2003-12-28 08:19:41 +00:00
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//===-- IntrinsicLowering.cpp - Intrinsic Lowering default implementation -===//
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2005-04-21 22:36:52 +00:00
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//
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2003-12-28 08:19:41 +00:00
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// The LLVM Compiler Infrastructure
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//
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2007-12-29 20:36:04 +00:00
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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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2005-04-21 22:36:52 +00:00
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//
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2003-12-28 08:19:41 +00:00
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//===----------------------------------------------------------------------===//
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//
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2006-11-15 18:00:10 +00:00
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// This file implements the IntrinsicLowering class.
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2003-12-28 08:19:41 +00:00
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//
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//===----------------------------------------------------------------------===//
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2004-02-14 02:47:17 +00:00
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#include "llvm/Constants.h"
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2004-02-12 17:01:09 +00:00
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#include "llvm/DerivedTypes.h"
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2003-12-28 08:19:41 +00:00
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#include "llvm/Module.h"
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2005-05-03 17:19:30 +00:00
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#include "llvm/Type.h"
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2006-11-28 02:08:17 +00:00
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#include "llvm/CodeGen/IntrinsicLowering.h"
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2009-07-11 13:10:19 +00:00
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#include "llvm/Support/ErrorHandling.h"
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2009-08-23 06:03:38 +00:00
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#include "llvm/Support/IRBuilder.h"
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#include "llvm/Support/raw_ostream.h"
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2007-01-29 17:42:06 +00:00
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#include "llvm/Target/TargetData.h"
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2007-02-13 06:01:22 +00:00
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#include "llvm/ADT/SmallVector.h"
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2003-12-28 08:19:41 +00:00
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using namespace llvm;
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2004-05-09 04:29:57 +00:00
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template <class ArgIt>
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2007-01-07 08:12:01 +00:00
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static void EnsureFunctionExists(Module &M, const char *Name,
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ArgIt ArgBegin, ArgIt ArgEnd,
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const Type *RetTy) {
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// Insert a correctly-typed definition now.
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2004-05-09 04:29:57 +00:00
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std::vector<const Type *> ParamTys;
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for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
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ParamTys.push_back(I->getType());
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2007-01-07 08:12:01 +00:00
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M.getOrInsertFunction(Name, FunctionType::get(RetTy, ParamTys, false));
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2004-05-09 04:29:57 +00:00
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}
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2009-02-07 22:37:06 +00:00
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static void EnsureFPIntrinsicsExist(Module &M, Function *Fn,
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const char *FName,
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const char *DName, const char *LDName) {
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2008-09-22 19:51:58 +00:00
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// Insert definitions for all the floating point types.
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2009-02-07 22:37:06 +00:00
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switch((int)Fn->arg_begin()->getType()->getTypeID()) {
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2008-09-22 19:51:58 +00:00
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case Type::FloatTyID:
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2009-02-07 22:37:06 +00:00
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EnsureFunctionExists(M, FName, Fn->arg_begin(), Fn->arg_end(),
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2009-08-13 21:58:54 +00:00
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Type::getFloatTy(M.getContext()));
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2009-02-07 22:37:06 +00:00
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break;
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2008-09-22 19:51:58 +00:00
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case Type::DoubleTyID:
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2009-02-07 22:37:06 +00:00
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EnsureFunctionExists(M, DName, Fn->arg_begin(), Fn->arg_end(),
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2009-08-13 21:58:54 +00:00
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Type::getDoubleTy(M.getContext()));
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2009-02-07 22:37:06 +00:00
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break;
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2008-09-22 19:51:58 +00:00
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case Type::X86_FP80TyID:
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case Type::FP128TyID:
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case Type::PPC_FP128TyID:
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2009-02-07 22:37:06 +00:00
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EnsureFunctionExists(M, LDName, Fn->arg_begin(), Fn->arg_end(),
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Fn->arg_begin()->getType());
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break;
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2008-09-22 19:51:58 +00:00
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}
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}
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2004-02-15 22:16:39 +00:00
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/// ReplaceCallWith - This function is used when we want to lower an intrinsic
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/// call to a call of an external function. This handles hard cases such as
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/// when there was already a prototype for the external function, and if that
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/// prototype doesn't match the arguments we expect to pass in.
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template <class ArgIt>
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static CallInst *ReplaceCallWith(const char *NewFn, CallInst *CI,
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2007-01-07 08:12:01 +00:00
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ArgIt ArgBegin, ArgIt ArgEnd,
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2009-06-26 20:33:47 +00:00
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const Type *RetTy) {
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// If we haven't already looked up this function, check to see if the
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// program already contains a function with this name.
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Module *M = CI->getParent()->getParent()->getParent();
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// Get or insert the definition now.
