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llvm-3.1-runtime - Low-Level Virtual Machine (LLVM), bytecode interpreter…  more info»


LLI(1)                   LLVM Command Guide                   LLI(1)

       lli - directly execute programs from LLVM bitcode

       lli [options] [filename] [program args]

       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, 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.

           Override the "argv[0]" value passed into the executing

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

           Print a summary of command line options.

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

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

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

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

       -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.

           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

           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

           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

           Disable optimizations that may increase floating point

           Enable optimizations that assume no Inf values.

           Enable optimizations that assume no NAN values.

           Causes lli to enable optimizations that may decrease
           floating point precision.

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

           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 scheduling after register allocation.

           Disable fusing of spill code into instructions.

           Make the -lowerinvoke pass insert expensive, but correct,
           EH code.

           Exception handling should be enabled in the just-in-time

           Coalesce copies (default=true).

       -nozero-initialized-in-bss Don't place zero-initialized
       symbols into the BSS section.
           Instruction schedulers available (before register

               =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

           Register allocator to use (default=linearscan)

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

           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 to use (default=local)

               =simple: simple spiller
               =local: local spiller

           Choose style of code to emit from X86 backend:

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

       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.


       Maintained by the LLVM Team (<>).

CVS                          2011-04-09                       LLI(1)
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