Chandler Carruth f348c9782c Introduce an AnalysisManager which is like a pass manager but with a lot ... more smarts in it. This is where most of the interesting logic that used to live in the implicit-scheduling-hackery of the old pass manager will live. Like the previous commits, note that this is a very early prototype! I expect substantial changes before this is ready to use. The core of the design is the following: - We have an AnalysisManager which can be used across a series of passes over a module. - The code setting up a pass pipeline registers the analyses available with the manager. - Individual transform passes can check than an analysis manager provides the analyses they require in order to fail-fast. - There is *no* implicit registration or scheduling. - Analysis passes are different from other passes: they produce an analysis result that is cached and made available via the analysis manager. - Cached results are invalidated automatically by the pass managers. - When a transform pass requests an analysis result, either the analysis is run to produce the result or a cached result is provided. There are a few aspects of this design that I *know* will change in subsequent commits: - Currently there is no "preservation" system, that needs to be added. - All of the analysis management should move up to the analysis library. - The analysis management needs to support at least SCC passes. Maybe loop passes. Living in the analysis library will facilitate this. - Need support for analyses which are *both* module and function passes. - Need support for pro-actively running module analyses to have cached results within a function pass manager. - Need a clear design for "immutable" passes. - Need support for requesting cached results when available and not re-running the pass even if that would be necessary. - Need more thorough testing of all of this infrastructure. There are other aspects that I view as open questions I'm hoping to resolve as I iterate a bit on the infrastructure, and especially as I start writing actual passes against this. - Should we have separate management layers for function, module, and SCC analyses? I think "yes", but I'm not yet ready to switch the code. Adding SCC support will likely resolve this definitively. - How should the 'require' functionality work? Should *that* be the only way to request results to ensure that passes always require things? - How should preservation work? - Probably some other things I'm forgetting. =] Look forward to more patches in shorter order now that this is in place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194538 91177308-0d34-0410-b5e6-96231b3b80d8		2013-11-13 01:12:08 +00:00
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Analysis	delinearization of arrays	2013-11-12 22:47:20 +00:00
AsmParser	[Stackmap] Add AnyReg calling convention support for patchpoint intrinsic.	2013-11-08 23:28:16 +00:00
Bitcode	Extract a bc attr parsing helper that returns Attribute::None on error	2013-11-12 01:31:00 +00:00
CodeGen	Replacing HUGE_VALF with llvm::huge_valf in order to work around a warning triggered in MSVC 12.	2013-11-13 00:15:44 +00:00
DebugInfo	DebugInfo: Make pubnames header printing similar to unit header printing	2013-11-01 17:53:30 +00:00
ExecutionEngine	Fixing a problem with iterator validity in RuntimeDyldImpl::resolveExternalSymbols	2013-11-11 19:55:10 +00:00
IR	Introduce an AnalysisManager which is like a pass manager but with a lot	2013-11-13 01:12:08 +00:00
IRReader	[llvm-c] Expose IRReader interface	2013-11-06 09:21:15 +00:00
Linker	Revert "Move copying of global initializers below the cloning of functions."	2013-11-09 00:43:18 +00:00
LTO	Protect user-supplied runtime library functions in LTO	2013-11-12 21:44:01 +00:00
MC	Remove always true flag.	2013-11-12 23:27:08 +00:00
Object	Support for microMIPS branch instructions.	2013-11-04 14:53:22 +00:00
Option	Use startswith_lower() where possible.	2013-11-04 19:22:50 +00:00
Support	Add newline at EOF in DynamicLibrary.cpp	2013-11-06 11:12:46 +00:00
TableGen	Fix most memory leaks in tablegen.	2013-10-31 04:07:41 +00:00
Target	Remove always true flag.	2013-11-12 23:27:08 +00:00
Transforms	Update the docs to match the function name.	2013-11-13 01:12:01 +00:00
CMakeLists.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
LLVMBuild.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
Makefile	Reformat Makefile. No other changes.	2013-10-30 04:03:03 +00:00