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Autoupgrade x86.sse2.loadh.pd and x86.sse2.loadl.pd.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51523 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-05-24 00:08:39 +00:00
parent 999dbe6bbc
commit 4797f61657
3 changed files with 52 additions and 19 deletions
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69
lib/VMCore/AutoUpgrade.cpp
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@ -148,8 +148,10 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
VT, VT,
(Type *)0)); (Type *)0));
return true; return true;
} else if (Name.compare(5,16,"x86.sse2.movl.dq",16) == 0) { } else if (Name.compare(5,17,"x86.sse2.loadh.pd",17) == 0 ||
// Calls to this intrinsic are transformed into ShuffleVector's. Name.compare(5,17,"x86.sse2.loadl.pd",17) == 0 ||
Name.compare(5,16,"x86.sse2.movl.dq",16) == 0) {
// Calls to these intrinsics are transformed into ShuffleVector's.
NewFn = 0; NewFn = 0;
return true; return true;
} }
@ -184,23 +186,52 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
assert(F && "CallInst has no function associated with it."); assert(F && "CallInst has no function associated with it.");
if (!NewFn) { if (!NewFn) {
if (strcmp(F->getNameStart(), "llvm.x86.sse2.movl.dq") == 0) { bool isLoadH = false, isLoadL = false, isMovL = false;
std::vector<Constant*> Idxs; if (strcmp(F->getNameStart(), "llvm.x86.sse2.loadh.pd") == 0)
Constant *Zero = ConstantInt::get(Type::Int32Ty, 0); isLoadH = true;
Idxs.push_back(Zero); else if (strcmp(F->getNameStart(), "llvm.x86.sse2.loadl.pd") == 0)
Idxs.push_back(Zero); isLoadL = true;
Idxs.push_back(Zero); else if (strcmp(F->getNameStart(), "llvm.x86.sse2.movl.dq") == 0)
Idxs.push_back(Zero); isMovL = true;
Value *ZeroV = ConstantVector::get(Idxs);
Idxs.clear(); if (isLoadH || isLoadL || isMovL) {
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 4)); std::vector<Constant*> Idxs;
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 5)); Value *Op0 = CI->getOperand(1);
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 2)); ShuffleVectorInst *SI;
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 3)); if (isLoadH || isLoadL) {
Value *Mask = ConstantVector::get(Idxs); Value *Op1 = UndefValue::get(Op0->getType());
ShuffleVectorInst *SI = new ShuffleVectorInst(ZeroV, CI->getOperand(1), Value *Addr = new BitCastInst(CI->getOperand(2),
Mask, "upgraded", CI); PointerType::getUnqual(Type::DoubleTy),
"upgraded.", CI);
Value *Load = new LoadInst(Addr, "upgraded.", false, 8, CI);
Value *Idx = ConstantInt::get(Type::Int32Ty, 0);
Op1 = InsertElementInst::Create(Op1, Load, Idx, "upgraded.", CI);
if (isLoadH) {
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 0));
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 2));
} else {
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 2));
Idxs.push_back(ConstantInt::get(Type::Int32Ty, 1));
}
Value *Mask = ConstantVector::get(Idxs);
SI = new ShuffleVectorInst(Op0, Op1, Mask, "upgraded.", CI);
} else {
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);
SI = new ShuffleVectorInst(ZeroV, Op0, Mask, "upgraded.", CI);
}
// Handle any uses of the old CallInst. // Handle any uses of the old CallInst.
if (!CI->use_empty()) if (!CI->use_empty())
@ -233,7 +264,7 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
// Cast the second parameter to the correct type. // Cast the second parameter to the correct type.
BitCastInst *BC = new BitCastInst(CI->getOperand(2), BitCastInst *BC = new BitCastInst(CI->getOperand(2),
NewFn->getFunctionType()->getParamType(1), NewFn->getFunctionType()->getParamType(1),
"upgraded", CI); "upgraded.", CI);
Operands[1] = BC; Operands[1] = BC;
// Construct a new CallInst // Construct a new CallInst

2
test/Bitcode/sse2_loadl_pd.ll Normal file
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@ -0,0 +1,2 @@
; RUN: llvm-dis < %s.bc | not grep {i32 @llvm\\.loadl.pd}
; RUN: llvm-dis < %s.bc | grep shufflevector

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test/Bitcode/sse2_loadl_pd.ll.bc Normal file
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