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| -rw-r--r-- | llvm/docs/LangRef.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst index e8bbcc535f6..2cb71bb78ce 100644 --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -2196,6 +2196,26 @@ function's scope. uselistorder i32 (i32) @bar, { 1, 0 } uselistorder_bb @foo, %bb, { 5, 1, 3, 2, 0, 4 } +.. _source_filename: + +Source Filename +--------------- + +The *source filename* string is set to the original module identifier, +which will be the name of the compiled source file when compiling from +source through the clang front end, for example. It is then preserved through +the IR and bitcode. + +This is currently necessary to generate a consistent unique global +identifier for local functions used in profile data, which prepends the +source file name to the local function name. + +The syntax for the source file name is simply: + +.. code-block:: llvm + + source_filename = "/path/to/source.c" + .. _typesystem: Type System |
