDQIntrinsics(IRBuilder<> &Builder, Value *Op,
unsigned Shift) {
Type *ResultTy = Op->getType();
unsigned NumElts = ResultTy->getVectorNumElements() * 8;
// Bitcast from a 64-bit element type to a byte element type.
Type *VecTy = VectorType::get(Builder.getInt8Ty(), NumElts);
Op = Builder.CreateBitCast(Op, VecTy, "cast");
// We'll be shuffling in zeroes.
Value *Res = Constant::getNullValue(VecTy);
// If shift is less than 16, emit a shuffle to move the bytes. Otherwise,
// we'll just return the zero vector.
if (Shift < 16) {
uint32_t Idxs[64];
// 256/512-bit version is split into 2/4 16-byte lanes.
for (unsigned l = 0; l != NumElts; l += 16)
for (unsigned i = 0; i != 16; ++i) {
unsigned Idx = i + Shift;
if (Idx >= 16)
Idx += NumElts - 16; // end of lane, switch operand.
Idxs[l + i] = Idx + l;
}
Res = Builder.CreateShuffleVector(Op, Res, makeArrayRef(Idxs, NumElts));
}
// Bitcast back to a 64-bit element type.
return Builder.CreateBitCast(Res, ResultTy, "cast");
}
static Value *getX86MaskVec(IRBuilder<> &Builder, Value *Mask,
unsigned NumElts) {
llvm::VectorType *MaskTy = llvm::VectorType::get(Builder.getInt1Ty(),
cast<IntegerType>(Mask->getType())->getBitWidth());
Mask = Builder.CreateBitCast(Mask, MaskTy);
// If we have less than 8 elements, then the starting mask was an i8 and
// we need to extract down to the right number of elements.
if (NumElts < 8) {
uint32_t Indices[4];
for (unsigned i = 0; i != NumElts; ++i)
Indices[i] = i;
Mask = Builder.CreateShuffleVector(Mask, Mask,
makeArrayRef(Indices, NumElts),
"extract");
}
return Mask;
}
static Value *EmitX86Select(IRBuilder<> &Builder, Value *Mask,
Value *Op0, Value *Op1) {
// If the mask is all ones just emit the align operation.
if (const auto *C = dyn_cast<Constant>(Mask))
if (C->isAllOnesValue())
return Op0;
Mask = getX86MaskVec(Builder, Mask, Op0->getType()->getVectorNumElements());
return Builder.CreateSelect(Mask, Op0, Op1);
}
// Handle autoupgrade for masked PALIGNR and VALIGND/Q intrinsics.
// PALIGNR handles large immediates by shifting while VALIGN masks the immediate
// so we need to handle both cases. VALIGN also doesn't have 128-bit lanes.
static Value *UpgradeX86ALIGNIntrinsics(IRBuilder<> &Builder, Value *Op0,
Value *Op1, Value *Shift,
Value *Passthru, Value *Mask,
bool IsVALIGN) {
unsigned ShiftVal = cast<llvm::ConstantInt>(Shift)->getZExtValue();
unsigned NumElts = Op0->getType()->getVectorNumElements();
assert((IsVALIGN || NumElts % 16 == 0) && "Illegal NumElts for PALIGNR!");
assert((!IsVALIGN || NumElts <= 16) && "NumElts too large for VALIGN!");
assert(isPowerOf2_32(NumElts) && "NumElts not a power of 2!");
// Mask the immediate for VALIGN.
if (IsVALIGN)
ShiftVal &= (NumElts - 1);
// If palignr is shifting the pair of vectors more than the size of two
// lanes, emit zero.
if (ShiftVal >= 32)
return llvm::Constant::getNullValue(Op0->getType());
// If palignr is shifting the pair of input vectors more than one lane,
// but less than two lanes, convert to shifting in zeroes.
if (ShiftVal > 16) {
ShiftVal -= 16;
Op1 = Op0;
Op0 = llvm::Constant::getNullValue(Op0->getType());
}
uint32_t Indices[64];
// 256-bit palignr operates on 128-bit lanes so we need to handle that
for (unsigned l = 0; l < NumElts; l += 16) {
for (unsigned i = 0; i != 16; ++i) {
unsigned Idx = ShiftVal + i;
if (!IsVALIGN && Idx >= 16) // Disable wrap for VALIGN.
Idx += NumElts - 16; // End of lane, switch operand.
Indices[l + i] = Idx + l;
}
}
Value *Align = Builder.CreateShuffleVector(Op1, Op0,
makeArrayRef(Indices, NumElts),
"palignr");
return EmitX86Select(Builder, Mask, Align, Passthru);
}
static Value *UpgradeMaskedStore(IRBuilder<> &Builder,
Value *Ptr, Value *Data, Value *Mask,
bool Aligned) {
// Cast the pointer to the right type.
Ptr = Builder.CreateBitCast(Ptr,
llvm::PointerType::getUnqual(Data->getType()));
unsigned Align =
Aligned ? cast<VectorType>(Data->getType())->getBitWidth() / 8 : 1;
// If the mask is all ones just emit a regular store.
if (const auto *C = dyn_cast<Constant>(Mask))
if (C->isAllOnesValue())
return Builder.CreateAlignedStore(Data, Ptr, Align);
// Convert the mask from an integer type to a vector of i1.
unsigned NumElts = Data->getType()->getVectorNumElements();
Mask = getX86MaskVec(Builder, Mask, NumElts);
return Builder.CreateMaskedStore(Data, Ptr, Align, Mask);
}
static Value *UpgradeMaskedLoad(IRBuilder<> &Builder,
Value *Ptr, Value *Passthru, Value *Mask,
bool Aligned) {
// Cast the pointer to the right type.
Ptr = Builder.CreateBitCast(Ptr,
llvm::PointerType::getUnqual(Passthru->getType()));
unsigned Align =
Aligned ? cast<VectorType>(Passthru->getType())->getBitWidth() / 8 : 1;
// If the mask is all ones just emit a regular store.
if (const auto *C = dyn_cast<Constant>(Mask))
if (C->isAllOnesValue())
return Builder.CreateAlignedLoad(Ptr, Align);
// Convert the mask from an integer type to a vector of i1.
unsigned NumElts = Passthru->getType()->getVectorNumElements();
Mask = getX86MaskVec(Builder, Mask, NumElts);
return Builder.CreateMaskedLoad(Ptr, Align, Mask, Passthru);
}
static Value *upgradeIntMinMax(IRBuilder<> &Builder, CallInst &CI,
ICmpInst::Predicate Pred) {
Value *Op0 = CI.getArgOperand(0);
Value *Op1 = CI.getArgOperand(1);
Value *Cmp = Builder.CreateICmp(Pred, Op0, Op1);
Value *Res = Builder.CreateSelect(Cmp, Op0, Op1);
if (CI.getNumArgOperands() == 4)
Res = EmitX86Select(Builder, CI.getArgOperand(3), Res, CI.getArgOperand(2));
return Res;
}
static Value *upgradeMaskedCompare(IRBuilder<> &Builder, CallInst &CI,
ICmpInst::Predicate Pred) {
Value *Op0 = CI.getArgOperand(0);
unsigned NumElts = Op0->getType()->getVectorNumElements();
Value *Cmp = Builder.CreateICmp(Pred, Op0, CI.getArgOperand(1));
Value *Mask = CI.getArgOperand(2);
const auto *C = dyn_cast<Constant>(Mask);
if (!C || !C->isAllOnesValue())
Cmp = Builder.CreateAnd(Cmp, getX86MaskVec(Builder, Mask, NumElts));
if (NumElts < 8) {
uint32_t Indices[8];
for (unsigned i = 0; i != NumElts; ++i)
Indices[i] = i;
for (unsigned i = NumElts; i != 8; ++i)
Indices[i] = NumElts + i % NumElts;
Cmp = Builder.CreateShuffleVector(Cmp,
Constant::getNullValue(Cmp->getType()),
Indices);
}
return Builder.CreateBitCast(Cmp, IntegerType::get(CI.getContext(),
std::max(NumElts, 8U)));
}
// Replace a masked intrinsic with an older unmasked intrinsic.
