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* Migrate function attribute "no-frame-pointer-elim"="false" to ↵Fangrui Song2019-12-241-1/+1
| | | | "frame-pointer"="none" as cleanups after D56351
* Removing block comments from CodeView records in assembly files & related ↵Nilanjana Basu2019-08-251-20/+17
| | | | | | code cleanup llvm-svn: 369860
* [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.Shiva Chen2018-05-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Prantl2017-08-301-1/+1
| | | | | | | | | | | | | | | | 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
* IR: Replace the "Linker Options" module flag with "llvm.linker.options" ↵Peter Collingbourne2017-06-121-5/+1
| | | | | | | | | | named metadata. The new metadata is easier to manipulate than module flags. Differential Revision: https://reviews.llvm.org/D31349 llvm-svn: 305227
* [codeview] Don't assert when the user violates the ODRReid Kleckner2017-03-241-0/+100
If we have an array of a user-defined aggregates for which there was an ODR violation, then the array size will not necessarily match the number of elements times the size of the element. Fixes PR32383 llvm-svn: 298750
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