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cf7e846d11
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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| .. | ||
| Inputs | ||
| alias_import.ll | ||
| alias_resolution.ll | ||
| autoupgrade.ll | ||
| cache-config.ll | ||
| cache.ll | ||
| crash_debuginfo.ll | ||
| debuginfo-compositetype-import.ll | ||
| debuginfo-cu-import.ll | ||
| diagnostic-handler-remarks-with-hotness.ll | ||
| diagnostic-handler-remarks.ll | ||
| dicompositetype-unique.ll | ||
| distributed_import.ll | ||
| distributed_indexes.ll | ||
| drop-debug-info.ll | ||
| emit_imports.ll | ||
| empty_module_with_cache.ll | ||
| export.ll | ||
| funcimport2.ll | ||
| funcimport.ll | ||
| import_opaque_type.ll | ||
| internalize.ll | ||
| linkonce_aliasee_ref_import.ll | ||
| linkonce_resolution_comdat.ll | ||
| lit.local.cfg | ||
| llvm.used.ll | ||
| module_asm2.ll | ||
| module_asm_glob.ll | ||
| prefix_replace.ll | ||
| reference_non_importable.ll | ||
| referenced_by_constant.ll | ||
| save_objects.ll | ||
| section.ll | ||
| select_right_alias_definition.ll | ||
| weak_resolution_single.ll | ||
| weak_resolution.ll | ||