llvm-project/llvm/lib/ExecutionEngine
Chris Lattner b1ed91f397 Land the long talked about "type system rewrite" patch. This
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
2011-07-09 17:41:24 +00:00
..
Interpreter Land the long talked about "type system rewrite" patch. This 2011-07-09 17:41:24 +00:00
JIT ExecutionEngine: move createJIT() definition (v2) 2011-05-13 22:02:53 +00:00
MCJIT Avoid a Twine that referenced a tmp (which proceded to go out of scope before 2011-05-19 00:45:05 +00:00
RuntimeDyld Be a bit more permissive about symbols we don't understand. Just skip them 2011-05-13 23:11:30 +00:00
CMakeLists.txt ExecutionEngine: fix JIT/MCJIT selectTarget() duplication (v2) 2011-05-13 21:36:16 +00:00
ExecutionEngine.cpp ExecutionEngine: move createJIT() definition (v2) 2011-05-13 22:02:53 +00:00
ExecutionEngineBindings.cpp Fix indentation. 2010-07-19 09:36:45 +00:00
Makefile Library-ize the dyld components of llvm-rtdyld. 2011-03-21 22:15:52 +00:00
TargetSelect.cpp Fix the ridiculous SubtargetFeatures API where it implicitly expects CPU name to 2011-06-30 01:53:36 +00:00