Evan Cheng 86dd733bc8 Some enhancements for memcpy / memset inline expansion. ... 1. Teach it to use overlapping unaligned load / store to copy / set the trailing bytes. e.g. On 86, use two pairs of movups / movaps for 17 - 31 byte copies. 2. Use f64 for memcpy / memset on targets where i64 is not legal but f64 is. e.g. x86 and ARM. 3. When memcpy from a constant string, do *not* replace the load with a constant if it's not possible to materialize an integer immediate with a single instruction (required a new target hook: TLI.isIntImmLegal()). 4. Use unaligned load / stores more aggressively if target hooks indicates they are "fast". 5. Update ARM target hooks to use unaligned load / stores. e.g. vld1.8 / vst1.8. Also increase the threshold to something reasonable (8 for memset, 4 pairs for memcpy). This significantly improves Dhrystone, up to 50% on ARM iOS devices. rdar://12760078 llvm-svn: 169791		2012-12-10 23:21:26 +00:00
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Mangler.h	whitespace	2012-10-09 01:56:07 +00:00
Target.td	add TableGen support to create relationship maps between instructions	2012-10-25 15:54:06 +00:00
TargetCallingConv.h	OutputArg: added an index of the original argument to match the change to	2012-11-01 23:49:58 +00:00
TargetCallingConv.td	Add TableGen support for callee saved registers.	2012-01-17 22:46:58 +00:00
TargetFrameLowering.h	Stack Alignment: when creating stack objects in MachineFrameInfo, make sure	2012-12-04 00:52:33 +00:00
TargetInstrInfo.h	Sort the #include lines for the include/... tree with the script.	2012-12-03 17:02:12 +00:00
TargetIntrinsicInfo.h	Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION.	2012-09-17 06:59:23 +00:00
TargetItinerary.td	I'm introducing a new machine model to simultaneously allow simple	2012-07-07 04:00:00 +00:00
TargetJITInfo.h	Sort the #include lines for the include/... tree with the script.	2012-12-03 17:02:12 +00:00
TargetLibraryInfo.h	Sort the #include lines for the include/... tree with the script.	2012-12-03 17:02:12 +00:00
TargetLowering.h	Some enhancements for memcpy / memset inline expansion.	2012-12-10 23:21:26 +00:00
TargetLoweringObjectFile.h	Sort the #include lines for the include/... tree with the script.	2012-12-03 17:02:12 +00:00
TargetMachine.h	Sort the #include lines for the include/... tree with the script.	2012-12-03 17:02:12 +00:00
TargetOpcodes.h	Add a new optimization pass: Stack Coloring, that merges disjoint static allocations (allocas). Allocas are known to be	2012-09-06 09:17:37 +00:00
TargetOptions.h	Whitespace.	2012-11-29 20:58:08 +00:00
TargetRegisterInfo.h	Remove two dead functions resulting from a bad rebase.	2012-12-05 18:52:15 +00:00
TargetSchedule.td	Added instregex support to TableGen subtarget emitter.	2012-10-03 23:06:32 +00:00
TargetSelectionDAG.td	Remove extra MayLoad/MayStore flags from atomic_load/store.	2012-08-28 03:11:32 +00:00
TargetSelectionDAGInfo.h	Move TargetData to DataLayout.	2012-10-08 16:38:25 +00:00
TargetSubtargetInfo.h	misched: Allow subtargets to enable misched and dependent options.	2012-11-13 08:47:29 +00:00
TargetTransformImpl.h	LoopVectorize: support vectorizing intrinsic calls	2012-12-09 20:42:17 +00:00