llvm-mc-3.41

Manual page for llvm-mc 3.4

Overview

OVERVIEW: llvm machine code playground

USAGE: llvm-mc [options] <input file>

Options:

-I=<directory> - Directory of include files

-L - Don't discard temporary labels

-arch=<string> - Target arch to assemble for, see -version for available targets

-asm-verbose - Add comments to directives.

-bounds-checking-single-trap - Use one trap block per function

-code-model - Choose code model

`=default`	- Target default code model
`=small`	- Small code model
`=kernel`	- Kernel code model
`=medium`	- Medium code model
`=large`	- Large code model

-cppfname=<function name> - Specify the name of the generated function

-cppfor=<string> - Specify the name of the thing to generate

-cppgen - Choose what kind of output to generate

`=program`	- Generate a complete program
`=module`	- Generate a module definition
`=contents`	- Generate contents of a module
`=function`	- Generate a function definition
`=functions`	- Generate all function definitions
`=inline`	- Generate an inline function
`=variable`	- Generate a variable definition
`=type`	- Generate a type definition

-disable-cfi - Do not use .cfi_* directives

-disable-debug-info-verifier -

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

-enable-correct-eh-support - Make the -lowerinvoke pass insert expensive, but correct, EH code

-enable-load-pre -

-enable-objc-arc-opts - enable/disable all ARC Optimizations

-enable-tbaa -

-fatal-assembler-warnings - Consider warnings as error

-fdata-sections - Emit data into separate sections

-fdebug-compilation-dir=<string> - Specifies the debug info's compilation dir

-ffunction-sections - Emit functions into separate sections

-filetype - Choose an output file type:

`=asm`	- Emit an assembly ('.s') file
`=null`	- Don't emit anything (for timing purposes)
`=obj`	- Emit a native object ('.o') file

-g - Generate dwarf debugging info for assembly source files

-help - Display available options (-help-hidden for more)

-internalize-public-api-file=<filename> - A file containing list of symbol names to preserve

-internalize-public-api-list=<list> - A list of symbol names to preserve

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

-limit-float-precision=<uint> - Generate low-precision inline sequences for some float libcalls

-main-file-name=<string> - Specifies the name we should consider the input file

-mattr=<a1,+a2,-a3,...> - Target specific attributes (-mattr=help for details)

-mc-no-exec-stack - File doesn't need an exec stack

-mc-relax-all - Relax all fixups

-mc-x86-disable-arith-relaxation - Disable relaxation of arithmetic instruction for X86

-mcpu=<cpu-name> - Target a specific cpu type (-mcpu=help for details)

: Action to perform:

-as-lex - Lex tokens from a .s file

-assemble - Assemble a .s file (default)

-disassemble - Disassemble strings of hex bytes

-mdis - Marked up disassembly of strings of hex bytes

-hdis - Disassemble strings of hex bytes printing immediates as hex

-mips16-hard-float - MIPS: mips16 hard float enable.

-mno-ldc1-sdc1 - Expand double precision loads and stores to their single precision counterparts

-n - Don't assume assembly file starts in the text section

-nvptx-sched4reg - NVPTX Specific: schedule for register pressue

-o=<filename> - Output filename

-output-asm-variant=<uint> - Syntax variant to use for output printing

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

=vliw-td: - VLIW scheduler

=list-ilp: - Bottom-up register pressure aware list scheduling which tries to balance ILP and register pressure

=list-hybrid: - Bottom-up register pressure aware list scheduling which tries to balance latency and register pressure

=source: - Similar to list-burr but schedules in source order when possible

=list-burr: - Bottom-up register reduction list scheduling

=linearize: - Linearize DAG, no scheduling

=fast: - Fast suboptimal list scheduling

=default: - Best scheduler for the target

-print-after-all - Print IR after each pass

-print-before-all - Print IR before each pass

-print-machineinstrs=<pass-name> - Print machine instrs

-regalloc - Register allocator to use

`=default`	- pick register allocator based on `-O` option
`=basic`	- basic register allocator
`=fast`	- fast register allocator
`=greedy`	- greedy register allocator
`=pbqp`	- PBQP register allocator

-relocation-model - Choose relocation model

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

-show-encoding - Show instruction encodings

-show-inst - Show internal instruction representation

-show-inst-operands - Show instructions operands as parsed

-spiller - Spiller to use: (default: standard)

`=trivial`	- trivial spiller
`=inline`	- inline spiller

-stats - Enable statistics output from program (available with Asserts)

-time-passes - Time each pass, printing elapsed time for each on exit

-triple=<string> - Target triple to assemble for, see -version for available targets

-verify-dom-info - Verify dominator info (time consuming)

-verify-loop-info - Verify loop info (time consuming)

-verify-regalloc - Verify during register allocation

-verify-region-info - Verify region info (time consuming)

-verify-scev - Verify ScalarEvolution's backedge taken counts (slow)

-version - Display the version of this program

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

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