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std::vector<const Type *> ParamTys;
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for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
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ParamTys.push_back((*I)->getType());
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Constant* FCache = M->getOrInsertFunction(NewFn,
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FunctionType::get(RetTy, ParamTys, false));
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2004-02-15 22:16:39 +00:00
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2009-05-12 20:27:44 +00:00
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IRBuilder<> Builder(CI->getParent(), CI);
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2007-08-01 03:43:44 +00:00
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SmallVector<Value *, 8> Args(ArgBegin, ArgEnd);
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2009-05-12 20:27:44 +00:00
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CallInst *NewCI = Builder.CreateCall(FCache, Args.begin(), Args.end());
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NewCI->setName(CI->getName());
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2007-01-07 08:12:01 +00:00
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if (!CI->use_empty())
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CI->replaceAllUsesWith(NewCI);
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2004-06-11 02:54:02 +00:00
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return NewCI;
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2004-02-15 22:16:39 +00:00
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}
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2006-11-15 18:00:10 +00:00
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void IntrinsicLowering::AddPrototypes(Module &M) {
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2009-08-13 21:58:54 +00:00
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LLVMContext &Context = M.getContext();
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2004-05-09 04:29:57 +00:00
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for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
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2007-01-30 20:08:39 +00:00
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if (I->isDeclaration() && !I->use_empty())
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2004-05-09 04:29:57 +00:00
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switch (I->getIntrinsicID()) {
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default: break;
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case Intrinsic::setjmp:
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2005-05-08 19:46:29 +00:00
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EnsureFunctionExists(M, "setjmp", I->arg_begin(), I->arg_end(),
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2009-08-13 21:58:54 +00:00
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Type::getInt32Ty(M.getContext()));
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2004-05-09 04:29:57 +00:00
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break;
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case Intrinsic::longjmp:
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2005-05-08 19:46:29 +00:00
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EnsureFunctionExists(M, "longjmp", I->arg_begin(), I->arg_end(),
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2009-08-13 21:58:54 +00:00
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Type::getVoidTy(M.getContext()));
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2004-05-09 04:29:57 +00:00
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break;
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case Intrinsic::siglongjmp:
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2005-05-08 19:46:29 +00:00
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EnsureFunctionExists(M, "abort", I->arg_end(), I->arg_end(),
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2009-08-13 21:58:54 +00:00
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Type::getVoidTy(M.getContext()));
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2004-05-09 04:29:57 +00:00
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break;
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2008-11-21 16:42:48 +00:00
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case Intrinsic::memcpy:
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2009-08-13 21:58:54 +00:00
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M.getOrInsertFunction("memcpy",
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2009-10-06 15:40:36 +00:00
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Type::getInt8PtrTy(Context),
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Type::getInt8PtrTy(Context),
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Type::getInt8PtrTy(Context),
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2009-08-13 21:58:54 +00:00
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TD.getIntPtrType(Context), (Type *)0);
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2004-05-09 04:29:57 +00:00
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break;
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2008-11-21 16:42:48 +00:00
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case Intrinsic::memmove:
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2009-08-13 21:58:54 +00:00
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M.getOrInsertFunction("memmove",
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2009-10-06 15:40:36 +00:00
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Type::getInt8PtrTy(Context),
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Type::getInt8PtrTy(Context),
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Type::getInt8PtrTy(Context),
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2009-08-13 21:58:54 +00:00
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TD.getIntPtrType(Context), (Type *)0);
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2004-05-09 04:29:57 +00:00
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break;
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2008-11-21 16:42:48 +00:00
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case Intrinsic::memset:
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2009-08-13 21:58:54 +00:00
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M.getOrInsertFunction("memset",
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2009-10-06 15:40:36 +00:00
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Type::getInt8PtrTy(Context),
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Type::getInt8PtrTy(Context),
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2009-08-13 21:58:54 +00:00
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Type::getInt32Ty(M.getContext()),
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TD.getIntPtrType(Context), (Type *)0);
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2004-05-09 04:29:57 +00:00
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break;
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2007-10-02 17:43:59 +00:00
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case Intrinsic::sqrt:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "sqrtf", "sqrt", "sqrtl");
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2005-04-30 04:07:50 +00:00
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break;
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2007-10-15 22:07:31 +00:00
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case Intrinsic::sin:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "sinf", "sin", "sinl");
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2007-10-15 22:07:31 +00:00
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break;
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case Intrinsic::cos:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "cosf", "cos", "cosl");
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2007-10-15 22:07:31 +00:00
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break;
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case Intrinsic::pow:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "powf", "pow", "powl");
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2007-10-15 22:07:31 +00:00
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break;
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2008-09-04 00:47:13 +00:00
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case Intrinsic::log:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "logf", "log", "logl");
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2008-09-04 00:47:13 +00:00
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break;
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case Intrinsic::log2:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "log2f", "log2", "log2l");
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2008-09-04 00:47:13 +00:00
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break;
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case Intrinsic::log10:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "log10f", "log10", "log10l");
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2008-09-04 00:47:13 +00:00
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break;
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case Intrinsic::exp:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "expf", "exp", "expl");
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2008-09-04 00:47:13 +00:00
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break;
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case Intrinsic::exp2:
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2008-09-22 19:51:58 +00:00
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EnsureFPIntrinsicsExist(M, I, "exp2f", "exp2", "exp2l");
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2008-09-04 00:47:13 +00:00
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break;
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2004-05-09 04:29:57 +00:00
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}
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}
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2004-02-15 22:16:39 +00:00
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2006-01-16 07:57:00 +00:00
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/// LowerBSWAP - Emit the code to lower bswap of V before the specified
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/// instruction IP.