static Value *UpgradeX86MaskedShift(IRBuilder<> &Builder, CallInst &CI,
Intrinsic::ID IID) {
Function *F = CI.getCalledFunction();
Function *Intrin = Intrinsic::getDeclaration(F->getParent(), IID);
Value *Rep = Builder.CreateCall(Intrin,
{ CI.getArgOperand(0), CI.getArgOperand(1) });
return EmitX86Select(Builder, CI.getArgOperand(3), Rep, CI.getArgOperand(2));
}
static Value* upgradeMaskedMove(IRBuilder<> &Builder, CallInst &CI) {
Value* A = CI.getArgOperand(0);
Value* B = CI.getArgOperand(1);
Value* Src = CI.getArgOperand(2);
Value* Mask = CI.getArgOperand(3);
Value* AndNode = Builder.CreateAnd(Mask, APInt(8, 1));
Value* Cmp = Builder.CreateIsNotNull(AndNode);
Value* Extract1 = Builder.CreateExtractElement(B, (uint64_t)0);
Value* Extract2 = Builder.CreateExtractElement(Src, (uint64_t)0);
Value* Select = Builder.CreateSelect(Cmp, Extract1, Extract2);
return Builder.CreateInsertElement(A, Select, (uint64_t)0);
}
/// Upgrade a call to an old intrinsic. All argument and return casting must be
/// provided to seamlessly integrate with existing context.
void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
Function *F = CI->getCalledFunction();
LLVMContext &C = CI->getContext();
IRBuilder<> Builder(C);
Builder.SetInsertPoint(CI->getParent(), CI->getIterator());
assert(F && "Intrinsic call is not direct?");
if (!NewFn) {
// Get the Function's name.
StringRef Name = F->getName();
assert(Name.startswith("llvm.") && "Intrinsic doesn't start with 'llvm.'");
Name = Name.substr(5);
bool IsX86 = Name.startswith("x86.");
if (IsX86)
Name = Name.substr(4);
Value *Rep;
// Upgrade packed integer vector compare intrinsics to compare instructions.
if (IsX86 && (Name.startswith("sse2.pcmpeq.") ||
Name.startswith("avx2.pcmpeq."))) {
Rep = Builder.CreateICmpEQ(CI->getArgOperand(0), CI->getArgOperand(1),
"pcmpeq");
Rep = Builder.CreateSExt(Rep, CI->getType(), "");
} else if (IsX86 && (Name.startswith("sse2.pcmpgt.") ||
Name.startswith("avx2.pcmpgt."))) {
Rep = Builder.CreateICmpSGT(CI->getArgOperand(0), CI->getArgOperand(1),
"pcmpgt");
Rep = Builder.CreateSExt(Rep, CI->getType(), "");
} else if (IsX86 && (Name == "sse.add.ss" || Name == "sse2.add.sd")) {
Type *I32Ty = Type::getInt32Ty(C);
Value *Elt0 = Builder.CreateExtractElement(CI->getArgOperand(0),
ConstantInt::get(I32Ty, 0));
Value *Elt1 = Builder.CreateExtractElement(CI->getArgOperand(1),
ConstantInt::get(I32Ty, 0));
Rep = Builder.CreateInsertElement(CI->getArgOperand(0),
Builder.CreateFAdd(Elt0, Elt1),
ConstantInt::get(I32Ty, 0));
} else if (IsX86 && (Name == "sse.sub.ss" || Name == "sse2.sub.sd")) {
Type *I32Ty = Type::getInt32Ty(C);
Value *Elt0 = Builder.CreateExtractElement(CI->getArgOperand(0),
ConstantInt::get(I32Ty, 0));
Value *Elt1 = Builder.CreateExtractElement(CI->getArgOperand(1),
ConstantInt::get(I32Ty, 0));
Rep = Builder.CreateInsertElement(CI->getArgOperand(0),
Builder.CreateFSub(Elt0, Elt1),
ConstantInt::get(I32Ty, 0));
} else if (IsX86 && (Name == "sse.mul.ss" || Name == "sse2.mul.sd")) {
Type *I32Ty = Type::getInt32Ty(C);
Value *Elt0 = Builder.CreateExtractElement(CI->getArgOperand(0),
ConstantInt::get(I32Ty, 0));
Value *Elt1 = Builder.CreateExtractElement(CI->getArgOperand(1),
ConstantInt::get(I32Ty, 0));
Rep = Builder.CreateInsertElement(CI->getArgOperand(0),
Builder.CreateFMul(Elt0, Elt1),
ConstantInt::get(I32Ty, 0));
} else if (IsX86 && (Name == "sse.div.ss" || Name == "sse2.div.sd")) {
Type *I32Ty = Type::getInt32Ty(C);
Value *Elt0 = Builder.CreateExtractElement(CI->getArgOperand(0),
ConstantInt::get(I32Ty, 0));
Value *Elt1 = Builder.CreateExtractElement(CI->getArgOperand(1),
ConstantInt::get(I32Ty, 0));
Rep = Builder.CreateInsertElement(CI->getArgOperand(0),
Builder.CreateFDiv(Elt0, Elt1),
ConstantInt::get(I32Ty, 0));
} else if (IsX86 && Name.startswith("avx512.mask.pcmpeq.")) {
Rep = upgradeMaskedCompare(Builder, *CI, ICmpInst::ICMP_EQ);
} else if (IsX86 && Name.startswith("avx512.mask.pcmpgt.")) {
Rep = upgradeMaskedCompare(Builder, *CI, ICmpInst::ICMP_SGT);
} else if (IsX86 && (Name == "sse41.pmaxsb" ||
Name == "sse2.pmaxs.w" ||
Name == "sse41.pmaxsd" ||
Name.startswith("avx2.pmaxs") ||
Name.startswith("avx512.mask.pmaxs"))) {
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_SGT);
} else if (IsX86 && (Name == "sse2.pmaxu.b" ||
Name == "sse41.pmaxuw" ||
Name == "sse41.pmaxud" ||
Name.startswith("avx2.pmaxu") ||
Name.startswith("avx512.mask.pmaxu"))) {
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_UGT);
} else if (IsX86 && (Name == "sse41.pminsb" ||
Name == "sse2.pmins.w" ||
Name == "sse41.pminsd" ||
Name.startswith("avx2.pmins") ||
Name.startswith("avx512.mask.pmins"))) {
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_SLT);
} else if (IsX86 && (Name == "sse2.pminu.b" ||
Name == "sse41.pminuw" ||
Name == "sse41.pminud" ||
Name.startswith("avx2.pminu") ||
Name.startswith("avx512.mask.pminu"))) {
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_ULT);
} else if (IsX86 && (Name == "sse2.cvtdq2pd" ||
Name == "sse2.cvtps2pd" ||
Name == "avx.cvtdq2.pd.256" ||
Name == "avx.cvt.ps2.pd.256" ||
Name.startswith("avx512.mask.cvtdq2pd.") ||
Name.startswith("avx512.mask.cvtudq2pd."))) {
// Lossless i32/float to double conversion.
// Extract the bottom elements if necessary and convert to double vector.
Value *Src = CI->getArgOperand(0);
VectorType *SrcTy = cast<VectorType>(Src->getType());
VectorType *DstTy = cast<VectorType>(CI->getType());
Rep = CI->getArgOperand(0);
unsigned NumDstElts = DstTy->getNumElements();
if (NumDstElts < SrcTy->getNumElements()) {
assert(NumDstElts == 2 && "Unexpected vector size");
uint32_t ShuffleMask[2] = { 0, 1 };
Rep = Builder.CreateShuffleVector(Rep, UndefValue::get(SrcTy),
ShuffleMask);
}
bool SInt2Double = (StringRef::npos != Name.find("cvtdq2"));
bool UInt2Double = (StringRef::npos != Name.find("cvtudq2"));
if (SInt2Double)
Rep = Builder.CreateSIToFP(Rep, DstTy, "cvtdq2pd");
else if (UInt2Double)
Rep = Builder.CreateUIToFP(Rep, DstTy, "cvtudq2pd");
else
Rep = Builder.CreateFPExt(Rep, DstTy, "cvtps2pd");
if (CI->getNumArgOperands() == 3)
Rep = EmitX86Select(Builder, CI->getArgOperand(2), Rep,
CI->getArgOperand(1));
} else if (IsX86 && Name.startswith("sse4a.movnt.")) {
Module *M = F->getParent();
SmallVector<Metadata *, 1> Elts;
Elts.push_back(
ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(C), 1)));
MDNode *Node = MDNode::get(C, Elts);
Value *Arg0 = CI->getArgOperand(0);
Value *Arg1 = CI->getArgOperand(1);
// Nontemporal (unaligned) store of the 0'th element of the float/double
// vector.
