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[docs] Remove incorrect information about lit.

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Lit does support redirects in the 2>&1 style.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177403 91177308-0d34-0410-b5e6-96231b3b80d8
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Sean Silva 2013-03-19 15:22:02 +00:00
parent e9e10d18df
commit 037a4bcde3
1 changed files with 1 additions and 10 deletions
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docs/TestingGuide.rst
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@ -224,16 +224,7 @@ Below is an example of legal RUN lines in a ``.ll`` file:
; RUN: diff %t1 %t2 ; RUN: diff %t1 %t2
As with a Unix shell, the RUN lines permit pipelines and I/O As with a Unix shell, the RUN lines permit pipelines and I/O
redirection to be used. However, the usage is slightly different than redirection to be used.
for Bash. In general, it's useful to read the code of other tests to figure out
what you can use in yours. The major differences are:
- You can't do ``2>&1``. That will cause :program:`lit` to write to a file
named ``&1``. Usually this is done to get stderr to go through a pipe. You
can do that with ``|&`` so replace this idiom:
``... 2>&1 | FileCheck`` with ``... |& FileCheck``
- You can only redirect to a file, not to another descriptor and not
from a here document.
There are some quoting rules that you must pay attention to when writing There are some quoting rules that you must pay attention to when writing
your RUN lines. In general nothing needs to be quoted. :program:`lit` won't your RUN lines. In general nothing needs to be quoted. :program:`lit` won't