test for that. With this change, test/CodeGen/X86/codegen-dce.ll no longer finds
any instructions to DCE, so delete the test.

Also renamed J and JP to I and IP in RecursivelyDeleteDeadPHINode.

llvm-svn: 126088

by Andrew Clinton!

llvm-svn: 126077

on the host OS.  Reviewed by dgregor.

llvm-svn: 125406

by Clang.

llvm-svn: 124871

the loop.

llvm-svn: 124784

may be useful to understand "none", this is not the place for it.  Tweak
the fix to Normalize while there: the fix added in 123990 works correctly,
but I like this way better.  Finally, now that Triple understands some
non-trivial environment values, teach the unittests about them.

llvm-svn: 124720

Don't infinitely recurse!  Patch by Marius Wachtler!

llvm-svn: 124366

Clang was not parsing target triples involving EABI and was generating wrong IR (wrong PCS) and passing the wrong information down llc via the target-triple printed in IR. I've fixed this by adding the parsing of EABI into LLVM's Triple class and using it to choose the correct PCS in Clang's Tools. A Clang patch is on its way to use this infrastructure.

llvm-svn: 123990

llvm-svn: 123546

llvm-svn: 123529

llvm-svn: 123377

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