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LoopVectorize: Simplify code. No functionality change.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220405 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2014-10-22 19:13:54 +00:00
parent 0b70f777bb
commit 1afcd6b4ff
1 changed files with 7 additions and 19 deletions
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26
lib/Transforms/Vectorize/LoopVectorize.cpp
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@ -1026,8 +1026,6 @@ class LoopVectorizeHints {
Hint Interleave;
/// Vectorization forced
Hint Force;
/// Array to help iterating through all hints.
Hint *Hints[3]; // avoiding initialisation due to MSVC2012
/// Return the loop metadata prefix.
static StringRef Prefix() { return "llvm.loop."; }
@ -1044,11 +1042,6 @@ public:
Interleave("interleave.count", DisableInterleaving, HK_UNROLL),
Force("vectorize.enable", FK_Undefined, HK_FORCE),
TheLoop(L) {
// FIXME: Move this up initialisation when MSVC requirement is 2013+
Hints[0] = &Width;
Hints[1] = &Interleave;
Hints[2] = &Force;
// Populate values with existing loop metadata.
getHintsFromMetadata();
@ -1063,13 +1056,8 @@ public:
/// Mark the loop L as already vectorized by setting the width to 1.
void setAlreadyVectorized() {
Width.Value = Interleave.Value = 1;
// FIXME: Change all lines below for this when we can use MSVC 2013+
//writeHintsToMetadata({ Width, Unroll });
std::vector<Hint> hints;
hints.reserve(2);
hints.emplace_back(Width);
hints.emplace_back(Interleave);
writeHintsToMetadata(std::move(hints));
Hint Hints[] = {Width, Interleave};
writeHintsToMetadata(Hints);
}
/// Dumps all the hint information.
@ -1144,6 +1132,7 @@ private:
if (!C) return;
unsigned Val = C->getZExtValue();
Hint *Hints[] = {&Width, &Interleave, &Force};
for (auto H : Hints) {
if (Name == H->Name) {
if (H->validate(Val))
@ -1158,14 +1147,13 @@ private:
/// Create a new hint from name / value pair.
MDNode *createHintMetadata(StringRef Name, unsigned V) const {
LLVMContext &Context = TheLoop->getHeader()->getContext();
SmallVector<Value*, 2> Vals;
Vals.push_back(MDString::get(Context, Name));
Vals.push_back(ConstantInt::get(Type::getInt32Ty(Context), V));
Value *Vals[] = {MDString::get(Context, Name),
ConstantInt::get(Type::getInt32Ty(Context), V)};
return MDNode::get(Context, Vals);
}
/// Matches metadata with hint name.
bool matchesHintMetadataName(MDNode *Node, std::vector<Hint> &HintTypes) {
bool matchesHintMetadataName(MDNode *Node, ArrayRef<Hint> HintTypes) {
MDString* Name = dyn_cast<MDString>(Node->getOperand(0));
if (!Name)
return false;
@ -1177,7 +1165,7 @@ private:
}
/// Sets current hints into loop metadata, keeping other values intact.
void writeHintsToMetadata(std::vector<Hint> HintTypes) {
void writeHintsToMetadata(ArrayRef<Hint> HintTypes) {
if (HintTypes.size() == 0)
return;