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0488fb649a
llvm/lib/VMCore/AutoUpgrade.cpp
Dale Johannesen 0488fb649a Massive rewrite of MMX: 
The x86_mmx type is used for MMX intrinsics, parameters and
return values where these use MMX registers, and is also
supported in load, store, and bitcast.

Only the above operations generate MMX instructions, and optimizations
do not operate on or produce MMX intrinsics. 

MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into
smaller pieces.  Optimizations may occur on these forms and the
result casted back to x86_mmx, provided the result feeds into a
previous existing x86_mmx operation.

The point of all this is prevent optimizations from introducing
MMX operations, which is unsafe due to the EMMS problem.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115243 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30 23:57:10 +00:00

1377 lines
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//===-- AutoUpgrade.cpp - Implement auto-upgrade helper functions ---------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the auto-upgrade helper functions
//
//===----------------------------------------------------------------------===//
#include "llvm/AutoUpgrade.h"
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/IRBuilder.h"
#include <cstring>
using namespace llvm;
static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
assert(F && "Illegal to upgrade a non-existent Function.");
// Get the Function's name.
const std::string& Name = F->getName();
// Convenience
const FunctionType *FTy = F->getFunctionType();
// Quickly eliminate it, if it's not a candidate.
if (Name.length() <= 8 || Name[0] != 'l' || Name[1] != 'l' ||
Name[2] != 'v' || Name[3] != 'm' || Name[4] != '.')
return false;
Module *M = F->getParent();
switch (Name[5]) {
default: break;
case 'a':
// This upgrades the llvm.atomic.lcs, llvm.atomic.las, llvm.atomic.lss,
// and atomics with default address spaces to their new names to their new
// function name (e.g. llvm.atomic.add.i32 => llvm.atomic.add.i32.p0i32)
if (Name.compare(5,7,"atomic.",7) == 0) {
if (Name.compare(12,3,"lcs",3) == 0) {
std::string::size_type delim = Name.find('.',12);
F->setName("llvm.atomic.cmp.swap" + Name.substr(delim) +
".p0" + Name.substr(delim+1));
NewFn = F;
return true;
}
else if (Name.compare(12,3,"las",3) == 0) {
std::string::size_type delim = Name.find('.',12);
F->setName("llvm.atomic.load.add"+Name.substr(delim)
+ ".p0" + Name.substr(delim+1));
NewFn = F;
return true;
}
else if (Name.compare(12,3,"lss",3) == 0) {
std::string::size_type delim = Name.find('.',12);
F->setName("llvm.atomic.load.sub"+Name.substr(delim)
+ ".p0" + Name.substr(delim+1));
NewFn = F;
return true;
}
else if (Name.rfind(".p") == std::string::npos) {
// We don't have an address space qualifier so this has be upgraded
// to the new name. Copy the type name at the end of the intrinsic
// and add to it
std::string::size_type delim = Name.find_last_of('.');
assert(delim != std::string::npos && "can not find type");
F->setName(Name + ".p0" + Name.substr(delim+1));
NewFn = F;
return true;
}
} else if (Name.compare(5, 9, "arm.neon.", 9) == 0) {
if (((Name.compare(14, 5, "vmovl", 5) == 0 ||
Name.compare(14, 5, "vaddl", 5) == 0 ||
Name.compare(14, 5, "vsubl", 5) == 0 ||
Name.compare(14, 5, "vaddw", 5) == 0 ||
Name.compare(14, 5, "vsubw", 5) == 0 ||
Name.compare(14, 5, "vmull", 5) == 0 ||
Name.compare(14, 5, "vmlal", 5) == 0 ||
Name.compare(14, 5, "vmlsl", 5) == 0 ||
Name.compare(14, 5, "vabdl", 5) == 0 ||
Name.compare(14, 5, "vabal", 5) == 0) &&
(Name.compare(19, 2, "s.", 2) == 0 ||
Name.compare(19, 2, "u.", 2) == 0)) ||
(Name.compare(14, 4, "vaba", 4) == 0 &&
(Name.compare(18, 2, "s.", 2) == 0 ||
Name.compare(18, 2, "u.", 2) == 0)) ||
(Name.compare(14, 6, "vmovn.", 6) == 0)) {
// Calls to these are transformed into IR without intrinsics.
NewFn = 0;
return true;
}
// Old versions of NEON ld/st intrinsics are missing alignment arguments.
bool isVLd = (Name.compare(14, 3, "vld", 3) == 0);
bool isVSt = (Name.compare(14, 3, "vst", 3) == 0);
if (isVLd || isVSt) {
unsigned NumVecs = Name.at(17) - '0';
if (NumVecs == 0 || NumVecs > 4)
return false;
bool isLaneOp = (Name.compare(18, 5, "lane.", 5) == 0);
if (!isLaneOp && Name.at(18) != '.')
return false;
unsigned ExpectedArgs = 2; // for the address and alignment
if (isVSt || isLaneOp)
ExpectedArgs += NumVecs;
if (isLaneOp)
ExpectedArgs += 1; // for the lane number
unsigned NumP = FTy->getNumParams();
if (NumP != ExpectedArgs - 1)
return false;
// Change the name of the old (bad) intrinsic, because
// its type is incorrect, but we cannot overload that name.
F->setName("");
// One argument is missing: add the alignment argument.
std::vector<const Type*> NewParams;
for (unsigned p = 0; p < NumP; ++p)
NewParams.push_back(FTy->getParamType(p));
NewParams.push_back(Type::getInt32Ty(F->getContext()));
FunctionType *NewFTy = FunctionType::get(FTy->getReturnType(),
NewParams, false);
NewFn = cast<Function>(M->getOrInsertFunction(Name, NewFTy));
return true;
}
}
break;
case 'b':
// This upgrades the name of the llvm.bswap intrinsic function to only use
// a single type name for overloading. We only care about the old format
// 'llvm.bswap.i*.i*', so check for 'bswap.' and then for there being
// a '.' after 'bswap.'
if (Name.compare(5,6,"bswap.",6) == 0) {
std::string::size_type delim = Name.find('.',11);
if (delim != std::string::npos) {
// Construct the new name as 'llvm.bswap' + '.i*'
F->setName(Name.substr(0,10)+Name.substr(delim));
NewFn = F;
return true;
}
}
break;
case 'c':
// We only want to fix the 'llvm.ct*' intrinsics which do not have the
// correct return type, so we check for the name, and then check if the
// return type does not match the parameter type.
if ( (Name.compare(5,5,"ctpop",5) == 0 ||
Name.compare(5,4,"ctlz",4) == 0 ||
Name.compare(5,4,"cttz",4) == 0) &&
FTy->getReturnType() != FTy->getParamType(0)) {
// We first need to change the name of the old (bad) intrinsic, because
// its type is incorrect, but we cannot overload that name. We
// arbitrarily unique it here allowing us to construct a correctly named
// and typed function below.
