diff --git a/cranelift/codegen/build.rs b/cranelift/codegen/build.rs
index d9d6f13fc5..ef89d48ffe 100644
--- a/cranelift/codegen/build.rs
+++ b/cranelift/codegen/build.rs
@@ -50,8 +50,7 @@ fn main() {
     let crate_dir = cur_dir.as_path();
 
     // Make sure we rebuild if this build script changes (will not happen with
-    // if the path to this file contains non-UTF8 bytes). The `build.py` script
-    // prints out its own dependencies.
+    // if the path to this file contains non-UTF-8 bytes).
     println!(
         "cargo:rerun-if-changed={}",
         crate_dir.join("build.rs").to_str().unwrap()
diff --git a/cranelift/codegen/src/constant_hash.rs b/cranelift/codegen/src/constant_hash.rs
index d6afc5eed0..5785a89825 100644
--- a/cranelift/codegen/src/constant_hash.rs
+++ b/cranelift/codegen/src/constant_hash.rs
@@ -1,6 +1,6 @@
 //! Runtime support for precomputed constant hash tables.
 //!
-//! The `cranelift-codegen/meta-python/constant_hash.py` Python module can generate constant hash tables
+//! The `cranelift-codegen/meta/src/constant_hash.rs` Rust crate can generate constant hash tables
 //! using open addressing and quadratic probing. The hash tables are arrays that are guaranteed to:
 //!
 //! - Have a power-of-two size.
@@ -56,7 +56,7 @@ pub fn probe<K: Copy + Eq, T: Table<K> + ?Sized>(
 }
 
 /// A primitive hash function for matching opcodes.
-/// Must match `cranelift-codegen/meta-python/constant_hash.py` and `cranelift-codegen/meta/constant_hash.rs`.
+/// Must match `cranelift-codegen/meta/src/constant_hash.rs`.
 pub fn simple_hash(s: &str) -> usize {
     let mut h: u32 = 5381;
     for c in s.chars() {
@@ -71,7 +71,7 @@ mod tests {
 
     #[test]
     fn basic() {
-        // c.f. `meta-python/constant_hash.py` tests.
+        // c.f. `meta/src/constant_hash.rs` tests.
         assert_eq!(simple_hash("Hello"), 0x2fa70c01);
         assert_eq!(simple_hash("world"), 0x5b0c31d5);
     }
diff --git a/cranelift/codegen/src/ir/builder.rs b/cranelift/codegen/src/ir/builder.rs
index 43578d5378..13202870f3 100644
--- a/cranelift/codegen/src/ir/builder.rs
+++ b/cranelift/codegen/src/ir/builder.rs
@@ -32,7 +32,7 @@ pub trait InstBuilderBase<'f>: Sized {
     fn build(self, data: InstructionData, ctrl_typevar: Type) -> (Inst, &'f mut DataFlowGraph);
 }
 
-// Include trait code generated by `cranelift-codegen/meta-python/gen_instr.py`.
+// Include trait code generated by `cranelift-codegen/meta/src/gen_inst.rs`.
 //
 // This file defines the `InstBuilder` trait as an extension of `InstBuilderBase` with methods per
 // instruction format and per opcode.
diff --git a/cranelift/codegen/src/ir/immediates.rs b/cranelift/codegen/src/ir/immediates.rs
index 36cc470aef..73d1d8cc21 100644
--- a/cranelift/codegen/src/ir/immediates.rs
+++ b/cranelift/codegen/src/ir/immediates.rs
@@ -1,8 +1,8 @@
 //! Immediate operands for Cranelift instructions
 //!
 //! This module defines the types of immediate operands that can appear on Cranelift instructions.
-//! Each type here should have a corresponding definition in the `cranelift.immediates` Python
-//! module in the meta language.
+//! Each type here should have a corresponding definition in the
+//! `cranelift-codegen/meta/src/shared/immediates` crate in the meta language.
 
 use core::fmt::{self, Display, Formatter};
 use core::mem;
diff --git a/cranelift/codegen/src/ir/instructions.rs b/cranelift/codegen/src/ir/instructions.rs
index ae227dc5f7..8278888d7e 100644
--- a/cranelift/codegen/src/ir/instructions.rs
+++ b/cranelift/codegen/src/ir/instructions.rs
@@ -28,7 +28,7 @@ pub type ValueList = entity::EntityList<Value>;
 /// Memory pool for holding value lists. See `ValueList`.
 pub type ValueListPool = entity::ListPool<Value>;
 