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2009-07-14 23:09:55 +00:00
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static Value *LowerBSWAP(LLVMContext &Context, Value *V, Instruction *IP) {
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2007-01-15 02:27:26 +00:00
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assert(V->getType()->isInteger() && "Can't bswap a non-integer type!");
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2006-01-16 07:57:00 +00:00
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unsigned BitSize = V->getType()->getPrimitiveSizeInBits();
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2009-05-12 20:27:44 +00:00
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IRBuilder<> Builder(IP->getParent(), IP);
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2006-01-16 07:57:00 +00:00
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switch(BitSize) {
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2009-07-14 16:55:14 +00:00
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default: llvm_unreachable("Unhandled type size of value to byteswap!");
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2006-01-16 07:57:00 +00:00
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case 16: {
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2009-07-24 23:12:02 +00:00
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Value *Tmp1 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 8),
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2009-05-12 20:27:44 +00:00
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"bswap.2");
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2009-07-24 23:12:02 +00:00
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Value *Tmp2 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
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2009-05-12 20:27:44 +00:00
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"bswap.1");
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V = Builder.CreateOr(Tmp1, Tmp2, "bswap.i16");
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2006-01-16 07:57:00 +00:00
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break;
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}
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case 32: {
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2009-07-24 23:12:02 +00:00
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Value *Tmp4 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 24),
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2009-05-12 20:27:44 +00:00
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"bswap.4");
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2009-07-24 23:12:02 +00:00
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Value *Tmp3 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 8),
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2009-05-12 20:27:44 +00:00
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"bswap.3");
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2009-07-24 23:12:02 +00:00
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Value *Tmp2 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
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2009-05-12 20:27:44 +00:00
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"bswap.2");
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2009-07-24 23:12:02 +00:00
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Value *Tmp1 = Builder.CreateLShr(V,ConstantInt::get(V->getType(), 24),
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2009-05-12 20:27:44 +00:00
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"bswap.1");
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2009-07-14 23:09:55 +00:00
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Tmp3 = Builder.CreateAnd(Tmp3,
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2009-08-13 21:58:54 +00:00
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ConstantInt::get(Type::getInt32Ty(Context), 0xFF0000),
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2009-05-12 20:27:44 +00:00
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"bswap.and3");
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2009-07-14 23:09:55 +00:00
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Tmp2 = Builder.CreateAnd(Tmp2,
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2009-08-13 21:58:54 +00:00
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ConstantInt::get(Type::getInt32Ty(Context), 0xFF00),
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2009-05-12 20:27:44 +00:00
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"bswap.and2");
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Tmp4 = Builder.CreateOr(Tmp4, Tmp3, "bswap.or1");
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Tmp2 = Builder.CreateOr(Tmp2, Tmp1, "bswap.or2");
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V = Builder.CreateOr(Tmp4, Tmp2, "bswap.i32");
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2006-01-16 07:57:00 +00:00
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break;
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}
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case 64: {
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2009-07-24 23:12:02 +00:00
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Value *Tmp8 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 56),
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2009-05-12 20:27:44 +00:00
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"bswap.8");
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2009-07-24 23:12:02 +00:00
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Value *Tmp7 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 40),
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2009-05-12 20:27:44 +00:00
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"bswap.7");
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2009-07-24 23:12:02 +00:00
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Value *Tmp6 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 24),
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2009-05-12 20:27:44 +00:00
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"bswap.6");
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2009-07-24 23:12:02 +00:00
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Value *Tmp5 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 8),
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2009-05-12 20:27:44 +00:00
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"bswap.5");
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2009-07-24 23:12:02 +00:00
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Value* Tmp4 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
