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* Migrate function attribute "no-frame-pointer-elim"="false" to ↵Fangrui Song2019-12-241-2/+2
| | | | "frame-pointer"="none" as cleanups after D56351
* Changing CodeView debug info type record representation in assembly files to ↵Nilanjana Basu2019-07-091-0/+1
| | | | | | make it more human-readable & editable & fixing bug introduced in r364987 llvm-svn: 365417
* Revert Changing CodeView debug info type record representation in assembly ↵Nilanjana Basu2019-07-031-1/+0
| | | | | | | | files to make it more human-readable & editable This reverts r364982 (git commit 2082bf28ebea76cc187b508f801122866420d9ff) llvm-svn: 364987
* Changing CodeView debug info type record representation in assembly files to ↵Nilanjana Basu2019-07-031-0/+1
| | | | | | make it more human-readable & editable llvm-svn: 364982
* [llvm-readobj] Change -long-option to --long-option in tests. NFCFangrui Song2019-05-011-1/+1
| | | | | | | | | | We use both -long-option and --long-option in tests. Switch to --long-option for consistency. In the "llvm-readelf" mode, -long-option is discouraged as it conflicts with grouped short options and it is not accepted by GNU readelf. While updating the tests, change llvm-readobj -s to llvm-readobj -S to reduce confusion ("s" is --section-headers in llvm-readobj but --symbols in llvm-readelf). llvm-svn: 359649
* [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.Shiva Chen2018-05-091-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
* Canonicalize the representation of empty an expression in ↵Adrian Prantl2017-08-301-2/+2
| | | | | | | | | | | | | | | | DIGlobalVariableExpression This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
* Renumber testcase metadata nodes after r290153.Adrian Prantl2016-12-221-61/+65
| | | | | | | | | | | | | This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
* [IR] Remove the DIExpression field from DIGlobalVariable.Adrian Prantl2016-12-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Revert "[IR] Remove the DIExpression field from DIGlobalVariable."Adrian Prantl2016-12-161-2/+2
| | | | | | | | | | | | | | | | | This reverts commit 289920 (again). I forgot to implement a Bitcode upgrade for the case where a DIGlobalVariable has not DIExpression. Unfortunately it is not possible to safely upgrade these variables without adding a flag to the bitcode record indicating which version they are. My plan of record is to roll the planned follow-up patch that adds a unit: field to DIGlobalVariable into this patch before recomitting. This way we only need one Bitcode upgrade for both changes (with a version flag in the bitcode record to safely distinguish the record formats). Sorry for the churn! llvm-svn: 289982
* [IR] Remove the DIExpression field from DIGlobalVariable.Adrian Prantl2016-12-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. <rdar://problem/29250149> https://llvm.org/bugs/show_bug.cgi?id=31013 Differential Revision: https://reviews.llvm.org/D26769 llvm-svn: 289920
* Revert "[IR] Remove the DIExpression field from DIGlobalVariable."Adrian Prantl2016-12-161-2/+2
| | | | | | This reverts commit 289902 while investigating bot berakage. llvm-svn: 289906
* [IR] Remove the DIExpression field from DIGlobalVariable.Adrian Prantl2016-12-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | 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. <rdar://problem/29250149> https://llvm.org/bugs/show_bug.cgi?id=31013 Differential Revision: https://reviews.llvm.org/D26769 llvm-svn: 289902
* DebugInfo: New metadata representation for global variables.Peter Collingbourne2016-09-131-4/+4
| | | | | | | | | | | | | This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
* [codeview] Don't assert if the array element type is incompleteReid Kleckner2016-09-091-0/+140
This can happen when the frontend knows the debug info will be emitted somewhere else. Usually this happens for dynamic classes with out of line constructors or key functions, but it can also happen when modules are enabled. llvm-svn: 281060
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