Chris Lattner be577659d3 Step #1 to giving Callgraph some sane invariants. The problems with callgraph ... stem from the fact that we have two types of passes that need to update it: 1. callgraphscc and module passes that are explicitly aware of it 2. Functionpasses (and loop passes etc) that are interlaced with CGSCC passes by the CGSCC Passmgr. In the case of #1, we can reasonably expect the passes to update the call graph just like any analysis. However, functionpasses are not and generally should not be CG aware. This has caused us no end of problems, so this takes a new approach. Logically, the CGSCC Pass manager can rescan every function after it runs a function pass over it to see if the functionpass made any updates to the IR that affect the callgraph. This allows it to catch new calls introduced by the functionpass. In practice, doing this would be slow. This implementation keeps track of whether or not the current scc is dirtied by a function pass, and, if so, delays updating the callgraph until it is actually needed again. This was we avoid extraneous rescans, but we still have good invariants when the callgraph is needed. Step #2 of the "give Callgraph some sane invariants" is to change CallGraphNode to use a CallBackVH for the callsite entry of the CallGraphNode. This way we can immediately remove entries from the callgraph when a FunctionPass is active instead of having dangling pointers. The current pass tries to tolerate these dangling pointers, but it is just an evil hack. This is related to PR3601/4835/4029. This also reverts r80541, a hack working around the sad lack of invariants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80566 91177308-0d34-0410-b5e6-96231b3b80d8		2009-08-31 07:23:46 +00:00
..
ADT	make DenseMap::clear() early exit if there is nothing to do.	2009-08-30 05:55:04 +00:00
Analysis	Step #1 to giving Callgraph some sane invariants. The problems with callgraph	2009-08-31 07:23:46 +00:00
Assembly	eliminate the std::ostream form of WriteAsOperand and update clients.	2009-08-23 05:17:37 +00:00
Bitcode	Clean up the minor mess I caused with removing iterator.h. I shall take care of 80-col violations and the FIXME later. (Thanks goodness that I live in another continent, so the monkeypox did not strike me :-)	2009-08-27 06:41:46 +00:00
CodeGen	Nuke moribund "std::string" version of EOL(..., Encoding).	2009-08-30 00:28:57 +00:00
CompilerDriver	eliminate all 80-col violations that I have introduced in my recent checkins (and some others more)	2009-08-27 23:44:33 +00:00
Config	re-apply r80197, now that iterator.h is not mentioned any more	2009-08-27 17:07:35 +00:00
Debugger	Prune #includes from llvm/Linker.h and llvm/System/Path.h,	2009-08-23 22:45:37 +00:00
ExecutionEngine	This void is implicit in C++.	2009-08-12 22:10:57 +00:00
MC	Tweak comment.	2009-08-30 21:14:05 +00:00
Support	hopefully unbreak the build by making this-> explicit for dependent	2009-08-30 17:44:10 +00:00
System	Prune #includes from llvm/Linker.h and llvm/System/Path.h,	2009-08-23 22:45:37 +00:00
Target	- Add target lowering methods to get the preferred format for the FDE and LSDA	2009-08-29 12:20:54 +00:00
Transforms	Fix some nasty callgraph dangling pointer problems in	2009-08-31 00:19:58 +00:00
AbstractTypeUser.h	Another attempt at fixing PR2975.	2009-04-07 17:23:02 +00:00
Argument.h	Initial update to VMCore to use Twines for string arguments.	2009-07-25 04:41:11 +00:00
Attributes.h	Add an 'inline hint' attribute to represent source	2009-08-26 01:08:21 +00:00
AutoUpgrade.h	Reapply 79977.	2009-08-28 23:24:31 +00:00
BasicBlock.h	Remove all the LLVM_COMPACTIFY_SENTINELS-related macro magic as discussed with Chris on IRC. Anybody wanting to debug sentinel dereferencing problems must revert this patch and perform the indicated modifications.	2009-08-26 19:16:32 +00:00
CallGraphSCCPass.h	Fix some nasty callgraph dangling pointer problems in	2009-08-31 00:19:58 +00:00
CallingConv.h	Address review comments: add 3 ARM calling conventions.	2009-06-16 18:50:49 +00:00
CMakeLists.txt	CMake: Have generated Xcode projects also contain the LLVM header files.	2009-04-01 15:40:21 +00:00
