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| author | Simon Dardis <simon.dardis@imgtec.com> | 2016-05-27 15:13:31 +0000 |
|---|---|---|
| committer | Simon Dardis <simon.dardis@imgtec.com> | 2016-05-27 15:13:31 +0000 |
| commit | 536826934374f81983a1cb2bec3092bc1b9f7535 (patch) | |
| tree | 5e377e45afd9888ba64c6aa6b4737890755bf950 /docs | |
| parent | 3317d0fa0bd1f5c5adc14bcc6adc2a38acc9064b (diff) | |
[mips] Compact branch policy setting.
This patch adds the commandline option -mcompact-branches={never,optimal,always),
which controls how LLVM generates compact branches for MIPSR6 targets. By default,
the compact branch policy is 'optimal' where LLVM will generate the most
appropriate branch for any situation. The 'never' and 'always' policy will disable
or always generate compact branches wherever possible respectfully.
Reviewers: dsanders, vkalintiris, atanasyan
Differential Revision: http://reviews.llvm.org/D20729
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@271000 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/UsersManual.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/docs/UsersManual.rst b/docs/UsersManual.rst index b88a418d89..64ae4661d2 100644 --- a/docs/UsersManual.rst +++ b/docs/UsersManual.rst @@ -1140,6 +1140,16 @@ are listed below. This option restricts the generated code to use general registers only. This only applies to the AArch64 architecture. +.. option:: -mcompact-branches=[values] + + Control the usage of compact branches for MIPSR6. + + Valid values are: ``never``, ``optimal`` and ``always``. + The default value is ``optimal`` which generates compact branches + when a delay slot cannot be filled. ``never`` disables the usage of + compact branches and ``always`` generates compact branches whenever + possible. + **-f[no-]max-type-align=[number]** Instruct the code generator to not enforce a higher alignment than the given number (of bytes) when accessing memory via an opaque pointer or reference. |