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Finegrainify namespacification 

Add capability to represent volatile AliasSet's
Propagate this information from loads&stores into the aliassets

llvm-svn: 10457
This commit is contained in:
Chris Lattner 2003-12-14 04:52:11 +00:00
parent 310da97240
commit 0a14060ce2
1 changed files with 12 additions and 9 deletions
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21
llvm/lib/Analysis/AliasSetTracker.cpp
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@ -20,8 +20,7 @@
#include "llvm/Target/TargetData.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Support/InstIterator.h"
namespace llvm {
using namespace llvm;
/// mergeSetIn - Merge the specified alias set into this alias set...
///
@ -190,16 +189,21 @@ AliasSet &AliasSetTracker::getAliasSetForPointer(Value *Pointer, unsigned Size){
}
void AliasSetTracker::add(LoadInst *LI) {
addPointer(LI->getOperand(0),
AA.getTargetData().getTypeSize(LI->getType()), AliasSet::Refs);
AliasSet &AS =
addPointer(LI->getOperand(0),
AA.getTargetData().getTypeSize(LI->getType()), AliasSet::Refs);
if (LI->isVolatile()) AS.setVolatile();
}
void AliasSetTracker::add(StoreInst *SI) {
addPointer(SI->getOperand(1),
AA.getTargetData().getTypeSize(SI->getOperand(0)->getType()),
AliasSet::Mods);
AliasSet &AS =
addPointer(SI->getOperand(1),
AA.getTargetData().getTypeSize(SI->getOperand(0)->getType()),
AliasSet::Mods);
if (SI->isVolatile()) AS.setVolatile();
}
void AliasSetTracker::add(CallSite CS) {
AliasSet *AS = findAliasSetForCallSite(CS);
if (!AS) {
@ -263,6 +267,7 @@ void AliasSet::print(std::ostream &OS) const {
case ModRef : OS << "Mod/Ref "; break;
default: assert(0 && "Bad value for AccessTy!");
}
if (isVolatile()) OS << "[volatile] ";
if (Forward)
OS << " forwarding to " << (void*)Forward;
@ -329,5 +334,3 @@ namespace {
RegisterPass<AliasSetPrinter> X("print-alias-sets", "Alias Set Printer",
PassInfo::Analysis | PassInfo::Optimization);
}
} // End llvm namespace