Peter Collingbourne cdc1df0c0c hwasan: Improve precision of checks using short granule tags. ... A short granule is a granule of size between 1 and `TG-1` bytes. The size of a short granule is stored at the location in shadow memory where the granule's tag is normally stored, while the granule's actual tag is stored in the last byte of the granule. This means that in order to verify that a pointer tag matches a memory tag, HWASAN must check for two possibilities: * the pointer tag is equal to the memory tag in shadow memory, or * the shadow memory tag is actually a short granule size, the value being loaded is in bounds of the granule and the pointer tag is equal to the last byte of the granule. Pointer tags between 1 to `TG-1` are possible and are as likely as any other tag. This means that these tags in memory have two interpretations: the full tag interpretation (where the pointer tag is between 1 and `TG-1` and the last byte of the granule is ordinary data) and the short tag interpretation (where the pointer tag is stored in the granule). When HWASAN detects an error near a memory tag between 1 and `TG-1`, it will show both the memory tag and the last byte of the granule. Currently, it is up to the user to disambiguate the two possibilities. Because this functionality obsoletes the right aligned heap feature of the HWASAN memory allocator (and because we can no longer easily test it), the feature is removed. Also update the documentation to cover both short granule tags and outlined checks. Differential Revision: https://reviews.llvm.org/D63908 llvm-svn: 365551		2019-07-09 20:22:36 +00:00
..
AsmParser	Revert CMake: Make most target symbols hidden by default	2019-06-11 03:21:13 +00:00
Disassembler	Revert CMake: Make most target symbols hidden by default	2019-06-11 03:21:13 +00:00
MCTargetDesc	Revert CMake: Make most target symbols hidden by default	2019-06-11 03:21:13 +00:00
TargetInfo	Revert CMake: Make most target symbols hidden by default	2019-06-11 03:21:13 +00:00
Utils	AArch64: annotate atomics with dropped acquire semantics when printing.	2019-02-06 15:07:59 +00:00
AArch64.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64A53Fix835769.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64A57FPLoadBalancing.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64AdvSIMDScalarPass.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64AsmPrinter.cpp	hwasan: Improve precision of checks using short granule tags.	2019-07-09 20:22:36 +00:00
AArch64BranchTargets.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64CallingConvention.cpp	[AArch64] Include AArch64GenCallingConv.inc once	2019-01-28 21:28:40 +00:00
AArch64CallingConvention.h	[AArch64] Include AArch64GenCallingConv.inc once	2019-01-28 21:28:40 +00:00
AArch64CallingConvention.td	[COFF, ARM64] Fix ABI implementation of struct returns	2019-05-03 21:12:36 +00:00
AArch64CallLowering.cpp	[AArch64 GlobalISel] Cleanup CallLowering. NFCI	2019-06-27 09:24:30 +00:00
AArch64CallLowering.h	[AArch64 GlobalISel] Cleanup CallLowering. NFCI	2019-06-27 09:24:30 +00:00
AArch64CleanupLocalDynamicTLSPass.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64CollectLOH.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64CompressJumpTables.cpp	[AArch64] Fix scan-build null/uninitialized pointer warnings. NFCI.	2019-05-08 16:27:24 +00:00
AArch64CondBrTuning.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64ConditionalCompares.cpp	[IR] Refactor attribute methods in Function class (NFC)	2019-04-04 22:40:06 +00:00
AArch64ConditionOptimizer.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64DeadRegisterDefinitionsPass.cpp	[AArch64] Fix bug 35094 atomicrmw on Armv8.1-A+lse	2019-03-18 09:21:06 +00:00
AArch64ExpandImm.cpp	[AArch64] Prefer "mov" over "orr" to materialize constants.	2019-03-25 21:25:28 +00:00
AArch64ExpandImm.h	[AArch64] Refactor floating point materialization. NFC	2019-03-18 18:23:23 +00:00
AArch64ExpandPseudoInsts.cpp	[AArch64] Allow -mattr=tpidr-el[1|2|3]	2019-03-21 11:30:17 +00:00
AArch64FalkorHWPFFix.cpp	CodeGen: Introduce a class for registers	2019-06-24 15:50:29 +00:00
AArch64FastISel.cpp	[COFF, ARM64] Fix encoding of debugtrap for Windows	2019-06-21 23:38:05 +00:00
AArch64FrameLowering.cpp	Don't look for the TargetFrameLowering in the implementation	2019-06-25 20:53:35 +00:00
AArch64FrameLowering.h	AArch64: Prefer FP-relative debug locations in HWASANified functions.	2019-06-22 00:06:51 +00:00
AArch64GenRegisterBankInfo.def	[AArch64][GlobalISel] Overhaul legalization & isel or shifts to select immediate forms.	2019-07-03 01:49:06 +00:00
AArch64InstrAtomics.td	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64InstrFormats.td	[AArch64] Add support for MTE intrinsics	2019-04-23 09:39:58 +00:00
AArch64InstrInfo.cpp	[SystemZ, RegAlloc] Favor 3-address instructions during instruction selection.	2019-06-08 06:19:15 +00:00
AArch64InstrInfo.h	[SystemZ, RegAlloc] Favor 3-address instructions during instruction selection.	2019-06-08 06:19:15 +00:00
AArch64InstrInfo.td	[COFF, ARM64] Fix encoding of debugtrap for Windows	2019-06-21 23:38:05 +00:00
AArch64InstructionSelector.cpp	[AArch64][GlobalISel] Use TST for comparisons when possible	2019-07-08 22:58:36 +00:00
