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Adrian Prantl 57907269da [DIExpression] Introduce a dedicated DW_OP_LLVM_fragment operation 
so we can stop using DW_OP_bit_piece with the wrong semantics.

The entire back story can be found here:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20161114/405934.html

The gist is that in LLVM we've been misinterpreting DW_OP_bit_piece's
offset field to mean the offset into the source variable rather than
the offset into the location at the top the DWARF expression stack. In
order to be able to fix this in a subsequent patch, this patch
introduces a dedicated DW_OP_LLVM_fragment operation with the
semantics that we used to apply to DW_OP_bit_piece, which is what we
actually need while inside of LLVM. This patch is complete with a
bitcode upgrade for expressions using the old format. It does not yet
fix the DWARF backend to use DW_OP_bit_piece correctly.

Implementation note: We discussed several options for implementing
this, including reserving a dedicated field in DIExpression for the
fragment size and offset, but using an custom operator at the end of
the expression works just fine and is more efficient because we then
only pay for it when we need it.

Differential Revision: https://reviews.llvm.org/D27361
rdar://problem/29335809

llvm-svn: 288683
2016-12-05 18:04:47 +00:00
..
2002-03-08-NameCollision2.ll
2002-03-08-NameCollision.ll
2002-04-07-HexFloatConstants.ll
2002-04-07-InfConstant.ll
2002-04-29-NameBinding.ll
2002-05-02-InvalidForwardRef.ll
2002-07-14-OpaqueType.ll
2002-07-25-QuoteInString.ll
2002-07-25-ReturnPtrFunction.ll
2002-07-31-SlashInString.ll
2002-08-15-CastAmbiguity.ll
2002-08-15-ConstantExprProblem.ll
2002-08-15-UnresolvedGlobalReference.ll
2002-08-16-ConstExprInlined.ll
2002-08-19-BytecodeReader.ll
2002-08-22-DominanceProblem.ll
2002-10-08-LargeArrayPerformance.ll
2002-10-13-ConstantEncodingProblem.ll
2002-12-15-GlobalResolve.ll
2003-01-30-UnsignedString.ll
2003-04-15-ConstantInitAssertion.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2003-04-25-UnresolvedGlobalReference.ll
2003-05-03-BytecodeReaderProblem.ll
2003-05-12-MinIntProblem.ll
2003-05-15-AssemblerProblem.ll
2003-05-15-SwitchBug.ll
2003-05-21-ConstantShiftExpr.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2003-05-21-EmptyStructTest.ll
2003-05-21-MalformedShiftCrash.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2003-05-21-MalformedStructCrash.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2003-08-20-ConstantExprGEP-Fold.ll
2003-08-21-ConstantExprCast-Fold.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2003-11-05-ConstantExprShift.ll
2003-11-11-ImplicitRename.ll
2003-11-12-ConstantExprCast.ll
2003-11-24-SymbolTableCrash.ll
2004-01-11-getelementptrfolding.ll
2004-01-20-MaxLongLong.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2004-02-01-NegativeZero.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2004-02-27-SelfUseAssertError.ll
2004-03-07-FunctionAddressAlignment.ll
2004-03-30-UnclosedFunctionCrash.ll
2004-04-04-GetElementPtrIndexTypes.ll
2004-06-07-VerifierBug.ll
2004-10-22-BCWriterUndefBug.ll
2004-11-28-InvalidTypeCrash.ll
2005-01-03-FPConstantDisassembly.ll
2005-01-31-CallingAggregateFunction.ll
2005-05-05-OpaqueUndefValues.ll
2005-12-21-ZeroInitVector.ll
2006-09-28-CrashOnInvalid.ll
2006-12-09-Cast-To-Bool.ll
2007-01-02-Undefined-Arg-Type.ll
2007-01-05-Cmp-ConstExpr.ll
2007-01-16-CrashOnBadCast2.ll
2007-01-16-CrashOnBadCast.ll
2007-03-18-InvalidNumberedVar.ll
2007-03-19-NegValue.ll
2007-04-20-AlignedLoad.ll
2007-04-20-AlignedStore.ll
2007-04-25-AssemblerFoldExternWeak.ll
2007-05-21-Escape.ll
2007-07-19-ParamAttrAmbiguity.ll
2007-08-06-AliasInvalid.ll
2007-09-10-AliasFwdRef.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
2007-09-29-GC.ll
2007-11-26-AttributeOverload.ll
2007-12-11-AddressSpaces.ll
