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Chris Lattner a106725fc5 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
..
X86 Move platform-dependent test to appropriate directory. 2011-05-13 19:45:05 +00:00
2002-01-31-CallGraph.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2002-02-24-InlineBrokePHINodes.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2002-03-11-ConstPropCrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-02-19-LoopInfoNestingBug.ll Update these tests to match what Loop::print now prints. 2009-10-24 23:52:07 +00:00
2004-08-16-PackedConstantInlineStore.ll Remove llvm-upgrade and update tests. 2008-02-19 01:44:26 +00:00
2004-08-16-PackedGlobalConstant.ll Remove llvm-upgrade and update tests. 2008-02-19 01:44:26 +00:00
2004-08-16-PackedSelect.ll Split the Add, Sub, and Mul instruction opcodes into separate 2009-06-04 22:49:04 +00:00
2004-08-16-PackedSimple.ll Split the Add, Sub, and Mul instruction opcodes into separate 2009-06-04 22:49:04 +00:00
2004-08-20-PackedControlFlow.ll Split the Add, Sub, and Mul instruction opcodes into separate 2009-06-04 22:49:04 +00:00
2006-02-05-PassManager.ll Eliminate more redundant llvm-as calls. 2009-09-11 18:17:12 +00:00
2007-04-24-eliminate-mostly-empty-blocks.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2007-06-05-PassID.ll -disable-output is no longer needed with -analyze. 2010-01-26 19:25:59 +00:00
2007-06-28-PassManager.ll -disable-output is no longer needed with -analyze. 2010-01-26 19:25:59 +00:00
2007-09-10-PassManager.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2008-02-14-PassManager.ll Delete useless trailing semicolons. 2010-01-05 17:55:26 +00:00
2008-06-04-FieldSizeInPacked.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2008-10-06-RemoveDeadPass.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2008-10-15-MissingSpace.ll Testcase for PR2894. 2008-10-15 22:34:34 +00:00
2009-03-31-CallGraph.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2009-06-05-no-implicit-float.ll fix bogus test 2010-01-09 19:24:49 +00:00
2009-09-14-function-elements.ll Forbid arrays of function-type and structures with function-typed fields. 2009-09-15 06:28:26 +00:00
2010-05-06-Printer.ll Don't write a file named "&1". 2010-06-18 01:49:17 +00:00
close-stderr.ll test/Other/close-stderr.ll: Require the feature 'shell'. It is not executable on Win32 but it is executable on MSYS-bash. 2010-12-07 02:43:58 +00:00
constant-fold-gep.ll Land the long talked about "type system rewrite" patch. This 2011-07-09 17:41:24 +00:00
dg.exp sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
extract.ll Fix llvm-extract so that it changes the linkage of all GlobalValues to 2010-09-23 17:25:06 +00:00
invalid-commandline-option.ll Test this differently: I saw this test fail 2008-07-28 19:09:01 +00:00
lint.ll Make BasicAliasAnalysis a normal AliasAnalysis implementation which 2010-10-18 18:04:47 +00:00