forked from OSchip/llvm-project
1362 lines
55 KiB
C++
1362 lines
55 KiB
C++
//===-- AutoUpgrade.cpp - Implement auto-upgrade helper 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 implements the auto-upgrade helper functions.
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// This is where deprecated IR intrinsics and other IR features are updated to
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// current specifications.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/AutoUpgrade.h"
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#include "llvm/IR/CFG.h"
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#include "llvm/IR/CallSite.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DIBuilder.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/DiagnosticInfo.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/Instruction.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Regex.h"
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#include <cstring>
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using namespace llvm;
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// Upgrade the declarations of the SSE4.1 functions whose arguments have
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// changed their type from v4f32 to v2i64.
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static bool UpgradeSSE41Function(Function* F, Intrinsic::ID IID,
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Function *&NewFn) {
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// Check whether this is an old version of the function, which received
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// v4f32 arguments.
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Type *Arg0Type = F->getFunctionType()->getParamType(0);
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if (Arg0Type != VectorType::get(Type::getFloatTy(F->getContext()), 4))
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return false;
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// Yes, it's old, replace it with new version.
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F->setName(F->getName() + ".old");
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NewFn = Intrinsic::getDeclaration(F->getParent(), IID);
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return true;
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}
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// Upgrade the declarations of intrinsic functions whose 8-bit immediate mask
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// arguments have changed their type from i32 to i8.
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static bool UpgradeX86IntrinsicsWith8BitMask(Function *F, Intrinsic::ID IID,
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Function *&NewFn) {
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// Check that the last argument is an i32.
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Type *LastArgType = F->getFunctionType()->getParamType(
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F->getFunctionType()->getNumParams() - 1);
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if (!LastArgType->isIntegerTy(32))
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return false;
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// Move this function aside and map down.
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F->setName(F->getName() + ".old");
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NewFn = Intrinsic::getDeclaration(F->getParent(), IID);
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return true;
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}
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static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
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assert(F && "Illegal to upgrade a non-existent Function.");
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// Quickly eliminate it, if it's not a candidate.
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StringRef Name = F->getName();
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if (Name.size() <= 8 || !Name.startswith("llvm."))
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return false;
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Name = Name.substr(5); // Strip off "llvm."
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switch (Name[0]) {
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default: break;
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case 'a': {
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if (Name.startswith("arm.neon.vclz")) {
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Type* args[2] = {
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F->arg_begin()->getType(),
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Type::getInt1Ty(F->getContext())
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};
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// Can't use Intrinsic::getDeclaration here as it adds a ".i1" to
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// the end of the name. Change name from llvm.arm.neon.vclz.* to
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// llvm.ctlz.*
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FunctionType* fType = FunctionType::get(F->getReturnType(), args, false);
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NewFn = Function::Create(fType, F->getLinkage(),
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"llvm.ctlz." + Name.substr(14), F->getParent());
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return true;
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}
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if (Name.startswith("arm.neon.vcnt")) {
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NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::ctpop,
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F->arg_begin()->getType());
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return true;
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}
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Regex vldRegex("^arm\\.neon\\.vld([1234]|[234]lane)\\.v[a-z0-9]*$");
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if (vldRegex.match(Name)) {
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auto fArgs = F->getFunctionType()->params();
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SmallVector<Type *, 4> Tys(fArgs.begin(), fArgs.end());
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// Can't use Intrinsic::getDeclaration here as the return types might
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// then only be structurally equal.