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2009-05-12 20:27:44 +00:00
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"bswap.4");
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2009-07-14 23:09:55 +00:00
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Value* Tmp3 = Builder.CreateLShr(V,
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2009-07-24 23:12:02 +00:00
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ConstantInt::get(V->getType(), 24),
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2009-05-12 20:27:44 +00:00
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"bswap.3");
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2009-07-14 23:09:55 +00:00
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Value* Tmp2 = Builder.CreateLShr(V,
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2009-07-24 23:12:02 +00:00
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ConstantInt::get(V->getType(), 40),
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2009-05-12 20:27:44 +00:00
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"bswap.2");
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2009-07-14 23:09:55 +00:00
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Value* Tmp1 = Builder.CreateLShr(V,
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2009-07-24 23:12:02 +00:00
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ConstantInt::get(V->getType(), 56),
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2009-05-12 20:27:44 +00:00
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"bswap.1");
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Tmp7 = Builder.CreateAnd(Tmp7,
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2009-08-13 21:58:54 +00:00
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ConstantInt::get(Type::getInt64Ty(Context),
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2009-05-12 20:27:44 +00:00
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0xFF000000000000ULL),
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"bswap.and7");
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Tmp6 = Builder.CreateAnd(Tmp6,
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2009-08-13 21:58:54 +00:00
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ConstantInt::get(Type::getInt64Ty(Context),
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2009-05-12 20:27:44 +00:00
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0xFF0000000000ULL),
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"bswap.and6");
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Tmp5 = Builder.CreateAnd(Tmp5,
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2009-08-13 21:58:54 +00:00
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ConstantInt::get(Type::getInt64Ty(Context),
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0xFF00000000ULL),
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2009-05-12 20:27:44 +00:00
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"bswap.and5");
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Tmp4 = Builder.CreateAnd(Tmp4,
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2009-08-13 21:58:54 +00:00
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ConstantInt::get(Type::getInt64Ty(Context),
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0xFF000000ULL),
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2009-05-12 20:27:44 +00:00
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"bswap.and4");
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Tmp3 = Builder.CreateAnd(Tmp3,
|
2009-08-13 21:58:54 +00:00
|
|
|
ConstantInt::get(Type::getInt64Ty(Context),
|
|
|
|
0xFF0000ULL),
|
2009-05-12 20:27:44 +00:00
|
|
|
"bswap.and3");
|
|
|
|
Tmp2 = Builder.CreateAnd(Tmp2,
|
2009-08-13 21:58:54 +00:00
|
|
|
ConstantInt::get(Type::getInt64Ty(Context),
|
|
|
|
0xFF00ULL),
|
2009-05-12 20:27:44 +00:00
|
|
|
"bswap.and2");
|
|
|
|
Tmp8 = Builder.CreateOr(Tmp8, Tmp7, "bswap.or1");
|
|
|
|
Tmp6 = Builder.CreateOr(Tmp6, Tmp5, "bswap.or2");
|
|
|
|
Tmp4 = Builder.CreateOr(Tmp4, Tmp3, "bswap.or3");
|
|
|
|
Tmp2 = Builder.CreateOr(Tmp2, Tmp1, "bswap.or4");
|
|
|
|
Tmp8 = Builder.CreateOr(Tmp8, Tmp6, "bswap.or5");
|
|
|
|
Tmp4 = Builder.CreateOr(Tmp4, Tmp2, "bswap.or6");
|
|
|
|
V = Builder.CreateOr(Tmp8, Tmp4, "bswap.i64");
|
2006-01-16 07:57:00 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return V;
|
|
|
|
}
|
|
|
|
|
2005-05-11 19:42:05 +00:00
|
|
|
/// LowerCTPOP - Emit the code to lower ctpop of V before the specified
|
2006-01-16 07:57:00 +00:00
|
|
|
/// instruction IP.
|
2009-07-14 23:09:55 +00:00
|
|
|
static Value *LowerCTPOP(LLVMContext &Context, Value *V, Instruction *IP) {
|
2007-01-15 02:27:26 +00:00
|
|
|
assert(V->getType()->isInteger() && "Can't ctpop a non-integer type!");
|
2005-05-11 19:42:05 +00:00
|
|
|
|
|
|
|
static const uint64_t MaskValues[6] = {
|
|
|
|
0x5555555555555555ULL, 0x3333333333333333ULL,
|
|
|
|
0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL,
|
|
|
|
0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL
|
|
|
|
};
|
|
|
|
|
2009-05-12 20:27:44 +00:00
|
|
|
IRBuilder<> Builder(IP->getParent(), IP);
|
|
|
|
|
2005-05-11 20:24:12 +00:00
|
|
|
unsigned BitSize = V->getType()->getPrimitiveSizeInBits();
|
2007-06-02 04:10:33 +00:00
|
|
|
unsigned WordSize = (BitSize + 63) / 64;
|
2009-07-24 23:12:02 +00:00
|
|
|
Value *Count = ConstantInt::get(V->getType(), 0);
|
2006-11-08 06:47:33 +00:00
|
|
|
|
2007-06-02 04:10:33 +00:00
|
|
|
for (unsigned n = 0; n < WordSize; ++n) {
|
|
|
|
Value *PartValue = V;
|
|
|
|
for (unsigned i = 1, ct = 0; i < (BitSize>64 ? 64 : BitSize);
|
|
|
|
i <<= 1, ++ct) {
|
2009-07-24 23:12:02 +00:00
|
|
|
Value *MaskCst = ConstantInt::get(V->getType(), MaskValues[ct]);
|
2009-05-12 20:27:44 +00:00
|
|
|
Value *LHS = Builder.CreateAnd(PartValue, MaskCst, "cppop.and1");
|
|
|
|
Value *VShift = Builder.CreateLShr(PartValue,
|
2009-07-24 23:12:02 +00:00
|
|
|
ConstantInt::get(V->getType(), i),
|
2009-05-12 20:27:44 +00:00
|
|
|
"ctpop.sh");
|
|
|
|
Value *RHS = Builder.CreateAnd(VShift, MaskCst, "cppop.and2");
|
|
|
|
PartValue = Builder.CreateAdd(LHS, RHS, "ctpop.step");
|
2007-06-02 04:10:33 +00:00
|
|
|
}
|
2009-05-12 20:27:44 +00:00
|
|
|
Count = Builder.CreateAdd(PartValue, Count, "ctpop.part");
|
2007-06-02 04:10:33 +00:00
|
|
|
if (BitSize > 64) {
|
2009-07-24 23:12:02 +00:00
|
|
|
V = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 64),
|
2009-05-12 20:27:44 +00:00
|
|
|
"ctpop.part.sh");
|
2007-06-02 04:10:33 +00:00
|
|
|
BitSize -= 64;
|
|
|
|
}
|
2005-05-11 19:42:05 +00:00
|
|
|
}
|
|
|
|
|
2007-08-06 16:36:18 +00:00
|
|
|
return Count;
|
2005-05-11 19:42:05 +00:00
|
|
|
}
|
|
|
|
|
2005-05-11 20:24:12 +00:00
|
|
|
/// LowerCTLZ - Emit the code to lower ctlz of V before the specified
|
2006-01-16 07:57:00 +00:00
|
|
|
/// instruction IP.
