Mark Heffernan ed05e3703e This patch de-pessimizes the calculation of loop trip counts in ... ScalarEvolution in the presence of multiple exits. Previously all loops exits had to have identical counts for a loop trip count to be considered computable. This pessimization was implemented by calling getBackedgeTakenCount(L) rather than getExitCount(L, ExitingBlock) inside of ScalarEvolution::getSmallConstantTripCount() (see the FIXME in the comments of that function). The pessimization was added to fix a corner case involving undefined behavior (pr/16130). This patch more precisely handles the undefined behavior case allowing the pessimization to be removed. ControlsExit replaces IsSubExpr to more precisely track the case where undefined behavior is expected to occur. Because undefined behavior is tracked more precisely we can remove MustExit from ExitLimit. MustExit was used to track the case where the limit was computed potentially assuming undefined behavior even if undefined behavior didn't necessarily occur. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219517 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-10 17:39:11 +00:00
..
ADT	[ADT] Add an (ADL-friendly) abs free function for APFloat that returns	2014-10-10 08:27:22 +00:00
Analysis	This patch de-pessimizes the calculation of loop trip counts in	2014-10-10 17:39:11 +00:00
AsmParser	Pass a MemoryBufferRef when we can avoid taking ownership.	2014-08-26 21:49:01 +00:00
Bitcode	Spell out the template args for compilers having issues with the injected class	2014-09-15 16:13:33 +00:00
CodeGen	Add couple of missing 'override' keyword. NFC.	2014-10-10 17:34:30 +00:00
Config	Revert r219354. It seems to break some buildbots.	2014-10-08 23:07:59 +00:00
DebugInfo	[dwarfdump] Resolve also variable specifications/abstract_origins.	2014-10-10 15:51:02 +00:00
ExecutionEngine	[MCJIT] Turn the getSymbolAddress free function created in r218626 into a static	2014-10-01 04:11:13 +00:00
IR	Add isInfinity to ConstantFP	2014-10-10 02:15:04 +00:00
IRReader	Pass a MemoryBufferRef when we can avoid taking ownership.	2014-08-26 21:49:01 +00:00
LineEditor	[C++11] Replace OwningPtr with std::unique_ptr in places where it doesn't break the API.	2014-04-21 09:34:48 +00:00
Linker	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
LTO	unique_ptrify LTOCodeGenerator::NativeObjectFile	2014-09-02 18:21:06 +00:00
MC	don't repeat function name in comments	2014-10-07 17:28:04 +00:00
Object	Object, COFF: Relax aux symbols for section definitions	2014-10-10 06:58:11 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	InstrProf: Avoid linear search in a hot loop	2014-10-02 17:14:18 +00:00
Support	Add ApplePropertyString dump helper to Dwarf.{h|cpp}.	2014-10-09 20:43:04 +00:00
TableGen	[TableGen] Fully resolve class-instance values before defs in multiclasses	2014-09-16 17:14:13 +00:00
Target	Remove unused field from Operand	2014-10-09 19:15:18 +00:00
Transforms	[SimplifyCFG] threshold for folding branches with common destination	2014-09-30 22:23:38 +00:00
CMakeLists.txt	Remove llvm_headers_do_not_build for the benefit of XCode and Visual Studio users.	2014-08-14 00:51:47 +00:00
InitializePasses.h	Add a new pass FunctionTargetTransformInfo. This pass serves as a	2014-09-18 00:34:14 +00:00
LinkAllIR.h	[cleanup] Move the Dominators.h and Verifier.h headers into the IR	2014-01-13 09:26:24 +00:00
LinkAllPasses.h	Make AAMDNodes ctor and operator bool (!!!) explicit, mop up bugs and weirdness exposed by it.	2014-10-04 22:44:29 +00:00
module.modulemap	Nuke MCAnalysis.	2014-09-02 22:32:20 +00:00
module.modulemap.build	[modules] Add module maps for LLVM. These are not quite ready for prime-time	2014-05-21 02:46:14 +00:00
Pass.h	Revert "[PM] Add pass run listeners to the pass manager."	2014-05-15 17:49:20 +00:00
PassAnalysisSupport.h	[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.	2014-04-14 00:51:57 +00:00
PassInfo.h	Remove pimpl class from PassRegistry.	2014-06-12 16:06:51 +00:00
PassManager.h	Move the old pass manager infrastructure into a legacy namespace and	2013-11-09 12:26:54 +00:00
PassRegistry.h	[PM] Remove an unused and rather expensive mapping from an analysis	2014-10-06 00:30:59 +00:00
PassSupport.h	Move GlobalMerge from Transform to CodeGen.	2014-06-13 22:57:59 +00:00