llvm-svn: 123358

Add a unnamed_addr bit to global variables and functions. This will be used
to indicate that the address is not significant and therefore the constant
or function can be merged with others.

If an optimization pass can show that an address is not used, it can set this.

Examples of things that can have this set by the FE are globals created to
hold string literals and C++ constructors.

Adding unnamed_addr to a non-const global should have no effect unless
an optimization can transform that global into a constant.

Aliases are not allowed to have unnamed_addr since I couldn't figure
out any use for it.

llvm-svn: 123063

llvm-svn: 123026

llvm-svn: 122948

llvm-svn: 122947

llvm-svn: 122885

entities easier.

llvm-svn: 122880

llvm-svn: 122879

llvm-svn: 122812

llvm-svn: 122613

new gcc warning that complains on self-assignments and
self-initializations.

llvm-svn: 122458

This implementation already exists as ConnectedVNInfoEqClasses in
LiveInterval.cpp, and it seems to be generally useful to have a light-weight way
of forming equivalence classes of small integers.

IntEqClasses doesn't allow enumeration of the elements in a class.

llvm-svn: 122293

monotonic keys.

llvm-svn: 122093

moves the iterator to end(), and it is valid to call it on end().

That means it is valid to call advanceTo() with any monotonic key sequence.

llvm-svn: 122092

llvm-svn: 122081

llvm-svn: 122019

llvm-svn: 121995

via their return value instead of an out parameter.

llvm-svn: 121149

llvm-svn: 121127

zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.

llvm-svn: 121120

llvm-svn: 121117

namespace. None of them return anything except for success anyway. These will be
converted to returning their result soon.

llvm-svn: 121109

llvm-svn: 121108

llvm-svn: 120989

llvm-svn: 120888

editing of the current interval.

These methods may cause coalescing, there are corresponding set*Unchecked
methods for editing without coalescing. The non-coalescing methods are useful
for applying monotonic transforms to all keys or values in a map without
accidentally coalescing transformed and untransformed intervals.

llvm-svn: 120829

llvm-svn: 120817

llvm-svn: 120803

llvm-svn: 120785

a file exists when it shouldn't.

llvm-svn: 120784

llvm-svn: 120776

llvm-svn: 120616

llvm-svn: 120600

llvm-svn: 120590

setAllBits(), setBit(unsigned), etc.

llvm-svn: 120564

llvm-svn: 120560

Support/PathV2: Add has_{root_path,root_name,root_directory,parent_path,filename,stem,extension} implementation.

llvm-svn: 120559

I'm going to replace this all anyway with a proper table and separated tests
when done.

llvm-svn: 120558

llvm-svn: 120550

llvm-svn: 120547