Type *SrcEltTy = cast<VectorType>(Arg1->getType())->getElementType();
PointerType *EltPtrTy = PointerType::getUnqual(SrcEltTy);
Value *Addr = Builder.CreateBitCast(Arg0, EltPtrTy, "cast");
Value *Extract =
Builder.CreateExtractElement(Arg1, (uint64_t)0, "extractelement");
StoreInst *SI = Builder.CreateAlignedStore(Extract, Addr, 1);
SI->setMetadata(M->getMDKindID("nontemporal"), Node);
// Remove intrinsic.
CI->eraseFromParent();
return;
} else if (IsX86 && (Name.startswith("avx.movnt.") ||
Name.startswith("avx512.storent."))) {
Module *M = F->getParent();
SmallVector<Metadata *, 1> Elts;
Elts.push_back(
ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(C), 1)));
MDNode *Node = MDNode::get(C, Elts);
Value *Arg0 = CI->getArgOperand(0);
Value *Arg1 = CI->getArgOperand(1);
// Convert the type of the pointer to a pointer to the stored type.
Value *BC = Builder.CreateBitCast(Arg0,
PointerType::getUnqual(Arg1->getType()),
"cast");
VectorType *VTy = cast<VectorType>(Arg1->getType());
StoreInst *SI = Builder.CreateAlignedStore(Arg1, BC,
VTy->getBitWidth() / 8);
SI->setMetadata(M->getMDKindID("nontemporal"), Node);
// Remove intrinsic.
CI->eraseFromParent();
return;
} else if (IsX86 && Name == "sse2.storel.dq") {
Value *Arg0 = CI->getArgOperand(0);
Value *Arg1 = CI->getArgOperand(1);
Type *NewVecTy = VectorType::get(Type::getInt64Ty(C), 2);
Value *BC0 = Builder.CreateBitCast(Arg1, NewVecTy, "cast");
Value *Elt = Builder.CreateExtractElement(BC0, (uint64_t)0);
Value *BC = Builder.CreateBitCast(Arg0,
PointerType::getUnqual(Elt->getType()),
"cast");
Builder.CreateAlignedStore(Elt, BC, 1);
// Remove intrinsic.
CI->eraseFromParent();
return;
} else if (IsX86 && (Name.startswith("sse.storeu.") ||
Name.startswith("sse2.storeu.") ||
Name.startswith("avx.storeu."))) {
Value *Arg0 = CI->getArgOperand(0);
Value *Arg1 = CI->getArgOperand(1);
Arg0 = Builder.CreateBitCast(Arg0,
PointerType::getUnqual(Arg1->getType()),
"cast");
Builder.CreateAlignedStore(Arg1, Arg0, 1);
// Remove intrinsic.
CI->eraseFromParent();
return;
} else if (IsX86 && (Name.startswith("avx512.mask.storeu."))) {
UpgradeMaskedStore(Builder, CI->getArgOperand(0), CI->getArgOperand(1),
CI->getArgOperand(2), /*Aligned*/false);
// Remove intrinsic.
CI->eraseFromParent();
return;
} else if (IsX86 && (Name.startswith("avx512.mask.store."))) {
UpgradeMaskedStore(Builder, CI->getArgOperand(0), CI->getArgOperand(1),
CI->getArgOperand(2), /*Aligned*/true);
// Remove intrinsic.
CI->eraseFromParent();
return;
} else if (IsX86 && (Name.startswith("avx512.mask.loadu."))) {
Rep = UpgradeMaskedLoad(Builder, CI->getArgOperand(0),
CI->getArgOperand(1), CI->getArgOperand(2),
/*Aligned*/false);
} else if (IsX86 && (Name.startswith("avx512.mask.load."))) {
Rep = UpgradeMaskedLoad(Builder, CI->getArgOperand(0),
CI->getArgOperand(1),CI->getArgOperand(2),
/*Aligned*/true);
} else if (IsX86 && Name.startswith("xop.vpcom")) {
Intrinsic::ID intID;
if (Name.endswith("ub"))
intID = Intrinsic::x86_xop_vpcomub;
else if (Name.endswith("uw"))
intID = Intrinsic::x86_xop_vpcomuw;
else if (Name.endswith("ud"))
intID = Intrinsic::x86_xop_vpcomud;
else if (Name.endswith("uq"))
intID = Intrinsic::x86_xop_vpcomuq;
else if (Name.endswith("b"))
intID = Intrinsic::x86_xop_vpcomb;
else if (Name.endswith("w"))
intID = Intrinsic::x86_xop_vpcomw;
else if (Name.endswith("d"))
intID = Intrinsic::x86_xop_vpcomd;
else if (Name.endswith("q"))
intID = Intrinsic::x86_xop_vpcomq;
else
llvm_unreachable("Unknown suffix");
Name = Name.substr(9); // strip off "xop.vpcom"
unsigned Imm;
if (Name.startswith("lt"))
Imm = 0;
else if (Name.startswith("le"))
Imm = 1;
else if (Name.startswith("gt"))
Imm = 2;
else if (Name.startswith("ge"))
Imm = 3;
else if (Name.startswith("eq"))
Imm = 4;
else if (Name.startswith("ne"))
Imm = 5;
else if (Name.startswith("false"))
Imm = 6;
else if (Name.startswith("true"))
Imm = 7;
else
llvm_unreachable("Unknown condition");
Function *VPCOM = Intrinsic::getDeclaration(F->getParent(), intID);
Rep =
Builder.CreateCall(VPCOM, {CI->getArgOperand(0), CI->getArgOperand(1),
Builder.getInt8(Imm)});
} else if (IsX86 && Name == "xop.vpcmov") {
Value *Arg0 = CI->getArgOperand(0);
Value *Arg1 = CI->getArgOperand(1);
Value *Sel = CI->getArgOperand(2);
unsigned NumElts = CI->getType()->getVectorNumElements();
Constant *MinusOne = ConstantVector::getSplat(NumElts, Builder.getInt64(-1));
Value *NotSel = Builder.CreateXor(Sel, MinusOne);
Value *Sel0 = Builder.CreateAnd(Arg0, Sel);
Value *Sel1 = Builder.CreateAnd(Arg1, NotSel);
Rep = Builder.CreateOr(Sel0, Sel1);
} else if (IsX86 && Name == "sse42.crc32.64.8") {
Function *CRC32 = Intrinsic::getDeclaration(F->getParent(),
Intrinsic::x86_sse42_crc32_32_8);
Value *Trunc0 = Builder.CreateTrunc(CI->getArgOperand(0), Type::getInt32Ty(C));
Rep = Builder.CreateCall(CRC32, {Trunc0, CI->getArgOperand(1)});
Rep = Builder.CreateZExt(Rep, CI->getType(), "");
} else if (IsX86 && Name.startswith("avx.vbroadcast.s")) {
// Replace broadcasts with a series of insertelements.
Type *VecTy = CI->getType();
Type *EltTy = VecTy->getVectorElementType();
unsigned EltNum = VecTy->getVectorNumElements();
Value *Cast = Builder.CreateBitCast(CI->getArgOperand(0),
EltTy->getPointerTo());
Value *Load = Builder.CreateLoad(EltTy, Cast);
Type *I32Ty = Type::getInt32Ty(C);
Rep = UndefValue::get(VecTy);
for (unsigned I = 0; I < EltNum; ++I)
Rep = Builder.CreateInsertElement(Rep, Load,
ConstantInt::get(I32Ty, I));
} else if (IsX86 && (Name.startswith("sse41.pmovsx") ||
Name.startswith("sse41.pmovzx") ||
Name.startswith("avx2.pmovsx") ||
Name.startswith("avx2.pmovzx") ||
Name.startswith("avx512.mask.pmovsx") ||
Name.startswith("avx512.mask.pmovzx"))) {
VectorType *SrcTy = cast<VectorType>(CI->getArgOperand(0)->getType());
VectorType *DstTy = cast<VectorType>(CI->getType());
unsigned NumDstElts = DstTy->getNumElements();
// Extract a subvector of the first NumDstElts lanes and sign/zero extend.
SmallVector<uint32_t, 8> ShuffleMask(NumDstElts);
for (unsigned i = 0; i != NumDstElts; ++i)
ShuffleMask[i] = i;
Value *SV = Builder.CreateShuffleVector(
CI->getArgOperand(0), UndefValue::get(SrcTy), ShuffleMask);
bool DoSext = (StringRef::npos != Name.find("pmovsx"));
Rep = DoSext ? Builder.CreateSExt(SV, DstTy)
: Builder.CreateZExt(SV, DstTy);
// If there are 3 arguments, it's a masked intrinsic so we need a select.
if (CI->getNumArgOperands() == 3)
Rep = EmitX86Select(Builder, CI->getArgOperand(2), Rep,
CI->getArgOperand(1));
} else if (IsX86 && (Name.startswith("avx.vbroadcastf128") ||
Name == "avx2.vbroadcasti128")) {
// Replace vbroadcastf128/vbroadcasti128 with a vector load+shuffle.
