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| author | Thomas Preud'homme <thomasp@graphcore.ai> | 2020-06-11 16:14:24 +0100 |
|---|---|---|
| committer | Thomas Preud'homme <thomasp@graphcore.ai> | 2021-03-12 18:14:17 +0000 |
| commit | f9e2a62cc594c96194908a3ac4804caa07f86ba6 (patch) | |
| tree | 4b8cc4ded5871af4f417cd94e3f74d620dbb9cdc /llvm/docs/CommandGuide/FileCheck.rst | |
| parent | 4affd0c40eccbce921f185e1e09f84f8194cd4cf (diff) | |
| download | llvm-f9e2a62cc594c96194908a3ac4804caa07f86ba6.zip llvm-f9e2a62cc594c96194908a3ac4804caa07f86ba6.tar.gz llvm-f9e2a62cc594c96194908a3ac4804caa07f86ba6.tar.bz2 | |
[FileCheck] Add support for hex alternate form in FileCheck
Add printf-style alternate form flag to prefix hex number with 0x when
present. This works on both empty numeric expression (e.g. variable
definition from input) and when matching a numeric expression. The
syntax is as follows:
[[#%#<precision specifier><format specifier>, ...]
where <precision specifier> and <format specifier> are optional and ...
can be a variable definition or not with an empty expression or not.
This feature was requested in https://reviews.llvm.org/D81144#2075532
for llvm/test/MC/ELF/gen-dwarf64.s
Reviewed By: jdenny
Differential Revision: https://reviews.llvm.org/D97845
Diffstat (limited to 'llvm/docs/CommandGuide/FileCheck.rst')
| -rw-r--r-- | llvm/docs/CommandGuide/FileCheck.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/docs/CommandGuide/FileCheck.rst b/llvm/docs/CommandGuide/FileCheck.rst index 398cce1..a4e3e06 100644 --- a/llvm/docs/CommandGuide/FileCheck.rst +++ b/llvm/docs/CommandGuide/FileCheck.rst @@ -773,8 +773,11 @@ The syntax to capture a numeric value is * ``<NUMVAR>:`` is an optional definition of variable ``<NUMVAR>`` from the captured value. -The syntax of ``<fmtspec>`` is: ``.<precision><conversion specifier>`` where: +The syntax of ``<fmtspec>`` is: ``#.<precision><conversion specifier>`` where: +* ``#`` is an optional flag available for hex values (see + ``<conversion specifier>`` below) which requires the value matched to be + prefixed by ``0x``. * ``.<precision>`` is an optional printf-style precision specifier in which ``<precision>`` indicates the minimum number of digits that the value matched must have, expecting leading zeros if needed. |