|
2009-07-14 23:09:55 +00:00
|
|
|
static Value *LowerCTLZ(LLVMContext &Context, Value *V, Instruction *IP) {
|
2005-05-11 20:24:12 +00:00
|
|
|
|
2009-05-12 20:27:44 +00:00
|
|
|
IRBuilder<> Builder(IP->getParent(), IP);
|
|
|
|
|
2005-05-11 20:24:12 +00:00
|
|
|
unsigned BitSize = V->getType()->getPrimitiveSizeInBits();
|
2007-06-02 04:10:33 +00:00
|
|
|
for (unsigned i = 1; i < BitSize; i <<= 1) {
|
2009-07-24 23:12:02 +00:00
|
|
|
Value *ShVal = ConstantInt::get(V->getType(), i);
|
2009-05-12 20:27:44 +00:00
|
|
|
ShVal = Builder.CreateLShr(V, ShVal, "ctlz.sh");
|
|
|
|
V = Builder.CreateOr(V, ShVal, "ctlz.step");
|
2005-05-11 20:24:12 +00:00
|
|
|
}
|
|
|
|
|
2009-05-12 20:27:44 +00:00
|
|
|
V = Builder.CreateNot(V);
|
2009-07-14 23:09:55 +00:00
|
|
|
return LowerCTPOP(Context, V, IP);
|
2005-05-11 20:24:12 +00:00
|
|
|
}
|
|
|
|
|
2009-06-26 20:33:47 +00:00
|
|
|
static void ReplaceFPIntrinsicWithCall(CallInst *CI, const char *Fname,
|
|
|
|
const char *Dname,
|
2008-09-22 20:51:30 +00:00
|
|
|
const char *LDname) {
|
|
|
|
switch (CI->getOperand(1)->getType()->getTypeID()) {
|
2009-07-14 16:55:14 +00:00
|
|
|
default: llvm_unreachable("Invalid type in intrinsic");
|
2008-09-22 20:51:30 +00:00
|
|
|
case Type::FloatTyID:
|
2009-05-12 20:27:44 +00:00
|
|
|
ReplaceCallWith(Fname, CI, CI->op_begin() + 1, CI->op_end(),
|
2009-08-13 21:58:54 +00:00
|
|
|
Type::getFloatTy(CI->getContext()));
|
2008-09-22 20:51:30 +00:00
|
|
|
break;
|
|
|
|
case Type::DoubleTyID:
|
2009-05-12 20:27:44 +00:00
|
|
|
ReplaceCallWith(Dname, CI, CI->op_begin() + 1, CI->op_end(),
|
2009-08-13 21:58:54 +00:00
|
|
|
Type::getDoubleTy(CI->getContext()));
|
2008-09-22 20:51:30 +00:00
|
|
|
break;
|
|
|
|
case Type::X86_FP80TyID:
|
|
|
|
case Type::FP128TyID:
|
|
|
|
case Type::PPC_FP128TyID:
|
2009-05-12 20:27:44 +00:00
|
|
|
ReplaceCallWith(LDname, CI, CI->op_begin() + 1, CI->op_end(),
|
2009-06-26 20:33:47 +00:00
|
|
|
CI->getOperand(1)->getType());
|
2008-09-22 20:51:30 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2007-04-04 23:48:25 +00:00
|
|
|
|
2006-11-15 18:00:10 +00:00
|
|
|
void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
|
2009-05-12 20:27:44 +00:00
|
|
|
IRBuilder<> Builder(CI->getParent(), CI);
|
2009-07-22 00:24:57 +00:00
|
|
|
LLVMContext &Context = CI->getContext();
|
2009-05-12 20:27:44 +00:00
|
|
|
|
2003-12-28 08:19:41 +00:00
|
|
|
Function *Callee = CI->getCalledFunction();
|
|
|
|
assert(Callee && "Cannot lower an indirect call!");
|
2005-04-21 22:36:52 +00:00
|
|
|
|
2003-12-28 08:19:41 +00:00
|
|
|
switch (Callee->getIntrinsicID()) {
|
|
|
|
case Intrinsic::not_intrinsic:
|
2009-07-11 13:10:19 +00:00
|
|
|
llvm_report_error("Cannot lower a call to a non-intrinsic function '"+
|
|
|
|
Callee->getName() + "'!");
|
2003-12-28 08:19:41 +00:00
|
|
|
default:
|
2009-07-11 13:10:19 +00:00
|
|
|
llvm_report_error("Code generator does not support intrinsic function '"+
|
|
|
|
Callee->getName()+"'!");
|
2003-12-28 08:19:41 +00:00
|
|
|
|
2004-02-15 22:16:39 +00:00
|
|
|
// The setjmp/longjmp intrinsics should only exist in the code if it was
|
|
|
|
// never optimized (ie, right out of the CFE), or if it has been hacked on
|
|
|
|
// by the lowerinvoke pass. In both cases, the right thing to do is to
|
|
|
|
// convert the call to an explicit setjmp or longjmp call.
