llvm-svn: 134831

patch brings numerous advantages to LLVM.  One way to look at it
is through diffstat:
 109 files changed, 3005 insertions(+), 5906 deletions(-)

Removing almost 3K lines of code is a good thing.  Other advantages
include:

1. Value::getType() is a simple load that can be CSE'd, not a mutating
   union-find operation.
2. Types a uniqued and never move once created, defining away PATypeHolder.
3. Structs can be "named" now, and their name is part of the identity that
   uniques them.  This means that the compiler doesn't merge them structurally
   which makes the IR much less confusing.
4. Now that there is no way to get a cycle in a type graph without a named
   struct type, "upreferences" go away.
5. Type refinement is completely gone, which should make LTO much MUCH faster
   in some common cases with C++ code.
6. Types are now generally immutable, so we can use "Type *" instead 
   "const Type *" everywhere.

Downsides of this patch are that it removes some functions from the C API,
so people using those will have to upgrade to (not yet added) new API.  
"LLVM 3.0" is the right time to do this.

There are still some cleanups pending after this, this patch is large enough
as-is.

llvm-svn: 134829

llvm-svn: 134827

llvm-svn: 134826

breakpoint. I haven't been able to see this breakpoint get hit yet
so I still have testing I need to do with the kernel dynamic loader.

llvm-svn: 134825

thanks to a nice clang warning!

llvm-svn: 134824

variable where we were using a static cast when we shouldn't have been.
Fixed another array related issue where we weren't looking through a typedef.

llvm-svn: 134823

llvm-svn: 134822

used by the new bitcode reader.

llvm-svn: 134821

llvm-svn: 134820

llvm-svn: 134819

llvm-svn: 134818

llvm-svn: 134815

With Lit (not bash) in a test, multiple redirects >%t might open(%t, "w") multiple. It can be avoided if latter redirect is >>%t.

It might work even if ">/dev/null" were used.

llvm-svn: 134814

expecting so much concentrated oddity on what seemed like a
trivial feature.  Thanks to François Pichet for doing the
MSVC legwork here.

llvm-svn: 134813

llvm-svn: 134812

llvm-svn: 134811

llvm-svn: 134809

llvm-svn: 134808

llvm-svn: 134800

llvm-svn: 134797

CPU, and feature string. Parsing some asm directives can change
subtarget state (e.g. .code 16) and it must be reflected in other
modules (e.g. MCCodeEmitter). That is, the MCSubtargetInfo instance
must be shared.

llvm-svn: 134795

glibc, for instance, it's a const char *.

llvm-svn: 134787

isl/map.h is included in OpenScopExporter.cpp and
OpenScopImporter.cpp

llvm-svn: 134786

llvm-svn: 134785

  - Emit default-initialization of arrays that were partially initialized
    with initializer lists with a loop, rather than emitting the default
    initializer N times;
  - support destroying VLAs of non-trivial type, although this is not
    yet exposed to users; and
  - support the partial destruction of arrays initialized with
    initializer lists when an initializer throws an exception.

llvm-svn: 134784

llvm-svn: 134783

Spills should be hoisted out of loops, but we don't want to hoist them
to dominating blocks at the same loop depth. That could cause the spills
to be executed more often.

llvm-svn: 134782

traits.

To the best of my knowledge, this will not break the ABI for Apple.
However, it does introduce three publicly visible (although with
reserved name) functions that will fail to link against the just-shipped
Apple version of libc++. Since they are not used in any inline
functions, no actual breakage should occur.

If Howard doesn't want to put undefined functions (even internal ones)
into a header, they could be surrounded by additional conditional
compilation.

llvm-svn: 134781

llvm-svn: 134780

shared library, etc) and strata (user/kernel) from an object file. This will
help with plug-in and platform selection when given a new binary with the
"target create <file>" command.

llvm-svn: 134779

llvm-svn: 134778

Added recognition for signed add/sub/mul with overflow intrinsics to GVN as per Chris and Frits suggestion.

llvm-svn: 134777

Try to move spills as early as possible in their basic block. This can
help eliminate interferences by shortening the live range being
spilled.

This fixes PR10221.

llvm-svn: 134776

llvm-svn: 134775

llvm-svn: 134774

Really force on 64bit for 64-bit targets.  Should fix remaining failures on unknown x86/non-x86 targets.

llvm-svn: 134773

llvm-svn: 134772

llvm-svn: 134771

Note that because we don't usually touch the MMX registers anyway, all -mno-mmx needs to do is tweak the x86-32 calling convention a little for vectors that look like MMX vectors, and prevent the definition of __MMX__.

clang doesn't actually stop the user from using MMX inline asm operands or MMX builtins in -mno-mmx mode; as a QOI issue, it would be nice to diagnose, but I doubt it really matters much.

<rdar://problem/9694837>

llvm-svn: 134770