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| author | Wolfgang Pieb <Wolfgang.Pieb@sony.com> | 2016-06-27 23:59:00 +0000 |
|---|---|---|
| committer | Wolfgang Pieb <Wolfgang.Pieb@sony.com> | 2016-06-27 23:59:00 +0000 |
| commit | 0b4509e9e67834ddf6dba062343a8a0e5ea1c11c (patch) | |
| tree | fdd6165787622c53491993d2a576982363a06fc4 | |
| parent | dca834089a88ab6c8aef2cdb496e1260906e7462 (diff) | |
| download | bcm5719-llvm-0b4509e9e67834ddf6dba062343a8a0e5ea1c11c.tar.gz bcm5719-llvm-0b4509e9e67834ddf6dba062343a8a0e5ea1c11c.zip | |
Document the ability to perform multi-line pattern matching in FileCheck.
Differential review: http://reviews.llvm.org/D21522
llvm-svn: 273962
| -rw-r--r-- | llvm/docs/CommandGuide/FileCheck.rst | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/docs/CommandGuide/FileCheck.rst b/llvm/docs/CommandGuide/FileCheck.rst index 3e4c29f1572..a0ca1bfe52f 100644 --- a/llvm/docs/CommandGuide/FileCheck.rst +++ b/llvm/docs/CommandGuide/FileCheck.rst @@ -461,3 +461,22 @@ relative line number references, for example: // CHECK-NEXT: {{^ ;}} int a +Matching Newline Characters +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +To match newline characters in regular expressions the character class +``[[:space:]]`` can be used. For example, the following pattern: + +.. code-block:: c++ + + // CHECK: DW_AT_location [DW_FORM_sec_offset] ([[DLOC:0x[0-9a-f]+]]){{[[:space:]].*}}"intd" + +matches output of the form (from llvm-dwarfdump): + +.. code-block:: llvm + + DW_AT_location [DW_FORM_sec_offset] (0x00000233) + DW_AT_name [DW_FORM_strp] ( .debug_str[0x000000c9] = "intd") + +letting us set the :program:`FileCheck` variable ``DLOC`` to the desired value +``0x00000233``, extracted from the line immediately preceding "``intd``". |
