Dan Gohman 81db61a2e6 Factor the code for collecting IV users out of LSR into an IVUsers class, ... and generalize it so that it can be used by IndVarSimplify. Implement the base IndVarSimplify transformation code using IVUsers. This removes TestOrigIVForWrap and associated code, as ScalarEvolution now has enough builtin overflow detection and folding logic to handle all the same cases, and more. Run "opt -iv-users -analyze -disable-output" on your favorite loop for an example of what IVUsers does. This lets IndVarSimplify eliminate IV casts and compute trip counts in more cases. Also, this happens to finally fix the remaining testcases in PR1301. Now that IndVarSimplify is being more aggressive, it occasionally runs into the problem where ScalarEvolutionExpander's code for avoiding duplicate expansions makes it difficult to ensure that all expanded instructions dominate all the instructions that will use them. As a temporary measure, IndVarSimplify now uses a FixUsesBeforeDefs function to fix up instructions inserted by SCEVExpander. Fortunately, this code is contained, and can be easily removed once a more comprehensive solution is available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71535 91177308-0d34-0410-b5e6-96231b3b80d8		2009-05-12 02:17:14 +00:00
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ADT	Add terminal width detection to llvm::sys::Process. This is needed to	2009-05-11 18:05:52 +00:00
Analysis	Factor the code for collecting IV users out of LSR into an IVUsers class,	2009-05-12 02:17:14 +00:00
Assembly	add a #include to improve portability to windows, as requested by	2009-03-09 05:10:08 +00:00
Bitcode	give bitstreamreader an API to ignore names for blocks/records,	2009-04-27 20:04:08 +00:00
CodeGen	Factor out cycle-finder code and make it generic.	2009-05-08 18:51:58 +00:00
CompilerDriver	-write-graph now can be used with -o.	2009-03-27 12:57:14 +00:00
Config	Add terminal width detection to llvm::sys::Process. This is needed to	2009-05-11 18:05:52 +00:00
Debugger	Tidy up #includes, deleting a bunch of unnecessary #includes.	2009-01-05 17:59:02 +00:00
ExecutionEngine	Instead of passing in an unsigned value for the optimization level, use an enum,	2009-04-29 23:29:43 +00:00
Support	Add DW_AT_APPLE_isa and DW_AT_APPLE_block. Radar 6867696	2009-05-11 21:58:01 +00:00
System	Add terminal width detection to llvm::sys::Process. This is needed to	2009-05-11 18:05:52 +00:00
Target	Don't #include DerivedTypes.h from TargetData.h.	2009-05-11 19:38:09 +00:00
Transforms	Re-apply 70645, converting ScalarEvolution to use	2009-05-04 22:30:44 +00:00
AbstractTypeUser.h	Another attempt at fixing PR2975.	2009-04-07 17:23:02 +00:00
Argument.h	Don't analyze arguments already marked 'nocapture'.	2008-12-31 18:08:59 +00:00
Attributes.h	Add a new Attribute::getAlignmentFromAttrs method.	2008-12-31 08:41:38 +00:00
AutoUpgrade.h	Tidy up #includes, deleting a bunch of unnecessary #includes.	2009-01-05 17:59:02 +00:00
BasicBlock.h	Revert r67844. This fixes the llvm-gcc-4.2 build on Darwin.	2009-03-27 18:37:13 +00:00
CallGraphSCCPass.h	Tidy up several unbeseeming casts from pointer to intptr_t.	2008-09-04 17:05:41 +00:00
CallingConv.h	Add "inreg" field to CallSDNode (doesn't increase	2008-09-26 19:31:26 +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	Clearify local/global relocations wording	2009-03-30 17:38:00 +00:00
Constants.h	Make MDNode use CallbackVH. Also change MDNode to store Value* instead of	2009-05-10 20:57:05 +00:00
DerivedTypes.h	80-column violation.	2009-02-14 08:41:25 +00:00
Function.h	Revert r67844. This fixes the llvm-gcc-4.2 build on Darwin.	2009-03-27 18:37:13 +00:00
GlobalAlias.h	Tidy up #includes, deleting a bunch of unnecessary #includes.	2009-01-05 17:59:02 +00:00
GlobalValue.h	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
GlobalVariable.h	Factorize out a concept - no functionality change.	2009-03-21 21:27:31 +00:00
InlineAsm.h	Model inline asm constraint which ties an input to an output register as machine operand TIED_TO constraint. This eliminated the need to pre-allocate registers for these. This also allows register allocator can eliminate the unneeded copies.	2009-03-23 08:01:15 +00:00
InstrTypes.h	80-column violations.	2009-02-09 17:11:05 +00:00
Instruction.def	Cosmetic.	2008-10-06 20:33:02 +00:00
Instruction.h	Allow readonly functions to unwind exceptions. Teach	2009-05-06 06:49:50 +00:00
Instructions.h	Make getOperandNumForIncomingValue and getOperandNumForIncomingBlock	2009-03-23 15:48:29 +00:00
IntrinsicInst.h	change the MemIntrinsic get/setAlignment method to take an unsigned	2009-03-08 03:59:00 +00:00
Intrinsics.h	Added support to have TableGen provide information if an intrinsic (core	2009-02-24 23:17:49 +00:00
Intrinsics.td	Add a comment to describe LLVMMatchType.	2009-04-16 21:46:42 +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	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +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	ADDS{D|S}rr_Int and MULS{D|S}rr_Int are not commutable. The users of these intrinsics expect the high bits will not be modified.	2009-02-26 03:12:02 +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	Add a liveness analysis pass for LLVM IR values. This computes	2009-03-19 17:29:04 +00:00
LinkAllVMCore.h	opt was not exporting the Mangler symbols	2008-11-05 22:42:50 +00:00
Linker.h	* Alphabetized system headers per the style guide	2009-01-02 20:26:30 +00:00
MDNode.h	Needed #includes. Thanks Fritz van Bommel!	2009-05-10 23:27:41 +00:00
Module.h	"ghostify" the ilist<Function> sentinel	2009-03-27 22:28:33 +00:00
ModuleProvider.h
OperandTraits.h	Give Op<N>() AppleScript-like semantics, i.e. for negative N it indexes relative to op_end.	2009-03-10 23:02:13 +00:00
Pass.h	Remove dead code.	2009-04-01 21:27:08 +00:00
PassAnalysisSupport.h	Clean up pass manager cache after each run.	2009-04-01 22:34:41 +00:00
PassManager.h
PassManagers.h	Clean up pass manager cache after each run.	2009-04-01 22:34:41 +00:00
PassSupport.h	remove a deprecated interface that was pretty useless	2009-03-02 12:42:07 +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	Add a new Type::getPointerTo method, which is shorthand for	2009-04-10 06:42:02 +00:00
TypeSymbolTable.h	Fixed spelling.	2009-04-01 16:13:29 +00:00
Use.h	Add a comment to refer to the section of the programmer's manual that explains what the pointer tagging in Use is for.	2009-04-30 23:28:50 +00:00
User.h	Fix the Win32 VS2008 build:	2009-03-19 23:26:52 +00:00
Value.h	Add support for embedded metadata to LLVM. This introduces two new types of	2009-04-04 07:22:01 +00:00
ValueSymbolTable.h	implement some fixme's by making "autorenaming" in the value symbol table not	2008-06-27 21:26:26 +00:00