-// Include code generated by `cranelift-codegen/meta-python/gen_instr.py`. This file contains:
+// Include code generated by `cranelift-codegen/meta/src/gen_inst.rs`. This file contains:
 //
 // - The `pub enum InstructionFormat` enum with all the instruction formats.
 // - The `pub enum InstructionData` enum with all the instruction data fields.
diff --git a/cranelift/codegen/src/ir/types.rs b/cranelift/codegen/src/ir/types.rs
index eee39c83e4..20bed0c4ce 100644
--- a/cranelift/codegen/src/ir/types.rs
+++ b/cranelift/codegen/src/ir/types.rs
@@ -25,7 +25,7 @@ pub struct Type(u8);
 /// Not a valid type. Can't be loaded or stored. Can't be part of a SIMD vector.
 pub const INVALID: Type = Type(0);
 
-/// Start of the lane types. See also `meta-python/cdsl/types.py`.
+/// Start of the lane types. See also `meta/src/cdsl/types.rs`.
 const LANE_BASE: u8 = 0x70;
 
 /// Start of the 2-lane vector types.
diff --git a/cranelift/codegen/src/isa/arm32/settings.rs b/cranelift/codegen/src/isa/arm32/settings.rs
index 084c142399..bef631b2bb 100644
--- a/cranelift/codegen/src/isa/arm32/settings.rs
+++ b/cranelift/codegen/src/isa/arm32/settings.rs
@@ -3,7 +3,7 @@
 use crate::settings::{self, detail, Builder};
 use core::fmt;
 
-// Include code generated by `cranelift-codegen/meta-python/gen_settings.py`. This file contains a public
-// `Flags` struct with an impl for all of the settings defined in
-// `cranelift-codegen/meta-python/isa/arm32/settings.py`.
+// Include code generated by `cranelift-codegen/meta/src/gen_settings.rs`. This file contains a
+// public `Flags` struct with an impl for all of the settings defined in
+// `cranelift-codegen/meta/src/isa/arm32/mod.rs`.
 include!(concat!(env!("OUT_DIR"), "/settings-arm32.rs"));
diff --git a/cranelift/codegen/src/isa/arm64/settings.rs b/cranelift/codegen/src/isa/arm64/settings.rs
index b7be97e368..56d0f4ee0b 100644
--- a/cranelift/codegen/src/isa/arm64/settings.rs
+++ b/cranelift/codegen/src/isa/arm64/settings.rs
@@ -3,7 +3,7 @@
 use crate::settings::{self, detail, Builder};
 use core::fmt;
 
-// Include code generated by `cranelift-codegen/meta-python/gen_settings.py`. This file contains a public
-// `Flags` struct with an impl for all of the settings defined in
-// `cranelift-codegen/meta-python/isa/arm64/settings.py`.
+// Include code generated by `cranelift-codegen/meta/src/gen_settings.rs`. This file contains a
+// public `Flags` struct with an impl for all of the settings defined in
+// `cranelift-codegen/meta/src/isa/arm64/mod.rs`.
 include!(concat!(env!("OUT_DIR"), "/settings-arm64.rs"));
diff --git a/cranelift/codegen/src/isa/enc_tables.rs b/cranelift/codegen/src/isa/enc_tables.rs
index 45ad86441b..e21557497e 100644
--- a/cranelift/codegen/src/isa/enc_tables.rs
+++ b/cranelift/codegen/src/isa/enc_tables.rs
@@ -1,7 +1,7 @@
 //! Support types for generated encoding tables.
 //!
 //! This module contains types and functions for working with the encoding tables generated by
-//! `cranelift-codegen/meta-python/gen_encoding.py`.
+//! `cranelift-codegen/meta/src/gen_encodings.rs`.
 
 use crate::constant_hash::{probe, Table};
 use crate::ir::{Function, InstructionData, Opcode, Type};
@@ -164,10 +164,10 @@ where
 /// Encoding lists are represented as sequences of u16 words.
 pub type EncListEntry = u16;
 
-/// Number of bits used to represent a predicate. c.f. `meta-python/gen_encoding.py`.
+/// Number of bits used to represent a predicate. c.f. `meta/src/gen_encodings.rs`.
 const PRED_BITS: u8 = 12;
 const PRED_MASK: usize = (1 << PRED_BITS) - 1;
-/// First code word representing a predicate check. c.f. `meta-python/gen_encoding.py`.
+/// First code word representing a predicate check. c.f. `meta/src/gen_encodings.rs`.
 const PRED_START: usize = 0x1000;
 
