Chandler Carruth aea541125e Fix the root cause of PR15348 by correctly handling alignment 0 on ... memory intrinsics in the SDAG builder. When alignment is zero, the lang ref says that *no* alignment assumptions can be made. This is the exact opposite of the internal API contracts of the DAG where alignment 0 indicates that the alignment can be made to be anything desired. There is another, more explicit alignment that is better suited for the role of "no alignment at all": an alignment of 1. Map the intrinsic alignment to this early so that we don't end up generating aligned DAGs. It is really terrifying that we've never seen this before, but we suddenly started generating a large number of alignment 0 memcpys due to the new code to do memcpy-based copying of POD class members. That patch contains a bug that rounds bitfield alignments down when they are the first field. This can in turn produce zero alignments. This fixes weird crashes I've seen in library users of LLVM on 32-bit hosts, etc. llvm-svn: 176022		2013-02-25 14:20:21 +00:00
..
CMakeLists.txt
DAGCombiner.cpp	DAGCombiner: Make the post-legalize vector op optimization more aggressive.	2013-02-21 15:24:35 +00:00
FastISel.cpp	Fix isa<> check which could never be true.	2013-02-22 01:50:38 +00:00
FunctionLoweringInfo.cpp	Revert 172027 and 174336. Remove diagnostics about over-aligned stack objects.	2013-02-08 20:35:15 +00:00
InstrEmitter.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstrEmitter.h	Use MachineInstrBuilder in InstrEmitter.	2012-12-20 18:08:09 +00:00
LegalizeDAG.cpp	Move the SplatByte helper to APInt and generalize it a bit.	2013-02-20 13:00:06 +00:00
LegalizeFloatTypes.cpp	Make APFloat constructor require explicit semantics.	2013-01-22 09:46:31 +00:00
LegalizeIntegerTypes.cpp	Legalizer: Reword comment again, per Duncan's suggestion.	2013-01-27 21:02:52 +00:00
LegalizeTypes.cpp	Refactor to expose RTLIB calls to targets.	2013-01-09 13:18:15 +00:00
LegalizeTypes.h	This patch aims to reduce compile time in LegalizeTypes by using SmallDenseMap,	2013-01-25 15:18:54 +00:00
LegalizeTypesGeneric.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LegalizeVectorOps.cpp	SelectionDAG compile time improvement.	2013-02-22 23:33:30 +00:00
LegalizeVectorTypes.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
LLVMBuild.txt
Makefile
ResourcePriorityQueue.cpp	Change TargetLowering::getRegClassFor to take an MVT, instead of EVT.	2012-12-13 06:34:11 +00:00
ScheduleDAGFast.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
ScheduleDAGRRList.cpp	Add a special handling case for untyped CopyFromReg node in GetCostForDef() of ScheduleDAGRRList	2013-01-29 21:18:43 +00:00
ScheduleDAGSDNodes.cpp	Change TargetLowering::getRepRegClassFor to take an MVT, instead of	2012-12-13 18:45:35 +00:00
ScheduleDAGSDNodes.h	Fix #includes, so we include only what we really need.	2013-02-20 00:26:25 +00:00
ScheduleDAGVLIW.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
SDNodeDbgValue.h	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
SDNodeOrdering.h	Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION.	2012-09-18 02:01:41 +00:00
SelectionDAG.cpp	Fix the root cause of PR15348 by correctly handling alignment 0 on	2013-02-25 14:20:21 +00:00
SelectionDAGBuilder.cpp	Fix the root cause of PR15348 by correctly handling alignment 0 on	2013-02-25 14:20:21 +00:00
SelectionDAGBuilder.h	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
SelectionDAGDumper.cpp	Teach SDISel to combine fsin / fcos into a fsincos node if the following	2013-01-29 02:32:37 +00:00
SelectionDAGISel.cpp	[ms-inline asm] Remove a redundant call to the setHasMSInlineAsm function.	2013-02-18 20:13:59 +00:00
SelectionDAGPrinter.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
TargetLowering.cpp	Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.	2013-02-12 21:21:59 +00:00
TargetSelectionDAGInfo.cpp	Move TargetData to DataLayout.	2012-10-08 16:38:25 +00:00