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tidy up 

llvm-svn: 82488
This commit is contained in:
Chris Lattner 2009-09-21 22:26:02 +00:00
parent 255f416470
commit e3ce1e2a37
1 changed files with 8 additions and 7 deletions
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15
llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
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@ -41,7 +41,6 @@ STATISTIC(NumSingleStore, "Number of alloca's promoted with a single store");
STATISTIC(NumDeadAlloca, "Number of dead alloca's removed");
STATISTIC(NumPHIInsert, "Number of PHI nodes inserted");
// Provide DenseMapInfo for all pointers.
namespace llvm {
template<>
struct DenseMapInfo<std::pair<BasicBlock*, unsigned> > {
@ -294,10 +293,9 @@ namespace {
// As we scan the uses of the alloca instruction, keep track of stores,
// and decide whether all of the loads and stores to the alloca are within
// the same basic block.
for (Value::use_iterator U = AI->use_begin(), E = AI->use_end();
U != E;) {
Instruction *User = cast<Instruction>(*U);
++U;
for (Value::use_iterator UI = AI->use_begin(), E = AI->use_end();
UI != E;) {
Instruction *User = cast<Instruction>(*UI++);
if (BitCastInst *BC = dyn_cast<BitCastInst>(User)) {
// Remove any uses of this alloca in DbgInfoInstrinsics.
assert(BC->hasOneUse() && "Unexpected alloca uses!");
@ -306,7 +304,8 @@ namespace {
BC->eraseFromParent();
continue;
}
else if (StoreInst *SI = dyn_cast<StoreInst>(User)) {
if (StoreInst *SI = dyn_cast<StoreInst>(User)) {
// Remember the basic blocks which define new values for the alloca
DefiningBlocks.push_back(SI->getParent());
AllocaPointerVal = SI->getOperand(0);
@ -603,7 +602,9 @@ ComputeLiveInBlocks(AllocaInst *AI, AllocaInfo &Info,
LiveInBlockWorklist.pop_back();
--i, --e;
break;
} else if (LoadInst *LI = dyn_cast<LoadInst>(I)) {
}
if (LoadInst *LI = dyn_cast<LoadInst>(I)) {
if (LI->getOperand(0) != AI) continue;
// Okay, we found a load before a store to the alloca. It is actually