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FunctionType* fType = FunctionType::get(F->getReturnType(), Tys, false);
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NewFn = Function::Create(fType, F->getLinkage(),
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"llvm." + Name + ".p0i8", F->getParent());
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return true;
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}
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Regex vstRegex("^arm\\.neon\\.vst([1234]|[234]lane)\\.v[a-z0-9]*$");
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if (vstRegex.match(Name)) {
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static const Intrinsic::ID StoreInts[] = {Intrinsic::arm_neon_vst1,
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Intrinsic::arm_neon_vst2,
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Intrinsic::arm_neon_vst3,
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Intrinsic::arm_neon_vst4};
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static const Intrinsic::ID StoreLaneInts[] = {
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Intrinsic::arm_neon_vst2lane, Intrinsic::arm_neon_vst3lane,
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Intrinsic::arm_neon_vst4lane
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};
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auto fArgs = F->getFunctionType()->params();
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Type *Tys[] = {fArgs[0], fArgs[1]};
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if (Name.find("lane") == StringRef::npos)
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NewFn = Intrinsic::getDeclaration(F->getParent(),
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StoreInts[fArgs.size() - 3], Tys);
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else
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NewFn = Intrinsic::getDeclaration(F->getParent(),
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StoreLaneInts[fArgs.size() - 5], Tys);
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return true;
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}
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if (Name == "aarch64.thread.pointer" || Name == "arm.thread.pointer") {
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NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::thread_pointer);
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return true;
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}
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break;
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}
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case 'c': {
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if (Name.startswith("ctlz.") && F->arg_size() == 1) {
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F->setName(Name + ".old");
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NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::ctlz,
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F->arg_begin()->getType());
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return true;
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}
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if (Name.startswith("cttz.") && F->arg_size() == 1) {
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F->setName(Name + ".old");
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NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::cttz,
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F->arg_begin()->getType());
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return true;
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}
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break;
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}
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case 'o':
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// We only need to change the name to match the mangling including the
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// address space.
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if (F->arg_size() == 2 && Name.startswith("objectsize.")) {
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Type *Tys[2] = { F->getReturnType(), F->arg_begin()->getType() };
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if (F->getName() != Intrinsic::getName(Intrinsic::objectsize, Tys)) {
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F->setName(Name + ".old");
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NewFn = Intrinsic::getDeclaration(F->getParent(),
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Intrinsic::objectsize, Tys);
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return true;
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}
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}
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break;
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case 's':
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if (Name == "stackprotectorcheck") {
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NewFn = nullptr;
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return true;
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}
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case 'x': {
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if (Name.startswith("x86.sse2.pcmpeq.") ||
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Name.startswith("x86.sse2.pcmpgt.") ||
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Name.startswith("x86.avx2.pcmpeq.") ||
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Name.startswith("x86.avx2.pcmpgt.") ||
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Name.startswith("x86.avx512.mask.pcmpeq.") ||
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Name.startswith("x86.avx512.mask.pcmpgt.") ||
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Name == "x86.sse41.pmaxsb" ||
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Name == "x86.sse2.pmaxs.w" ||
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Name == "x86.sse41.pmaxsd" ||
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Name == "x86.sse2.pmaxu.b" ||
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Name == "x86.sse41.pmaxuw" ||
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Name == "x86.sse41.pmaxud" ||
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Name == "x86.sse41.pminsb" ||
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Name == "x86.sse2.pmins.w" ||
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Name == "x86.sse41.pminsd" ||
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Name == "x86.sse2.pminu.b" ||
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Name == "x86.sse41.pminuw" ||
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Name == "x86.sse41.pminud" ||
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Name.startswith("x86.avx2.pmax") ||
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Name.startswith("x86.avx2.pmin") ||
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Name.startswith("x86.avx2.vbroadcast") ||
