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code cleanups only.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130414 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2011-04-28 18:08:21 +00:00
parent 6cf31b0a1a
commit ad3ba6a7de
1 changed files with 30 additions and 34 deletions
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28
lib/Transforms/Scalar/GVN.cpp
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@@ -63,32 +63,30 @@ static cl::opt<bool> EnableLoadPRE("enable-load-pre", cl::init(true));
namespace {
struct Expression {
uint32_t opcode;
const Type* type;
const Type *type;
SmallVector<uint32_t, 4> varargs;
Expression() { }
Expression(uint32_t o) : opcode(o) { }
Expression(uint32_t o = ~2U) : opcode(o) { }
bool operator==(const Expression &other) const {
if (opcode != other.opcode)
return false;
else if (opcode == ~0U || opcode == ~1U)
if (opcode == ~0U || opcode == ~1U)
return true;
else if (type != other.type)
if (type != other.type)
return false;
else if (varargs != other.varargs)
if (varargs != other.varargs)
return false;
return true;
}
};
class ValueTable {
private:
DenseMap<Value*, uint32_t> valueNumbering;
DenseMap<Expression, uint32_t> expressionNumbering;
AliasAnalysis* AA;
MemoryDependenceAnalysis* MD;
DominatorTree* DT;
AliasAnalysis *AA;
MemoryDependenceAnalysis *MD;
DominatorTree *DT;
uint32_t nextValueNumber;
@@ -364,14 +362,14 @@ uint32_t ValueTable::lookup(Value *V) const {
return VI->second;
}
/// clear - Remove all entries from the ValueTable
/// clear - Remove all entries from the ValueTable.
void ValueTable::clear() {
valueNumbering.clear();
expressionNumbering.clear();
nextValueNumber = 1;
}
/// erase - Remove a value from the value numbering
/// erase - Remove a value from the value numbering.
void ValueTable::erase(Value *V) {
valueNumbering.erase(V);
}
@@ -393,9 +391,7 @@ namespace {
class GVN : public FunctionPass {
bool NoLoads;
public:
MemoryDependenceAnalysis *MD;
private:
DominatorTree *DT;
const TargetData *TD;
@@ -431,6 +427,7 @@ namespace {
const TargetData *getTargetData() const { return TD; }
DominatorTree &getDominatorTree() const { return *DT; }
AliasAnalysis *getAliasAnalysis() const { return VN.getAliasAnalysis(); }
MemoryDependenceAnalysis &getMemDep() const { return *MD; }
private:
/// addToLeaderTable - Push a new Value to the LeaderTable onto the list for
/// its value number.
@@ -969,8 +966,7 @@ static Value *GetLoadValueForLoad(LoadInst *SrcVal, unsigned Offset,
NewLoadSize*8-SrcVal->getType()->getPrimitiveSizeInBits());
RV = Builder.CreateTrunc(RV, SrcVal->getType());
SrcVal->replaceAllUsesWith(RV);
gvn.MD->removeInstruction(SrcVal);
//gvn.markInstructionForDeletion(SrcVal);
gvn.getMemDep().removeInstruction(SrcVal);
SrcVal = NewLoad;
}