F->setName("");
// Now construct the new intrinsic with the correct name and type. We
// leave the old function around in order to query its type, whatever it
// may be, and correctly convert up to the new type.
NewFn = cast<Function>(M->getOrInsertFunction(Name,
FTy->getParamType(0),
FTy->getParamType(0),
(Type *)0));
return true;
}
break;
case 'e':
// The old llvm.eh.selector.i32 is equivalent to the new llvm.eh.selector.
if (Name.compare("llvm.eh.selector.i32") == 0) {
F->setName("llvm.eh.selector");
NewFn = F;
return true;
}
// The old llvm.eh.typeid.for.i32 is equivalent to llvm.eh.typeid.for.
if (Name.compare("llvm.eh.typeid.for.i32") == 0) {
F->setName("llvm.eh.typeid.for");
NewFn = F;
return true;
}
// Convert the old llvm.eh.selector.i64 to a call to llvm.eh.selector.
if (Name.compare("llvm.eh.selector.i64") == 0) {
NewFn = Intrinsic::getDeclaration(M, Intrinsic::eh_selector);
return true;
}
// Convert the old llvm.eh.typeid.for.i64 to a call to llvm.eh.typeid.for.
if (Name.compare("llvm.eh.typeid.for.i64") == 0) {
NewFn = Intrinsic::getDeclaration(M, Intrinsic::eh_typeid_for);
return true;
}
break;
case 'm': {
// This upgrades the llvm.memcpy, llvm.memmove, and llvm.memset to the
// new format that allows overloading the pointer for different address
// space (e.g., llvm.memcpy.i16 => llvm.memcpy.p0i8.p0i8.i16)
const char* NewFnName = NULL;
if (Name.compare(5,8,"memcpy.i",8) == 0) {
if (Name[13] == '8')
NewFnName = "llvm.memcpy.p0i8.p0i8.i8";
else if (Name.compare(13,2,"16") == 0)
NewFnName = "llvm.memcpy.p0i8.p0i8.i16";
else if (Name.compare(13,2,"32") == 0)
NewFnName = "llvm.memcpy.p0i8.p0i8.i32";
else if (Name.compare(13,2,"64") == 0)
NewFnName = "llvm.memcpy.p0i8.p0i8.i64";
} else if (Name.compare(5,9,"memmove.i",9) == 0) {
if (Name[14] == '8')
NewFnName = "llvm.memmove.p0i8.p0i8.i8";
else if (Name.compare(14,2,"16") == 0)
NewFnName = "llvm.memmove.p0i8.p0i8.i16";
else if (Name.compare(14,2,"32") == 0)
NewFnName = "llvm.memmove.p0i8.p0i8.i32";
else if (Name.compare(14,2,"64") == 0)
NewFnName = "llvm.memmove.p0i8.p0i8.i64";
}
else if (Name.compare(5,8,"memset.i",8) == 0) {
if (Name[13] == '8')
NewFnName = "llvm.memset.p0i8.i8";
else if (Name.compare(13,2,"16") == 0)
NewFnName = "llvm.memset.p0i8.i16";
else if (Name.compare(13,2,"32") == 0)
NewFnName = "llvm.memset.p0i8.i32";
else if (Name.compare(13,2,"64") == 0)
NewFnName = "llvm.memset.p0i8.i64";
}
if (NewFnName) {
NewFn = cast<Function>(M->getOrInsertFunction(NewFnName,
FTy->getReturnType(),
FTy->getParamType(0),
FTy->getParamType(1),
FTy->getParamType(2),
FTy->getParamType(3),
Type::getInt1Ty(F->getContext()),
(Type *)0));
return true;
}
break;
}
case 'p':
// This upgrades the llvm.part.select overloaded intrinsic names to only
// use one type specifier in the name. We only care about the old format
// 'llvm.part.select.i*.i*', and solve as above with bswap.
if (Name.compare(5,12,"part.select.",12) == 0) {
std::string::size_type delim = Name.find('.',17);
if (delim != std::string::npos) {
// Construct a new name as 'llvm.part.select' + '.i*'
F->setName(Name.substr(0,16)+Name.substr(delim));
NewFn = F;
return true;
}
break;
}
// This upgrades the llvm.part.set intrinsics similarly as above, however
// we care about 'llvm.part.set.i*.i*.i*', but only the first two types
// must match. There is an additional type specifier after these two
// matching types that we must retain when upgrading. Thus, we require
// finding 2 periods, not just one, after the intrinsic name.
if (Name.compare(5,9,"part.set.",9) == 0) {
std::string::size_type delim = Name.find('.',14);
if (delim != std::string::npos &&
Name.find('.',delim+1) != std::string::npos) {
// Construct a new name as 'llvm.part.select' + '.i*.i*'
F->setName(Name.substr(0,13)+Name.substr(delim));
NewFn = F;
return true;
}
break;
}
break;
case 'x':
// This fixes all MMX shift intrinsic instructions to take a
// x86_mmx instead of a v1i64, v2i32, v4i16, or v8i8.
if (Name.compare(5, 8, "x86.mmx.", 8) == 0) {
const Type *X86_MMXTy = VectorType::getX86_MMXTy(FTy->getContext());
if (Name.compare(13, 4, "padd", 4) == 0 ||
Name.compare(13, 4, "psub", 4) == 0 ||
Name.compare(13, 4, "pmul", 4) == 0 ||
Name.compare(13, 5, "pmadd", 5) == 0 ||
Name.compare(13, 4, "pand", 4) == 0 ||
Name.compare(13, 3, "por", 3) == 0 ||
Name.compare(13, 4, "pxor", 4) == 0 ||
Name.compare(13, 4, "pavg", 4) == 0 ||
Name.compare(13, 4, "pmax", 4) == 0 ||
Name.compare(13, 4, "pmin", 4) == 0 ||
Name.compare(13, 4, "psad", 4) == 0 ||
Name.compare(13, 4, "psll", 4) == 0 ||
Name.compare(13, 4, "psrl", 4) == 0 ||
Name.compare(13, 4, "psra", 4) == 0 ||
Name.compare(13, 4, "pack", 4) == 0 ||
Name.compare(13, 6, "punpck", 6) == 0 ||
Name.compare(13, 4, "pcmp", 4) == 0) {
assert(FTy->getNumParams() == 2 && "MMX intrinsic takes 2 args!");
const Type *SecondParamTy = X86_MMXTy;
if (Name.compare(13, 5, "pslli", 5) == 0 ||
Name.compare(13, 5, "psrli", 5) == 0 ||
Name.compare(13, 5, "psrai", 5) == 0)
SecondParamTy = FTy->getParamType(1);
// Don't do anything if it has the correct types.
if (FTy->getReturnType() == X86_MMXTy &&
FTy->getParamType(0) == X86_MMXTy &&
FTy->getParamType(1) == SecondParamTy)
break;
// We first need to change the name of the old (bad) intrinsic, because
// its type is incorrect, but we cannot overload that name. We
// arbitrarily unique it here allowing us to construct a correctly named
// and typed function below.