Constant.h	Make LLVMContext and LLVMContextImpl classes instead of structs.	2009-08-11 17:45:13 +00:00
Constants.h	Add helper functions to ConstantInt and ConstantFP to accept strings.	2009-08-16 23:36:33 +00:00
DerivedTypes.h	Actually privatize a IntegerTypes, and fix a few bugs exposed by this.	2009-08-13 23:27:32 +00:00
Function.h	Remove all the LLVM_COMPACTIFY_SENTINELS-related macro magic as discussed with Chris on IRC. Anybody wanting to debug sentinel dereferencing problems must revert this patch and perform the indicated modifications.	2009-08-26 19:16:32 +00:00
GlobalAlias.h	Finish migrating VMCore to StringRef/Twine based APIs.	2009-07-25 06:02:13 +00:00
GlobalValue.h	Finish migrating VMCore to StringRef/Twine based APIs.	2009-07-25 06:02:13 +00:00
GlobalVariable.h	Make LLVMContext and LLVMContextImpl classes instead of structs.	2009-08-11 17:45:13 +00:00
InlineAsm.h	Finish migrating VMCore to StringRef/Twine based APIs.	2009-07-25 06:02:13 +00:00
InstrTypes.h	Eliminate the unused Context argument on one of the ICmpInst and FCmpInst	2009-08-25 23:17:54 +00:00
Instruction.def	Remove the vicmp and vfcmp instructions. Because we never had a release with	2009-07-08 03:04:38 +00:00
Instruction.h	Rename Instruction::isIdenticalTo to Instruction::isIdenticalToWhenDefined,	2009-08-25 22:11:20 +00:00
Instructions.h	add getPointerAddressSpace() to GEP instruction, use the method	2009-08-30 20:06:40 +00:00
IntrinsicInst.h	Reapply 79977.	2009-08-28 23:24:31 +00:00
Intrinsics.h	Make LLVMContext and LLVMContextImpl classes instead of structs.	2009-08-11 17:45:13 +00:00
Intrinsics.td	Reapply 79977.	2009-08-28 23:24:31 +00:00
IntrinsicsAlpha.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsARM.td	Add new intrinsics for Neon vldN_lane and vstN_lane operations.	2009-08-22 02:28:46 +00:00
IntrinsicsBlackfin.td	Remove unneeded intrinsics from Blackfin backend.	2009-08-02 21:49:05 +00:00
IntrinsicsCellSPU.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsPowerPC.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsX86.td	Add sse4.2 string/text processing intrinsics. We'll select these later.	2009-08-14 20:27:57 +00:00
IntrinsicsXCore.td	Add XCore intrinsics for getid (returns thread id) and bitrev (reverses	2008-11-14 10:12:16 +00:00
LinkAllPasses.h	Create a ScalarEvolution-based AliasAnalysis implementation.	2009-08-26 14:53:06 +00:00
LinkAllVMCore.h	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
Linker.h	Prune #includes from llvm/Linker.h and llvm/System/Path.h,	2009-08-23 22:45:37 +00:00
LLVMContext.h	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
Metadata.h	Reapply 79977.	2009-08-28 23:24:31 +00:00
Module.h	remove the std::ostream version of module and type printing.	2009-08-23 04:52:46 +00:00
ModuleProvider.h
OperandTraits.h	Remove some dead functions, patch by Ryan Flynn!	2009-07-14 18:58:35 +00:00
Operator.h	Rename hasNoUnsignedOverflow and hasNoSignedOverflow to hasNoUnsignedWrap	2009-08-20 17:11:38 +00:00
Pass.h	Change Pass::print to take a raw ostream instead of std::ostream,	2009-08-23 06:03:38 +00:00
PassAnalysisSupport.h	Simplify assertion message to avoid confusion.	2009-06-02 17:26:29 +00:00
PassManager.h
PassManagers.h	Fix a bunch of namespace pollution.	2009-08-07 01:32:21 +00:00
PassSupport.h	Remove some unused fields.	2009-08-29 23:34:14 +00:00
SymbolTableListTraits.h	simplify the way how traits get hold of the symbol table	2009-03-07 12:33:24 +00:00
Type.h	Clean up the minor mess I caused with removing iterator.h. I shall take care of 80-col violations and the FIXME later. (Thanks goodness that I live in another continent, so the monkeypox did not strike me :-)	2009-08-27 06:41:46 +00:00
TypeSymbolTable.h	Don't search the entire type table just to delete a type by name.	2009-08-06 06:04:35 +00:00
Use.h	eliminate all 80-col violations that I have introduced in my recent checkins (and some others more)	2009-08-27 23:44:33 +00:00
User.h	Remove some dead functions, patch by Ryan Flynn!	2009-07-14 18:58:35 +00:00
Value.h	Rename Instruction::isIdenticalTo to Instruction::isIdenticalToWhenDefined,	2009-08-25 22:11:20 +00:00
ValueSymbolTable.h	revert r78048, it isn't worth using assertingvh here.	2009-08-04 23:07:12 +00:00