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Remove useless Tag enumeration.

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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
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15
include/llvm/Use.h
View File

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

4
lib/VMCore/Use.cpp
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@ -135,8 +135,8 @@ void Use::zap(Use *Start, const Use *Stop, bool del) {
User *Use::getUser() const { User *Use::getUser() const {
const Use *End = getImpliedUser(); const Use *End = getImpliedUser();
const PointerIntPair<User*, 1, Tag>& ref( const PointerIntPair<User*, 1, unsigned>&
static_cast<const AugmentedUse*>(End - 1)->ref); ref(static_cast<const AugmentedUse*>(End - 1)->ref);
User *She = ref.getPointer(); User *She = ref.getPointer();
return ref.getInt() return ref.getInt()
? She ? She

5
lib/VMCore/User.cpp
View File

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