AArch64ISelDAGToDAG.cpp	AArch64: Add support for reading pc using llvm.read_register.	2019-06-22 03:03:25 +00:00
AArch64ISelLowering.cpp	[Codegen][X86][AArch64][ARM][PowerPC] Inc-of-add vs sub-of-not (PR42457)	2019-07-03 09:41:35 +00:00
AArch64ISelLowering.h	[Codegen][X86][AArch64][ARM][PowerPC] Inc-of-add vs sub-of-not (PR42457)	2019-07-03 09:41:35 +00:00
AArch64LegalizerInfo.cpp	GlobalISel: Convert some build functions to using SrcOp/DstOp	2019-07-08 16:27:47 +00:00
AArch64LegalizerInfo.h	[AArch64][GlobalISel] Overhaul legalization & isel or shifts to select immediate forms.	2019-07-03 01:49:06 +00:00
AArch64LoadStoreOptimizer.cpp	[AArch64] Remove scan-build "Value stored during its initialization is never read" warnings. NFCI.	2019-05-08 16:29:39 +00:00
AArch64MachineFunctionInfo.h	[COFF, ARM64] Fix ABI implementation of struct returns	2019-05-03 21:12:36 +00:00
AArch64MacroFusion.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64MacroFusion.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64MCInstLower.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64MCInstLower.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64PBQPRegAlloc.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64PBQPRegAlloc.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64PerfectShuffle.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64PfmCounters.td	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64PreLegalizerCombiner.cpp	[AArch64][GlobalISel] Optimize conditional branches followed by unconditional branches	2019-07-09 16:05:59 +00:00
AArch64PromoteConstant.cpp	[opaque pointer types] Pass value type to LoadInst creation.	2019-02-01 20:44:24 +00:00
AArch64RedundantCopyElimination.cpp	CodeGen: Introduce a class for registers	2019-06-24 15:50:29 +00:00
AArch64RegisterBankInfo.cpp	[AArch64][GlobalISel] Overhaul legalization & isel or shifts to select immediate forms.	2019-07-03 01:49:06 +00:00
AArch64RegisterBankInfo.h	[AArch64][GlobalISel] Overhaul legalization & isel or shifts to select immediate forms.	2019-07-03 01:49:06 +00:00
AArch64RegisterBanks.td	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64RegisterInfo.cpp	CodeGen: Introduce a class for registers	2019-06-24 15:50:29 +00:00
AArch64RegisterInfo.h	CodeGen: Introduce a class for registers	2019-06-24 15:50:29 +00:00
AArch64RegisterInfo.td	[AArch64] Support reserving arbitrary general purpose registers	2019-02-13 17:28:47 +00:00
AArch64SchedA53.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedA57.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedA57WriteRes.td	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64SchedCyclone.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedExynosM1.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedExynosM3.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedExynosM4.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedFalkor.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedFalkorDetails.td	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64SchedKryo.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedKryoDetails.td	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64SchedPredExynos.td	[AArch64] Update for Exynos	2019-05-02 22:01:39 +00:00
AArch64SchedPredicates.td	[AArch64] Update for Exynos	2019-05-02 22:01:39 +00:00
AArch64SchedThunderX2T99.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64SchedThunderX.td	[AArch64][SVE2] Add SVE2 target features to backend and TargetParser	2019-05-13 10:10:24 +00:00
AArch64Schedule.td	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64SelectionDAGInfo.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64SelectionDAGInfo.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64SIMDInstrOpt.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64SpeculationHardening.cpp	[SLH] AArch64: correctly pick temporary register to mask SP	2019-01-23 08:18:39 +00:00
AArch64StorePairSuppress.cpp	[CodeGen] Add "const" to MachineInstr::mayAlias	2019-04-19 09:08:38 +00:00
AArch64Subtarget.cpp	[AArch64] Add support for Cortex-A76 and Cortex-A76AE	2019-02-25 15:08:27 +00:00
AArch64Subtarget.h	[AArch64] Subtarget crypto extension defaults	2019-05-22 07:10:27 +00:00
AArch64SVEInstrInfo.td	[AArch64][SVE2] Asm: support WHILE instructions	2019-05-31 09:13:55 +00:00
AArch64SystemOperands.td	[AArch64] Add v8.5-a Memory Tagging GMID_EL1 register	2019-04-01 14:41:14 +00:00
AArch64TargetMachine.cpp	[AArch64] Merge globals when optimising for size	2019-06-12 08:28:35 +00:00
AArch64TargetMachine.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64TargetObjectFile.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64TargetObjectFile.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AArch64TargetTransformInfo.cpp	[NFC] Test commit, delete trailing whitespace	2019-05-28 12:36:39 +00:00
AArch64TargetTransformInfo.h	[GlobalISel][Localizer] Rewrite localizer to run in 2 phases, inter & intra block.	2019-06-17 23:20:29 +00:00
CMakeLists.txt	[AArch64] Move InstPrinter files to MCTargetDesc. NFC	2019-05-10 23:50:01 +00:00
LLVMBuild.txt	[AArch64] Move InstPrinter files to MCTargetDesc. NFC	2019-05-10 23:50:01 +00:00
SVEInstrFormats.td	[AArch64][SVE2] Asm: support WHILE instructions	2019-05-31 09:13:55 +00:00