Type *EltTy = CI->getType()->getVectorElementType();
unsigned NumSrcElts = 128 / EltTy->getPrimitiveSizeInBits();
Type *VT = VectorType::get(EltTy, NumSrcElts);
Value *Op = Builder.CreatePointerCast(CI->getArgOperand(0),
PointerType::getUnqual(VT));
Value *Load = Builder.CreateAlignedLoad(Op, 1);
if (NumSrcElts == 2)
Rep = Builder.CreateShuffleVector(Load, UndefValue::get(Load->getType()),
{ 0, 1, 0, 1 });
else
Rep = Builder.CreateShuffleVector(Load, UndefValue::get(Load->getType()),
{ 0, 1, 2, 3, 0, 1, 2, 3 });
} else if (IsX86 && (Name.startswith("avx2.pbroadcast") ||
Name.startswith("avx2.vbroadcast") ||
Name.startswith("avx512.pbroadcast") ||
Name.startswith("avx512.mask.broadcast.s"))) {
// Replace vp?broadcasts with a vector shuffle.
Value *Op = CI->getArgOperand(0);
unsigned NumElts = CI->getType()->getVectorNumElements();
Type *MaskTy = VectorType::get(Type::getInt32Ty(C), NumElts);
Rep = Builder.CreateShuffleVector(Op, UndefValue::get(Op->getType()),
Constant::getNullValue(MaskTy));
if (CI->getNumArgOperands() == 3)
Rep = EmitX86Select(Builder, CI->getArgOperand(2), Rep,
CI->getArgOperand(1));
} else if (IsX86 && Name.startswith("avx512.mask.palignr.")) {
Rep = UpgradeX86ALIGNIntrinsics(Builder, CI->getArgOperand(0),
CI->getArgOperand(1),
CI->getArgOperand(2),
CI->getArgOperand(3),
CI->getArgOperand(4),
false);
} else if (IsX86 && Name.startswith("avx512.mask.valign.")) {
Rep = UpgradeX86ALIGNIntrinsics(Builder, CI->getArgOperand(0),
CI->getArgOperand(1),
CI->getArgOperand(2),
CI->getArgOperand(3),
CI->getArgOperand(4),
true);
} else if (IsX86 && (Name == "sse2.psll.dq" ||
Name == "avx2.psll.dq")) {
// 128/256-bit shift left specified in bits.
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
Rep = UpgradeX86PSLLDQIntrinsics(Builder, CI->getArgOperand(0),
Shift / 8); // Shift is in bits.
} else if (IsX86 && (Name == "sse2.psrl.dq" ||
Name == "avx2.psrl.dq")) {
// 128/256-bit shift right specified in bits.
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
Rep = UpgradeX86PSRLDQIntrinsics(Builder, CI->getArgOperand(0),
Shift / 8); // Shift is in bits.
} else if (IsX86 && (Name == "sse2.psll.dq.bs" ||
Name == "avx2.psll.dq.bs" ||
Name == "avx512.psll.dq.512")) {
// 128/256/512-bit shift left specified in bytes.
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
Rep = UpgradeX86PSLLDQIntrinsics(Builder, CI->getArgOperand(0), Shift);
} else if (IsX86 && (Name == "sse2.psrl.dq.bs" ||
Name == "avx2.psrl.dq.bs" ||
Name == "avx512.psrl.dq.512")) {
// 128/256/512-bit shift right specified in bytes.
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
Rep = UpgradeX86PSRLDQIntrinsics(Builder, CI->getArgOperand(0), Shift);
} else if (IsX86 && (Name == "sse41.pblendw" ||
Name.startswith("sse41.blendp") ||
Name.startswith("avx.blend.p") ||
Name == "avx2.pblendw" ||
Name.startswith("avx2.pblendd."))) {
Value *Op0 = CI->getArgOperand(0);
Value *Op1 = CI->getArgOperand(1);
unsigned Imm = cast <ConstantInt>(CI->getArgOperand(2))->getZExtValue();
VectorType *VecTy = cast<VectorType>(CI->getType());
unsigned NumElts = VecTy->getNumElements();
SmallVector<uint32_t, 16> Idxs(NumElts);
for (unsigned i = 0; i != NumElts; ++i)
Idxs[i] = ((Imm >> (i%8)) & 1) ? i + NumElts : i;
Rep = Builder.CreateShuffleVector(Op0, Op1, Idxs);
} else if (IsX86 && (Name.startswith("avx.vinsertf128.") ||
Name == "avx2.vinserti128")) {
Value *Op0 = CI->getArgOperand(0);
Value *Op1 = CI->getArgOperand(1);
unsigned Imm = cast<ConstantInt>(CI->getArgOperand(2))->getZExtValue();
VectorType *VecTy = cast<VectorType>(CI->getType());
unsigned NumElts = VecTy->getNumElements();
// Mask off the high bits of the immediate value; hardware ignores those.
Imm = Imm & 1;
// Extend the second operand into a vector that is twice as big.
Value *UndefV = UndefValue::get(Op1->getType());
SmallVector<uint32_t, 8> Idxs(NumElts);
for (unsigned i = 0; i != NumElts; ++i)
Idxs[i] = i;
Rep = Builder.CreateShuffleVector(Op1, UndefV, Idxs);
// Insert the second operand into the first operand.
// Note that there is no guarantee that instruction lowering will actually
// produce a vinsertf128 instruction for the created shuffles. In
// particular, the 0 immediate case involves no lane changes, so it can
// be handled as a blend.
// Example of shuffle mask for 32-bit elements:
// Imm = 1 <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 10, i32 11>
// Imm = 0 <i32 8, i32 9, i32 10, i32 11, i32 4, i32 5, i32 6, i32 7 >
// The low half of the result is either the low half of the 1st operand
// or the low half of the 2nd operand (the inserted vector).
for (unsigned i = 0; i != NumElts / 2; ++i)
Idxs[i] = Imm ? i : (i + NumElts);
// The high half of the result is either the low half of the 2nd operand
// (the inserted vector) or the high half of the 1st operand.
for (unsigned i = NumElts / 2; i != NumElts; ++i)
Idxs[i] = Imm ? (i + NumElts / 2) : i;
Rep = Builder.CreateShuffleVector(Op0, Rep, Idxs);
} else if (IsX86 && (Name.startswith("avx.vextractf128.") ||
Name == "avx2.vextracti128")) {
Value *Op0 = CI->getArgOperand(0);
unsigned Imm = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
VectorType *VecTy = cast<VectorType>(CI->getType());
unsigned NumElts = VecTy->getNumElements();
// Mask off the high bits of the immediate value; hardware ignores those.
Imm = Imm & 1;
// Get indexes for either the high half or low half of the input vector.
SmallVector<uint32_t, 4> Idxs(NumElts);
for (unsigned i = 0; i != NumElts; ++i) {
Idxs[i] = Imm ? (i + NumElts) : i;
}
Value *UndefV = UndefValue::get(Op0->getType());
Rep = Builder.CreateShuffleVector(Op0, UndefV, Idxs);
} else if (!IsX86 && Name == "stackprotectorcheck") {
Rep = nullptr;
} else if (IsX86 && (Name.startswith("avx512.mask.perm.df.") ||
Name.startswith("avx512.mask.perm.di."))) {
Value *Op0 = CI->getArgOperand(0);
unsigned Imm = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
VectorType *VecTy = cast<VectorType>(CI->getType());
unsigned NumElts = VecTy->getNumElements();
SmallVector<uint32_t, 8> Idxs(NumElts);
for (unsigned i = 0; i != NumElts; ++i)
Idxs[i] = (i & ~0x3) + ((Imm >> (2 * (i & 0x3))) & 3);
Rep = Builder.CreateShuffleVector(Op0, Op0, Idxs);
if (CI->getNumArgOperands() == 4)
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && (Name.startswith("avx.vpermil.") ||
Name == "sse2.pshuf.d" ||
Name.startswith("avx512.mask.vpermil.p") ||
Name.startswith("avx512.mask.pshuf.d."))) {
Value *Op0 = CI->getArgOperand(0);
unsigned Imm = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
VectorType *VecTy = cast<VectorType>(CI->getType());
unsigned NumElts = VecTy->getNumElements();
// Calculate the size of each index in the immediate.
