OpenGrok

# Bifrost compiler

## Register file

Defined partially in software, partially in hardware.

## Blend shaders

R0 - R3: input (color #0)
R4 - R7: input (color #1)
R8 - R15: general purpose
R48: return address

## Fragment

Anything live during BLEND must respect blend shader registers.

R0 - R3: preloaded (message #0)
R4 - R7: preloaded (message #1)
R57 - R63: preloaded (various)

R0 - R15: general purpose (full threads)
R48 - R63: general purpose (full threads)

R32 - R47: general purpose (half threads, or v6)
`Name`	`Date`	`Size`
Up to higher level directory
`bi_builder.h.py`	09-May-2022	`7K`
`bi_helper_invocations.c`	09-May-2022	`10.2K`
`bi_layout.c`	09-May-2022	`5.5K`
`bi_liveness.c`	09-May-2022	`5.3K`
`bi_lower_divergent_indirects.c`	09-May-2022	`4.5K`
`bi_lower_swizzle.c`	09-May-2022	`4.9K`
`bi_opcodes.c.py`	09-May-2022	`3K`
`bi_opcodes.h.py`	09-May-2022	`3.3K`
`bi_opt_constant_fold.c`	09-May-2022	`3.6K`
`bi_opt_copy_prop.c`	09-May-2022	`3.1K`
`bi_opt_cse.c`	09-May-2022	`6.1K`
`bi_opt_dce.c`	09-May-2022	`6.3K`
`bi_opt_mod_props.c`	09-May-2022	`11.2K`
`bi_opt_push_ubo.c`	09-May-2022	`6.6K`
`bi_pack.c`	09-May-2022	`26.5K`
`bi_packer.c.py`	09-May-2022	`12.8K`
`bi_print.c`	09-May-2022	`5.1K`
`bi_print_common.c`	09-May-2022	`2.8K`
`bi_print_common.h`	09-May-2022	`1.5K`
`bi_printer.c.py`	09-May-2022	`6.4K`
`bi_quirks.h`	09-May-2022	`3.3K`
`bi_ra.c`	09-May-2022	`18.4K`
`bi_schedule.c`	09-May-2022	`71.1K`
`bi_scoreboard.c`	09-May-2022	`4.1K`
`bi_test.h`	09-May-2022	`3.8K`
`bi_validate.c`	09-May-2022	`2.6K`
`bifrost.h`	09-May-2022	`20.3K`
`bifrost_compile.c`	09-May-2022	`139.4K`
`bifrost_compile.h`	09-May-2022	`3.5K`
`bifrost_isa.py`	09-May-2022	`11.6K`
`bifrost_nir.h`	09-May-2022	`1.2K`
`bifrost_nir_algebraic.py`	09-May-2022	`2.1K`
`bir.c`	09-May-2022	`6.9K`
`cmdline.c`	09-May-2022	`11.3K`
`compiler.h`	09-May-2022	`34.1K`
`disassemble.c`	09-May-2022	`27.3K`
`disassemble.h`	09-May-2022	`2.2K`
`gen_disasm.py`	09-May-2022	`12.6K`
`ISA.xml`	09-May-2022	`223.5K`
`meson.build`	09-May-2022	`6.4K`
`Notes.txt`	09-May-2022	`7.3K`
`README.md`	09-May-2022	`517`
`test/`	19-Feb-2026
`valhall/`	19-Feb-2026