2008-01-11-VarargAttrs.ll
2008-02-18-IntPointerCrash.ll
2008-07-10-APInt.ll
2008-09-02-FunctionNotes2.ll
2008-09-02-FunctionNotes.ll
2008-09-29-RetAttr.ll
2008-10-14-QuoteInName.ll
2009-02-01-UnnamedForwardRef.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
2009-02-28-CastOpc.ll
2009-02-28-StripOpaqueName.ll
2009-03-24-ZextConstantExpr.ll
2009-07-24-ZeroArgGEP.ll
2010-02-05-FunctionLocalMetadataBecomesNull.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
addrspacecast-alias.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
aggregate-constant-values.ll
aggregate-return-single-value.ll
alias-redefinition.ll AsmParser: Make the code for parsing unnamed aliases more closely resemble that for unnamed globals. 2015-11-25 02:54:07 +00:00
alias-use-list-order.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
align-inst-alloca.ll
align-inst-load.ll
align-inst-store.ll
align-inst.ll
alignstack.ll
alloca-invalid-type-2.ll
alloca-invalid-type.ll
alloca-size-one.ll
anon-functions.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
atomic.ll
attribute-builtin.ll
auto_upgrade_intrinsics.ll Revert "Revert "Invariant start/end intrinsics overloaded for address space"" 2016-08-13 23:31:24 +00:00
autoupgrade-thread-pointer.ll [AArch64] [ARM] Make a target-independent llvm.thread.pointer intrinsic. 2016-04-19 20:51:05 +00:00
bcwrap.ll
call-invalid-1.ll
comment.ll
ConstantExprFold.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
ConstantExprFoldCast.ll Fix constant folding of addrspacecast of null 2016-05-21 00:14:04 +00:00
ConstantExprFoldSelect.ll
ConstantExprNoFold.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
debug-info.ll Macro debug info support in LLVM IR 2015-12-10 12:56:35 +00:00
dicompileunit.ll DebugInfo: Add flag to CU to disable emission of inline debug info into the skeleton CU 2016-08-24 18:29:49 +00:00
dicompositetype-members.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
diexpression.ll [DIExpression] Introduce a dedicated DW_OP_LLVM_fragment operation 2016-12-05 18:04:47 +00:00
difile-escaped-chars.ll
diglobalvariable.ll DebugInfo: preparation to implement DW_AT_alignment 2016-10-20 00:13:12 +00:00
diimportedentity.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dilexicalblock.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dilocalvariable-arg-large.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dilocalvariable.ll DebugInfo: preparation to implement DW_AT_alignment 2016-10-20 00:13:12 +00:00
dilocation.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dimodule.ll
dinamespace.ll Add DWARF debug info support for C++11 inline namespaces. 2016-11-03 19:42:02 +00:00
diobjcproperty.ll
distinct-mdnode.ll
disubprogram.ll Support the DW_AT_noreturn DWARF flag. 2016-08-17 16:02:43 +00:00
disubrange-empty-array.ll
disubroutinetype.ll [DebugInfo] Add calling convention support for DWARF and CodeView 2016-06-08 20:34:29 +00:00
ditemplateparameter.ll
ditype-large-values.ll DebugInfo: change alignment type from uint64_t to uint32_t to save space. 2016-10-18 14:31:22 +00:00
drop-debug-info.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
externally-initialized.ll
extractvalue-invalid-idx.ll
extractvalue-no-idx.ll
fast-math-flags.ll
flags.ll
generic-debug-node.ll
getelementptr_invalid_ptr.ll
getelementptr_struct.ll
getelementptr_vec_idx1.ll
getelementptr_vec_idx2.ll
getelementptr_vec_idx3.ll
getelementptr_vec_idx4.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
getelementptr_vec_struct.ll
getelementptr.ll IR: Introduce inrange attribute on getelementptr indices. 2016-11-10 22:34:55 +00:00
getInt.ll
global-addrspace-forwardref.ll Allow global address space forward decls using IDs in .ll files. 2015-09-03 18:06:44 +00:00
gv-invalid-type.ll
half-constprop.ll
half-conv.ll
half.ll
huge-array.ll