unsigned IdxSize = 64 / VecTy->getScalarSizeInBits();
unsigned IdxMask = ((1 << IdxSize) - 1);
SmallVector<uint32_t, 8> Idxs(NumElts);
// Lookup the bits for this element, wrapping around the immediate every
// 8-bits. Elements are grouped into sets of 2 or 4 elements so we need
// to offset by the first index of each group.
for (unsigned i = 0; i != NumElts; ++i)
Idxs[i] = ((Imm >> ((i * IdxSize) % 8)) & IdxMask) | (i & ~IdxMask);
Rep = Builder.CreateShuffleVector(Op0, Op0, Idxs);
if (CI->getNumArgOperands() == 4)
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && (Name == "sse2.pshufl.w" ||
Name.startswith("avx512.mask.pshufl.w."))) {
Value *Op0 = CI->getArgOperand(0);
unsigned Imm = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
unsigned NumElts = CI->getType()->getVectorNumElements();
SmallVector<uint32_t, 16> Idxs(NumElts);
for (unsigned l = 0; l != NumElts; l += 8) {
for (unsigned i = 0; i != 4; ++i)
Idxs[i + l] = ((Imm >> (2 * i)) & 0x3) + l;
for (unsigned i = 4; i != 8; ++i)
Idxs[i + l] = i + l;
}
Rep = Builder.CreateShuffleVector(Op0, Op0, Idxs);
if (CI->getNumArgOperands() == 4)
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && (Name == "sse2.pshufh.w" ||
Name.startswith("avx512.mask.pshufh.w."))) {
Value *Op0 = CI->getArgOperand(0);
unsigned Imm = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
unsigned NumElts = CI->getType()->getVectorNumElements();
SmallVector<uint32_t, 16> Idxs(NumElts);
for (unsigned l = 0; l != NumElts; l += 8) {
for (unsigned i = 0; i != 4; ++i)
Idxs[i + l] = i + l;
for (unsigned i = 0; i != 4; ++i)
Idxs[i + l + 4] = ((Imm >> (2 * i)) & 0x3) + 4 + l;
}
Rep = Builder.CreateShuffleVector(Op0, Op0, Idxs);
if (CI->getNumArgOperands() == 4)
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.shuf.p")) {
Value *Op0 = CI->getArgOperand(0);
Value *Op1 = CI->getArgOperand(1);
unsigned Imm = cast<ConstantInt>(CI->getArgOperand(2))->getZExtValue();
unsigned NumElts = CI->getType()->getVectorNumElements();
unsigned NumLaneElts = 128/CI->getType()->getScalarSizeInBits();
unsigned HalfLaneElts = NumLaneElts / 2;
SmallVector<uint32_t, 16> Idxs(NumElts);
for (unsigned i = 0; i != NumElts; ++i) {
// Base index is the starting element of the lane.
Idxs[i] = i - (i % NumLaneElts);
// If we are half way through the lane switch to the other source.
if ((i % NumLaneElts) >= HalfLaneElts)
Idxs[i] += NumElts;
// Now select the specific element. By adding HalfLaneElts bits from
// the immediate. Wrapping around the immediate every 8-bits.
Idxs[i] += (Imm >> ((i * HalfLaneElts) % 8)) & ((1 << HalfLaneElts) - 1);
}
Rep = Builder.CreateShuffleVector(Op0, Op1, Idxs);
Rep = EmitX86Select(Builder, CI->getArgOperand(4), Rep,
CI->getArgOperand(3));
} else if (IsX86 && (Name.startswith("avx512.mask.movddup") ||
Name.startswith("avx512.mask.movshdup") ||
Name.startswith("avx512.mask.movsldup"))) {
Value *Op0 = CI->getArgOperand(0);
unsigned NumElts = CI->getType()->getVectorNumElements();
unsigned NumLaneElts = 128/CI->getType()->getScalarSizeInBits();
unsigned Offset = 0;
if (Name.startswith("avx512.mask.movshdup."))
Offset = 1;
SmallVector<uint32_t, 16> Idxs(NumElts);
for (unsigned l = 0; l != NumElts; l += NumLaneElts)
for (unsigned i = 0; i != NumLaneElts; i += 2) {
Idxs[i + l + 0] = i + l + Offset;
Idxs[i + l + 1] = i + l + Offset;
}
Rep = Builder.CreateShuffleVector(Op0, Op0, Idxs);
Rep = EmitX86Select(Builder, CI->getArgOperand(2), Rep,
CI->getArgOperand(1));
} else if (IsX86 && (Name.startswith("avx512.mask.punpckl") ||
Name.startswith("avx512.mask.unpckl."))) {
Value *Op0 = CI->getArgOperand(0);
Value *Op1 = CI->getArgOperand(1);
int NumElts = CI->getType()->getVectorNumElements();
int NumLaneElts = 128/CI->getType()->getScalarSizeInBits();
SmallVector<uint32_t, 64> Idxs(NumElts);
for (int l = 0; l != NumElts; l += NumLaneElts)
for (int i = 0; i != NumLaneElts; ++i)
Idxs[i + l] = l + (i / 2) + NumElts * (i % 2);
Rep = Builder.CreateShuffleVector(Op0, Op1, Idxs);
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && (Name.startswith("avx512.mask.punpckh") ||
Name.startswith("avx512.mask.unpckh."))) {
Value *Op0 = CI->getArgOperand(0);
Value *Op1 = CI->getArgOperand(1);
int NumElts = CI->getType()->getVectorNumElements();
int NumLaneElts = 128/CI->getType()->getScalarSizeInBits();
SmallVector<uint32_t, 64> Idxs(NumElts);
for (int l = 0; l != NumElts; l += NumLaneElts)
for (int i = 0; i != NumLaneElts; ++i)
Idxs[i + l] = (NumLaneElts / 2) + l + (i / 2) + NumElts * (i % 2);
Rep = Builder.CreateShuffleVector(Op0, Op1, Idxs);
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.pand.")) {
Rep = Builder.CreateAnd(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.pandn.")) {
Rep = Builder.CreateAnd(Builder.CreateNot(CI->getArgOperand(0)),
CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.por.")) {
Rep = Builder.CreateOr(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.pxor.")) {
Rep = Builder.CreateXor(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.and.")) {
VectorType *FTy = cast<VectorType>(CI->getType());
VectorType *ITy = VectorType::getInteger(FTy);
Rep = Builder.CreateAnd(Builder.CreateBitCast(CI->getArgOperand(0), ITy),
Builder.CreateBitCast(CI->getArgOperand(1), ITy));
Rep = Builder.CreateBitCast(Rep, FTy);
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.andn.")) {
VectorType *FTy = cast<VectorType>(CI->getType());
VectorType *ITy = VectorType::getInteger(FTy);
Rep = Builder.CreateNot(Builder.CreateBitCast(CI->getArgOperand(0), ITy));
Rep = Builder.CreateAnd(Rep,
Builder.CreateBitCast(CI->getArgOperand(1), ITy));
Rep = Builder.CreateBitCast(Rep, FTy);
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.or.")) {
VectorType *FTy = cast<VectorType>(CI->getType());
VectorType *ITy = VectorType::getInteger(FTy);
Rep = Builder.CreateOr(Builder.CreateBitCast(CI->getArgOperand(0), ITy),
Builder.CreateBitCast(CI->getArgOperand(1), ITy));
Rep = Builder.CreateBitCast(Rep, FTy);
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.xor.")) {
VectorType *FTy = cast<VectorType>(CI->getType());
VectorType *ITy = VectorType::getInteger(FTy);
Rep = Builder.CreateXor(Builder.CreateBitCast(CI->getArgOperand(0), ITy),
Builder.CreateBitCast(CI->getArgOperand(1), ITy));
Rep = Builder.CreateBitCast(Rep, FTy);
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.padd.")) {
Rep = Builder.CreateAdd(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.psub.")) {
