Hans Wennborg 4744ac1733 Switch-to-lookup tables: set threshold to 3 cases ...

There has been an old FIXME to find the right cut-off for when it's worth
analyzing and potentially transforming a switch to a lookup table.

The switches always have two or more cases. I could not measure any speed-up
by transforming a switch with two cases. A switch with three cases gets a nice
speed-up, and I couldn't measure any compile-time regression, so I think this
is the right threshold.

In a Clang self-host, this causes 480 new switches to be transformed,
and reduces the final binary size with 8 KB.

llvm-svn: 199294

2014-01-15 05:00:27 +00:00

..

ASanStackFrameLayout.cpp

[asan] fix ndebug build with strict warnings (-Wunused-variable)

2013-12-06 09:26:09 +00:00

BasicBlockUtils.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

BreakCriticalEdges.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

BuildLibCalls.cpp

Enable double to float shrinking optimizations for binary functions like 'fmin/fmax'. Fix radar:15283121

2013-12-16 22:42:40 +00:00

BypassSlowDivision.cpp

Bypass Slow Divides

2013-03-04 18:13:57 +00:00

CloneFunction.cpp

Extend RemapInstruction and friends to take an optional new parameter, a ValueMaterializer.

2013-05-28 15:17:05 +00:00

CloneModule.cpp

…

CMakeLists.txt

[asan] rewrite asan's stack frame layout

2013-12-06 09:00:17 +00:00

CmpInstAnalysis.cpp

…

CodeExtractor.cpp

[cleanup] Move the Dominators.h and Verifier.h headers into the IR

2014-01-13 09:26:24 +00:00

DemoteRegToStack.cpp

Re-sort all of the includes with ./utils/sort_includes.py so that

2014-01-07 11:48:04 +00:00

FlattenCFG.cpp

Convert manual insert point restores to the new RAII object.

2013-09-30 15:40:17 +00:00

GlobalStatus.cpp

Handle calls and invokes in GlobalStatus.

2013-10-25 21:29:52 +00:00

InlineFunction.cpp

Fix inlining to not lose the "cleanup" clause from landingpads

2013-12-08 00:51:21 +00:00

InstructionNamer.cpp

…

IntegerDivision.cpp

Add support for software expansion of 64-bit integer division instructions.

2013-11-19 06:54:19 +00:00

LCSSA.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

LLVMBuild.txt

…

Local.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

LoopSimplify.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

LoopUnroll.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

LoopUnrollRuntime.cpp

…

LowerExpectIntrinsic.cpp

Fix spelling intruction -> instruction.

2013-09-28 11:46:15 +00:00

LowerInvoke.cpp

Remove several unused variables.

2013-10-01 13:32:03 +00:00

LowerSwitch.cpp

Revert patches to add case-range support for PR1255.

2013-09-09 19:14:35 +00:00

Makefile

…

Mem2Reg.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

MetaRenamer.cpp

Add 'const' qualifier to some arrays.

2013-07-15 08:02:13 +00:00

ModuleUtils.cpp

Respect llvm.used in Internalize.

2013-07-25 03:23:25 +00:00

PromoteMemoryToRegister.cpp

[cleanup] Move the Dominators.h and Verifier.h headers into the IR

2014-01-13 09:26:24 +00:00

SimplifyCFG.cpp

Switch-to-lookup tables: set threshold to 3 cases

2014-01-15 05:00:27 +00:00

SimplifyIndVar.cpp

[cleanup] Move the Dominators.h and Verifier.h headers into the IR

2014-01-13 09:26:24 +00:00

SimplifyInstructions.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

SimplifyLibCalls.cpp

Enable double to float shrinking optimizations for binary functions like 'fmin/fmax'. Fix radar:15283121

2013-12-16 22:42:40 +00:00

SpecialCaseList.cpp

Re-sort all of the includes with ./utils/sort_includes.py so that

2014-01-07 11:48:04 +00:00

SSAUpdater.cpp

Basic blocks typically have few predecessors. Use a SmallDenseMap to

2013-10-14 16:05:55 +00:00

UnifyFunctionExitNodes.cpp

…

Utils.cpp

Re-sort all of the includes with ./utils/sort_includes.py so that

2014-01-07 11:48:04 +00:00

ValueMapper.cpp

Extend RemapInstruction and friends to take an optional new parameter, a ValueMaterializer.

2013-05-28 15:17:05 +00:00