Sanjay Patel f5a8ebbd97 [SimplifyCFG] eliminate switch cases based on known range of switch condition ...

This was noted in PR24766:
https://llvm.org/bugs/show_bug.cgi?id=24766#c2

We may not know whether the sign bit(s) are zero or one, but we can still
optimize based on knowing that the sign bit is repeated.

Differential Revision: http://reviews.llvm.org/D20275



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270222 91177308-0d34-0410-b5e6-96231b3b80d8

2016-05-20 14:53:09 +00:00

..

AddDiscriminators.cpp

Revert http://reviews.llvm.org/D19926 as it breaks tests.

2016-05-05 20:47:53 +00:00

ASanStackFrameLayout.cpp

Update to use new name alignTo().

2016-01-14 21:06:47 +00:00

BasicBlockUtils.cpp

improve documentation comments; NFC

2016-04-23 16:31:48 +00:00

BreakCriticalEdges.cpp

improve documentation comments; NFC

2016-04-23 16:31:48 +00:00

BuildLibCalls.cpp

[InferAttrs] Mark memset_pattern16 params nocapture.

2016-04-27 19:04:43 +00:00

BypassSlowDivision.cpp

Clarify that the bypassSlowDivision optimization operates on a single BB [v2]

2016-01-04 23:18:58 +00:00

CloneFunction.cpp

Cloning: Clean up the interface to the CloneFunction function.

2016-05-10 20:23:24 +00:00

CloneModule.cpp

Preserve extern_weak linkage in CloneModule.

2016-03-31 20:21:31 +00:00

CMakeLists.txt

Add a pass to name anonymous/nameless function

2016-04-12 21:35:28 +00:00

CmpInstAnalysis.cpp

[C++] Use 'nullptr'. Transforms edition.

2014-04-25 05:29:35 +00:00

CodeExtractor.cpp

[IR] Reformulate LLVM's EH funclet IR

2015-12-12 05:38:55 +00:00

CtorUtils.cpp

TransformUtils: Remove implicit ilist iterator conversions, NFC

2015-10-13 02:39:05 +00:00

DemoteRegToStack.cpp

TransformUtils: Remove implicit ilist iterator conversions, NFC

2015-10-13 02:39:05 +00:00

Evaluator.cpp

Don't IPO over functions that can be de-refined

2016-04-08 00:48:30 +00:00

FlattenCFG.cpp

LPM: Stop threading Pass * through all of the loop utility APIs. NFC

2015-12-15 19:40:57 +00:00

FunctionImportUtils.cpp

ThinLTO: fix assertion and refactor check for hidden use from inline ASM in a helper function

2016-05-06 08:25:33 +00:00

GlobalStatus.cpp

NFC: make AtomicOrdering an enum class

2016-04-06 21:19:33 +00:00

InlineFunction.cpp

All llvm.deoptimize declarations must use the same calling convention

2016-05-12 01:17:38 +00:00

InstructionNamer.cpp

Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)

2015-06-23 09:49:53 +00:00

IntegerDivision.cpp

TransformUtils: Avoid getNodePtrUnchecked() in integer division, NFC

2016-02-21 20:14:29 +00:00

LCSSA.cpp

[LCSSA] Use llvm::any_of instead of std::size_of.

2016-05-17 19:01:02 +00:00

LLVMBuild.txt

[PM/AA] Remove the last relics of the separate IPA library from LLVM,

2015-08-18 17:51:53 +00:00

Local.cpp

Revert "[SimplifyCFG] Extend TryToSimplifyUncondBranchFromEmptyBlock for empty block including lifetime intrinsics"

2016-05-02 19:43:22 +00:00

LoopSimplify.cpp

[PM] Port of the DepndenceAnalysis to the new PM.

2016-05-12 22:19:39 +00:00

LoopUnroll.cpp

Minor formatting fixes in LoopUnroll.cpp.

2016-05-10 00:31:23 +00:00

LoopUnrollRuntime.cpp

The patch fixes PR27392.

2016-04-27 03:04:54 +00:00

LoopUtils.cpp

[LoopVectorize] Handling induction variable with non-constant step.

2016-05-10 07:33:35 +00:00

LoopVersioning.cpp

[LoopVersioning] Relax an assert for LCSSA PHIs

2016-03-22 18:38:15 +00:00

LowerInvoke.cpp

[NFC] Header cleanup

2016-04-18 09:17:29 +00:00

LowerSwitch.cpp

TransformUtils: Remove implicit ilist iterator conversions, NFC

2015-10-13 02:39:05 +00:00

Mem2Reg.cpp

Re-commit optimization bisect support (r267022) without new pass manager support.

2016-04-22 22:06:11 +00:00

MemorySSA.cpp

[MemorySSA] Fix bugs in walker; refactor unittests a bit.

2016-04-29 18:42:55 +00:00

MetaRenamer.cpp

Whoops, remove trailing whitespace.

2015-08-27 05:37:12 +00:00

ModuleUtils.cpp

[ThinLTO] Prevent importing of "llvm.used" values

2016-04-20 14:39:45 +00:00

NameAnonFunctions.cpp

Fix mismatch on returned type between header and implementation for createNameAnonFunctionPass()

2016-04-12 23:25:11 +00:00

PromoteMemoryToRegister.cpp

Correct IDF calculator for ReverseIDF

2016-04-19 06:13:28 +00:00

SanitizerStats.cpp

Fix Clang-tidy modernize-use-nullptr and modernize-use-override warnings; other minor fixes.

2016-01-26 18:48:36 +00:00

SimplifyCFG.cpp

[SimplifyCFG] eliminate switch cases based on known range of switch condition

2016-05-20 14:53:09 +00:00

SimplifyIndVar.cpp

[NFC] Header cleanup

2016-04-18 09:17:29 +00:00

SimplifyInstructions.cpp

Add opt-bisect support to additional passes that can be skipped

2016-05-03 22:32:30 +00:00

SimplifyLibCalls.cpp

Optimize a printf with a double procent to putchar.

2016-05-09 14:36:16 +00:00

SplitModule.cpp

[GlobalDCE, Misc] Don't remove functions referenced by ifuncs

2016-05-04 00:20:48 +00:00

SSAUpdater.cpp

Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)

2015-06-23 09:49:53 +00:00

SymbolRewriter.cpp

Make some headers self-contained, remove unused includes that violate layering.

2016-01-27 16:05:37 +00:00

UnifyFunctionExitNodes.cpp

TransformUtils: Remove implicit ilist iterator conversions, NFC

2015-10-13 02:39:05 +00:00

Utils.cpp

Add a pass to name anonymous/nameless function

2016-04-12 21:35:28 +00:00

ValueMapper.cpp

Minor code cleanups. NFC.

2016-05-08 23:22:58 +00:00