Rep = Builder.CreateSub(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.pmull.")) {
Rep = Builder.CreateMul(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && (Name.startswith("avx512.mask.add.p"))) {
Rep = Builder.CreateFAdd(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.div.p")) {
Rep = Builder.CreateFDiv(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.mul.p")) {
Rep = Builder.CreateFMul(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.sub.p")) {
Rep = Builder.CreateFSub(CI->getArgOperand(0), CI->getArgOperand(1));
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.pshuf.b.")) {
VectorType *VecTy = cast<VectorType>(CI->getType());
Intrinsic::ID IID;
if (VecTy->getPrimitiveSizeInBits() == 128)
IID = Intrinsic::x86_ssse3_pshuf_b_128;
else if (VecTy->getPrimitiveSizeInBits() == 256)
IID = Intrinsic::x86_avx2_pshuf_b;
else
llvm_unreachable("Unexpected intrinsic");
Rep = Builder.CreateCall(Intrinsic::getDeclaration(F->getParent(), IID),
{ CI->getArgOperand(0), CI->getArgOperand(1) });
Rep = EmitX86Select(Builder, CI->getArgOperand(3), Rep,
CI->getArgOperand(2));
} else if (IsX86 && Name.startswith("avx512.mask.psll")) {
bool IsImmediate = Name[16] == 'i' ||
(Name.size() > 18 && Name[18] == 'i');
bool IsVariable = Name[16] == 'v';
char Size = Name[16] == '.' ? Name[17] :
Name[17] == '.' ? Name[18] :
Name[18] == '.' ? Name[19] :
Name[20];
Intrinsic::ID IID;
if (IsVariable && Name[17] != '.') {
if (Size == 'd' && Name[17] == '2') // avx512.mask.psllv2.di
IID = Intrinsic::x86_avx2_psllv_q;
else if (Size == 'd' && Name[17] == '4') // avx512.mask.psllv4.di
IID = Intrinsic::x86_avx2_psllv_q_256;
else if (Size == 's' && Name[17] == '4') // avx512.mask.psllv4.si
IID = Intrinsic::x86_avx2_psllv_d;
else if (Size == 's' && Name[17] == '8') // avx512.mask.psllv8.si
IID = Intrinsic::x86_avx2_psllv_d_256;
else if (Size == 'h' && Name[17] == '8') // avx512.mask.psllv8.hi
IID = Intrinsic::x86_avx512_psllv_w_128;
else if (Size == 'h' && Name[17] == '1') // avx512.mask.psllv16.hi
IID = Intrinsic::x86_avx512_psllv_w_256;
else if (Name[17] == '3' && Name[18] == '2') // avx512.mask.psllv32hi
IID = Intrinsic::x86_avx512_psllv_w_512;
else
llvm_unreachable("Unexpected size");
} else if (Name.endswith(".128")) {
if (Size == 'd') // avx512.mask.psll.d.128, avx512.mask.psll.di.128
IID = IsImmediate ? Intrinsic::x86_sse2_pslli_d
: Intrinsic::x86_sse2_psll_d;
else if (Size == 'q') // avx512.mask.psll.q.128, avx512.mask.psll.qi.128
IID = IsImmediate ? Intrinsic::x86_sse2_pslli_q
: Intrinsic::x86_sse2_psll_q;
else if (Size == 'w') // avx512.mask.psll.w.128, avx512.mask.psll.wi.128
IID = IsImmediate ? Intrinsic::x86_sse2_pslli_w
: Intrinsic::x86_sse2_psll_w;
else
llvm_unreachable("Unexpected size");
} else if (Name.endswith(".256")) {
if (Size == 'd') // avx512.mask.psll.d.256, avx512.mask.psll.di.256
IID = IsImmediate ? Intrinsic::x86_avx2_pslli_d
: Intrinsic::x86_avx2_psll_d;
else if (Size == 'q') // avx512.mask.psll.q.256, avx512.mask.psll.qi.256
IID = IsImmediate ? Intrinsic::x86_avx2_pslli_q
: Intrinsic::x86_avx2_psll_q;
else if (Size == 'w') // avx512.mask.psll.w.256, avx512.mask.psll.wi.256
IID = IsImmediate ? Intrinsic::x86_avx2_pslli_w
: Intrinsic::x86_avx2_psll_w;
else
llvm_unreachable("Unexpected size");
} else {
if (Size == 'd') // psll.di.512, pslli.d, psll.d, psllv.d.512
IID = IsImmediate ? Intrinsic::x86_avx512_pslli_d_512 :
IsVariable ? Intrinsic::x86_avx512_psllv_d_512 :
Intrinsic::x86_avx512_psll_d_512;
else if (Size == 'q') // psll.qi.512, pslli.q, psll.q, psllv.q.512
IID = IsImmediate ? Intrinsic::x86_avx512_pslli_q_512 :
IsVariable ? Intrinsic::x86_avx512_psllv_q_512 :
Intrinsic::x86_avx512_psll_q_512;
else if (Size == 'w') // psll.wi.512, pslli.w, psll.w
IID = IsImmediate ? Intrinsic::x86_avx512_pslli_w_512
: Intrinsic::x86_avx512_psll_w_512;
else
llvm_unreachable("Unexpected size");
}
Rep = UpgradeX86MaskedShift(Builder, *CI, IID);
} else if (IsX86 && Name.startswith("avx512.mask.psrl")) {
bool IsImmediate = Name[16] == 'i' ||
(Name.size() > 18 && Name[18] == 'i');
bool IsVariable = Name[16] == 'v';
char Size = Name[16] == '.' ? Name[17] :
Name[17] == '.' ? Name[18] :
Name[18] == '.' ? Name[19] :
Name[20];
Intrinsic::ID IID;
if (IsVariable && Name[17] != '.') {
if (Size == 'd' && Name[17] == '2') // avx512.mask.psrlv2.di
IID = Intrinsic::x86_avx2_psrlv_q;
else if (Size == 'd' && Name[17] == '4') // avx512.mask.psrlv4.di
IID = Intrinsic::x86_avx2_psrlv_q_256;
else if (Size == 's' && Name[17] == '4') // avx512.mask.psrlv4.si
IID = Intrinsic::x86_avx2_psrlv_d;
else if (Size == 's' && Name[17] == '8') // avx512.mask.psrlv8.si
IID = Intrinsic::x86_avx2_psrlv_d_256;
else if (Size == 'h' && Name[17] == '8') // avx512.mask.psrlv8.hi
IID = Intrinsic::x86_avx512_psrlv_w_128;
else if (Size == 'h' && Name[17] == '1') // avx512.mask.psrlv16.hi
IID = Intrinsic::x86_avx512_psrlv_w_256;
else if (Name[17] == '3' && Name[18] == '2') // avx512.mask.psrlv32hi
IID = Intrinsic::x86_avx512_psrlv_w_512;
else
llvm_unreachable("Unexpected size");
} else if (Name.endswith(".128")) {
if (Size == 'd') // avx512.mask.psrl.d.128, avx512.mask.psrl.di.128
IID = IsImmediate ? Intrinsic::x86_sse2_psrli_d
: Intrinsic::x86_sse2_psrl_d;
else if (Size == 'q') // avx512.mask.psrl.q.128, avx512.mask.psrl.qi.128
IID = IsImmediate ? Intrinsic::x86_sse2_psrli_q
: Intrinsic::x86_sse2_psrl_q;
else if (Size == 'w') // avx512.mask.psrl.w.128, avx512.mask.psrl.wi.128
IID = IsImmediate ? Intrinsic::x86_sse2_psrli_w
: Intrinsic::x86_sse2_psrl_w;
else
llvm_unreachable("Unexpected size");
} else if (Name.endswith(".256")) {
if (Size == 'd') // avx512.mask.psrl.d.256, avx512.mask.psrl.di.256
IID = IsImmediate ? Intrinsic::x86_avx2_psrli_d
: Intrinsic::x86_avx2_psrl_d;
else if (Size == 'q') // avx512.mask.psrl.q.256, avx512.mask.psrl.qi.256
IID = IsImmediate ? Intrinsic::x86_avx2_psrli_q
: Intrinsic::x86_avx2_psrl_q;
else if (Size == 'w') // avx512.mask.psrl.w.256, avx512.mask.psrl.wi.256
IID = IsImmediate ? Intrinsic::x86_avx2_psrli_w
: Intrinsic::x86_avx2_psrl_w;
else
llvm_unreachable("Unexpected size");
} else {
if (Size == 'd') // psrl.di.512, psrli.d, psrl.d, psrl.d.512
IID = IsImmediate ? Intrinsic::x86_avx512_psrli_d_512 :
IsVariable ? Intrinsic::x86_avx512_psrlv_d_512 :
Intrinsic::x86_avx512_psrl_d_512;
else if (Size == 'q') // psrl.qi.512, psrli.q, psrl.q, psrl.q.512
IID = IsImmediate ? Intrinsic::x86_avx512_psrli_q_512 :
IsVariable ? Intrinsic::x86_avx512_psrlv_q_512 :
Intrinsic::x86_avx512_psrl_q_512;
