//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Chandler Carruth and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
using namespace llvm;
-static Function* UpgradeIntrinsicFunction1(Function *F) {
+static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
assert(F && "Illegal to upgrade a non-existent Function.");
// Get the Function's name.
// 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 0;
+ return false;
Module *M = F->getParent();
switch (Name[5]) {
if (delim != std::string::npos) {
// Construct the new name as 'llvm.bswap' + '.i*'
F->setName(Name.substr(0,10)+Name.substr(delim));
- return F;
+ NewFn = F;
+ return true;
}
}
break;
// 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.
- return cast<Function>(M->getOrInsertFunction(Name,
- FTy->getParamType(0),
- FTy->getParamType(0),
- (Type *)0));
+ NewFn = cast<Function>(M->getOrInsertFunction(Name,
+ FTy->getParamType(0),
+ FTy->getParamType(0),
+ (Type *)0));
+ return true;
}
break;
if (delim != std::string::npos) {
// Construct a new name as 'llvm.part.select' + '.i*'
F->setName(Name.substr(0,16)+Name.substr(delim));
- return F;
+ NewFn = F;
+ return true;
}
break;
}
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));
- return F;
+ NewFn = F;
+ return true;
}
break;
}
// 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.
- return cast<Function>(M->getOrInsertFunction(Name,
- FTy->getReturnType(),
- FTy->getParamType(0),
- VT,
- (Type *)0));
+ NewFn = cast<Function>(M->getOrInsertFunction(Name,
+ FTy->getReturnType(),
+ FTy->getParamType(0),
+ VT,
+ (Type *)0));
+ return true;
+ } else if (Name.compare(5,16,"x86.sse2.movl.dq",16) == 0) {
+ // Calls to this intrinsic are transformed into ShuffleVector's.
+ NewFn = 0;
+ return true;
}
+
break;
}
// 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 0;
+ return false;
}
-Function* llvm::UpgradeIntrinsicFunction(Function *F) {
- Function *Upgraded = UpgradeIntrinsicFunction1(F);
+bool llvm::UpgradeIntrinsicFunction(Function *F, Function *&NewFn) {
+ NewFn = 0;
+ bool Upgraded = UpgradeIntrinsicFunction1(F, NewFn);
// Upgrade intrinsic attributes. This does not change the function.
- if (Upgraded)
- F = Upgraded;
+ if (NewFn)
+ F = NewFn;
if (unsigned id = F->getIntrinsicID(true))
F->setParamAttrs(Intrinsic::getParamAttrs((Intrinsic::ID)id));
return Upgraded;
// 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) {
- assert(NewFn && "Cannot upgrade an intrinsic call without a new function.");
-
Function *F = CI->getCalledFunction();
assert(F && "CallInst has no function associated with it.");
-
+
+ if (!NewFn) {
+ if (strcmp(F->getNameStart(), "llvm.x86.sse2.movl.dq") == 0) {
+ std::vector<Constant*> Idxs;
+ Constant *Zero = ConstantInt::get(Type::Int32Ty, 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::Int32Ty, 4));
+ Idxs.push_back(ConstantInt::get(Type::Int32Ty, 5));
+ Idxs.push_back(ConstantInt::get(Type::Int32Ty, 2));
+ Idxs.push_back(ConstantInt::get(Type::Int32Ty, 3));
+ Value *Mask = ConstantVector::get(Idxs);
+ ShuffleVectorInst *SI = new ShuffleVectorInst(ZeroV, CI->getOperand(1),
+ Mask, "upgraded", CI);
+
+ // 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 {
+ assert(0 && "Unknown function for CallInst upgrade.");
+ }
+ return;
+ }
+
switch(NewFn->getIntrinsicID()) {
default: assert(0 && "Unknown function for CallInst upgrade.");
case Intrinsic::x86_mmx_psll_d:
assert(F && "Illegal attempt to upgrade a non-existent intrinsic.");
// Upgrade the function and check if it is a totaly new function.
- if (Function* NewFn = UpgradeIntrinsicFunction(F)) {
+ 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();
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