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Simplifying use_iterators by dereferencing

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is not a good idea. The codebase does not depend
in this any more, and it may introduce hidden
runtime cost. If you get compile errors, please
dereference your iterator before passing to cast<>
(and friends).

Also: please consider caching the result of
operator* and reusing that instead of dereferencing
many times.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109220 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2010-07-23 08:36:07 +00:00
parent 7d455eb7a4
commit 4a3bb24179
1 changed files with 0 additions and 24 deletions
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24
include/llvm/Use.h
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@ -210,30 +210,6 @@ public:
unsigned getOperandNo() const;
};
template<> struct simplify_type<value_use_iterator<User> > {
typedef User* SimpleType;
static SimpleType getSimplifiedValue(const value_use_iterator<User> &Val) {
return *Val;
}
};
template<> struct simplify_type<const value_use_iterator<User> >
: public simplify_type<value_use_iterator<User> > {};
template<> struct simplify_type<value_use_iterator<const User> > {
typedef const User* SimpleType;
static SimpleType getSimplifiedValue(const
value_use_iterator<const User> &Val) {
return *Val;
}
};
template<> struct simplify_type<const value_use_iterator<const User> >
: public simplify_type<value_use_iterator<const User> > {};
} // End llvm namespace
#endif