F->setName("");
// Now construct the new intrinsic with the correct name and type. We
// leave the old function around in order to query its type, whatever it
// may be, and correctly convert up to the new type.
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy, X86_MMXTy,
SecondParamTy, (Type*)0));
return true;
}
if (Name.compare(13, 8, "maskmovq", 8) == 0) {
// Don't do anything if it has the correct types.
if (FTy->getParamType(0) == X86_MMXTy &&
FTy->getParamType(1) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
FTy->getReturnType(),
X86_MMXTy,
X86_MMXTy,
FTy->getParamType(2),
(Type*)0));
return true;
}
if (Name.compare(13, 8, "pmovmskb", 8) == 0) {
if (FTy->getParamType(0) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
FTy->getReturnType(),
X86_MMXTy,
(Type*)0));
return true;
}
if (Name.compare(13, 5, "movnt", 5) == 0) {
if (FTy->getParamType(1) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
FTy->getReturnType(),
FTy->getParamType(0),
X86_MMXTy,
(Type*)0));
return true;
}
if (Name.compare(13, 7, "palignr", 7) == 0) {
if (FTy->getReturnType() == X86_MMXTy &&
FTy->getParamType(0) == X86_MMXTy &&
FTy->getParamType(1) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy,
X86_MMXTy,
X86_MMXTy,
FTy->getParamType(2),
(Type*)0));
return true;
}
if (Name.compare(13, 5, "pextr", 5) == 0) {
if (FTy->getParamType(0) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
FTy->getReturnType(),
X86_MMXTy,
FTy->getParamType(1),
(Type*)0));
return true;
}
if (Name.compare(13, 5, "pinsr", 5) == 0) {
if (FTy->getReturnType() == X86_MMXTy &&
FTy->getParamType(0) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy,
X86_MMXTy,
FTy->getParamType(1),
FTy->getParamType(2),
(Type*)0));
return true;
}
if (Name.compare(13, 12, "cvtsi32.si64", 12) == 0) {
if (FTy->getReturnType() == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy,
FTy->getParamType(0),
(Type*)0));
return true;
}
if (Name.compare(13, 12, "cvtsi64.si32", 12) == 0) {
if (FTy->getParamType(0) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
FTy->getReturnType(),
X86_MMXTy,
(Type*)0));
return true;
}
if (Name.compare(13, 8, "vec.init", 8) == 0) {
if (FTy->getReturnType() == X86_MMXTy)
break;
F->setName("");
if (Name.compare(21, 2, ".b", 2) == 0)
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy,
FTy->getParamType(0),
FTy->getParamType(1),
FTy->getParamType(2),
FTy->getParamType(3),
FTy->getParamType(4),
FTy->getParamType(5),
FTy->getParamType(6),
FTy->getParamType(7),
(Type*)0));
else if (Name.compare(21, 2, ".w", 2) == 0)
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy,
FTy->getParamType(0),
FTy->getParamType(1),
FTy->getParamType(2),
FTy->getParamType(3),
(Type*)0));
else if (Name.compare(21, 2, ".d", 2) == 0)
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy,
FTy->getParamType(0),
FTy->getParamType(1),
(Type*)0));
return true;
}
if (Name.compare(13, 9, "vec.ext.d", 9) == 0) {
if (FTy->getReturnType() == X86_MMXTy &&
FTy->getParamType(0) == X86_MMXTy)
break;
F->setName("");
NewFn = cast<Function>(M->getOrInsertFunction(Name,
X86_MMXTy,
X86_MMXTy,
FTy->getParamType(1),
(Type*)0));
return true;
}
if (Name.compare(13, 9, "emms", 4) == 0 ||
Name.compare(13, 9, "femms", 5) == 0) {
NewFn = 0;
break;
}
// We really shouldn't get here ever.
assert(0 && "Invalid MMX intrinsic!");
break;
} else if (Name.compare(5,17,"x86.sse2.loadh.pd",17) == 0 ||
Name.compare(5,17,"x86.sse2.loadl.pd",17) == 0 ||
Name.compare(5,16,"x86.sse2.movl.dq",16) == 0 ||
Name.compare(5,15,"x86.sse2.movs.d",15) == 0 ||
Name.compare(5,16,"x86.sse2.shuf.pd",16) == 0 ||
Name.compare(5,18,"x86.sse2.unpckh.pd",18) == 0 ||
Name.compare(5,18,"x86.sse2.unpckl.pd",18) == 0 ||
Name.compare(5,20,"x86.sse2.punpckh.qdq",20) == 0 ||
Name.compare(5,20,"x86.sse2.punpckl.qdq",20) == 0) {
// Calls to these intrinsics are transformed into ShuffleVector's.
NewFn = 0;
return true;
} else if (Name.compare(5, 16, "x86.sse41.pmulld", 16) == 0) {
// Calls to these intrinsics are transformed into vector multiplies.
NewFn = 0;
return true;
} else if (Name.compare(5, 18, "x86.ssse3.palign.r", 18) == 0 ||
Name.compare(5, 22, "x86.ssse3.palign.r.128", 22) == 0) {
// Calls to these intrinsics are transformed into vector shuffles, shifts,
// or 0.
