Weiming Zhao fa1cf8cd68 [ARM64] Prevent bit extraction to be adjusted by following shift ... For pattern like ((x >> C1) & Mask) << C2, DAG combiner may convert it into (x >> (C1-C2)) & (Mask << C2), which makes pattern matching of ubfx more difficult. For example: Given %shr = lshr i64 %x, 4 %and = and i64 %shr, 15 %arrayidx = getelementptr inbounds [8 x [64 x i64]]* @arr, i64 0, %i64 2, i64 %and %0 = load i64* %arrayidx With current shift folding, it takes 3 instrs to compute base address: lsr x8, x0, #1 and x8, x8, #0x78 add x8, x9, x8 If using ubfx, it only needs 2 instrs: ubfx x8, x0, #4, #4 add x8, x9, x8, lsl #3 This fixes bug 19589 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207702 91177308-0d34-0410-b5e6-96231b3b80d8		2014-04-30 21:07:24 +00:00
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CostTable.h	Add a overload to CostTable which allows it to infer the size of the table.	2013-08-09 19:33:32 +00:00
Target.td	[TableGen] Optionally forbid overlap between named and positional operands	2014-03-13 07:57:54 +00:00
TargetCallingConv.h	Replace '#include ValueTypes.h' with forward declarations.	2014-03-12 08:00:24 +00:00
TargetCallingConv.td	LLVM-1163: AAPCS-VFP violation when CPRC allocated to stack	2014-02-07 11:19:53 +00:00
TargetFrameLowering.h	[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.	2014-04-14 00:51:57 +00:00
TargetInstrInfo.h	[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.	2014-04-14 00:51:57 +00:00
TargetIntrinsicInfo.h	[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.	2014-04-15 06:32:26 +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	SimplifyLibCalls: Push TLI through the exp2->ldexp transform.	2014-02-04 20:27:23 +00:00
TargetLowering.h	[ARM64] Prevent bit extraction to be adjusted by following shift	2014-04-30 21:07:24 +00:00
TargetLoweringObjectFile.h	[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.	2014-04-14 00:51:57 +00:00
TargetMachine.h	Fix comment	2014-04-28 18:11:51 +00:00
TargetOpcodes.h	Replace PROLOG_LABEL with a new CFI_INSTRUCTION.	2014-03-07 06:08:31 +00:00
TargetOptions.h	Create MCTargetOptions.	2014-04-23 11:16:03 +00:00
TargetRegisterInfo.h	[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.	2014-04-14 00:51:57 +00:00
TargetSchedule.td	Machine model comments. Explain a ProcessorUnit's BufferSize.	2013-12-05 17:55:53 +00:00
TargetSelectionDAG.td	ARM64: initial backend import	2014-03-29 10:18:08 +00:00
TargetSelectionDAGInfo.h	Rename some member variables from TD to DL.	2014-02-18 15:33:12 +00:00
TargetSubtargetInfo.h	Added temp flag -misched-bench for staging in default changes.	2013-09-26 05:53:35 +00:00