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Name.startswith("x86.avx2.pbroadcast") ||
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Name.startswith("x86.avx.vpermil.") ||
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Name.startswith("x86.sse2.pshuf") ||
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Name.startswith("x86.avx512.mask.pshuf.d.") ||
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Name.startswith("x86.avx512.mask.pshufl.w.") ||
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Name.startswith("x86.avx512.mask.pshufh.w.") ||
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Name.startswith("x86.sse41.pmovsx") ||
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Name.startswith("x86.sse41.pmovzx") ||
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Name.startswith("x86.avx2.pmovsx") ||
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Name.startswith("x86.avx2.pmovzx") ||
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Name == "x86.sse2.cvtdq2pd" ||
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Name == "x86.sse2.cvtps2pd" ||
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Name == "x86.avx.cvtdq2.pd.256" ||
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Name == "x86.avx.cvt.ps2.pd.256" ||
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Name == "x86.sse2.cvttps2dq" ||
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Name.startswith("x86.avx.cvtt.") ||
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Name.startswith("x86.avx.vinsertf128.") ||
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Name == "x86.avx2.vinserti128" ||
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Name.startswith("x86.avx.vextractf128.") ||
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Name == "x86.avx2.vextracti128" ||
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Name.startswith("x86.sse4a.movnt.") ||
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Name.startswith("x86.avx.movnt.") ||
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Name == "x86.sse2.storel.dq" ||
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Name.startswith("x86.sse.storeu.") ||
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Name.startswith("x86.sse2.storeu.") ||
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Name.startswith("x86.avx.storeu.") ||
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Name.startswith("x86.avx512.mask.storeu.p") ||
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Name.startswith("x86.avx512.mask.storeu.b.") ||
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Name.startswith("x86.avx512.mask.storeu.w.") ||
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Name.startswith("x86.avx512.mask.storeu.d.") ||
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Name.startswith("x86.avx512.mask.storeu.q.") ||
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Name.startswith("x86.avx512.mask.store.p") ||
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Name.startswith("x86.avx512.mask.store.b.") ||
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Name.startswith("x86.avx512.mask.store.w.") ||
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Name.startswith("x86.avx512.mask.store.d.") ||
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Name.startswith("x86.avx512.mask.store.q.") ||
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Name.startswith("x86.avx512.mask.loadu.p") ||
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Name.startswith("x86.avx512.mask.loadu.b.") ||
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Name.startswith("x86.avx512.mask.loadu.w.") ||
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Name.startswith("x86.avx512.mask.loadu.d.") ||
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Name.startswith("x86.avx512.mask.loadu.q.") ||
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Name.startswith("x86.avx512.mask.load.p") ||
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Name.startswith("x86.avx512.mask.load.b.") ||
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Name.startswith("x86.avx512.mask.load.w.") ||
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Name.startswith("x86.avx512.mask.load.d.") ||
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Name.startswith("x86.avx512.mask.load.q.") ||
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Name == "x86.sse42.crc32.64.8" ||
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Name.startswith("x86.avx.vbroadcast.s") ||
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Name.startswith("x86.avx512.mask.palignr.") ||
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Name.startswith("x86.sse2.psll.dq") ||
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Name.startswith("x86.sse2.psrl.dq") ||
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Name.startswith("x86.avx2.psll.dq") ||
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Name.startswith("x86.avx2.psrl.dq") ||
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Name.startswith("x86.avx512.psll.dq") ||
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Name.startswith("x86.avx512.psrl.dq") ||
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Name == "x86.sse41.pblendw" ||
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Name.startswith("x86.sse41.blendp") ||
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Name.startswith("x86.avx.blend.p") ||
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Name == "x86.avx2.pblendw" ||
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Name.startswith("x86.avx2.pblendd.") ||
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Name == "x86.avx2.vbroadcasti128" ||
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Name == "x86.xop.vpcmov" ||
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(Name.startswith("x86.xop.vpcom") && F->arg_size() == 2)) {
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NewFn = nullptr;
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return true;
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}
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// SSE4.1 ptest functions may have an old signature.
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if (Name.startswith("x86.sse41.ptest")) {
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if (Name == "x86.sse41.ptestc")
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return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestc, NewFn);
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if (Name == "x86.sse41.ptestz")
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return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestz, NewFn);
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if (Name == "x86.sse41.ptestnzc")
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return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestnzc, NewFn);
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}
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// Several blend and other instructions with masks used the wrong number of
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// bits.