ifunc-asm.ll [IFUNC] Fix ifunc-asm.ll test 2016-04-08 06:45:19 +00:00
ifunc-use-list-order.ll [GCC] Attribute ifunc support in llvm 2016-04-07 12:32:19 +00:00
inalloca.ll
incorrect-tdep-attrs-parsing.ll [IR] Have AttrBuilder::clear clear TargetDepAttrs. 2015-09-03 22:27:42 +00:00
inline-asm-clobber.ll
insertextractvalue.ll
insertvalue-invalid-idx.ll
insertvalue-invalid-type-1.ll
insertvalue-invalid-type.ll
internal-hidden-alias.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
internal-hidden-function.ll
internal-hidden-variable.ll
internal-protected-alias.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
internal-protected-function.ll
internal-protected-variable.ll
invalid_cast2.ll
invalid_cast3.ll
invalid_cast4.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
invalid_cast.ll
invalid-alias-mismatched-explicit-type.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-attrgrp.ll
invalid-comdat2.ll
invalid-comdat.ll
invalid-datalayout1.ll
invalid-datalayout2.ll
invalid-datalayout3.ll
invalid-datalayout4.ll
invalid-datalayout5.ll
invalid-datalayout6.ll
invalid-datalayout7.ll
invalid-datalayout8.ll
invalid-datalayout9.ll
invalid-datalayout10.ll
invalid-datalayout11.ll
invalid-datalayout12.ll
invalid-datalayout13.ll
invalid-datalayout14.ll
invalid-datalayout15.ll
invalid-datalayout16.ll
invalid-datalayout17.ll
invalid-datalayout18.ll
invalid-datalayout19.ll
invalid-datalayout20.ll
invalid-datalayout21.ll
invalid-datalayout22.ll
invalid-datalayout23.ll
invalid-datalayout24.ll
invalid-debug-info-version.ll
invalid-dicompileunit-emissionkind-bad.ll Move the DebugEmissionKind enum from DIBuilder into DICompileUnit. 2016-03-31 23:56:58 +00:00
invalid-dicompileunit-language-bad.ll
invalid-dicompileunit-language-overflow.ll
invalid-dicompileunit-missing-language.ll
invalid-dicompileunit-null-file.ll
invalid-dicompileunit-uniqued.ll
invalid-dicompositetype-missing-tag.ll
invalid-diderivedtype-missing-basetype.ll
invalid-diderivedtype-missing-tag.ll
invalid-dienumerator-missing-name.ll
invalid-dienumerator-missing-value.ll
invalid-diexpression-large.ll
invalid-diexpression-verify.ll
invalid-difile-missing-directory.ll
invalid-difile-missing-filename.ll
invalid-diglobalvariable-empty-name.ll
invalid-diglobalvariable-missing-name.ll
invalid-diimportedentity-missing-scope.ll
invalid-diimportedentity-missing-tag.ll
invalid-dilexicalblock-missing-scope.ll
invalid-dilexicalblock-null-scope.ll
invalid-dilexicalblockfile-missing-discriminator.ll
invalid-dilexicalblockfile-missing-scope.ll
invalid-dilexicalblockfile-null-scope.ll
invalid-dilocalvariable-arg-large.ll
invalid-dilocalvariable-arg-negative.ll
invalid-dilocalvariable-missing-scope.ll
invalid-dilocalvariable-null-scope.ll
invalid-dilocation-field-bad.ll
invalid-dilocation-field-twice.ll
invalid-dilocation-missing-scope-2.ll
invalid-dilocation-missing-scope.ll
invalid-dilocation-null-scope.ll
invalid-dilocation-overflow-column.ll
invalid-dilocation-overflow-line.ll
invalid-dinamespace-missing-namespace.ll
invalid-disubprogram-uniqued-definition.ll DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
invalid-disubrange-count-large.ll
invalid-disubrange-count-missing.ll
invalid-disubrange-count-negative.ll
invalid-disubrange-lowerBound-max.ll
invalid-disubrange-lowerBound-min.ll
invalid-disubroutinetype-missing-types.ll
invalid-ditemplatetypeparameter-missing-type.ll
invalid-ditemplatevalueparameter-missing-value.ll
invalid-fp80hex.ll Fix bug in method LLLexer::FP80HexToIntPair 2015-08-31 21:36:14 +00:00
invalid-fwdref1.ll
invalid-fwdref2.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-generic-debug-node-tag-bad.ll
invalid-generic-debug-node-tag-missing.ll
invalid-generic-debug-node-tag-overflow.ll
invalid-generic-debug-node-tag-wrong-type.ll
invalid-gep-mismatched-explicit-type.ll
invalid-gep-missing-explicit-type.ll