|
2004-02-15 22:24:51 +00:00
|
|
|
case Intrinsic::setjmp: {
|
2009-05-12 20:27:44 +00:00
|
|
|
Value *V = ReplaceCallWith("setjmp", CI, CI->op_begin() + 1, CI->op_end(),
|
2009-08-13 21:58:54 +00:00
|
|
|
Type::getInt32Ty(Context));
|
|
|
|
if (CI->getType() != Type::getVoidTy(Context))
|
2004-02-15 22:24:51 +00:00
|
|
|
CI->replaceAllUsesWith(V);
|
2003-12-28 08:19:41 +00:00
|
|
|
break;
|
2004-02-15 22:24:51 +00:00
|
|
|
}
|
2005-04-21 22:36:52 +00:00
|
|
|
case Intrinsic::sigsetjmp:
|
2009-08-13 21:58:54 +00:00
|
|
|
if (CI->getType() != Type::getVoidTy(Context))
|
2009-07-31 20:28:14 +00:00
|
|
|
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
|
2004-02-15 22:24:51 +00:00
|
|
|
break;
|
2003-12-28 08:19:41 +00:00
|
|
|
|
2004-06-05 01:05:19 +00:00
|
|
|
case Intrinsic::longjmp: {
|
2009-05-12 20:27:44 +00:00
|
|
|
ReplaceCallWith("longjmp", CI, CI->op_begin() + 1, CI->op_end(),
|
2009-08-13 21:58:54 +00:00
|
|
|
Type::getVoidTy(Context));
|
2004-02-15 22:24:51 +00:00
|
|
|
break;
|
2004-06-05 01:05:19 +00:00
|
|
|
}
|
2004-02-15 22:24:51 +00:00
|
|
|
|
2004-06-05 01:05:19 +00:00
|
|
|
case Intrinsic::siglongjmp: {
|
2003-12-28 08:19:41 +00:00
|
|
|
// Insert the call to abort
|
2006-11-27 01:05:10 +00:00
|
|
|
ReplaceCallWith("abort", CI, CI->op_end(), CI->op_end(),
|
2009-08-13 21:58:54 +00:00
|
|
|
Type::getVoidTy(Context));
|
2003-12-28 08:19:41 +00:00
|
|
|
break;
|
2004-06-05 01:05:19 +00:00
|
|
|
}
|
2007-04-01 07:35:23 +00:00
|
|
|
case Intrinsic::ctpop:
|
2009-07-22 00:24:57 +00:00
|
|
|
CI->replaceAllUsesWith(LowerCTPOP(Context, CI->getOperand(1), CI));
|
For PR411:
This patch is an incremental step towards supporting a flat symbol table.
It de-overloads the intrinsic functions by providing type-specific intrinsics
and arranging for automatically upgrading from the old overloaded name to
the new non-overloaded name. Specifically:
llvm.isunordered -> llvm.isunordered.f32, llvm.isunordered.f64
llvm.sqrt -> llvm.sqrt.f32, llvm.sqrt.f64
llvm.ctpop -> llvm.ctpop.i8, llvm.ctpop.i16, llvm.ctpop.i32, llvm.ctpop.i64
llvm.ctlz -> llvm.ctlz.i8, llvm.ctlz.i16, llvm.ctlz.i32, llvm.ctlz.i64
llvm.cttz -> llvm.cttz.i8, llvm.cttz.i16, llvm.cttz.i32, llvm.cttz.i64
New code should not use the overloaded intrinsic names. Warnings will be
emitted if they are used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25366 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-16 21:12:35 +00:00
|
|
|
break;
|
|
|
|
|
2007-04-01 07:35:23 +00:00
|
|
|
case Intrinsic::bswap:
|
2009-07-22 00:24:57 +00:00
|
|
|
CI->replaceAllUsesWith(LowerBSWAP(Context, CI->getOperand(1), CI));
|
2006-01-16 07:57:00 +00:00
|
|
|
break;
|
|
|
|
|
2007-04-01 07:35:23 +00:00
|
|
|
case Intrinsic::ctlz:
|
2009-07-22 00:24:57 +00:00
|
|
|
CI->replaceAllUsesWith(LowerCTLZ(Context, CI->getOperand(1), CI));
|
2005-05-03 17:19:30 +00:00
|
|
|
break;
|
2006-01-16 07:57:00 +00:00
|
|
|
|
2007-04-01 07:35:23 +00:00
|
|
|
case Intrinsic::cttz: {
|
2005-05-11 20:02:14 +00:00
|
|
|
// cttz(x) -> ctpop(~X & (X-1))
|
2005-05-03 17:19:30 +00:00
|
|
|
Value *Src = CI->getOperand(1);
|
2009-05-12 20:27:44 +00:00
|
|
|
Value *NotSrc = Builder.CreateNot(Src);
|
|
|
|
NotSrc->setName(Src->getName() + ".not");
|
2009-07-24 23:12:02 +00:00
|
|
|
Value *SrcM1 = ConstantInt::get(Src->getType(), 1);
|
2009-05-12 20:27:44 +00:00
|
|
|
SrcM1 = Builder.CreateSub(Src, SrcM1);
|
2009-07-22 00:24:57 +00:00
|
|
|
Src = LowerCTPOP(Context, Builder.CreateAnd(NotSrc, SrcM1), CI);
|
2005-05-03 17:19:30 +00:00
|
|
|
CI->replaceAllUsesWith(Src);
|
|
|
|
break;
|
|
|
|
}
|
2004-01-05 05:36:30 +00:00
|
|
|
|
2006-01-13 02:22:08 +00:00
|
|
|
case Intrinsic::stacksave:
|
|
|
|
case Intrinsic::stackrestore: {
|
|
|
|
if (!Warned)
|
2009-08-23 06:03:38 +00:00
|
|
|
errs() << "WARNING: this target does not support the llvm.stack"
|
|
|
|
<< (Callee->getIntrinsicID() == Intrinsic::stacksave ?