NewFn = 0;
return true;
}
break;
}
// This may not belong here. This function is effectively being overloaded
// to both detect an intrinsic which needs upgrading, and to provide the
// upgraded form of the intrinsic. We should perhaps have two separate
// functions for this.
return false;
}
bool llvm::UpgradeIntrinsicFunction(Function *F, Function *&NewFn) {
NewFn = 0;
bool Upgraded = UpgradeIntrinsicFunction1(F, NewFn);
// Upgrade intrinsic attributes. This does not change the function.
if (NewFn)
F = NewFn;
if (unsigned id = F->getIntrinsicID())
F->setAttributes(Intrinsic::getAttributes((Intrinsic::ID)id));
return Upgraded;
}
bool llvm::UpgradeGlobalVariable(GlobalVariable *GV) {
StringRef Name(GV->getName());
// We are only upgrading one symbol here.
if (Name == ".llvm.eh.catch.all.value") {
GV->setName("llvm.eh.catch.all.value");
return true;
}
return false;
}
/// ExtendNEONArgs - For NEON "long" and "wide" operations, where the results
/// have vector elements twice as big as one or both source operands, do the
/// sign- or zero-extension that used to be handled by intrinsics. The
/// extended values are returned via V0 and V1.
static void ExtendNEONArgs(CallInst *CI, Value *Arg0, Value *Arg1,
Value *&V0, Value *&V1) {
Function *F = CI->getCalledFunction();
const std::string& Name = F->getName();
bool isLong = (Name.at(18) == 'l');
bool isSigned = (Name.at(19) == 's');
if (isSigned) {
if (isLong)
V0 = new SExtInst(Arg0, CI->getType(), "", CI);
else
V0 = Arg0;
V1 = new SExtInst(Arg1, CI->getType(), "", CI);
} else {
if (isLong)
V0 = new ZExtInst(Arg0, CI->getType(), "", CI);
else
V0 = Arg0;
V1 = new ZExtInst(Arg1, CI->getType(), "", CI);
}
}
/// CallVABD - As part of expanding a call to one of the old NEON vabdl, vaba,
/// or vabal intrinsics, construct a call to a vabd intrinsic. Examine the
/// name of the old intrinsic to determine whether to use a signed or unsigned
/// vabd intrinsic. Get the type from the old call instruction, adjusted for
/// half-size vector elements if the old intrinsic was vabdl or vabal.
static Instruction *CallVABD(CallInst *CI, Value *Arg0, Value *Arg1) {
Function *F = CI->getCalledFunction();
const std::string& Name = F->getName();
bool isLong = (Name.at(18) == 'l');
bool isSigned = (Name.at(isLong ? 19 : 18) == 's');
Intrinsic::ID intID;
if (isSigned)
intID = Intrinsic::arm_neon_vabds;
else
intID = Intrinsic::arm_neon_vabdu;
const Type *Ty = CI->getType();
if (isLong)
Ty = VectorType::getTruncatedElementVectorType(cast<const VectorType>(Ty));
Function *VABD = Intrinsic::getDeclaration(F->getParent(), intID, &Ty, 1);
Value *Operands[2];
Operands[0] = Arg0;
Operands[1] = Arg1;
return CallInst::Create(VABD, Operands, Operands+2,
"upgraded."+CI->getName(), CI);
}
/// ConstructNewCallInst - Construct a new CallInst with the signature of NewFn.
static void ConstructNewCallInst(Function *NewFn, CallInst *OldCI,
Value **Operands, unsigned NumOps,
bool AssignName = true) {
// Construct a new CallInst.
CallInst *NewCI =
CallInst::Create(NewFn, Operands, Operands + NumOps,
AssignName ? "upgraded." + OldCI->getName() : "", OldCI);
NewCI->setTailCall(OldCI->isTailCall());
NewCI->setCallingConv(OldCI->getCallingConv());
// Handle any uses of the old CallInst.
if (!OldCI->use_empty()) {
// If the type has changed, add a cast.
Instruction *I = OldCI;
if (OldCI->getType() != NewCI->getType()) {
Function *OldFn = OldCI->getCalledFunction();
CastInst *RetCast =
CastInst::Create(CastInst::getCastOpcode(NewCI, true,
OldFn->getReturnType(), true),
NewCI, OldFn->getReturnType(), NewCI->getName(),OldCI);
I = RetCast;
}
// Replace all uses of the old call with the new cast which has the
// correct type.
OldCI->replaceAllUsesWith(I);
}
// Clean up the old call now that it has been completely upgraded.
OldCI->eraseFromParent();
}
// UpgradeIntrinsicCall - Upgrade a call to an old intrinsic to be a call the
// upgraded intrinsic. All argument and return casting must be provided in
// order to seamlessly integrate with existing context.
void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
Function *F = CI->getCalledFunction();
LLVMContext &C = CI->getContext();
ImmutableCallSite CS(CI);
assert(F && "CallInst has no function associated with it.");
if (!NewFn) {
// Get the Function's name.
const std::string& Name = F->getName();
// Upgrade ARM NEON intrinsics.
if (Name.compare(5, 9, "arm.neon.", 9) == 0) {
Instruction *NewI;
Value *V0, *V1;
if (Name.compare(14, 7, "vmovls.", 7) == 0) {
NewI = new SExtInst(CI->getArgOperand(0), CI->getType(),
"upgraded." + CI->getName(), CI);
} else if (Name.compare(14, 7, "vmovlu.", 7) == 0) {
NewI = new ZExtInst(CI->getArgOperand(0), CI->getType(),
"upgraded." + CI->getName(), CI);
} else if (Name.compare(14, 4, "vadd", 4) == 0) {
ExtendNEONArgs(CI, CI->getArgOperand(0), CI->getArgOperand(1), V0, V1);
NewI = BinaryOperator::CreateAdd(V0, V1, "upgraded."+CI->getName(), CI);
} else if (Name.compare(14, 4, "vsub", 4) == 0) {
ExtendNEONArgs(CI, CI->getArgOperand(0), CI->getArgOperand(1), V0, V1);
NewI = BinaryOperator::CreateSub(V0, V1,"upgraded."+CI->getName(),CI);
} else if (Name.compare(14, 4, "vmul", 4) == 0) {
ExtendNEONArgs(CI, CI->getArgOperand(0), CI->getArgOperand(1), V0, V1);
NewI = BinaryOperator::CreateMul(V0, V1,"upgraded."+CI->getName(),CI);
} else if (Name.compare(14, 4, "vmla", 4) == 0) {
ExtendNEONArgs(CI, CI->getArgOperand(1), CI->getArgOperand(2), V0, V1);
Instruction *MulI = BinaryOperator::CreateMul(V0, V1, "", CI);
NewI = BinaryOperator::CreateAdd(CI->getArgOperand(0), MulI,
"upgraded."+CI->getName(), CI);
} else if (Name.compare(14, 4, "vmls", 4) == 0) {
ExtendNEONArgs(CI, CI->getArgOperand(1), CI->getArgOperand(2), V0, V1);
Instruction *MulI = BinaryOperator::CreateMul(V0, V1, "", CI);
NewI = BinaryOperator::CreateSub(CI->getArgOperand(0), MulI,
"upgraded."+CI->getName(), CI);
} else if (Name.compare(14, 4, "vabd", 4) == 0) {
NewI = CallVABD(CI, CI->getArgOperand(0), CI->getArgOperand(1));
NewI = new ZExtInst(NewI, CI->getType(), "upgraded."+CI->getName(), CI);
} else if (Name.compare(14, 4, "vaba", 4) == 0) {
NewI = CallVABD(CI, CI->getArgOperand(1), CI->getArgOperand(2));
if (Name.at(18) == 'l')
NewI = new ZExtInst(NewI, CI->getType(), "", CI);
NewI = BinaryOperator::CreateAdd(CI->getArgOperand(0), NewI,
"upgraded."+CI->getName(), CI);
} else if (Name.compare(14, 6, "vmovn.", 6) == 0) {
NewI = new TruncInst(CI->getArgOperand(0), CI->getType(),
"upgraded." + CI->getName(), CI);
} else {
llvm_unreachable("Unknown arm.neon function for CallInst upgrade.");
}
// Replace any uses of the old CallInst.
