nak: Move bitset to compiler crate

This commit intorduces src/compiler/rust crate, which will have
different modules that help to write a backend compiler in Rust.

Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30443>

src/compiler/meson.build

@@ -70,3 +70,7 @@ if with_gallium
   subdir('glsl')
 endif
 subdir('isaspec')
+
+if with_nouveau_vk
+  subdir('rust')
+endif

src/compiler/rust/.rustfmt.toml

@@ -0,0 +1 @@
+max_width = 80

src/compiler/rust/lib.rs

@@ -0,0 +1,4 @@
+// Copyright © 2024 Igalia S.L.
+// SPDX-License-Identifier: MIT
+
+pub mod bitset;

src/compiler/rust/meson.build

@@ -0,0 +1,23 @@
+# Copyright © 2024 Igalia S.L.
+# SPDX-License-Identifier: MIT
+
+_compiler_rs_sources = [
+  'bitset.rs',
+]
+
+_compiler_rs_sources = structured_sources([
+  # lib.rs has to go first
+  'lib.rs',
+  _compiler_rs_sources,
+])
+
+_libcompiler_rs = static_library(
+  'compiler',
+  _compiler_rs_sources,
+  gnu_symbol_visibility : 'hidden',
+  rust_abi : 'rust',
+)
+
+idep_compiler_rs = declare_dependency(
+  link_with : _libcompiler_rs,
+)

src/nouveau/compiler/meson.build

@@ -143,6 +143,7 @@ _libnak_rs = static_library(
   ],
   dependencies : [
     dep_paste,
+    idep_compiler_rs,
     idep_nvidia_headers_rs,
   ],
   link_with : [

src/nouveau/compiler/nak/assign_regs.rs

@@ -2,10 +2,10 @@
 // SPDX-License-Identifier: MIT
 
 use crate::api::{GetDebugFlags, DEBUG};
-use crate::bitset::BitSet;
 use crate::ir::*;
 use crate::liveness::{BlockLiveness, Liveness, SimpleLiveness};
 
+use compiler::bitset::BitSet;
 use std::cmp::{max, Ordering};
 use std::collections::{HashMap, HashSet};
 

src/nouveau/compiler/nak/cfg.rs

@@ -1,8 +1,7 @@
 // Copyright © 2023 Collabora, Ltd.
 // SPDX-License-Identifier: MIT
 
-use crate::bitset::BitSet;
-
+use compiler::bitset::BitSet;
 use std::collections::HashMap;
 use std::hash::Hash;
 use std::ops::{Deref, DerefMut, Index, IndexMut};

src/nouveau/compiler/nak/lib.rs

@@ -3,7 +3,6 @@
 
 mod api;
 mod assign_regs;
-mod bitset;
 mod builder;
 mod calc_instr_deps;
 mod cfg;

src/nouveau/compiler/nak/liveness.rs

@@ -1,9 +1,9 @@
 // Copyright © 2022 Collabora, Ltd.
 // SPDX-License-Identifier: MIT
 
-use crate::bitset::BitSet;
 use crate::ir::*;
 
+use compiler::bitset::BitSet;
 use std::cell::RefCell;
 use std::cmp::{max, Ord, Ordering};
 use std::collections::{hash_set, HashMap, HashSet};

src/nouveau/compiler/nak/opt_bar_prop.rs

@@ -2,9 +2,9 @@
 // SPDX-License-Identifier: MIT
 
 use crate::api::{GetDebugFlags, DEBUG};
-use crate::bitset::BitSet;
 use crate::ir::*;
 
+use compiler::bitset::BitSet;
 use std::collections::HashMap;
 
 struct PhiMap {

src/nouveau/compiler/nak/repair_ssa.rs

@@ -1,10 +1,10 @@
 // Copyright © 2023 Collabora, Ltd.
 // SPDX-License-Identifier: MIT
 
-use crate::bitset::BitSet;
 use crate::ir::*;
 use crate::union_find::UnionFind;
 
+use compiler::bitset::BitSet;
 use std::cell::RefCell;
 use std::collections::HashMap;
 

src/nouveau/compiler/nak/spill_values.rs

@@ -4,12 +4,12 @@
 #![allow(unstable_name_collisions)]
 
 use crate::api::{GetDebugFlags, DEBUG};
-use crate::bitset::BitSet;
 use crate::ir::*;
 use crate::liveness::{
     BlockLiveness, LiveSet, Liveness, NextUseBlockLiveness, NextUseLiveness,
 };
 
+use compiler::bitset::BitSet;
 use std::cell::RefCell;
 use std::cmp::{max, Ordering, Reverse};
 use std::collections::{BinaryHeap, HashMap, HashSet};