This patch forbids implicit conversion of DenseMap::const_iterator to
DenseMap::iterator which was possible because DenseMapIterator inherited
(publicly) from DenseMapConstIterator. Conversion the other way around is now
allowed as one may expect.

The template DenseMapConstIterator is removed and the template parameter
IsConst which specifies whether the iterator is constant is added to
DenseMapIterator.

Actually IsConst parameter is not necessary since the constness can be
determined from KeyT but this is not relevant to the fix and can be addressed
later.

Patch by Victor Zverovich!

llvm-svn: 86636

llvm-svn: 86635

llvm-svn: 86634

llvm-svn: 86633

llvm-svn: 86632

continuing after invalid PCH loads.

llvm-svn: 86631

Also, Stringrefify some more MemoryBuffer functions, and add two performance FIXMEs.

llvm-svn: 86630

llvm-svn: 86629

Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies. 

llvm-svn: 86628

simplification, this handles the foldable fcmp x,x cases among many others.

llvm-svn: 86627

and ConstantFoldCompareInstOperands.

llvm-svn: 86626

llvm-svn: 86625

Simplify[IF]Cmp pieces.  Add some predicates to CmpInst to 
determine whether a predicate is fp or int.

llvm-svn: 86624

llvm-svn: 86623

not necessary.

llvm-svn: 86621

llvm-svn: 86620

individual operands instead of taking a temporary array

llvm-svn: 86619

value.

llvm-svn: 86618

ApplyHeaderSearchOptions now.

llvm-svn: 86617

llvm-svn: 86616

llvm-svn: 86614

takes decimated instructions and applies identities to them.  This
is pretty minimal at this point, but I plan to pull some instcombine
logic out into these and similar routines.

llvm-svn: 86613

CompilerInvocation.

llvm-svn: 86612

llvm-svn: 86611

llvm-svn: 86610

Change clang-cc to expect that all inputs have the same language (so we can only construct a single LangInfo). This matches how it is used in practice (since the compiler only it invokes it for one file at a time).

llvm-svn: 86609

llvm-svn: 86608

llvm-svn: 86607

llvm-svn: 86606

llvm-svn: 86604

simplifies instruction users of PHIs when the phi is eliminated.  This
will be moved to transforms/utils after some other refactoring.

llvm-svn: 86603

llvm-svn: 86602

llvm-svn: 86601

llvm-svn: 86600

llvm-svn: 86599

llvm-svn: 86598

warning, to match gcc. It used to be warning, so
better keep it a warning (it broke a certain project).

llvm-svn: 86597

ArrayType>()) does not instantiate. Update all callers that used this
unsafe feature to use the appropriate ASTContext::getAs*ArrayType method.

llvm-svn: 86596

llvm-svn: 86595

llvm-svn: 86592