invalid-hexint.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
invalid-inline-constraint.ll Remove binary characters from test file. 2015-09-03 15:41:38 +00:00
invalid-inttype.ll Fix IntegerType::MAX_INT_BITS value 2016-10-04 12:43:46 +00:00
invalid-label.ll
invalid-landingpad.ll
invalid-load-mismatched-explicit-type.ll
invalid-load-missing-explicit-type.ll
invalid-mdnode-badref.ll AsmParser: Don't crash on unresolved !tbaa 2016-04-06 02:06:40 +00:00
invalid-mdnode-vector2.ll
invalid-mdnode-vector.ll
invalid-metadata-attachment-has-type.ll
invalid-metadata-function-local-attachments.ll
invalid-metadata-function-local-complex-1.ll
invalid-metadata-function-local-complex-2.ll
invalid-metadata-function-local-complex-3.ll
invalid-metadata-has-type.ll
invalid-name2.ll
invalid-name.ll
invalid-safestack-param.ll
invalid-safestack-return.ll
invalid-specialized-mdnode.ll
invalid-untyped-metadata.ll Fix assertion failure in LLParser::ConvertValIDToValue 2015-09-03 16:18:32 +00:00
invalid-uselistorder_bb-missing-bb.ll
invalid-uselistorder_bb-missing-body.ll
invalid-uselistorder_bb-missing-func.ll
invalid-uselistorder_bb-not-bb.ll
invalid-uselistorder_bb-not-func.ll
invalid-uselistorder_bb-numbered.ll
invalid-uselistorder-function-between-blocks.ll
invalid-uselistorder-function-missing-named.ll
invalid-uselistorder-function-missing-numbered.ll
invalid-uselistorder-global-missing.ll
invalid-uselistorder-indexes-duplicated.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-uselistorder-indexes-empty.ll
invalid-uselistorder-indexes-one.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-uselistorder-indexes-ordered.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-uselistorder-indexes-range.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-uselistorder-indexes-toofew.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-uselistorder-indexes-toomany.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
invalid-uselistorder-type.ll
large-comdat.ll
local-unnamed-addr.ll IR: Introduce local_unnamed_addr attribute. 2016-06-14 21:01:22 +00:00
max-inttype.ll Fix IntegerType::MAX_INT_BITS value 2016-10-04 12:43:46 +00:00
metadata-decl.ll IR: Allow metadata attachments on declarations, and fix lazy loaded metadata issue with globals. 2016-06-21 23:42:48 +00:00
metadata-function-local.ll
metadata-null-operands.ll
metadata.ll IR: Allow metadata attachments on declarations, and fix lazy loaded metadata issue with globals. 2016-06-21 23:42:48 +00:00
missing-tbaa.ll AsmParser: Don't crash on unresolved !tbaa 2016-04-06 02:06:40 +00:00
MultipleReturnValueType.ll
musttail-invalid-1.ll
musttail-invalid-2.ll
musttail.ll
named-metadata.ll
no-mdstring-upgrades.ll IR: Stop upgrading !llvm.loop attachments via MDString 2016-03-25 00:56:13 +00:00
numbered-values.ll
private-hidden-alias.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
private-hidden-function.ll
private-hidden-variable.ll
private-protected-alias.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
private-protected-function.ll
private-protected-variable.ll
select.ll
short-hexpair.ll
source-filename-backslash.ll Use existing PrintEscapedString in AssemblyWriter 2016-03-30 22:17:28 +00:00
source-filename.ll Restore "[ThinLTO] Serialize the Module SourceFileName to/from LLVM assembly" 2016-03-30 18:15:08 +00:00
tls-models.ll
token.ll [IR] Add support for empty tokens 2015-11-11 21:57:16 +00:00
unnamed-addr.ll
unnamed-alias.ll AsmParser: Make the code for parsing unnamed aliases more closely resemble that for unnamed globals. 2015-11-25 02:54:07 +00:00
unnamed-comdat.ll
unnamed.ll
unsized-recursive-type.ll
uselistorder_bb.ll
uselistorder.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
vbool-cmp.ll
vector-cmp.ll Make "@name =" mandatory for globals in .ll files. 2016-05-10 18:22:45 +00:00
vector-select.ll
vector-shift.ll
x86mmx.ll