|
2006-12-07 01:30:32 +00:00
|
|
|
"save" : "restore") << " intrinsic.\n";
|
2006-01-13 02:22:08 +00:00
|
|
|
Warned = true;
|
|
|
|
if (Callee->getIntrinsicID() == Intrinsic::stacksave)
|
2009-07-31 20:28:14 +00:00
|
|
|
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
|
2006-01-13 02:22:08 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-02-14 02:47:17 +00:00
|
|
|
case Intrinsic::returnaddress:
|
|
|
|
case Intrinsic::frameaddress:
|
2009-08-23 06:03:38 +00:00
|
|
|
errs() << "WARNING: this target does not support the llvm."
|
|
|
|
<< (Callee->getIntrinsicID() == Intrinsic::returnaddress ?
|
2006-12-07 01:30:32 +00:00
|
|
|
"return" : "frame") << "address intrinsic.\n";
|
2004-02-14 02:47:17 +00:00
|
|
|
CI->replaceAllUsesWith(ConstantPointerNull::get(
|
|
|
|
cast<PointerType>(CI->getType())));
|
|
|
|
break;
|
|
|
|
|
2005-02-28 19:27:23 +00:00
|
|
|
case Intrinsic::prefetch:
|
|
|
|
break; // Simply strip out prefetches on unsupported architectures
|
|
|
|
|
2005-03-28 20:05:49 +00:00
|
|
|
case Intrinsic::pcmarker:
|
|
|
|
break; // Simply strip out pcmarker on unsupported architectures
|
2005-11-11 16:47:30 +00:00
|
|
|
case Intrinsic::readcyclecounter: {
|
2009-08-23 06:03:38 +00:00
|
|
|
errs() << "WARNING: this target does not support the llvm.readcyclecoun"
|
|
|
|
<< "ter intrinsic. It is being lowered to a constant 0\n";
|
2009-08-13 21:58:54 +00:00
|
|
|
CI->replaceAllUsesWith(ConstantInt::get(Type::getInt64Ty(Context), 0));
|
2005-11-11 16:47:30 +00:00
|
|
|
break;
|
|
|
|
}
|
2005-03-28 20:05:49 +00:00
|
|
|
|
2004-01-05 05:36:30 +00:00
|
|
|
case Intrinsic::dbg_stoppoint:
|
|
|
|
case Intrinsic::dbg_region_start:
|
|
|
|
case Intrinsic::dbg_region_end:
|
|
|
|
case Intrinsic::dbg_func_start:
|
2006-03-23 18:06:46 +00:00
|
|
|
case Intrinsic::dbg_declare:
|
2007-07-06 14:46:23 +00:00
|
|
|
break; // Simply strip out debugging intrinsics
|
|
|
|
|
2007-02-21 22:53:45 +00:00
|
|
|
case Intrinsic::eh_exception:
|
2007-09-07 11:39:35 +00:00
|
|
|
case Intrinsic::eh_selector_i32:
|
|
|
|
case Intrinsic::eh_selector_i64:
|
2009-07-31 20:28:14 +00:00
|
|
|
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
|
2007-07-06 14:46:23 +00:00
|
|
|
break;
|
|
|
|
|
2007-09-07 11:39:35 +00:00
|
|
|
case Intrinsic::eh_typeid_for_i32:
|
|
|
|
case Intrinsic::eh_typeid_for_i64:
|
2007-07-06 14:46:23 +00:00
|
|
|
// Return something different to eh_selector.