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if (Name == "x86.sse41.insertps")
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return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_insertps,
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NewFn);
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if (Name == "x86.sse41.dppd")
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return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_dppd,
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NewFn);
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if (Name == "x86.sse41.dpps")
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return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_dpps,
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NewFn);
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if (Name == "x86.sse41.mpsadbw")
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return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_mpsadbw,
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NewFn);
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if (Name == "x86.avx.dp.ps.256")
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return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_avx_dp_ps_256,
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NewFn);
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if (Name == "x86.avx2.mpsadbw")
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return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_avx2_mpsadbw,
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NewFn);
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// frcz.ss/sd may need to have an argument dropped
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if (Name.startswith("x86.xop.vfrcz.ss") && F->arg_size() == 2) {
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F->setName(Name + ".old");
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NewFn = Intrinsic::getDeclaration(F->getParent(),
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Intrinsic::x86_xop_vfrcz_ss);
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return true;
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}
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if (Name.startswith("x86.xop.vfrcz.sd") && F->arg_size() == 2) {
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F->setName(Name + ".old");
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NewFn = Intrinsic::getDeclaration(F->getParent(),
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Intrinsic::x86_xop_vfrcz_sd);
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return true;
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}
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// Fix the FMA4 intrinsics to remove the 4
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if (Name.startswith("x86.fma4.")) {
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F->setName("llvm.x86.fma" + Name.substr(8));
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NewFn = F;
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return true;
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}
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// Upgrade any XOP PERMIL2 index operand still using a float/double vector.
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if (Name.startswith("x86.xop.vpermil2")) {
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auto Params = F->getFunctionType()->params();
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auto Idx = Params[2];
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if (Idx->getScalarType()->isFloatingPointTy()) {
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F->setName(Name + ".old");
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unsigned IdxSize = Idx->getPrimitiveSizeInBits();
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unsigned EltSize = Idx->getScalarSizeInBits();
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Intrinsic::ID Permil2ID;
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if (EltSize == 64 && IdxSize == 128)
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Permil2ID = Intrinsic::x86_xop_vpermil2pd;
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else if (EltSize == 32 && IdxSize == 128)
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Permil2ID = Intrinsic::x86_xop_vpermil2ps;
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else if (EltSize == 64 && IdxSize == 256)
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Permil2ID = Intrinsic::x86_xop_vpermil2pd_256;
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else
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Permil2ID = Intrinsic::x86_xop_vpermil2ps_256;
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NewFn = Intrinsic::getDeclaration(F->getParent(), Permil2ID);
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return true;
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}
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}
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break;
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}
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}
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// This may not belong here. This function is effectively being overloaded
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// to both detect an intrinsic which needs upgrading, and to provide the
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// upgraded form of the intrinsic. We should perhaps have two separate
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// functions for this.
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return false;
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}
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bool llvm::UpgradeIntrinsicFunction(Function *F, Function *&NewFn) {
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NewFn = nullptr;
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bool Upgraded = UpgradeIntrinsicFunction1(F, NewFn);
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assert(F != NewFn && "Intrinsic function upgraded to the same function");
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|
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// Upgrade intrinsic attributes. This does not change the function.
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if (NewFn)
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F = NewFn;
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if (Intrinsic::ID id = F->getIntrinsicID())
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F->setAttributes(Intrinsic::getAttributes(F->getContext(), id));
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return Upgraded;
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}
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bool llvm::UpgradeGlobalVariable(GlobalVariable *GV) {
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// Nothing to do yet.
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return false;
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}
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|
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// Handles upgrading SSE2/AVX2/AVX512BW PSLLDQ intrinsics by converting them
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// to byte shuffles.
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static Value *UpgradeX86PSLLDQIntrinsics(IRBuilder<> &Builder, LLVMContext &C,
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Value *Op, unsigned Shift) {
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Type *ResultTy = Op->getType();
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unsigned NumElts = ResultTy->getVectorNumElements() * 8;
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// Bitcast from a 64-bit element type to a byte element type.
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Type *VecTy = VectorType::get(Type::getInt8Ty(C), NumElts);
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Op = Builder.CreateBitCast(Op, VecTy, "cast");
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// We'll be shuffling in zeroes.