 /// An iterator over legal encodings for the instruction.
diff --git a/cranelift/codegen/src/isa/registers.rs b/cranelift/codegen/src/isa/registers.rs
index 6baebd7237..3c1b4262c1 100644
--- a/cranelift/codegen/src/isa/registers.rs
+++ b/cranelift/codegen/src/isa/registers.rs
@@ -17,19 +17,19 @@ pub type RegUnit = u16;
 /// The size of this type is determined by the target ISA that has the most register units defined.
 /// Currently that is arm32 which has 64+16 units.
 ///
-/// This type should be coordinated with meta-python/cdsl/registers.py.
+/// This type should be coordinated with meta/src/cdsl/regs.rs.
 pub type RegUnitMask = [u32; 3];
 
 /// A bit mask indexed by register classes.
 ///
 /// The size of this type is determined by the ISA with the most register classes.
 ///
-/// This type should be coordinated with meta-python/cdsl/isa.py.
+/// This type should be coordinated with meta/src/cdsl/regs.rs.
 pub type RegClassMask = u32;
 
 /// Guaranteed maximum number of top-level register classes with pressure tracking in any ISA.
 ///
-/// This can be increased, but should be coordinated with meta-python/cdsl/isa.py.
+/// This can be increased, but should be coordinated with meta/src/cdsl/regs.rs.
 pub const MAX_TRACKED_TOPRCS: usize = 4;
 
 /// The register units in a target ISA are divided into disjoint register banks. Each bank covers a
@@ -37,7 +37,7 @@ pub const MAX_TRACKED_TOPRCS: usize = 4;
 ///
 /// The `RegBank` struct provides a static description of a register bank.
 pub struct RegBank {
-    /// The name of this register bank as defined in the ISA's `registers.py` file.
+    /// The name of this register bank as defined in the ISA's DSL definition.
     pub name: &'static str,
 
     /// The first register unit in this bank.
diff --git a/cranelift/codegen/src/isa/riscv/settings.rs b/cranelift/codegen/src/isa/riscv/settings.rs
index 26999b87ee..3599a93495 100644
--- a/cranelift/codegen/src/isa/riscv/settings.rs
+++ b/cranelift/codegen/src/isa/riscv/settings.rs
@@ -3,9 +3,9 @@
 use crate::settings::{self, detail, Builder};
 use core::fmt;
 
-// Include code generated by `cranelift-codegen/meta-python/gen_settings.py`. This file contains a public
-// `Flags` struct with an impl for all of the settings defined in
-// `cranelift-codegen/meta-python/isa/riscv/settings.py`.
+// Include code generated by `cranelift-codegen/meta/src/gen_settings.rs`. This file contains a
+// public `Flags` struct with an impl for all of the settings defined in
+// `cranelift-codegen/meta/src/isa/riscv/mod.rs`.
 include!(concat!(env!("OUT_DIR"), "/settings-riscv.rs"));
 
 #[cfg(test)]
diff --git a/cranelift/codegen/src/isa/stack.rs b/cranelift/codegen/src/isa/stack.rs
index cc7b578039..852aedddd8 100644
--- a/cranelift/codegen/src/isa/stack.rs
+++ b/cranelift/codegen/src/isa/stack.rs
@@ -82,7 +82,7 @@ pub enum StackBase {
 /// This behaves like a set of `StackBase` variants.
 ///
 /// The internal representation as a `u8` is public because stack base masks are used in constant
-/// tables generated from the Python encoding definitions.
+/// tables generated from the meta-language encoding definitions.
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct StackBaseMask(pub u8);
 
diff --git a/cranelift/codegen/src/isa/x86/settings.rs b/cranelift/codegen/src/isa/x86/settings.rs
index ab5e080662..2d3a3f6698 100644
--- a/cranelift/codegen/src/isa/x86/settings.rs
+++ b/cranelift/codegen/src/isa/x86/settings.rs
@@ -3,9 +3,9 @@
 use crate::settings::{self, detail, Builder};
 use core::fmt;
 
