7 Commits

Author	SHA1	Message	Date
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
Chris Lattner	59345c8b65	remove asmparser support for the old getresult instruction, which has been subsumed by extractvalue. ... llvm-svn: 133247	2011-06-17 06:57:15 +00:00
Chris Lattner	33de427cd6	remove parser support for the obsolete "multiple return values" syntax, which ... was replaced with return of a "first class aggregate". llvm-svn: 133245	2011-06-17 06:49:41 +00:00
Dan Gohman	40503396da	Eliminate more uses of llvm-as and llvm-dis. ... llvm-svn: 81290	2009-09-08 23:54:48 +00:00
Chris Lattner	5abbe6cef5	Add support for calls that return two FP values in ... ST(0)/ST(1). llvm-svn: 48634	2008-03-21 06:38:26 +00:00
Chris Lattner	7e59a30e9f	disable a bogus assertion. ... llvm-svn: 48633	2008-03-21 06:01:05 +00:00
Chris Lattner	b6f04a3e0a	Enable support for returning two long-double values in ST(0)/ST(1). ... This allows us to compile fp-stack-2results.ll into: _test: fldz fld1 ret which returns 1 in ST(0) and 0 in ST(1). This is needed for x86-64 _Complex long double. llvm-svn: 48632	2008-03-21 05:57:20 +00:00