if (!CI->use_empty())
CI->replaceAllUsesWith(NewI);
CI->eraseFromParent();
return;
}
bool isLoadH = false, isLoadL = false, isMovL = false;
bool isMovSD = false, isShufPD = false;
bool isUnpckhPD = false, isUnpcklPD = false;
bool isPunpckhQPD = false, isPunpcklQPD = false;
if (F->getName() == "llvm.x86.sse2.loadh.pd")
isLoadH = true;
else if (F->getName() == "llvm.x86.sse2.loadl.pd")
isLoadL = true;
else if (F->getName() == "llvm.x86.sse2.movl.dq")
isMovL = true;
else if (F->getName() == "llvm.x86.sse2.movs.d")
isMovSD = true;
else if (F->getName() == "llvm.x86.sse2.shuf.pd")
isShufPD = true;
else if (F->getName() == "llvm.x86.sse2.unpckh.pd")
isUnpckhPD = true;
else if (F->getName() == "llvm.x86.sse2.unpckl.pd")
isUnpcklPD = true;
else if (F->getName() == "llvm.x86.sse2.punpckh.qdq")
isPunpckhQPD = true;
else if (F->getName() == "llvm.x86.sse2.punpckl.qdq")
isPunpcklQPD = true;
if (isLoadH || isLoadL || isMovL || isMovSD || isShufPD ||
isUnpckhPD || isUnpcklPD || isPunpckhQPD || isPunpcklQPD) {
std::vector<Constant*> Idxs;
Value *Op0 = CI->getArgOperand(0);
ShuffleVectorInst *SI = NULL;
if (isLoadH || isLoadL) {
Value *Op1 = UndefValue::get(Op0->getType());
Value *Addr = new BitCastInst(CI->getArgOperand(1),
Type::getDoublePtrTy(C),
"upgraded.", CI);
Value *Load = new LoadInst(Addr, "upgraded.", false, 8, CI);
Value *Idx = ConstantInt::get(Type::getInt32Ty(C), 0);
Op1 = InsertElementInst::Create(Op1, Load, Idx, "upgraded.", CI);
if (isLoadH) {
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 0));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 2));
} else {
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 2));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 1));
}
Value *Mask = ConstantVector::get(Idxs);
SI = new ShuffleVectorInst(Op0, Op1, Mask, "upgraded.", CI);
} else if (isMovL) {
Constant *Zero = ConstantInt::get(Type::getInt32Ty(C), 0);
Idxs.push_back(Zero);
Idxs.push_back(Zero);
Idxs.push_back(Zero);
Idxs.push_back(Zero);
Value *ZeroV = ConstantVector::get(Idxs);
Idxs.clear();
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 4));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 5));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 2));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 3));
Value *Mask = ConstantVector::get(Idxs);
SI = new ShuffleVectorInst(ZeroV, Op0, Mask, "upgraded.", CI);
} else if (isMovSD ||
isUnpckhPD || isUnpcklPD || isPunpckhQPD || isPunpcklQPD) {
Value *Op1 = CI->getArgOperand(1);
if (isMovSD) {
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 2));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 1));
} else if (isUnpckhPD || isPunpckhQPD) {
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 1));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 3));
} else {
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 0));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), 2));
}
Value *Mask = ConstantVector::get(Idxs);
SI = new ShuffleVectorInst(Op0, Op1, Mask, "upgraded.", CI);
} else if (isShufPD) {
Value *Op1 = CI->getArgOperand(1);
unsigned MaskVal =
cast<ConstantInt>(CI->getArgOperand(2))->getZExtValue();
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C), MaskVal & 1));
Idxs.push_back(ConstantInt::get(Type::getInt32Ty(C),
((MaskVal >> 1) & 1)+2));
Value *Mask = ConstantVector::get(Idxs);
SI = new ShuffleVectorInst(Op0, Op1, Mask, "upgraded.", CI);
}
assert(SI && "Unexpected!");
// Handle any uses of the old CallInst.
if (!CI->use_empty())
// Replace all uses of the old call with the new cast which has the
// correct type.
CI->replaceAllUsesWith(SI);
// Clean up the old call now that it has been completely upgraded.
CI->eraseFromParent();
} else if (F->getName() == "llvm.x86.sse41.pmulld") {
// Upgrade this set of intrinsics into vector multiplies.
Instruction *Mul = BinaryOperator::CreateMul(CI->getArgOperand(0),
CI->getArgOperand(1),
CI->getName(),
CI);
// Fix up all the uses with our new multiply.
if (!CI->use_empty())
CI->replaceAllUsesWith(Mul);
// Remove upgraded multiply.
