Philip Reames 6bde9f6994 Merge empty landing pads in SimplifyCFG ... This patch tries to merge duplicate landing pads when they branch to a common shared target. Given IR that looks like this: lpad1: %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 cleanup br label %shared_resume lpad2: %exn2 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 cleanup br label %shared_resume shared_resume: call void @fn() ret void } We can rewrite the users of both landing pad blocks to use one of them. This will generally allow the shared_resume block to be merged with the common landing pad as well. Without this change, tail duplication would likely kick in - creating N (2 in this case) copies of the shared_resume basic block. Differential Revision: http://reviews.llvm.org/D8297 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233125 91177308-0d34-0410-b5e6-96231b3b80d8		2015-03-24 22:28:45 +00:00
..
AddDiscriminators.cpp	IR: Split Metadata from Value	2014-12-09 18:38:53 +00:00
ASanStackFrameLayout.cpp	[asan] Reuse a common function.	2015-02-16 14:49:37 +00:00
BasicBlockUtils.cpp	Teach SplitBlockPredecessors how to handle landingpad blocks.	2015-01-28 23:06:47 +00:00
BreakCriticalEdges.cpp	[PM] Remove the Pass argument from all of the critical edge splitting	2015-01-19 12:09:11 +00:00
BuildLibCalls.cpp	DataLayout is mandatory, update the API to reflect it with references.	2015-03-10 02:37:25 +00:00
BypassSlowDivision.cpp	[C++] Use 'nullptr'. Transforms edition.	2014-04-25 05:29:35 +00:00
CloneFunction.cpp	Fixing a bug with WinEH PHI handling	2015-03-20 21:42:54 +00:00
CloneModule.cpp	Remove a bad cast in CloneModule()	2014-12-23 08:23:45 +00:00
CMakeLists.txt	Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.	2015-02-11 03:28:02 +00:00
CmpInstAnalysis.cpp	[C++] Use 'nullptr'. Transforms edition.	2014-04-25 05:29:35 +00:00
CodeExtractor.cpp	[opaque pointer type] Start migrating GEP creation to explicitly specify the pointee type	2015-03-14 01:53:18 +00:00
CtorUtils.cpp	[ctorutils] Update and sort includes. NFC.	2015-03-23 19:06:17 +00:00
DemoteRegToStack.cpp	Fix a bug in DemoteRegToStack where a reload instruction was inserted into the	2015-02-09 06:38:23 +00:00
FlattenCFG.cpp	utils: Fix segfault in flattencfg	2014-08-13 20:31:53 +00:00
GlobalStatus.cpp	Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>	2014-11-19 07:49:26 +00:00
InlineFunction.cpp	Inliner should not add callgraph edges for intrinsic calls (PR22857)	2015-03-11 15:12:32 +00:00
InstructionNamer.cpp	[C++11] Add 'override' keyword to virtual methods that override their base class.	2014-03-05 09:10:37 +00:00
IntegerDivision.cpp	Fix heap-use-after-free bug in expandSDiv when the operands are	2014-11-05 21:28:24 +00:00
LCSSA.cpp	[PM] Split the LoopInfo object apart from the legacy pass, creating	2015-01-17 14:16:18 +00:00
LLVMBuild.txt	Update libdeps since TLI was moved from Target to Analysis in r226078.	2015-01-15 05:21:00 +00:00
Local.cpp	Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.	2015-03-23 19:32:43 +00:00
LoopSimplify.cpp	Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.	2015-03-23 19:32:43 +00:00
LoopUnroll.cpp	Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.	2015-03-23 19:32:43 +00:00
LoopUnrollRuntime.cpp	DataLayout is mandatory, update the API to reflect it with references.	2015-03-10 02:37:25 +00:00
LowerInvoke.cpp	[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE	2014-04-22 02:55:47 +00:00
LowerSwitch.cpp	Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.	2015-03-23 19:32:43 +00:00
Makefile
Mem2Reg.cpp	[PM] Split the AssumptionTracker immutable pass into two separate APIs:	2015-01-04 12:03:27 +00:00
MetaRenamer.cpp	[C++11] Add 'override' keyword to virtual methods that override their base class.	2014-03-05 09:10:37 +00:00
ModuleUtils.cpp	Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size.	2014-08-21 05:55:13 +00:00
PromoteMemoryToRegister.cpp	DataLayout is mandatory, update the API to reflect it with references.	2015-03-10 02:37:25 +00:00
SimplifyCFG.cpp	Merge empty landing pads in SimplifyCFG	2015-03-24 22:28:45 +00:00
SimplifyIndVar.cpp	[IndVarSimplify] use the "canonical" way to infer no-wrap.	2015-03-04 22:24:23 +00:00
SimplifyInstructions.cpp	DataLayout is mandatory, update the API to reflect it with references.	2015-03-10 02:37:25 +00:00
SimplifyLibCalls.cpp	[SimplifyLibCalls] Fix negative shifts being produced by the memchr -> bitfield transform.	2015-03-21 22:04:26 +00:00
SSAUpdater.cpp	DataLayout is mandatory, update the API to reflect it with references.	2015-03-10 02:37:25 +00:00
SymbolRewriter.cpp	Purge unused includes throughout libSupport.	2015-03-23 18:07:13 +00:00
UnifyFunctionExitNodes.cpp	[LPM] Stop using the string based preservation API. It is an	2015-01-28 04:57:56 +00:00
Utils.cpp	Pass to emit DWARF path discriminators.	2014-03-03 20:06:11 +00:00
ValueMapper.cpp	MapMetadata: Allow unresolved metadata if it won't change	2015-03-17 01:14:40 +00:00