Dan Gohman f5a309e989 Use a sign-extend instead of a zero-extend when promoting a ... trip count value when the original loop iteration condition is signed and the canonical induction variable won't undergo signed overflow. This isn't required for correctness; it just preserves more information about original loop iteration values. Add a getTruncateOrSignExtend method to ScalarEvolution, following getTruncateOrZeroExtend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64918 91177308-0d34-0410-b5e6-96231b3b80d8		2009-02-18 17:22:41 +00:00
..
IPA	Reapply r64300:	2009-02-13 07:15:53 +00:00
AliasAnalysis.cpp	Generalize some alias analysis logic from atomic	2009-02-14 10:56:35 +00:00
AliasAnalysisCounter.cpp
AliasAnalysisEvaluator.cpp
AliasDebugger.cpp	Refactor my previous change to maintain the distinction between AliasAnalysis and BasicAliasAnalysis. This involves some wider changes because it	2009-02-05 23:36:27 +00:00
AliasSetTracker.cpp
Analysis.cpp
BasicAliasAnalysis.cpp	Generalize some alias analysis logic from atomic	2009-02-14 10:56:35 +00:00
CaptureTracking.cpp
CFGPrinter.cpp
CMakeLists.txt	Fix PR3415 (infinite loop in EscapeAnalysis) by	2009-01-28 11:33:59 +00:00
ConstantFolding.cpp
DbgInfoPrinter.cpp
DebugInfo.cpp	The debugger sometimes lookup dynamically in the runtime to find ivar info of any Objective-C classes. It would be very helpful to debugger if the compiler encodes runtime version number in DWARF.	2009-02-17 22:43:44 +00:00
InstCount.cpp
Interval.cpp
IntervalPartition.cpp
LibCallAliasAnalysis.cpp
LibCallSemantics.cpp
LoopInfo.cpp
LoopPass.cpp	Add a method to ScalarEvolution for telling it when a loop has been	2009-02-17 20:49:49 +00:00
LoopVR.cpp
Makefile
MemoryDependenceAnalysis.cpp
PostDominators.cpp
ProfileInfo.cpp
ProfileInfoLoader.cpp
ProfileInfoLoaderPass.cpp
ScalarEvolution.cpp	Use a sign-extend instead of a zero-extend when promoting a	2009-02-18 17:22:41 +00:00
ScalarEvolutionExpander.cpp
SparsePropagation.cpp
Trace.cpp
ValueTracking.cpp