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Sanjoy Das 3336f681e3 [Verifier] Add verification for TBAA metadata 
Summary:
This change adds some verification in the IR verifier around struct path
TBAA metadata.

Other than some basic sanity checks (e.g. we get constant integers where
we expect constant integers), this checks:

 - That by the time an struct access tuple `(base-type, offset)` is
   "reduced" to a scalar base type, the offset is `0`.  For instance, in
   C++ you can't start from, say `("struct-a", 16)`, and end up with
   `("int", 4)` -- by the time the base type is `"int"`, the offset
   better be zero.  In particular, a variant of this invariant is needed
   for `llvm::getMostGenericTBAA` to be correct.

 - That there are no cycles in a struct path.

 - That struct type nodes have their offsets listed in an ascending
   order.

 - That when generating the struct access path, you eventually reach the
   access type listed in the tbaa tag node.

Reviewers: dexonsmith, chandlerc, reames, mehdi_amini, manmanren

Subscribers: mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D26438

llvm-svn: 289402
 		2016-12-11 20:07:15 +00:00
..
AsmWriter.cpp Fix -Werror build with clang-cl. 2016-11-11 23:58:11 +00:00
AttributeImpl.h [ADT, IR] Fix some Clang-tidy modernize-use-equals-delete and Include What You Use warnings; other minor fixes (NFC). 2016-12-07 22:06:02 +00:00
AttributeSetNode.h [ADT, IR] Fix some Clang-tidy modernize-use-equals-delete and Include What You Use warnings; other minor fixes (NFC). 2016-12-07 22:06:02 +00:00
Attributes.cpp Kill deprecated attribute API 2016-11-06 07:48:46 +00:00
AttributesCompatFunc.td Provide a way to specify inliner's attribute compatibility and merging. 2015-12-22 23:57:37 +00:00
AutoUpgrade.cpp [X86] Remove masking from 512-bit VPERMIL intrinsics in preparation for being able to constant fold them in InstCombineCalls like we do for 128/256-bit. 2016-12-11 01:26:44 +00:00
BasicBlock.cpp Don't create a SymbolTable in Function when the LLVMContext discards value names (NFC) 2016-09-17 06:00:02 +00:00
CMakeLists.txt [CMake] NFC. Updating CMake dependency specifications 2016-11-17 04:36:50 +00:00
Comdat.cpp [NFC] Remove some dead code: 2016-05-11 16:38:40 +00:00
ConstantFold.cpp IR: Move NumElements field from {Array,Vector}Type to SequentialType. 2016-12-02 03:20:58 +00:00
ConstantFold.h IR: Introduce inrange attribute on getelementptr indices. 2016-11-10 22:34:55 +00:00
ConstantRange.cpp Factor out common parts of LVI and Float2Int into ConstantRange [NFCI] 2016-12-01 20:08:47 +00:00
Constants.cpp [Constants] don't die processing non-ConstantInt GEP indices in isGEPWithNoNotionalOverIndexing() (PR31262) 2016-12-11 20:07:02 +00:00
ConstantsContext.h [ADT, IR] Fix some Clang-tidy modernize-use-equals-delete and Include What You Use warnings; other minor fixes (NFC). 2016-12-07 22:06:02 +00:00
Core.cpp IR: Change PointerType to derive from Type rather than SequentialType. 2016-12-02 03:05:41 +00:00
DIBuilder.cpp [DIExpression] Introduce a dedicated DW_OP_LLVM_fragment operation 2016-12-05 18:04:47 +00:00
DataLayout.cpp IR: Change the gep_type_iterator API to avoid always exposing the "current" type. 2016-12-02 02:24:42 +00:00
DebugInfo.cpp Add -strip-nonlinetable-debuginfo capability 2016-10-25 18:44:13 +00:00
DebugInfoMetadata.cpp [DIExpression] Introduce a dedicated DW_OP_LLVM_fragment operation 2016-12-05 18:04:47 +00:00
DebugLoc.cpp [NFC] Header cleanup 2016-04-18 09:17:29 +00:00
