Remove useless Tag enumeration.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123623 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jay Foad 2011-01-17 15:18:06 +00:00
parent 9dcb98cbe7
commit 0d1941a46f
3 changed files with 10 additions and 14 deletions

View File

@ -25,9 +25,7 @@
#ifndef LLVM_USE_H
#define LLVM_USE_H
#include "llvm/Support/Casting.h"
#include "llvm/ADT/PointerIntPair.h"
#include <cstddef>
#include <iterator>
namespace llvm {
@ -36,9 +34,6 @@ class Value;
class User;
class Use;
/// Tag - generic tag type for (at least 32 bit) pointers
enum Tag { noTag, tagOne, tagTwo, tagThree };
// Use** is only 4-byte aligned.
template<>
class PointerLikeTypeTraits<Use**> {
@ -71,10 +66,10 @@ private:
if (Val) removeFromList();
}
enum PrevPtrTag { zeroDigitTag = noTag
, oneDigitTag = tagOne
, stopTag = tagTwo
, fullStopTag = tagThree };
enum PrevPtrTag { zeroDigitTag
, oneDigitTag
, stopTag
, fullStopTag };
/// Constructor
Use(PrevPtrTag tag) : Val(0) {
@ -215,7 +210,7 @@ public:
//===----------------------------------------------------------------------===//
struct AugmentedUse : public Use {
PointerIntPair<User*, 1, Tag> ref;
PointerIntPair<User*, 1, unsigned> ref;
AugmentedUse(); // not implemented
};

View File

@ -135,8 +135,8 @@ void Use::zap(Use *Start, const Use *Stop, bool del) {
User *Use::getUser() const {
const Use *End = getImpliedUser();
const PointerIntPair<User*, 1, Tag>& ref(
static_cast<const AugmentedUse*>(End - 1)->ref);
const PointerIntPair<User*, 1, unsigned>&
ref(static_cast<const AugmentedUse*>(End - 1)->ref);
User *She = ref.getPointer();
return ref.getInt()
? She

View File

@ -44,9 +44,10 @@ Use *User::allocHungoffUses(unsigned N) const {
+ sizeof(AugmentedUse)
- sizeof(Use)));
Use *End = Begin + N;
PointerIntPair<User*, 1, Tag>& ref(static_cast<AugmentedUse&>(End[-1]).ref);
PointerIntPair<User*, 1, unsigned>&
ref(static_cast<AugmentedUse&>(End[-1]).ref);
ref.setPointer(const_cast<User*>(this));
ref.setInt(tagOne);
ref.setInt(1);
return Use::initTags(Begin, End);
}