else if (Size == 'w') // psrl.wi.512, psrli.w, psrl.w)
IID = IsImmediate ? Intrinsic::x86_avx512_psrli_w_512
: Intrinsic::x86_avx512_psrl_w_512;
else
llvm_unreachable("Unexpected size");
}
Rep = UpgradeX86MaskedShift(Builder, *CI, IID);
} else if (IsX86 && Name.startswith("avx512.mask.psra")) {
bool IsImmediate = Name[16] == 'i' ||
(Name.size() > 18 && Name[18] == 'i');
bool IsVariable = Name[16] == 'v';
char Size = Name[16] == '.' ? Name[17] :
Name[17] == '.' ? Name[18] :
Name[18] == '.' ? Name[19] :
Name[20];
Intrinsic::ID IID;
if (IsVariable && Name[17] != '.') {
if (Size == 's' && Name[17] == '4') // avx512.mask.psrav4.si
IID = Intrinsic::x86_avx2_psrav_d;
else if (Size == 's' && Name[17] == '8') // avx512.mask.psrav8.si
IID = Intrinsic::x86_avx2_psrav_d_256;
else if (Size == 'h' && Name[17] == '8') // avx512.mask.psrav8.hi
IID = Intrinsic::x86_avx512_psrav_w_128;
else if (Size == 'h' && Name[17] == '1') // avx512.mask.psrav16.hi
IID = Intrinsic::x86_avx512_psrav_w_256;
else if (Name[17] == '3' && Name[18] == '2') // avx512.mask.psrav32hi
IID = Intrinsic::x86_avx512_psrav_w_512;
else
llvm_unreachable("Unexpected size");
} else if (Name.endswith(".128")) {
if (Size == 'd') // avx512.mask.psra.d.128, avx512.mask.psra.di.128
IID = IsImmediate ? Intrinsic::x86_sse2_psrai_d
: Intrinsic::x86_sse2_psra_d;
else if (Size == 'q') // avx512.mask.psra.q.128, avx512.mask.psra.qi.128
IID = IsImmediate ? Intrinsic::x86_avx512_psrai_q_128 :
IsVariable ? Intrinsic::x86_avx512_psrav_q_128 :
Intrinsic::x86_avx512_psra_q_128;
else if (Size == 'w') // avx512.mask.psra.w.128, avx512.mask.psra.wi.128
IID = IsImmediate ? Intrinsic::x86_sse2_psrai_w
: Intrinsic::x86_sse2_psra_w;
else
llvm_unreachable("Unexpected size");
} else if (Name.endswith(".256")) {
if (Size == 'd') // avx512.mask.psra.d.256, avx512.mask.psra.di.256
IID = IsImmediate ? Intrinsic::x86_avx2_psrai_d
: Intrinsic::x86_avx2_psra_d;
else if (Size == 'q') // avx512.mask.psra.q.256, avx512.mask.psra.qi.256
IID = IsImmediate ? Intrinsic::x86_avx512_psrai_q_256 :
IsVariable ? Intrinsic::x86_avx512_psrav_q_256 :
Intrinsic::x86_avx512_psra_q_256;
else if (Size == 'w') // avx512.mask.psra.w.256, avx512.mask.psra.wi.256
IID = IsImmediate ? Intrinsic::x86_avx2_psrai_w
: Intrinsic::x86_avx2_psra_w;
else
llvm_unreachable("Unexpected size");
} else {
if (Size == 'd') // psra.di.512, psrai.d, psra.d, psrav.d.512
IID = IsImmediate ? Intrinsic::x86_avx512_psrai_d_512 :
IsVariable ? Intrinsic::x86_avx512_psrav_d_512 :
Intrinsic::x86_avx512_psra_d_512;
else if (Size == 'q') // psra.qi.512, psrai.q, psra.q
IID = IsImmediate ? Intrinsic::x86_avx512_psrai_q_512 :
IsVariable ? Intrinsic::x86_avx512_psrav_q_512 :
Intrinsic::x86_avx512_psra_q_512;
else if (Size == 'w') // psra.wi.512, psrai.w, psra.w
IID = IsImmediate ? Intrinsic::x86_avx512_psrai_w_512
: Intrinsic::x86_avx512_psra_w_512;
else
llvm_unreachable("Unexpected size");
}
Rep = UpgradeX86MaskedShift(Builder, *CI, IID);
} else if (IsX86 && Name.startswith("avx512.mask.move.s")) {
Rep = upgradeMaskedMove(Builder, *CI);
} else {
llvm_unreachable("Unknown function for CallInst upgrade.");
}
if (Rep)
CI->replaceAllUsesWith(Rep);
CI->eraseFromParent();
return;
}
std::string Name = CI->getName();
if (!Name.empty())
CI->setName(Name + ".old");
switch (NewFn->getIntrinsicID()) {
default:
llvm_unreachable("Unknown function for CallInst upgrade.");
case Intrinsic::arm_neon_vld1:
case Intrinsic::arm_neon_vld2:
case Intrinsic::arm_neon_vld3:
case Intrinsic::arm_neon_vld4:
case Intrinsic::arm_neon_vld2lane:
case Intrinsic::arm_neon_vld3lane:
case Intrinsic::arm_neon_vld4lane:
case Intrinsic::arm_neon_vst1:
case Intrinsic::arm_neon_vst2:
case Intrinsic::arm_neon_vst3:
case Intrinsic::arm_neon_vst4:
case Intrinsic::arm_neon_vst2lane:
case Intrinsic::arm_neon_vst3lane:
case Intrinsic::arm_neon_vst4lane: {
SmallVector<Value *, 4> Args(CI->arg_operands().begin(),
CI->arg_operands().end());
CI->replaceAllUsesWith(Builder.CreateCall(NewFn, Args));
CI->eraseFromParent();
return;
}
case Intrinsic::ctlz:
case Intrinsic::cttz:
assert(CI->getNumArgOperands() == 1 &&
"Mismatch between function args and call args");
CI->replaceAllUsesWith(Builder.CreateCall(
NewFn, {CI->getArgOperand(0), Builder.getFalse()}, Name));
CI->eraseFromParent();
return;
case Intrinsic::objectsize:
CI->replaceAllUsesWith(Builder.CreateCall(
NewFn, {CI->getArgOperand(0), CI->getArgOperand(1)}, Name));
CI->eraseFromParent();
return;
case Intrinsic::ctpop: {
CI->replaceAllUsesWith(Builder.CreateCall(NewFn, {CI->getArgOperand(0)}));
CI->eraseFromParent();
return;
}
case Intrinsic::x86_xop_vfrcz_ss:
case Intrinsic::x86_xop_vfrcz_sd:
CI->replaceAllUsesWith(
Builder.CreateCall(NewFn, {CI->getArgOperand(1)}, Name));
CI->eraseFromParent();
return;
case Intrinsic::x86_xop_vpermil2pd:
case Intrinsic::x86_xop_vpermil2ps:
case Intrinsic::x86_xop_vpermil2pd_256:
case Intrinsic::x86_xop_vpermil2ps_256: {
SmallVector<Value *, 4> Args(CI->arg_operands().begin(),
CI->arg_operands().end());
VectorType *FltIdxTy = cast<VectorType>(Args[2]->getType());
VectorType *IntIdxTy = VectorType::getInteger(FltIdxTy);
Args[2] = Builder.CreateBitCast(Args[2], IntIdxTy);
CI->replaceAllUsesWith(Builder.CreateCall(NewFn, Args, Name));
CI->eraseFromParent();
return;
}
case Intrinsic::x86_sse41_ptestc:
case Intrinsic::x86_sse41_ptestz:
case Intrinsic::x86_sse41_ptestnzc: {
// The arguments for these intrinsics used to be v4f32, and changed
// to v2i64. This is purely a nop, since those are bitwise intrinsics.
// So, the only thing required is a bitcast for both arguments.
// First, check the arguments have the old type.
Value *Arg0 = CI->getArgOperand(0);
if (Arg0->getType() != VectorType::get(Type::getFloatTy(C), 4))
return;
// Old intrinsic, add bitcasts
Value *Arg1 = CI->getArgOperand(1);
Type *NewVecTy = VectorType::get(Type::getInt64Ty(C), 2);
Value *BC0 = Builder.CreateBitCast(Arg0, NewVecTy, "cast");
Value *BC1 = Builder.CreateBitCast(Arg1, NewVecTy, "cast");
CallInst *NewCall = Builder.CreateCall(NewFn, {BC0, BC1}, Name);
CI->replaceAllUsesWith(NewCall);
CI->eraseFromParent();
return;
}
case Intrinsic::x86_sse41_insertps:
case Intrinsic::x86_sse41_dppd:
case Intrinsic::x86_sse41_dpps:
case Intrinsic::x86_sse41_mpsadbw:
case Intrinsic::x86_avx_dp_ps_256:
case Intrinsic::x86_avx2_mpsadbw: {
// Need to truncate the last argument from i32 to i8 -- this argument models
// an inherently 8-bit immediate operand to these x86 instructions.