CI->eraseFromParent();
} else if (F->getName() == "llvm.x86.ssse3.palign.r") {
Value *Op1 = CI->getArgOperand(0);
Value *Op2 = CI->getArgOperand(1);
Value *Op3 = CI->getArgOperand(2);
unsigned shiftVal = cast<ConstantInt>(Op3)->getZExtValue();
Value *Rep;
IRBuilder<> Builder(C);
Builder.SetInsertPoint(CI->getParent(), CI);
// If palignr is shifting the pair of input vectors less than 9 bytes,
// emit a shuffle instruction.
if (shiftVal <= 8) {
const Type *IntTy = Type::getInt32Ty(C);
const Type *EltTy = Type::getInt8Ty(C);
const Type *VecTy = VectorType::get(EltTy, 8);
Op2 = Builder.CreateBitCast(Op2, VecTy);
Op1 = Builder.CreateBitCast(Op1, VecTy);
llvm::SmallVector<llvm::Constant*, 8> Indices;
for (unsigned i = 0; i != 8; ++i)
Indices.push_back(ConstantInt::get(IntTy, shiftVal + i));
Value *SV = ConstantVector::get(Indices.begin(), Indices.size());
Rep = Builder.CreateShuffleVector(Op2, Op1, SV, "palignr");
Rep = Builder.CreateBitCast(Rep, F->getReturnType());
}
// If palignr is shifting the pair of input vectors more than 8 but less
// than 16 bytes, emit a logical right shift of the destination.
else if (shiftVal < 16) {
// MMX has these as 1 x i64 vectors for some odd optimization reasons.
const Type *EltTy = Type::getInt64Ty(C);
const Type *VecTy = VectorType::get(EltTy, 1);
Op1 = Builder.CreateBitCast(Op1, VecTy, "cast");
Op2 = ConstantInt::get(VecTy, (shiftVal-8) * 8);
// create i32 constant
Function *I =
Intrinsic::getDeclaration(F->getParent(), Intrinsic::x86_mmx_psrl_q);
Rep = Builder.CreateCall2(I, Op1, Op2, "palignr");
}
// If palignr is shifting the pair of vectors more than 32 bytes, emit zero.
else {
Rep = Constant::getNullValue(F->getReturnType());
}
// Replace any uses with our new instruction.
if (!CI->use_empty())
CI->replaceAllUsesWith(Rep);
// Remove upgraded instruction.
CI->eraseFromParent();
} else if (F->getName() == "llvm.x86.ssse3.palign.r.128") {
Value *Op1 = CI->getArgOperand(0);
Value *Op2 = CI->getArgOperand(1);
Value *Op3 = CI->getArgOperand(2);
unsigned shiftVal = cast<ConstantInt>(Op3)->getZExtValue();
Value *Rep;
IRBuilder<> Builder(C);
Builder.SetInsertPoint(CI->getParent(), CI);
// If palignr is shifting the pair of input vectors less than 17 bytes,
// emit a shuffle instruction.
if (shiftVal <= 16) {
const Type *IntTy = Type::getInt32Ty(C);
const Type *EltTy = Type::getInt8Ty(C);
const Type *VecTy = VectorType::get(EltTy, 16);
Op2 = Builder.CreateBitCast(Op2, VecTy);
Op1 = Builder.CreateBitCast(Op1, VecTy);
llvm::SmallVector<llvm::Constant*, 16> Indices;
for (unsigned i = 0; i != 16; ++i)
Indices.push_back(ConstantInt::get(IntTy, shiftVal + i));
Value *SV = ConstantVector::get(Indices.begin(), Indices.size());
Rep = Builder.CreateShuffleVector(Op2, Op1, SV, "palignr");
Rep = Builder.CreateBitCast(Rep, F->getReturnType());
}
// If palignr is shifting the pair of input vectors more than 16 but less
// than 32 bytes, emit a logical right shift of the destination.
else if (shiftVal < 32) {
const Type *EltTy = Type::getInt64Ty(C);
const Type *VecTy = VectorType::get(EltTy, 2);
const Type *IntTy = Type::getInt32Ty(C);
Op1 = Builder.CreateBitCast(Op1, VecTy, "cast");
Op2 = ConstantInt::get(IntTy, (shiftVal-16) * 8);
// create i32 constant
Function *I =
Intrinsic::getDeclaration(F->getParent(), Intrinsic::x86_sse2_psrl_dq);
Rep = Builder.CreateCall2(I, Op1, Op2, "palignr");
}
// If palignr is shifting the pair of vectors more than 32 bytes, emit zero.
else {
Rep = Constant::getNullValue(F->getReturnType());
}
// Replace any uses with our new instruction.
if (!CI->use_empty())
CI->replaceAllUsesWith(Rep);
// Remove upgraded instruction.
CI->eraseFromParent();
} else {
llvm_unreachable("Unknown function for CallInst upgrade.");
}
return;
}
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_vst1:
case Intrinsic::arm_neon_vst2:
case Intrinsic::arm_neon_vst3:
case Intrinsic::arm_neon_vst4:
case Intrinsic::arm_neon_vld2lane:
case Intrinsic::arm_neon_vld3lane:
case Intrinsic::arm_neon_vld4lane:
case Intrinsic::arm_neon_vst2lane:
case Intrinsic::arm_neon_vst3lane:
case Intrinsic::arm_neon_vst4lane: {
// Add a default alignment argument of 1.
SmallVector<Value*, 8> Operands(CS.arg_begin(), CS.arg_end());
Operands.push_back(ConstantInt::get(Type::getInt32Ty(C), 1));
CallInst *NewCI = CallInst::Create(NewFn, Operands.begin(), Operands.end(),
CI->getName(), CI);
NewCI->setTailCall(CI->isTailCall());
NewCI->setCallingConv(CI->getCallingConv());
// Handle any uses of the old CallInst.
if (!CI->use_empty())
// Replace all uses of the old call with the new cast which has the
// correct type.
CI->replaceAllUsesWith(NewCI);
// Clean up the old call now that it has been completely upgraded.