DiagnosticInfo.cpp [GVN, OptDiag] Include the value that is forwarded in load elimination 2016-12-01 17:34:44 +00:00
DiagnosticPrinter.cpp
…
Dominators.cpp [PM] Change the static object whose address is used to uniquely identify 2016-11-23 17:53:26 +00:00
Function.cpp Expandload and Compressstore intrinsics 2016-11-03 03:23:55 +00:00
GCOV.cpp Support: Remove MemoryObject and DataStreamer interfaces. 2016-11-02 00:08:37 +00:00
GVMaterializer.cpp
…
Globals.cpp IR, X86: Understand !absolute_symbol metadata on global variables. 2016-12-08 19:01:00 +00:00
IRBuilder.cpp Add invariant start call creation in IRBuilder.NFC 2016-07-22 20:57:23 +00:00
IRPrintingPasses.cpp Consistently use ModuleAnalysisManager 2016-08-09 00:28:38 +00:00
InlineAsm.cpp Replace "fallthrough" comments with LLVM_FALLTHROUGH 2016-08-17 05:10:15 +00:00
Instruction.cpp fix documentation comments; NFC 2016-10-05 18:51:12 +00:00
Instructions.cpp fix comment formatting; NFC 2016-11-16 18:09:44 +00:00
IntrinsicInst.cpp [Profile] code refactoring: make getStep a method in base class 2016-09-20 19:07:22 +00:00
LLVMBuild.txt
…
LLVMContext.cpp IR, X86: Understand !absolute_symbol metadata on global variables. 2016-12-08 19:01:00 +00:00
LLVMContextImpl.cpp Use unique_ptr in LLVMContextImpl's constant maps. 2016-10-10 16:26:13 +00:00
LLVMContextImpl.h Add DWARF debug info support for C++11 inline namespaces. 2016-11-03 19:42:02 +00:00
LegacyPassManager.cpp Timer: Track name and description. 2016-11-18 19:43:18 +00:00
MDBuilder.cpp Use profile info to set function section prefix to group hot/cold functions. 2016-10-18 20:42:47 +00:00
Mangler.cpp Remove the default constructor and count variable from the Mangler since 2016-09-29 02:03:50 +00:00
Metadata.cpp Add -strip-nonlinetable-debuginfo capability 2016-10-25 18:44:13 +00:00
MetadataImpl.h
…
Module.cpp Bitcode: Change the materializer interface to return llvm::Error. 2016-11-09 17:49:19 +00:00
ModuleSummaryIndex.cpp ThinLTO: handles modules with empty summaries 2016-10-08 04:44:18 +00:00
Operator.cpp IR: Change the gep_type_iterator API to avoid always exposing the "current" type. 2016-12-02 02:24:42 +00:00
OptBisect.cpp Removing unused function. 2016-04-22 22:24:20 +00:00
Pass.cpp Use StringRef in Pass Info/Support API (NFC) 2016-10-01 04:03:30 +00:00
PassManager.cpp [PM] Support invalidation of inner analysis managers from a pass over the outer IR unit. 2016-12-10 06:34:44 +00:00
PassRegistry.cpp Use the range variant of find instead of unpacking begin/end 2016-08-11 22:21:41 +00:00
ProfileSummary.cpp Reapply r271728 after adding move cobstructor for ProfileSummaryInfo 2016-06-03 22:54:26 +00:00
Statepoint.cpp Introduce an GCRelocateInst class [NFC] 2016-04-12 18:05:10 +00:00
SymbolTableListTraitsImpl.h ADT: Remove external uses of ilist_iterator, NFC 2016-09-03 01:22:56 +00:00
Type.cpp IR: Move NumElements field from {Array,Vector}Type to SequentialType. 2016-12-02 03:20:58 +00:00
TypeFinder.cpp Apply clang-tidy's modernize-loop-convert to most of lib/IR. 2016-06-26 14:10:56 +00:00
Use.cpp
…
User.cpp Retire llvm::alignOf in favor of C++11 alignof. 2016-10-20 15:02:18 +00:00
Value.cpp [BDCE] Skip metadata while replacing uses. 2016-12-07 21:47:32 +00:00
ValueSymbolTable.cpp Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes. 2016-08-23 17:14:32 +00:00
ValueTypes.cpp getVectorElementType().getSizeInBits() -> getScalarSizeInBits() ; NFCI 2016-09-14 16:37:15 +00:00
Verifier.cpp [Verifier] Add verification for TBAA metadata 2016-12-11 20:07:15 +00:00