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[Coverage] Fix more bugs in covmap V1 documentation

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llvm-svn: 258906
This commit is contained in:
Xinliang David Li 2016-01-27 03:13:09 +00:00
parent be8a721ed2
commit 481a5b6efe
1 changed files with 11 additions and 8 deletions
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19
docs/CoverageMappingFormat.rst
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@ -251,7 +251,7 @@ The coverage mapping variable generated by Clang has 3 fields:
.. code-block:: llvm
@__llvm_coverage_mapping = internal constant { { i32, i32, i32, i32 }, [2 x { i8*, i32, i32 }], [40 x i8] }
@__llvm_coverage_mapping = internal constant { { i32, i32, i32, i32 }, [2 x { i8*, i32, i32, i64 }], [40 x i8] }
{
{ i32, i32, i32, i32 } ; Coverage map header
{
@ -260,14 +260,16 @@ The coverage mapping variable generated by Clang has 3 fields:
i32 20, ; The length of the string that contains the encoded coverage mapping data
i32 0, ; Coverage mapping format version
},
[2 x { i8*, i32, i32 }] [ ; Function records
{ i8*, i32, i32 } { i8* getelementptr inbounds ([3 x i8]* @__llvm_profile_name_foo, i32 0, i32 0), ; Function's name
[2 x { i8*, i32, i32, i64 }] [ ; Function records
{ i8*, i32, i32, i64 } { i8* getelementptr inbounds ([3 x i8]* @__profn_foo, i32 0, i32 0), ; Function's name
i32 3, ; Function's name length
i32 9 ; Function's encoded coverage mapping data string length
i32 9, ; Function's encoded coverage mapping data string length
i64 0 ; Function's structural hash
},
{ i8*, i32, i32 } { i8* getelementptr inbounds ([3 x i8]* @__llvm_profile_name_bar, i32 0, i32 0), ; Function's name
{ i8*, i32, i32, i64 } { i8* getelementptr inbounds ([3 x i8]* @__profn_bar, i32 0, i32 0), ; Function's name
i32 3, ; Function's name length
i32 9 ; Function's encoded coverage mapping data string length
i32 9, ; Function's encoded coverage mapping data string length
i64 0 ; Function's structural hash
}],
[40 x i8] c"..." ; Encoded data (dissected later)
}, section "__llvm_covmap", align 8
@ -294,10 +296,11 @@ A function record is a structure of the following type:
.. code-block:: llvm
{ i8*, i32, i32 }
{ i8*, i32, i32, i64 }
It contains the pointer to the function's name, function's name length,
and the length of the encoded mapping data for that function.
the length of the encoded mapping data for that function, and function's
hash value.
Encoded data:
-------------