Chandler Carruth 681add7a63 Switch the constant expression speculation cost evaluation away from ... a cost fuction that seems both a bit ad-hoc and also poorly suited to evaluating constant expressions. Notably, it is missing any support for trivial expressions such as 'inttoptr'. I could fix this routine, but it isn't clear to me all of the constraints its other users are operating under. The core protection that seems relevant here is avoiding the formation of a select instruction wich a further chain of select operations in a constant expression operand. Just explicitly encode that constraint. Also, update the comments and organization here to make it clear where this needs to go -- this should be driven off of real cost measurements which take into account the number of constants expressions and the depth of the constant expression tree. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173340 91177308-0d34-0410-b5e6-96231b3b80d8		2013-01-24 11:53:01 +00:00
..
BasicBlockUtils.cpp	Remove trailing spaces.	2013-01-14 23:16:36 +00:00
BreakCriticalEdges.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
BuildLibCalls.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
BypassSlowDivision.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
CloneFunction.cpp	Remove the last of uses that use the Attribute object as a collection of attributes.	2013-01-23 06:14:59 +00:00
CloneModule.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
CMakeLists.txt	Sink the AddressingModeMatcher helper class into an anonymous namespace	2013-01-05 02:09:22 +00:00
CmpInstAnalysis.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
CodeExtractor.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
DemoteRegToStack.cpp	Make sure we don't emit instructions before a landingpad instruction.	2013-01-08 10:51:32 +00:00
InlineFunction.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstructionNamer.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
IntegerDivision.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LCSSA.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LLVMBuild.txt
Local.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LoopSimplify.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LoopUnroll.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LoopUnrollRuntime.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LowerExpectIntrinsic.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LowerInvoke.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LowerSwitch.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
Makefile
Mem2Reg.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
MetaRenamer.cpp	Make sure metarenamer won't rename special stuff (intrinsics and explicitly renamed stuff).	2013-01-23 15:03:08 +00:00
ModuleUtils.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
PromoteMemoryToRegister.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
SimplifyCFG.cpp	Switch the constant expression speculation cost evaluation away from	2013-01-24 11:53:01 +00:00
SimplifyIndVar.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
SimplifyInstructions.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
SimplifyLibCalls.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
SSAUpdater.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
UnifyFunctionExitNodes.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
Utils.cpp
ValueMapper.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00