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Value *Res = Constant::getNullValue(VecTy);
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// If shift is less than 16, emit a shuffle to move the bytes. Otherwise,
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// we'll just return the zero vector.
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if (Shift < 16) {
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uint32_t Idxs[64];
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// 256/512-bit version is split into 2/4 16-byte lanes.
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for (unsigned l = 0; l != NumElts; l += 16)
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for (unsigned i = 0; i != 16; ++i) {
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unsigned Idx = NumElts + i - Shift;
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if (Idx < NumElts)
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Idx -= NumElts - 16; // end of lane, switch operand.
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Idxs[l + i] = Idx + l;
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}
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Res = Builder.CreateShuffleVector(Res, Op, makeArrayRef(Idxs, NumElts));
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}
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// Bitcast back to a 64-bit element type.
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return Builder.CreateBitCast(Res, ResultTy, "cast");
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}
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// Handles upgrading SSE2/AVX2/AVX512BW PSRLDQ intrinsics by converting them
|
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// to byte shuffles.
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static Value *UpgradeX86PSRLDQIntrinsics(IRBuilder<> &Builder, LLVMContext &C,
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Value *Op,
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unsigned Shift) {
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Type *ResultTy = Op->getType();
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unsigned NumElts = ResultTy->getVectorNumElements() * 8;
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|
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// Bitcast from a 64-bit element type to a byte element type.
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Type *VecTy = VectorType::get(Type::getInt8Ty(C), NumElts);
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Op = Builder.CreateBitCast(Op, VecTy, "cast");
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|
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// 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);
|
|
}
|
|
|
|
static Value *UpgradeX86PALIGNRIntrinsics(IRBuilder<> &Builder, LLVMContext &C,
|
|
Value *Op0, Value *Op1, Value *Shift,
|
|
Value *Passthru, Value *Mask) {
|
|
unsigned ShiftVal = cast<llvm::ConstantInt>(Shift)->getZExtValue();
|
|
|
|
unsigned NumElts = Op0->getType()->getVectorNumElements();
|
|
assert(NumElts % 16 == 0);
|
|
|
|
// 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 (Idx >= 16)
|
|
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, LLVMContext &C,
|
|
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, LLVMContext &C,
|
|
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);
|
|
return Builder.CreateSelect(Cmp, Op0, Op1);
|
|
}
|
|
|
|
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;
|
|
Cmp = Builder.CreateShuffleVector(Cmp, UndefValue::get(Cmp->getType()),
|
|
Indices);
|
|
}
|
|
return Builder.CreateBitCast(Cmp, IntegerType::get(CI.getContext(),
|
|
std::max(NumElts, 8U)));
|
|
}
|
|
|
|
/// 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();
|
|
|
|
Value *Rep;
|
|
// Upgrade packed integer vector compare intrinsics to compare instructions.
