llvm-mc-3.4 (1)

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

The full documentation for llvm-mc is maintained as a Texinfo manual. If the info and llvm-mc programs are properly installed at your site, the command

• info llvm-mc

should give you access to the complete manual.