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DI: Prune another example 

llvm-svn: 219053
This commit is contained in:
Duncan P. N. Exon Smith 2014-10-04 15:30:52 +00:00
parent 64567a80d2
commit 8e9f2813cf
1 changed files with 0 additions and 62 deletions
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62
llvm/docs/SourceLevelDebugging.rst
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@ -858,68 +858,6 @@ in ``lib/IR/DIBuilder.cpp``.
C/C++ source file information C/C++ source file information
----------------------------- -----------------------------
Given the source files ``MySource.cpp`` and ``MyHeader.h`` located in the
directory ``/Users/mine/sources``, the following code:
.. code-block:: c
#include "MyHeader.h"
int main(int argc, char *argv[]) {
return 0;
}
a C/C++ front-end would generate the following descriptors:
.. code-block:: llvm
...
;;
;; Define the compile unit for the main source file "/Users/mine/sources/MySource.cpp".
;;
!0 = metadata !{
i32 786449, ;; Tag
metadata !1, ;; File/directory name
i32 4, ;; Language Id
metadata !"clang version 3.4 ",
i1 false, ;; Optimized compile unit
metadata !"", ;; Compiler flags
i32 0, ;; Runtime version
metadata !2, ;; Enumeration types
metadata !2, ;; Retained types
metadata !3, ;; Subprograms
metadata !2, ;; Global variables
metadata !2, ;; Imported entities (declarations and namespaces)
metadata !"" ;; Split debug filename
1, ;; Full debug info
}
;;
;; Define the file for the file "/Users/mine/sources/MySource.cpp".
;;
!1 = metadata !{
metadata !"MySource.cpp",
metadata !"/Users/mine/sources"
}
!5 = metadata !{
i32 786473, ;; Tag
metadata !1
}
;;
;; Define the file for the file "/Users/mine/sources/Myheader.h"
;;
!14 = metadata !{
i32 786473, ;; Tag
metadata !15
}
!15 = metadata !{
metadata !"./MyHeader.h",
metadata !"/Users/mine/sources",
}
...
``llvm::Instruction`` provides easy access to metadata attached with an ``llvm::Instruction`` provides easy access to metadata attached with an
instruction. One can extract line number information encoded in LLVM IR using instruction. One can extract line number information encoded in LLVM IR using
``Instruction::getMetadata()`` and ``DILocation::getLineNumber()``. ``Instruction::getMetadata()`` and ``DILocation::getLineNumber()``.