|
|
if (Name.startswith("llvm.x86.sse2.pcmpeq.") ||
|
|
Name.startswith("llvm.x86.avx2.pcmpeq.")) {
|
|
Rep = Builder.CreateICmpEQ(CI->getArgOperand(0), CI->getArgOperand(1),
|
|
"pcmpeq");
|
|
Rep = Builder.CreateSExt(Rep, CI->getType(), "");
|
|
} else if (Name.startswith("llvm.x86.sse2.pcmpgt.") ||
|
|
Name.startswith("llvm.x86.avx2.pcmpgt.")) {
|
|
Rep = Builder.CreateICmpSGT(CI->getArgOperand(0), CI->getArgOperand(1),
|
|
"pcmpgt");
|
|
Rep = Builder.CreateSExt(Rep, CI->getType(), "");
|
|
} else if (Name.startswith("llvm.x86.avx512.mask.pcmpeq.")) {
|
|
Rep = upgradeMaskedCompare(Builder, *CI, ICmpInst::ICMP_EQ);
|
|
} else if (Name.startswith("llvm.x86.avx512.mask.pcmpgt.")) {
|
|
Rep = upgradeMaskedCompare(Builder, *CI, ICmpInst::ICMP_SGT);
|
|
} else if (Name == "llvm.x86.sse41.pmaxsb" ||
|
|
Name == "llvm.x86.sse2.pmaxs.w" ||
|
|
Name == "llvm.x86.sse41.pmaxsd" ||
|
|
Name.startswith("llvm.x86.avx2.pmaxs")) {
|
|
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_SGT);
|
|
} else if (Name == "llvm.x86.sse2.pmaxu.b" ||
|
|
Name == "llvm.x86.sse41.pmaxuw" ||
|
|
Name == "llvm.x86.sse41.pmaxud" ||
|
|
Name.startswith("llvm.x86.avx2.pmaxu")) {
|
|
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_UGT);
|
|
} else if (Name == "llvm.x86.sse41.pminsb" ||
|
|
Name == "llvm.x86.sse2.pmins.w" ||
|
|
Name == "llvm.x86.sse41.pminsd" ||
|
|
Name.startswith("llvm.x86.avx2.pmins")) {
|
|
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_SLT);
|
|
} else if (Name == "llvm.x86.sse2.pminu.b" ||
|
|
Name == "llvm.x86.sse41.pminuw" ||
|
|
Name == "llvm.x86.sse41.pminud" ||
|
|
Name.startswith("llvm.x86.avx2.pminu")) {
|
|
Rep = upgradeIntMinMax(Builder, *CI, ICmpInst::ICMP_ULT);
|
|
} else if (Name == "llvm.x86.sse2.cvtdq2pd" ||
|
|
Name == "llvm.x86.sse2.cvtps2pd" ||
|
|
Name == "llvm.x86.avx.cvtdq2.pd.256" ||
|
|
Name == "llvm.x86.avx.cvt.ps2.pd.256") {
|
|
// 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 Int2Double = (StringRef::npos != Name.find("cvtdq2"));
|
|
if (Int2Double)
|
|
Rep = Builder.CreateSIToFP(Rep, DstTy, "cvtdq2pd");
|
|
else
|
|
Rep = Builder.CreateFPExt(Rep, DstTy, "cvtps2pd");
|
|
} else if (Name == "llvm.x86.sse2.cvttps2dq" ||
|
|
Name.startswith("llvm.x86.avx.cvtt.")) {
|
|
// Truncation (round to zero) float/double to i32 vector conversion.
|
|
Value *Src = CI->getArgOperand(0);
|
|
VectorType *DstTy = cast<VectorType>(CI->getType());
|
|
Rep = Builder.CreateFPToSI(Src, DstTy, "cvtt");
|
|
} else if (Name.startswith("llvm.x86.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 (Name.startswith("llvm.x86.avx.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);
|
|
|
|
// Convert the type of the pointer to a pointer to the stored type.
|
|
Value *BC = Builder.CreateBitCast(Arg0,
|
|
PointerType::getUnqual(Arg1->getType()),
|
|
"cast");
|
|
StoreInst *SI = Builder.CreateAlignedStore(Arg1, BC, 32);
|
|
SI->setMetadata(M->getMDKindID("nontemporal"), Node);
|
|
|
|
// Remove intrinsic.
|
|
CI->eraseFromParent();
|
|
return;
|
|
} else if (Name == "llvm.x86.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 (Name.startswith("llvm.x86.sse.storeu.") ||
|
|
Name.startswith("llvm.x86.sse2.storeu.") ||
|
|
Name.startswith("llvm.x86.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 (Name.startswith("llvm.x86.avx512.mask.storeu.p") ||
|
|
Name.startswith("llvm.x86.avx512.mask.storeu.b.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.storeu.w.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.storeu.d.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.storeu.q.")) {
|
|
UpgradeMaskedStore(Builder, C, CI->getArgOperand(0), CI->getArgOperand(1),
|
|
CI->getArgOperand(2), /*Aligned*/false);
|
|
|
|
// Remove intrinsic.