|
2009-07-24 23:12:02 +00:00
|
|
|
CI->replaceAllUsesWith(ConstantInt::get(CI->getType(), 1));
|
2007-07-06 14:46:23 +00:00
|
|
|
break;
|
2004-02-12 17:01:09 +00:00
|
|
|
|
2007-06-15 22:26:58 +00:00
|
|
|
case Intrinsic::var_annotation:
|
|
|
|
break; // Strip out annotate intrinsic
|
|
|
|
|
2008-11-21 16:42:48 +00:00
|
|
|
case Intrinsic::memcpy: {
|
2009-08-13 21:58:54 +00:00
|
|
|
const IntegerType *IntPtr = TD.getIntPtrType(Context);
|
2009-05-12 20:27:44 +00:00
|
|
|
Value *Size = Builder.CreateIntCast(CI->getOperand(3), IntPtr,
|
|
|
|
/* isSigned */ false);
|
2007-02-06 19:06:38 +00:00
|
|
|
Value *Ops[3];
|
|
|
|
Ops[0] = CI->getOperand(1);
|
|
|
|
Ops[1] = CI->getOperand(2);
|
|
|
|
Ops[2] = Size;
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceCallWith("memcpy", CI, Ops, Ops+3, CI->getOperand(1)->getType());
|
2004-02-12 17:01:09 +00:00
|
|
|
break;
|
2004-06-05 01:05:19 +00:00
|
|
|
}
|
2008-11-21 16:42:48 +00:00
|
|
|
case Intrinsic::memmove: {
|
2009-08-13 21:58:54 +00:00
|
|
|
const IntegerType *IntPtr = TD.getIntPtrType(Context);
|
2009-05-12 20:27:44 +00:00
|
|
|
Value *Size = Builder.CreateIntCast(CI->getOperand(3), IntPtr,
|
|
|
|
/* isSigned */ false);
|
2007-02-06 19:06:38 +00:00
|
|
|
Value *Ops[3];
|
|
|
|
Ops[0] = CI->getOperand(1);
|
|
|
|
Ops[1] = CI->getOperand(2);
|
|
|
|
Ops[2] = Size;
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceCallWith("memmove", CI, Ops, Ops+3, CI->getOperand(1)->getType());
|
2007-02-06 19:06:38 +00:00
|
|
|
break;
|
2006-11-27 01:05:10 +00:00
|
|
|
}
|
2008-11-21 16:42:48 +00:00
|
|
|
case Intrinsic::memset: {
|
2009-08-13 21:58:54 +00:00
|
|
|
const IntegerType *IntPtr = TD.getIntPtrType(Context);
|
2009-05-12 20:27:44 +00:00
|
|
|
Value *Size = Builder.CreateIntCast(CI->getOperand(3), IntPtr,
|
|
|
|
/* isSigned */ false);
|
2007-02-06 19:06:38 +00:00
|
|
|
Value *Ops[3];
|
|
|
|
Ops[0] = CI->getOperand(1);
|
|
|
|
// Extend the amount to i32.
|
2009-08-13 21:58:54 +00:00
|
|
|
Ops[1] = Builder.CreateIntCast(CI->getOperand(2), Type::getInt32Ty(Context),
|
2009-05-12 20:27:44 +00:00
|
|
|
/* isSigned */ false);
|
2007-02-06 19:06:38 +00:00
|
|
|
Ops[2] = Size;
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceCallWith("memset", CI, Ops, Ops+3, CI->getOperand(1)->getType());
|
2004-02-14 02:47:17 +00:00
|
|
|
break;
|
|
|
|
}
|
2007-10-02 17:43:59 +00:00
|
|
|
case Intrinsic::sqrt: {
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceFPIntrinsicWithCall(CI, "sqrtf", "sqrt", "sqrtl");
|
2007-09-28 18:06:58 +00:00
|
|
|
break;
|
|
|
|
}
|
2008-09-04 00:47:13 +00:00
|
|
|
case Intrinsic::log: {
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceFPIntrinsicWithCall(CI, "logf", "log", "logl");
|
2008-09-04 00:47:13 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Intrinsic::log2: {
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceFPIntrinsicWithCall(CI, "log2f", "log2", "log2l");
|
2008-09-04 00:47:13 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Intrinsic::log10: {
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceFPIntrinsicWithCall(CI, "log10f", "log10", "log10l");
|
2008-09-04 00:47:13 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Intrinsic::exp: {
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceFPIntrinsicWithCall(CI, "expf", "exp", "expl");
|
2008-09-04 00:47:13 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Intrinsic::exp2: {
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceFPIntrinsicWithCall(CI, "exp2f", "exp2", "exp2l");
|
2008-09-04 00:47:13 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Intrinsic::pow: {
|
2009-06-26 20:33:47 +00:00
|
|
|
ReplaceFPIntrinsicWithCall(CI, "powf", "pow", "powl");
|
2008-09-04 00:47:13 +00:00
|
|
|
break;
|
|
|
|
}
|
2007-11-15 23:25:33 +00:00
|
|
|
case Intrinsic::flt_rounds:
|
|
|
|
// Lower to "round to the nearest"
|
2009-08-13 21:58:54 +00:00
|
|
|
if (CI->getType() != Type::getVoidTy(Context))
|
2009-07-24 23:12:02 +00:00
|
|
|
CI->replaceAllUsesWith(ConstantInt::get(CI->getType(), 1));
|
2007-11-15 23:25:33 +00:00
|
|
|
break;
|
2004-06-05 01:05:19 +00:00
|
|
|
}
|
2005-04-21 22:36:52 +00:00
|
|
|
|
2003-12-28 08:19:41 +00:00
|
|
|
assert(CI->use_empty() &&
|
|
|
|
"Lowering should have eliminated any uses of the intrinsic call!");
|
2005-05-11 19:42:05 +00:00
|
|
|
CI->eraseFromParent();
|
2003-12-28 08:19:41 +00:00
|
|
|
}
|