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Make the unary operator case a bit faster, since casts are the only kind of unary operation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37857 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2007-07-03 19:01:42 +00:00
parent 216394f9b3
commit 3d6fac3993
1 changed files with 4 additions and 10 deletions
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14
lib/Transforms/Scalar/GVNPRE.cpp
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@ -630,9 +630,7 @@ Value* GVNPRE::phi_translate(Value* V, BasicBlock* pred, BasicBlock* succ) {
return 0;
// Unary Operations
if (isa<CastInst>(V)) {
User* U = cast<User>(V);
if (CastInst* U = dyn_cast<CastInst>(V)) {
Value* newOp1 = 0;
if (isa<Instruction>(U->getOperand(0)))
newOp1 = phi_translate(U->getOperand(0), pred, succ);
@ -817,9 +815,7 @@ void GVNPRE::clean(SmallPtrSet<Value*, 16>& set, BitVector& presentInSet) {
Value* v = worklist[i];
// Handle unary ops
if (isa<CastInst>(v)) {
User* U = cast<User>(v);
if (CastInst* U = dyn_cast<CastInst>(v)) {
bool lhsValid = !isa<Instruction>(U->getOperand(0));
lhsValid |= presentInSet.test(VN.lookup(U->getOperand(0)));
if (lhsValid)
@ -892,8 +888,7 @@ void GVNPRE::topo_sort(SmallPtrSet<Value*, 16>& set, std::vector<Value*>& vec) {
Value* e = stack.back();
// Handle unary ops
if (isa<CastInst>(e)) {
User* U = cast<User>(e);
if (CastInst* U = dyn_cast<CastInst>(e)) {
Value* l = find_leader(set, VN.lookup(U->getOperand(0)));
if (l != 0 && isa<Instruction>(l) &&
@ -1054,8 +1049,7 @@ void GVNPRE::buildsets_availout(BasicBlock::iterator I,
currPhis.insert(p);
// Handle unary ops
} else if (isa<CastInst>(I)) {
User* U = cast<User>(I);
} else if (CastInst* U = dyn_cast<CastInst>(I)) {
Value* leftValue = U->getOperand(0);
unsigned num = VN.lookup_or_add(U);