|
|
CI->eraseFromParent();
|
|
return;
|
|
} else if (Name.startswith("llvm.x86.avx512.mask.store.p") ||
|
|
Name.startswith("llvm.x86.avx512.mask.store.b.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.store.w.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.store.d.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.store.q.")) {
|
|
UpgradeMaskedStore(Builder, C, CI->getArgOperand(0), CI->getArgOperand(1),
|
|
CI->getArgOperand(2), /*Aligned*/true);
|
|
|
|
// Remove intrinsic.
|
|
CI->eraseFromParent();
|
|
return;
|
|
} else if (Name.startswith("llvm.x86.avx512.mask.loadu.p") ||
|
|
Name.startswith("llvm.x86.avx512.mask.loadu.b.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.loadu.w.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.loadu.d.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.loadu.q.")) {
|
|
Rep = UpgradeMaskedLoad(Builder, C, CI->getArgOperand(0),
|
|
CI->getArgOperand(1), CI->getArgOperand(2),
|
|
/*Aligned*/false);
|
|
} else if (Name.startswith("llvm.x86.avx512.mask.load.p") ||
|
|
Name.startswith("llvm.x86.avx512.mask.load.b.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.load.w.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.load.d.") ||
|
|
Name.startswith("llvm.x86.avx512.mask.load.q.")) {
|
|
Rep = UpgradeMaskedLoad(Builder, C, CI->getArgOperand(0),
|
|
CI->getArgOperand(1),CI->getArgOperand(2),
|
|
/*Aligned*/true);
|
|
} else if (Name.startswith("llvm.x86.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(18); // strip off "llvm.x86.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 (Name == "llvm.x86.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 (Name == "llvm.x86.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 (Name.startswith("llvm.x86.avx.vbroadcast")) {
|
|
// 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 (Name.startswith("llvm.x86.sse41.pmovsx") ||
|
|
Name.startswith("llvm.x86.sse41.pmovzx") ||
|
|
Name.startswith("llvm.x86.avx2.pmovsx") ||
|
|
Name.startswith("llvm.x86.avx2.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);
|
|
} else if (Name == "llvm.x86.avx2.vbroadcasti128") {
|
|
// Replace vbroadcasts with a vector shuffle.
|
|
Type *VT = VectorType::get(Type::getInt64Ty(C), 2);
|
|
Value *Op = Builder.CreatePointerCast(CI->getArgOperand(0),
|
|
PointerType::getUnqual(VT));
|
|
Value *Load = Builder.CreateLoad(VT, Op);
|
|
uint32_t Idxs[4] = { 0, 1, 0, 1 };
|
|
Rep = Builder.CreateShuffleVector(Load, UndefValue::get(Load->getType()),
|
|
Idxs);
|
|
} else if (Name.startswith("llvm.x86.avx2.pbroadcast") ||
|
|
Name.startswith("llvm.x86.avx2.vbroadcast")) {
|
|
// 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));
|
|
} else if (Name.startswith("llvm.x86.avx512.mask.palignr.")) {
|
|
Rep = UpgradeX86PALIGNRIntrinsics(Builder, C, CI->getArgOperand(0),
|
|
CI->getArgOperand(1),
|
|
CI->getArgOperand(2),
|
|
CI->getArgOperand(3),
|
|
CI->getArgOperand(4));
|
|
} else if (Name == "llvm.x86.sse2.psll.dq" ||
|
|
Name == "llvm.x86.avx2.psll.dq") {
|
|
// 128/256-bit shift left specified in bits.
|
|
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
|
|
Rep = UpgradeX86PSLLDQIntrinsics(Builder, C, CI->getArgOperand(0),
|
|
Shift / 8); // Shift is in bits.
|
|
} else if (Name == "llvm.x86.sse2.psrl.dq" ||
|
|
Name == "llvm.x86.avx2.psrl.dq") {
|
|
// 128/256-bit shift right specified in bits.
