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llvm-project/llvm/lib/Transforms/Utils
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James Molloy 2b1e101e99 Don't create unnecessary PHIs 
In conditional store merging, we were creating PHIs when we didn't
need to. If the value to be predicated isn't defined in the block
we're predicating, then it doesn't need a PHI at all (because we only
deal with triangles and diamonds, any value not in the predicated BB
must dominate the predicated BB).

This fixes a large code size increase in some benchmarks in a popular embedded benchmark suite.

llvm-svn: 255489
 		2015-12-14 10:57:01 +00:00
..
ASanStackFrameLayout.cpp [Utils] Put includes in correct order. NFC. 2015-11-24 18:57:06 +00:00
AddDiscriminators.cpp Fix the debug build breakage that getDiscriminator is called by mistake. 2015-11-19 20:29:27 +00:00
BasicBlockUtils.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
BreakCriticalEdges.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
BuildLibCalls.cpp [Utils] Put includes in correct order. NFC. 2015-11-24 18:57:06 +00:00
BypassSlowDivision.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
CMakeLists.txt TransformUtils: Introduce module splitter. 2015-08-21 02:48:20 +00:00
CloneFunction.cpp Delete trailing whitespace; NFC 2015-12-09 20:33:45 +00:00
CloneModule.cpp Return a std::unique_ptr from CloneModule. NFC. 2015-12-08 23:57:17 +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
FlattenCFG.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
GlobalStatus.cpp GlobalOpt does not treat externally_initialized globals correctly 2015-10-12 13:20:52 +00:00
InlineFunction.cpp [IR] Reformulate LLVM's EH funclet IR 2015-12-12 05:38:55 +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: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
LCSSA.cpp [IR] Reformulate LLVM's EH funclet IR 2015-12-12 05:38:55 +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 [IR] Reformulate LLVM's EH funclet IR 2015-12-12 05:38:55 +00:00
LoopSimplify.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
LoopUnroll.cpp Revert "Revert r253253 and r253126: "Don't recompute LCSSA after loop-unrolling when possible."" 2015-12-09 18:20:28 +00:00
LoopUnrollRuntime.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
LoopUtils.cpp Revert r255115 until we figure out how to fix the bot failures. 2015-12-09 15:25:28 +00:00
LoopVersioning.cpp Re-commit r255115, with the PredicatedScalarEvolution class moved to 2015-12-09 16:06:28 +00:00
LowerInvoke.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
LowerSwitch.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
Makefile
…
Mem2Reg.cpp [Mem2Reg] Respect optnone 2015-12-11 13:36:59 +00:00
MetaRenamer.cpp Whoops, remove trailing whitespace. 2015-08-27 05:37:12 +00:00
ModuleUtils.cpp Create llvm.global_ctors in the new format. 2015-12-06 16:18:25 +00:00
PromoteMemoryToRegister.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
SSAUpdater.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
SimplifyCFG.cpp Don't create unnecessary PHIs 2015-12-14 10:57:01 +00:00
SimplifyIndVar.cpp [IndVars] Preserve LCSSA in `eliminateIdentitySCEV` 2015-10-07 17:38:31 +00:00
SimplifyInstructions.cpp [Utils] Put includes in correct order. NFC. 2015-11-24 18:57:06 +00:00
SimplifyLibCalls.cpp [SimplifyLibCalls] Optimization for pow(x, n) where n is some constant 2015-12-04 22:00:47 +00:00
SplitModule.cpp TransformUtils: Introduce module splitter. 2015-08-21 02:48:20 +00:00
SymbolRewriter.cpp Remove unnecessary includes 2015-08-08 00:41:53 +00:00
UnifyFunctionExitNodes.cpp TransformUtils: Remove implicit ilist iterator conversions, NFC 2015-10-13 02:39:05 +00:00
Utils.cpp Pass to emit DWARF path discriminators. 2014-03-03 20:06:11 +00:00
ValueMapper.cpp Bring r254336 back: 2015-12-01 15:19:48 +00:00