SmallVector<Value *, 4> Args(CI->arg_operands().begin(),
CI->arg_operands().end());
// Replace the last argument with a trunc.
Args.back() = Builder.CreateTrunc(Args.back(), Type::getInt8Ty(C), "trunc");
CallInst *NewCall = Builder.CreateCall(NewFn, Args);
CI->replaceAllUsesWith(NewCall);
CI->eraseFromParent();
return;
}
case Intrinsic::thread_pointer: {
CI->replaceAllUsesWith(Builder.CreateCall(NewFn, {}));
CI->eraseFromParent();
return;
}
case Intrinsic::invariant_start:
case Intrinsic::invariant_end:
case Intrinsic::masked_load:
case Intrinsic::masked_store: {
SmallVector<Value *, 4> Args(CI->arg_operands().begin(),
CI->arg_operands().end());
CI->replaceAllUsesWith(Builder.CreateCall(NewFn, Args));
CI->eraseFromParent();
return;
}
}
}
void llvm::UpgradeCallsToIntrinsic(Function *F) {
assert(F && "Illegal attempt to upgrade a non-existent intrinsic.");
// Check if this function should be upgraded and get the replacement function
// if there is one.
Function *NewFn;
if (UpgradeIntrinsicFunction(F, NewFn)) {
// Replace all users of the old function with the new function or new
// instructions. This is not a range loop because the call is deleted.
for (auto UI = F->user_begin(), UE = F->user_end(); UI != UE; )
if (CallInst *CI = dyn_cast<CallInst>(*UI++))
UpgradeIntrinsicCall(CI, NewFn);
// Remove old function, no longer used, from the module.
F->eraseFromParent();
}
}
MDNode *llvm::UpgradeTBAANode(MDNode &MD) {
// Check if the tag uses struct-path aware TBAA format.
if (isa<MDNode>(MD.getOperand(0)) && MD.getNumOperands() >= 3)
return &MD;
auto &Context = MD.getContext();
if (MD.getNumOperands() == 3) {
Metadata *Elts[] = {MD.getOperand(0), MD.getOperand(1)};
MDNode *ScalarType = MDNode::get(Context, Elts);
// Create a MDNode <ScalarType, ScalarType, offset 0, const>
Metadata *Elts2[] = {ScalarType, ScalarType,
ConstantAsMetadata::get(
Constant::getNullValue(Type::getInt64Ty(Context))),
MD.getOperand(2)};
return MDNode::get(Context, Elts2);
}
// Create a MDNode <MD, MD, offset 0>
Metadata *Elts[] = {&MD, &MD, ConstantAsMetadata::get(Constant::getNullValue(
Type::getInt64Ty(Context)))};
return MDNode::get(Context, Elts);
}
Instruction *llvm::UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy,
Instruction *&Temp) {
if (Opc != Instruction::BitCast)
return nullptr;
Temp = nullptr;
Type *SrcTy = V->getType();
if (SrcTy->isPtrOrPtrVectorTy() && DestTy->isPtrOrPtrVectorTy() &&
SrcTy->getPointerAddressSpace() != DestTy->getPointerAddressSpace()) {
LLVMContext &Context = V->getContext();
// We have no information about target data layout, so we assume that
// the maximum pointer size is 64bit.
Type *MidTy = Type::getInt64Ty(Context);
Temp = CastInst::Create(Instruction::PtrToInt, V, MidTy);
return CastInst::Create(Instruction::IntToPtr, Temp, DestTy);
}
return nullptr;
}
Value *llvm::UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy) {
if (Opc != Instruction::BitCast)
return nullptr;
Type *SrcTy = C->getType();
if (SrcTy->isPtrOrPtrVectorTy() && DestTy->isPtrOrPtrVectorTy() &&
SrcTy->getPointerAddressSpace() != DestTy->getPointerAddressSpace()) {
LLVMContext &Context = C->getContext();
// We have no information about target data layout, so we assume that
// the maximum pointer size is 64bit.
Type *MidTy = Type::getInt64Ty(Context);
return ConstantExpr::getIntToPtr(ConstantExpr::getPtrToInt(C, MidTy),
DestTy);
}
return nullptr;
}
/// Check the debug info version number, if it is out-dated, drop the debug
/// info. Return true if module is modified.
bool llvm::UpgradeDebugInfo(Module &M) {
unsigned Version = getDebugMetadataVersionFromModule(M);
if (Version == DEBUG_METADATA_VERSION)
return false;
bool RetCode = StripDebugInfo(M);
if (RetCode) {
DiagnosticInfoDebugMetadataVersion DiagVersion(M, Version);
M.getContext().diagnose(DiagVersion);
}
return RetCode;
}
bool llvm::UpgradeModuleFlags(Module &M) {
const NamedMDNode *ModFlags = M.getModuleFlagsMetadata();
if (!ModFlags)
return false;
bool HasObjCFlag = false, HasClassProperties = false;
for (unsigned I = 0, E = ModFlags->getNumOperands(); I != E; ++I) {
MDNode *Op = ModFlags->getOperand(I);
if (Op->getNumOperands() < 2)
continue;
MDString *ID = dyn_cast_or_null<MDString>(Op->getOperand(1));
if (!ID)
continue;
if (ID->getString() == "Objective-C Image Info Version")
HasObjCFlag = true;
if (ID->getString() == "Objective-C Class Properties")
HasClassProperties = true;
}
// "Objective-C Class Properties" is recently added for Objective-C. We
// upgrade ObjC bitcodes to contain a "Objective-C Class Properties" module
// flag of value 0, so we can correclty downgrade this flag when trying to
// link an ObjC bitcode without this module flag with an ObjC bitcode with
// this module flag.
if (HasObjCFlag && !HasClassProperties) {
M.addModuleFlag(llvm::Module::Override, "Objective-C Class Properties",
(uint32_t)0);
return true;
}
return false;
}
static bool isOldLoopArgument(Metadata *MD) {
auto *T = dyn_cast_or_null<MDTuple>(MD);
if (!T)
return false;
if (T->getNumOperands() < 1)
return false;
auto *S = dyn_cast_or_null<MDString>(T->getOperand(0));
if (!S)
return false;
return S->getString().startswith("llvm.vectorizer.");
}
static MDString *upgradeLoopTag(LLVMContext &C, StringRef OldTag) {
StringRef OldPrefix = "llvm.vectorizer.";
assert(OldTag.startswith(OldPrefix) && "Expected old prefix");
if (OldTag == "llvm.vectorizer.unroll")
return MDString::get(C, "llvm.loop.interleave.count");
return MDString::get(
C, (Twine("llvm.loop.vectorize.") + OldTag.drop_front(OldPrefix.size()))
.str());
}
static Metadata *upgradeLoopArgument(Metadata *MD) {
auto *T = dyn_cast_or_null<MDTuple>(MD);
if (!T)
return MD;
if (T->getNumOperands() < 1)
return MD;
auto *OldTag = dyn_cast_or_null<MDString>(T->getOperand(0));
if (!OldTag)
return MD;
if (!OldTag->getString().startswith("llvm.vectorizer."))
return MD;
// This has an old tag. Upgrade it.
SmallVector<Metadata *, 8> Ops;
Ops.reserve(T->getNumOperands());
Ops.push_back(upgradeLoopTag(T->getContext(), OldTag->getString()));
for (unsigned I = 1, E = T->getNumOperands(); I != E; ++I)
Ops.push_back(T->getOperand(I));
return MDTuple::get(T->getContext(), Ops);
}
MDNode *llvm::upgradeInstructionLoopAttachment(MDNode &N) {
auto *T = dyn_cast<MDTuple>(&N);
if (!T)
return &N;
if (none_of(T->operands(), isOldLoopArgument))
return &N;
SmallVector<Metadata *, 8> Ops;
Ops.reserve(T->getNumOperands());
for (Metadata *MD : T->operands())
Ops.push_back(upgradeLoopArgument(MD));
return MDTuple::get(T->getContext(), Ops);
}
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