CI->eraseFromParent();
break;
}
case Intrinsic::x86_mmx_padd_b:
case Intrinsic::x86_mmx_padd_w:
case Intrinsic::x86_mmx_padd_d:
case Intrinsic::x86_mmx_padd_q:
case Intrinsic::x86_mmx_padds_b:
case Intrinsic::x86_mmx_padds_w:
case Intrinsic::x86_mmx_paddus_b:
case Intrinsic::x86_mmx_paddus_w:
case Intrinsic::x86_mmx_psub_b:
case Intrinsic::x86_mmx_psub_w:
case Intrinsic::x86_mmx_psub_d:
case Intrinsic::x86_mmx_psub_q:
case Intrinsic::x86_mmx_psubs_b:
case Intrinsic::x86_mmx_psubs_w:
case Intrinsic::x86_mmx_psubus_b:
case Intrinsic::x86_mmx_psubus_w:
case Intrinsic::x86_mmx_pmulh_w:
case Intrinsic::x86_mmx_pmull_w:
case Intrinsic::x86_mmx_pmulhu_w:
case Intrinsic::x86_mmx_pmulu_dq:
case Intrinsic::x86_mmx_pmadd_wd:
case Intrinsic::x86_mmx_pand:
case Intrinsic::x86_mmx_pandn:
case Intrinsic::x86_mmx_por:
case Intrinsic::x86_mmx_pxor:
case Intrinsic::x86_mmx_pavg_b:
case Intrinsic::x86_mmx_pavg_w:
case Intrinsic::x86_mmx_pmaxu_b:
case Intrinsic::x86_mmx_pmaxs_w:
case Intrinsic::x86_mmx_pminu_b:
case Intrinsic::x86_mmx_pmins_w:
case Intrinsic::x86_mmx_psad_bw:
case Intrinsic::x86_mmx_psll_w:
case Intrinsic::x86_mmx_psll_d:
case Intrinsic::x86_mmx_psll_q:
case Intrinsic::x86_mmx_pslli_w:
case Intrinsic::x86_mmx_pslli_d:
case Intrinsic::x86_mmx_pslli_q:
case Intrinsic::x86_mmx_psrl_w:
case Intrinsic::x86_mmx_psrl_d:
case Intrinsic::x86_mmx_psrl_q:
case Intrinsic::x86_mmx_psrli_w:
case Intrinsic::x86_mmx_psrli_d:
case Intrinsic::x86_mmx_psrli_q:
case Intrinsic::x86_mmx_psra_w:
case Intrinsic::x86_mmx_psra_d:
case Intrinsic::x86_mmx_psrai_w:
case Intrinsic::x86_mmx_psrai_d:
case Intrinsic::x86_mmx_packsswb:
case Intrinsic::x86_mmx_packssdw:
case Intrinsic::x86_mmx_packuswb:
case Intrinsic::x86_mmx_punpckhbw:
case Intrinsic::x86_mmx_punpckhwd:
case Intrinsic::x86_mmx_punpckhdq:
case Intrinsic::x86_mmx_punpcklbw:
case Intrinsic::x86_mmx_punpcklwd:
case Intrinsic::x86_mmx_punpckldq:
case Intrinsic::x86_mmx_pcmpeq_b:
case Intrinsic::x86_mmx_pcmpeq_w:
case Intrinsic::x86_mmx_pcmpeq_d:
case Intrinsic::x86_mmx_pcmpgt_b:
case Intrinsic::x86_mmx_pcmpgt_w:
case Intrinsic::x86_mmx_pcmpgt_d: {
Value *Operands[2];
// Cast the operand to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
switch (NewFn->getIntrinsicID()) {
default:
// Cast to the X86 MMX type.
Operands[1] = new BitCastInst(CI->getArgOperand(1),
NewFn->getFunctionType()->getParamType(1),
"upgraded.", CI);
break;
case Intrinsic::x86_mmx_pslli_w:
case Intrinsic::x86_mmx_pslli_d:
case Intrinsic::x86_mmx_pslli_q:
case Intrinsic::x86_mmx_psrli_w:
case Intrinsic::x86_mmx_psrli_d:
case Intrinsic::x86_mmx_psrli_q:
case Intrinsic::x86_mmx_psrai_w:
case Intrinsic::x86_mmx_psrai_d:
// These take an i32 as their second parameter.
Operands[1] = CI->getArgOperand(1);
break;
}
ConstructNewCallInst(NewFn, CI, Operands, 2);
break;
}
case Intrinsic::x86_mmx_maskmovq: {
Value *Operands[3];
// Cast the operands to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
Operands[1] = new BitCastInst(CI->getArgOperand(1),
NewFn->getFunctionType()->getParamType(1),
"upgraded.", CI);
Operands[2] = CI->getArgOperand(2);
ConstructNewCallInst(NewFn, CI, Operands, 3, false);
break;
}
case Intrinsic::x86_mmx_pmovmskb: {
Value *Operands[1];
// Cast the operand to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
ConstructNewCallInst(NewFn, CI, Operands, 1);
break;
}
case Intrinsic::x86_mmx_movnt_dq: {
Value *Operands[2];
Operands[0] = CI->getArgOperand(0);
// Cast the operand to the X86 MMX type.
Operands[1] = new BitCastInst(CI->getArgOperand(1),
NewFn->getFunctionType()->getParamType(1),
"upgraded.", CI);
ConstructNewCallInst(NewFn, CI, Operands, 2, false);
break;
}
case Intrinsic::x86_mmx_palignr_b: {
Value *Operands[3];
// Cast the operands to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
Operands[1] = new BitCastInst(CI->getArgOperand(1),
NewFn->getFunctionType()->getParamType(1),
"upgraded.", CI);
Operands[2] = CI->getArgOperand(2);
ConstructNewCallInst(NewFn, CI, Operands, 3);
break;
}
case Intrinsic::x86_mmx_pextr_w: {
Value *Operands[2];
// Cast the operands to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
Operands[1] = CI->getArgOperand(1);
ConstructNewCallInst(NewFn, CI, Operands, 2);
break;
}
case Intrinsic::x86_mmx_pinsr_w: {
Value *Operands[3];
// Cast the operands to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
Operands[1] = CI->getArgOperand(1);
Operands[2] = CI->getArgOperand(2);
ConstructNewCallInst(NewFn, CI, Operands, 3);
break;
}
#if 0
case Intrinsic::x86_mmx_cvtsi32_si64: {
// The return type needs to be changed.
Value *Operands[1];
Operands[0] = CI->getArgOperand(0);
ConstructNewCallInst(NewFn, CI, Operands, 1);
break;
}
case Intrinsic::x86_mmx_cvtsi64_si32: {
Value *Operands[1];
// Cast the operand to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
ConstructNewCallInst(NewFn, CI, Operands, 1);
break;
}
case Intrinsic::x86_mmx_vec_init_b:
case Intrinsic::x86_mmx_vec_init_w:
case Intrinsic::x86_mmx_vec_init_d: {
// The return type needs to be changed.
Value *Operands[8];
unsigned NumOps = 0;
switch (NewFn->getIntrinsicID()) {
default: break;
case Intrinsic::x86_mmx_vec_init_b: NumOps = 8; break;
case Intrinsic::x86_mmx_vec_init_w: NumOps = 4; break;
case Intrinsic::x86_mmx_vec_init_d: NumOps = 2; break;
}
switch (NewFn->getIntrinsicID()) {
default: break;
case Intrinsic::x86_mmx_vec_init_b:
Operands[7] = CI->getArgOperand(7);
Operands[6] = CI->getArgOperand(6);
Operands[5] = CI->getArgOperand(5);
Operands[4] = CI->getArgOperand(4);
// FALLTHRU
case Intrinsic::x86_mmx_vec_init_w:
Operands[3] = CI->getArgOperand(3);
Operands[2] = CI->getArgOperand(2);
// FALLTHRU
case Intrinsic::x86_mmx_vec_init_d:
Operands[1] = CI->getArgOperand(1);
Operands[0] = CI->getArgOperand(0);
break;
}
ConstructNewCallInst(NewFn, CI, Operands, NumOps);
break;
}
case Intrinsic::x86_mmx_vec_ext_d: {
Value *Operands[2];
// Cast the operand to the X86 MMX type.
