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[llvm-exegesis] Fix doc in r342947.

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llvm-exegesis.rst was using invalid indentation for bullet points.

llvm-svn: 342948
This commit is contained in:
Clement Courbet 2018-09-25 07:48:38 +00:00
parent 78b2e73d15
commit 86ecf46fb4
1 changed files with 9 additions and 8 deletions
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17
llvm/docs/CommandGuide/llvm-exegesis.rst
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@ -93,14 +93,15 @@ Real-life code snippets typically depend on registers or memory.
:program:`llvm-exegesis` checks the liveliness of registers (i.e. any register
use has a corresponding def or is a "live in"). If your code depends on the
value of some registers, you have two options:
- Mark the register as requiring a definition. :program:`llvm-exegesis` will
automatically assign a value to the register. This can be done using the
directive `LLVM-EXEGESIS-DEFREG <reg name> <hex_value>`, where `<hex_value>`
is a bit pattern used to fill `<reg_name>`. If `<hex_value>` is smaller than
the register width, it will be sign-extended.
- Mark the register as a "live in". :program:`llvm-exegesis` will benchmark
using whatever value was in this registers on entry. This can be done using
the directive `LLVM-EXEGESIS-LIVEIN <reg name>`.
- Mark the register as requiring a definition. :program:`llvm-exegesis` will
automatically assign a value to the register. This can be done using the
directive `LLVM-EXEGESIS-DEFREG <reg name> <hex_value>`, where `<hex_value>`
is a bit pattern used to fill `<reg_name>`. If `<hex_value>` is smaller than
the register width, it will be sign-extended.
- Mark the register as a "live in". :program:`llvm-exegesis` will benchmark
using whatever value was in this registers on entry. This can be done using
the directive `LLVM-EXEGESIS-LIVEIN <reg name>`.
For example, the following code snippet depends on the values of XMM1 (which
will be set by the tool) and the memory buffer passed in RDI (live in).