forked from OSchip/llvm-project
bceaaa9643
This patch implements PR31013 by introducing a
DIGlobalVariableExpression that holds a pair of DIGlobalVariable and
DIExpression.
Currently, DIGlobalVariables holds a DIExpression. This is not the
best way to model this:
(1) The DIGlobalVariable should describe the source level variable,
not how to get to its location.
(2) It makes it unsafe/hard to update the expressions when we call
replaceExpression on the DIGLobalVariable.
(3) It makes it impossible to represent a global variable that is in
more than one location (e.g., a variable with multiple
DW_OP_LLVM_fragment-s). We also moved away from attaching the
DIExpression to DILocalVariable for the same reasons.
This reapplies r289902 with additional testcase upgrades and a change
to the Bitcode record for DIGlobalVariable, that makes upgrading the
old format unambiguous also for variables without DIExpressions.
<rdar://problem/29250149>
https://llvm.org/bugs/show_bug.cgi?id=31013
Differential Revision: https://reviews.llvm.org/D26769
llvm-svn: 290153
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| .. | ||
| 2009-10-16-Phi.ll | ||
| 2009-11-03-InsertExtractValue.ll | ||
| 2009-11-05-DeadGlobalVariable.ll | ||
| 2009-11-06-NamelessGlobalVariable.ll | ||
| 2009-11-10-CurrentFn.ll | ||
| 2010-01-05-DbgScope.ll | ||
| 2010-03-12-llc-crash.ll | ||
| 2010-03-19-DbgDeclare.ll | ||
| 2010-03-24-MemberFn.ll | ||
| 2010-04-06-NestedFnDbgInfo.ll | ||
| 2010-04-19-FramePtr.ll | ||
| 2010-05-03-DisableFramePtr.ll | ||
| 2010-05-03-OriginDIE.ll | ||
| 2010-05-10-MultipleCU.ll | ||
| 2010-06-29-InlinedFnLocalVar.ll | ||
| 2010-10-01-crash.ll | ||
| PR20038.ll | ||
| accel-table-hash-collisions.ll | ||
| array.ll | ||
| block-asan.ll | ||
| bug_null_debuginfo.ll | ||
| constant-pointers.ll | ||
| constant-sdnodes-have-dbg-location.ll | ||
| constantfp-sdnodes-have-dbg-location.ll | ||
| cross-cu-inlining.ll | ||
| cross-cu-linkonce-distinct.ll | ||
| cross-cu-linkonce.ll | ||
| cu-range-hole.ll | ||
| cu-ranges.ll | ||
| dbg-at-specficiation.ll | ||
| dead-argument-order.ll | ||
| debug-info-always-inline.ll | ||
| debug-info-qualifiers.ll | ||
| debuginfofinder-forward-declaration.ll | ||
| debuginfofinder-multiple-cu.ll | ||
| def-line.ll | ||
| discriminator.ll | ||
| dwarf-public-names.ll | ||
| empty.ll | ||
| enum-types.ll | ||
| enum.ll | ||
| global.ll | ||
| gmlt.test | ||
| gvn.ll | ||
| incorrect-variable-debugloc.ll | ||
| incorrect-variable-debugloc1.ll | ||
| indvar-discriminator.ll | ||
| inheritance.ll | ||
| inline-debug-info-multiret.ll | ||
| inline-debug-info.ll | ||
| inline-debug-loc.ll | ||
| inline-no-debug-info.ll | ||
| inline-scopes.ll | ||
| inlined-arguments.ll | ||
| inlined-vars.ll | ||
| instcombine-phi.ll | ||
| linkage-name-abstract.ll | ||
| lit.local.cfg | ||
| location-verifier.ll | ||
| lto-comp-dir.ll | ||
| mainsubprogram.ll | ||
| member-order.ll | ||
| member-pointers.ll | ||
| missing-abstract-variable.ll | ||
| multiline.ll | ||
| namespace.ll | ||
| namespace_function_definition.ll | ||
| namespace_inline_function_definition.ll | ||
| nodebug.ll | ||
| noscopes.ll | ||
| piece-verifier.ll | ||
| ptrsize.ll | ||
| recursive_inlining.ll | ||
| restrict.ll | ||
| skeletoncu.ll | ||
| sugared-constants.ll | ||
| sunk-compare.ll | ||
| template-recursive-void.ll | ||
| tu-composite.ll | ||
| tu-member-pointer.ll | ||
| two-cus-from-same-file.ll | ||
| typedef.ll | ||
| unconditional-branch.ll | ||
| varargs.ll | ||
| version.ll | ||
| virtual-index.ll | ||