|
|
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
|
|
Rep = UpgradeX86PSRLDQIntrinsics(Builder, C, CI->getArgOperand(0),
|
|
Shift / 8); // Shift is in bits.
|
|
} else if (Name == "llvm.x86.sse2.psll.dq.bs" ||
|
|
Name == "llvm.x86.avx2.psll.dq.bs" ||
|
|
Name == "llvm.x86.avx512.psll.dq.512") {
|
|
// 128/256/512-bit shift left specified in bytes.
|
|
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
|
|
Rep = UpgradeX86PSLLDQIntrinsics(Builder, C, CI->getArgOperand(0), Shift);
|
|
} else if (Name == "llvm.x86.sse2.psrl.dq.bs" ||
|
|
Name == "llvm.x86.avx2.psrl.dq.bs" ||
|
|
Name == "llvm.x86.avx512.psrl.dq.512") {
|
|
// 128/256/512-bit shift right specified in bytes.
|
|
unsigned Shift = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue();
|
|
Rep = UpgradeX86PSRLDQIntrinsics(Builder, C, CI->getArgOperand(0), Shift);
|
|
} else if (Name == "llvm.x86.sse41.pblendw" ||
|
|
Name.startswith("llvm.x86.sse41.blendp") ||
|
|
Name.startswith("llvm.x86.avx.blend.p") ||
|
|
Name == "llvm.x86.avx2.pblendw" ||
|
|
Name.startswith("llvm.x86.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 (Name.startswith("llvm.x86.avx.vinsertf128.") ||
|
|
Name == "llvm.x86.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 (Name.startswith("llvm.x86.avx.vextractf128.") ||
|
|
Name == "llvm.x86.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 (Name == "llvm.stackprotectorcheck") {
|
|
Rep = nullptr;
|
|
} else if (Name.startswith("llvm.x86.avx.vpermil.") ||
|
|
Name == "llvm.x86.sse2.pshuf.d" ||
|
|
Name.startswith("llvm.x86.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();
|
|
// Calcuate 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 (Name == "llvm.x86.sse2.pshufl.w" ||
|
|
Name.startswith("llvm.x86.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 (Name == "llvm.x86.sse2.pshufh.w" ||
|
|
Name.startswith("llvm.x86.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 {
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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();
|
|
}
|
|
}
|
|
|
|
void llvm::UpgradeInstWithTBAATag(Instruction *I) {
|
|
MDNode *MD = I->getMetadata(LLVMContext::MD_tbaa);
|
|
assert(MD && "UpgradeInstWithTBAATag should have a TBAA tag");
|
|
// Check if the tag uses struct-path aware TBAA format.
|
|
if (isa<MDNode>(MD->getOperand(0)) && MD->getNumOperands() >= 3)
|
|
return;
|
|
|
|
if (MD->getNumOperands() == 3) {
|
|
Metadata *Elts[] = {MD->getOperand(0), MD->getOperand(1)};
|
|
MDNode *ScalarType = MDNode::get(I->getContext(), Elts);
|
|
// Create a MDNode <ScalarType, ScalarType, offset 0, const>
|
|
Metadata *Elts2[] = {ScalarType, ScalarType,
|
|
ConstantAsMetadata::get(Constant::getNullValue(
|
|
Type::getInt64Ty(I->getContext()))),
|
|
MD->getOperand(2)};
|
|
I->setMetadata(LLVMContext::MD_tbaa, MDNode::get(I->getContext(), Elts2));
|
|
} else {
|
|
// Create a MDNode <MD, MD, offset 0>
|
|
Metadata *Elts[] = {MD, MD, ConstantAsMetadata::get(Constant::getNullValue(
|
|
Type::getInt64Ty(I->getContext())))};
|
|
I->setMetadata(LLVMContext::MD_tbaa, MDNode::get(I->getContext(), 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 report error 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::Error, "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 (!llvm::any_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);
|
|
}
|