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Diffstat (limited to 'docs/CommandGuide/llc.rst')
| -rw-r--r-- | docs/CommandGuide/llc.rst | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/docs/CommandGuide/llc.rst b/docs/CommandGuide/llc.rst index 70354b0..02ad798 100644 --- a/docs/CommandGuide/llc.rst +++ b/docs/CommandGuide/llc.rst @@ -69,6 +69,14 @@ End-user Options llvm-as < /dev/null | llc -march=xyz -mcpu=help +.. option:: -filetype=<output file type> + + Specify what kind of output ``llc`` should generated. Options are: ``asm`` + for textual assembly ( ``'.s'``), ``obj`` for native object files (``'.o'``) + and ``null`` for not emitting anything (for performance testing). + + Note that not all targets support all options. + .. option:: -mattr=a1,+a2,-a3,... Override or control specific attributes of the target, such as whether SIMD @@ -133,24 +141,24 @@ Tuning/Configuration Options .. option:: --regalloc=<allocator> - Specify the register allocator to use. The default ``allocator`` is *local*. + Specify the register allocator to use. Valid register allocators are: - *simple* + *basic* - Very simple "always spill" register allocator + Basic register allocator. - *local* + *fast* - Local register allocator + Fast register allocator. It is the default for unoptimized code. - *linearscan* + *greedy* - Linear scan global register allocator + Greedy register allocator. It is the default for optimized code. - *iterativescan* + *pbqp* - Iterative scan global register allocator + Register allocator based on 'Partitioned Boolean Quadratic Programming'. .. option:: --spiller=<spiller> |