-// Include code generated by `cranelift-codegen/meta-python/gen_settings.py`. This file contains a public
-// `Flags` struct with an impl for all of the settings defined in
-// `cranelift-codegen/meta-python/isa/x86/settings.py`.
+// Include code generated by `cranelift-codegen/meta/src/gen_settings.rs:`. This file contains a
+// public `Flags` struct with an impl for all of the settings defined in
+// `cranelift-codegen/meta/src/isa/x86/settings.rs`.
 include!(concat!(env!("OUT_DIR"), "/settings-x86.rs"));
 
 #[cfg(test)]
diff --git a/cranelift/codegen/src/legalizer/mod.rs b/cranelift/codegen/src/legalizer/mod.rs
index 0a59f0d1b5..b7aa287835 100644
--- a/cranelift/codegen/src/legalizer/mod.rs
+++ b/cranelift/codegen/src/legalizer/mod.rs
@@ -117,14 +117,14 @@ pub fn legalize_function(func: &mut ir::Function, cfg: &mut ControlFlowGraph, is
     }
 }
 
-// Include legalization patterns that were generated by `gen_legalizer.py` from the `XForms` in
-// `cranelift-codegen/meta-python/base/legalize.py`.
+// Include legalization patterns that were generated by `gen_legalizer.rs` from the
+// `TransformGroup` in `cranelift-codegen/meta/shared/legalize.rs`.
 //
 // Concretely, this defines private functions `narrow()`, and `expand()`.
 include!(concat!(env!("OUT_DIR"), "/legalizer.rs"));
 
 /// Custom expansion for conditional trap instructions.
-/// TODO: Add CFG support to the Python patterns so we won't have to do this.
+/// TODO: Add CFG support to the Rust DSL patterns so we won't have to do this.
 fn expand_cond_trap(
     inst: ir::Inst,
     func: &mut ir::Function,
diff --git a/cranelift/codegen/src/predicates.rs b/cranelift/codegen/src/predicates.rs
index da01ad6b2b..978e733c66 100644
--- a/cranelift/codegen/src/predicates.rs
+++ b/cranelift/codegen/src/predicates.rs
@@ -1,7 +1,7 @@
 //! Predicate functions for testing instruction fields.
 //!
 //! This module defines functions that are used by the instruction predicates defined by
-//! `cranelift-codegen/meta-python/cdsl/predicates.py` classes.
+//! `cranelift-codegen/meta/src/cdsl/instructions.rs` classes.
 //!
 //! The predicates the operate on integer fields use `Into<i64>` as a shared trait bound. This
 //! bound is implemented by all the native integer types as well as `Imm64`.
diff --git a/cranelift/codegen/src/regalloc/register_set.rs b/cranelift/codegen/src/regalloc/register_set.rs
index 29b6df7625..c9b419a517 100644
--- a/cranelift/codegen/src/regalloc/register_set.rs
+++ b/cranelift/codegen/src/regalloc/register_set.rs
@@ -89,9 +89,9 @@ impl RegisterSet {
 
         // Mask out the unavailable units.
         for idx in 0..self.avail.len() {
-            // If a single unit in a register is unavailable, the whole register can't be used.
-            // If a register straddles a word boundary, it will be marked as unavailable.
-            // There's an assertion in `cdsl/registers.py` to check for that.
+            // If a single unit in a register is unavailable, the whole register can't be used.  If
+            // a register straddles a word boundary, it will be marked as unavailable.  There's an
+            // assertion in `cranelift-codegen/meta/src/cdsl/regs.rs` to check for that.
             for i in 0..rc.width {
                 rsi.regs[idx] &= self.avail[idx] >> i;
             }
diff --git a/cranelift/codegen/src/settings.rs b/cranelift/codegen/src/settings.rs
index 748484b10c..836b47a5f6 100644
--- a/cranelift/codegen/src/settings.rs
+++ b/cranelift/codegen/src/settings.rs
@@ -331,9 +331,9 @@ pub mod detail {
     }
 }
 
-// Include code generated by `meta-python/gen_settings.py`. This file contains a public `Flags`
-// struct with an impl for all of the settings defined in
-// `cranelift-codegen/meta-python/base/settings.py`.
+// Include code generated by `meta/gen_settings.rs`. This file contains a public `Flags` struct
+// with an implementation for all of the settings defined in
+// `cranelift-codegen/meta/src/shared/settings.rs`.
 include!(concat!(env!("OUT_DIR"), "/settings.rs"));
 
 /// Wrapper containing flags and optionally a `TargetIsa` trait object.