NAME

       lli - directly execute programs from LLVM bitcode

SYNOPSIS

       lli [options] [filename] [program args]

DESCRIPTION

       lli directly executes programs in LLVM bitcode format.  It takes a program in LLVM bitcode
       format and executes it using a just-in-time compiler, if one is available for the  current
       architecture,  or  an  interpreter.   lli  takes all of the same code generator options as
       llc|llc, but they are only effective when lli is using the just-in-time compiler.

       If filename is not specified, then lli  reads  the  LLVM  bitcode  for  the  program  from
       standard input.

       The optional args specified on the command line are passed to the program as arguments.

GENERAL OPTIONS

       -fake-argv0=executable
          Override the argv[0] value passed into the executing program.

       -force-interpreter={false,true}
          If  set  to  true, use the interpreter even if a just-in-time compiler is available for
          this architecture. Defaults to false.

       -help
          Print a summary of command line options.

       -load=pluginfilename
          Causes lli to load the plugin (shared object)  named  pluginfilename  and  use  it  for
          optimization.

       -stats
          Print  statistics  from  the  code-generation  passes.  This is only meaningful for the
          just-in-time compiler, at present.

       -time-passes
          Record the amount of time needed for each code-generation pass and print it to standard
          error.

       -version
          Print out the version of lli and exit without doing anything else.

TARGET OPTIONS

       -mtriple=target triple
          Override  the  target  triple  specified  in  the input bitcode file with the specified
          string.  This may result in a crash if you pick an architecture which is not compatible
          with the current system.

       -march=arch
          Specify  the architecture for which to generate assembly, overriding the target encoded
          in the bitcode file.  See the output of llc -help for a list  of  valid  architectures.
          By  default  this  is  inferred  from  the target triple or autodetected to the current
          architecture.

       -mcpu=cpuname
          Specify a specific chip in the current architecture to generate code for.   By  default
          this  is  inferred from the target triple and autodetected to the current architecture.
          For a list of available CPUs, use: llvm-as < /dev/null | llc -march=xyz -mcpu=help

       -mattr=a1,+a2,-a3,...
          Override or control specific attributes of the target, such as whether SIMD  operations
          are  enabled  or  not.  The default set of attributes is set by the current CPU.  For a
          list of available attributes, use: llvm-as < /dev/null | llc -march=xyz -mattr=help

FLOATING POINT OPTIONS

       -disable-excess-fp-precision
          Disable optimizations that may increase floating point precision.

       -enable-no-infs-fp-math
          Enable optimizations that assume no Inf values.

       -enable-no-nans-fp-math
          Enable optimizations that assume no NAN values.

       -enable-unsafe-fp-math
          Causes lli to enable optimizations that may decrease floating point precision.

       -soft-float
          Causes lli to generate software floating point  library  calls  instead  of  equivalent
          hardware instructions.

CODE GENERATION OPTIONS

       -code-model=model
          Choose the code model from:

              default: Target default code model
              small: Small code model
              kernel: Kernel code model
              medium: Medium code model
              large: Large code model

       -disable-post-RA-scheduler
          Disable scheduling after register allocation.

       -disable-spill-fusing
          Disable fusing of spill code into instructions.

       -jit-enable-eh
          Exception handling should be enabled in the just-in-time compiler.

       -join-liveintervals
          Coalesce copies (default=true).

       -nozero-initialized-in-bss Don't place zero-initialized symbols into the BSS section.

       -pre-RA-sched=scheduler
          Instruction schedulers available (before register allocation):

              =default: Best scheduler for the target
              =none: No scheduling: breadth first sequencing
              =simple: Simple two pass scheduling: minimize critical path and maximize processor utilization
              =simple-noitin: Simple two pass scheduling: Same as simple except using generic latency
              =list-burr: Bottom-up register reduction list scheduling
              =list-tdrr: Top-down register reduction list scheduling
              =list-td: Top-down list scheduler -print-machineinstrs - Print generated machine code

       -regalloc=allocator
          Register allocator to use (default=linearscan)

              =bigblock: Big-block register allocator
              =linearscan: linear scan register allocator =local -   local register allocator
              =simple: simple register allocator

       -relocation-model=model
          Choose relocation model from:

              =default: Target default relocation model
              =static: Non-relocatable code =pic -   Fully relocatable, position independent code
              =dynamic-no-pic: Relocatable external references, non-relocatable code

       -spiller
          Spiller to use (default=local)

              =simple: simple spiller
              =local: local spiller

       -x86-asm-syntax=syntax
          Choose style of code to emit from X86 backend:

              =att: Emit AT&T-style assembly
              =intel: Emit Intel-style assembly

EXIT STATUS

       If lli fails to load the program, it will exit with an exit code of 1.  Otherwise, it will
       return the exit code of the program it executes.

SEE ALSO

       llc|llc

AUTHOR

       Maintained by The LLVM Team (http://llvm.org/).

COPYRIGHT

       2003-2014, LLVM Project