Operands[0] = new BitCastInst(CI->getArgOperand(0),
NewFn->getFunctionType()->getParamType(0),
"upgraded.", CI);
Operands[1] = CI->getArgOperand(1);
ConstructNewCallInst(NewFn, CI, Operands, 2);
break;
}
#endif
case Intrinsic::ctlz:
case Intrinsic::ctpop:
case Intrinsic::cttz: {
// Build a small vector of the original arguments.
SmallVector<Value*, 8> Operands(CS.arg_begin(), CS.arg_end());
// Construct a new CallInst
CallInst *NewCI = CallInst::Create(NewFn, Operands.begin(), Operands.end(),
"upgraded."+CI->getName(), CI);
NewCI->setTailCall(CI->isTailCall());
NewCI->setCallingConv(CI->getCallingConv());
// Handle any uses of the old CallInst.
if (!CI->use_empty()) {
// Check for sign extend parameter attributes on the return values.
bool SrcSExt = NewFn->getAttributes().paramHasAttr(0, Attribute::SExt);
bool DestSExt = F->getAttributes().paramHasAttr(0, Attribute::SExt);
// Construct an appropriate cast from the new return type to the old.
CastInst *RetCast = CastInst::Create(
CastInst::getCastOpcode(NewCI, SrcSExt,
F->getReturnType(),
DestSExt),
NewCI, F->getReturnType(),
NewCI->getName(), CI);
NewCI->moveBefore(RetCast);
// Replace all uses of the old call with the new cast which has the
// correct type.
CI->replaceAllUsesWith(RetCast);
}
// Clean up the old call now that it has been completely upgraded.
CI->eraseFromParent();
}
break;
case Intrinsic::eh_selector:
case Intrinsic::eh_typeid_for: {
// Only the return type changed.
SmallVector<Value*, 8> Operands(CS.arg_begin(), CS.arg_end());
CallInst *NewCI = CallInst::Create(NewFn, Operands.begin(), Operands.end(),
"upgraded." + CI->getName(), CI);
NewCI->setTailCall(CI->isTailCall());
NewCI->setCallingConv(CI->getCallingConv());
// Handle any uses of the old CallInst.
if (!CI->use_empty()) {
// Construct an appropriate cast from the new return type to the old.
CastInst *RetCast =
CastInst::Create(CastInst::getCastOpcode(NewCI, true,
F->getReturnType(), true),
NewCI, F->getReturnType(), NewCI->getName(), CI);
CI->replaceAllUsesWith(RetCast);
}
CI->eraseFromParent();
}
break;
case Intrinsic::memcpy:
case Intrinsic::memmove:
case Intrinsic::memset: {
// Add isVolatile
const llvm::Type *I1Ty = llvm::Type::getInt1Ty(CI->getContext());
Value *Operands[5] = { CI->getArgOperand(0), CI->getArgOperand(1),
CI->getArgOperand(2), CI->getArgOperand(3),
llvm::ConstantInt::get(I1Ty, 0) };
CallInst *NewCI = CallInst::Create(NewFn, Operands, Operands+5,
CI->getName(), CI);
NewCI->setTailCall(CI->isTailCall());
NewCI->setCallingConv(CI->getCallingConv());
// Handle any uses of the old CallInst.
if (!CI->use_empty())
// Replace all uses of the old call with the new cast which has the
// correct type.
CI->replaceAllUsesWith(NewCI);
// Clean up the old call now that it has been completely upgraded.
CI->eraseFromParent();
break;
}
}
}
// This tests each Function to determine if it needs upgrading. When we find
// one we are interested in, we then upgrade all calls to reflect the new
// function.
void llvm::UpgradeCallsToIntrinsic(Function* F) {
assert(F && "Illegal attempt to upgrade a non-existent intrinsic.");
// Upgrade the function and check if it is a totaly new function.
Function* NewFn;
if (UpgradeIntrinsicFunction(F, NewFn)) {
if (NewFn != F) {
// Replace all uses to the old function with the new one if necessary.
for (Value::use_iterator UI = F->use_begin(), UE = F->use_end();
UI != UE; ) {
if (CallInst* CI = dyn_cast<CallInst>(*UI++))
UpgradeIntrinsicCall(CI, NewFn);
}
// Remove old function, no longer used, from the module.
F->eraseFromParent();
}
}
}
/// This function strips all debug info intrinsics, except for llvm.dbg.declare.
/// If an llvm.dbg.declare intrinsic is invalid, then this function simply
/// strips that use.
void llvm::CheckDebugInfoIntrinsics(Module *M) {
if (Function *FuncStart = M->getFunction("llvm.dbg.func.start")) {
while (!FuncStart->use_empty()) {
CallInst *CI = cast<CallInst>(FuncStart->use_back());
CI->eraseFromParent();
}
FuncStart->eraseFromParent();
}
if (Function *StopPoint = M->getFunction("llvm.dbg.stoppoint")) {
while (!StopPoint->use_empty()) {
CallInst *CI = cast<CallInst>(StopPoint->use_back());
CI->eraseFromParent();
}
StopPoint->eraseFromParent();
}
if (Function *RegionStart = M->getFunction("llvm.dbg.region.start")) {
while (!RegionStart->use_empty()) {
CallInst *CI = cast<CallInst>(RegionStart->use_back());
CI->eraseFromParent();
}
RegionStart->eraseFromParent();
}
if (Function *RegionEnd = M->getFunction("llvm.dbg.region.end")) {
while (!RegionEnd->use_empty()) {
CallInst *CI = cast<CallInst>(RegionEnd->use_back());
CI->eraseFromParent();
}
RegionEnd->eraseFromParent();
}
if (Function *Declare = M->getFunction("llvm.dbg.declare")) {
if (!Declare->use_empty()) {
DbgDeclareInst *DDI = cast<DbgDeclareInst>(Declare->use_back());
if (!isa<MDNode>(DDI->getArgOperand(0)) ||
!isa<MDNode>(DDI->getArgOperand(1))) {
while (!Declare->use_empty()) {
CallInst *CI = cast<CallInst>(Declare->use_back());
CI->eraseFromParent();
}
Declare->eraseFromParent();
}
}
}
}
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