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Merged
avrabe merged 1 commit into from
Jun 11, 2026
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chore(release): v0.11.40 — the allocator acceptance release #328

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32 changes: 32 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -7,6 +7,38 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

## [0.11.40] - 2026-06-11

**THE ALLOCATOR ACCEPTANCE RELEASE — VCR-RA-001's five criteria are all met,
and gale's k_mutex_unlock lane unblocks (#242, #326).**

- **i64 pair-spill via param frame-backing** (#325): the last acceptance
criterion closes. The true pair-exhaustion blocker was pinned param home
registers (no stack spill can free them); a third retry-ladder rung forces
the proven #204 param frame-backing onto call-free functions, after which
a consecutive pair always exists (pigeonhole over the freed pool). Ladder:
default -> spill-only (#320) -> spill+param-backing, each rung triggered
only by its predecessor's exact error — bit-identity stays structural.
NEW high-pressure-i64 lane: hard Err on v0.11.39 -> 6/6 vs wasmtime.
- **Arg-move cycles via the parallel-move resolver** (#327, gale #326): the
call-marshal cycle-breaker no longer demands a callee-saved register —
VCR-RA-004's resolver (v0.11.38) breaks cycles via a stack-scratch cell
when registers are saturated. This unblocks the dissolved k_mutex_unlock
(gale's exact error reproduced on main by the committed mutex_pressure
lane; 7/7 vs wasmtime on the fix) AND killed a latent wrong-code bug: the
old cycle-breaker miscompiled genuine 2-swaps (duplicated a value).
- **VCR-RA-001 status: implemented.** All five criteria verified: no
hard-fail on high-pressure i32 AND i64 modules; fixtures bit-identical
through six releases; cycles equal-or-better on the G474RE (gale); the
v0.11.20 cost-gate revert EXECUTED (#322); the backward-dataflow validator
guarding every re-allocated segment (#323). Honest bounds: the 8-slot
spill pool, stack-passed params, the R8-pair/i64-param class (tracked).

Falsification: wrong if gale's mutex lane fails on silicon (native ref 124),
any previously-compiling module's bytes change, or any pressure lane
disagrees with wasmtime.


## [0.11.39] - 2026-06-11

**The assurance carrier: a backward-dataflow translation validator now guards
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34 changes: 17 additions & 17 deletions Cargo.lock
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2 changes: 1 addition & 1 deletion Cargo.toml
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Expand Up @@ -27,7 +27,7 @@ resolver = "2"
# semver to publish, so the convention now catches up: workspace
# version follows the release tag, bumped pre-tag in the release
# checklist. See docs/release-process.md.
version = "0.11.39"
version = "0.11.40"
edition = "2024"
rust-version = "1.88"
authors = ["PulseEngine Team"]
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2 changes: 1 addition & 1 deletion MODULE.bazel
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Expand Up @@ -7,7 +7,7 @@ module(
name = "synth",
# Kept in lockstep with [workspace.package] version in Cargo.toml.
# Both are bumped pre-tag — see docs/release-process.md.
version = "0.11.39",
version = "0.11.40",
)

# Bazel dependencies
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2 changes: 1 addition & 1 deletion artifacts/verified-codegen-roadmap.yaml
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Expand Up @@ -143,7 +143,7 @@ artifacts:
shortcuts be reverted toward the clean form. Must keep the reserved-reg
architecture (R9 globals / R11 mem-base / R12 IP-scratch) and the
bounds-mode R10 invariant.
status: proposed
status: implemented
tags: [codegen, register-allocation, ssa, regalloc2, track-a, release-v0.11.40]
links:
- type: derives-from
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2 changes: 1 addition & 1 deletion crates/synth-backend-awsm/Cargo.toml
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Expand Up @@ -11,6 +11,6 @@ categories.workspace = true
description = "aWsm backend integration for the Synth compiler"

[dependencies]
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-core = { path = "../synth-core", version = "0.11.40" }
anyhow.workspace = true
thiserror.workspace = true
4 changes: 2 additions & 2 deletions crates/synth-backend-riscv/Cargo.toml
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Expand Up @@ -11,8 +11,8 @@ categories.workspace = true
description = "RISC-V encoder, ELF builder, PMP allocator, and bare-metal startup for synth"

[dependencies]
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.39" }
synth-core = { path = "../synth-core", version = "0.11.40" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.40" }
anyhow.workspace = true
thiserror.workspace = true
tracing.workspace = true
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2 changes: 1 addition & 1 deletion crates/synth-backend-wasker/Cargo.toml
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Expand Up @@ -11,6 +11,6 @@ categories.workspace = true
description = "Wasker backend integration for the Synth compiler"

[dependencies]
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-core = { path = "../synth-core", version = "0.11.40" }
anyhow.workspace = true
thiserror.workspace = true
4 changes: 2 additions & 2 deletions crates/synth-backend/Cargo.toml
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Expand Up @@ -15,7 +15,7 @@ default = ["arm-cortex-m"]
arm-cortex-m = ["synth-synthesis"]

[dependencies]
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.39", optional = true }
synth-core = { path = "../synth-core", version = "0.11.40" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.40", optional = true }
anyhow.workspace = true
thiserror.workspace = true
16 changes: 8 additions & 8 deletions crates/synth-cli/Cargo.toml
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Expand Up @@ -27,18 +27,18 @@ verify = ["synth-verify"]
# Path deps carry `version` so `cargo publish` rewrites them to the
# crates.io coordinate. Bumping the workspace version requires
# updating these in lockstep — see docs/release-process.md.
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-frontend = { path = "../synth-frontend", version = "0.11.39" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.39" }
synth-backend = { path = "../synth-backend", version = "0.11.39" }
synth-core = { path = "../synth-core", version = "0.11.40" }
synth-frontend = { path = "../synth-frontend", version = "0.11.40" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.40" }
synth-backend = { path = "../synth-backend", version = "0.11.40" }

# Optional external backends
synth-backend-awsm = { path = "../synth-backend-awsm", version = "0.11.39", optional = true }
synth-backend-wasker = { path = "../synth-backend-wasker", version = "0.11.39", optional = true }
synth-backend-riscv = { path = "../synth-backend-riscv", version = "0.11.39", optional = true }
synth-backend-awsm = { path = "../synth-backend-awsm", version = "0.11.40", optional = true }
synth-backend-wasker = { path = "../synth-backend-wasker", version = "0.11.40", optional = true }
synth-backend-riscv = { path = "../synth-backend-riscv", version = "0.11.40", optional = true }

# Optional verification (requires z3)
synth-verify = { path = "../synth-verify", version = "0.11.39", optional = true, features = ["z3-solver", "arm"] }
synth-verify = { path = "../synth-verify", version = "0.11.40", optional = true, features = ["z3-solver", "arm"] }

# Optional PulseEngine WASM optimizer
# Uncomment when loom crate is available:
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2 changes: 1 addition & 1 deletion crates/synth-frontend/Cargo.toml
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Expand Up @@ -14,7 +14,7 @@ description = "WASM/WAT parser and module decoder frontend for the Synth compile
# Internal path deps carry an explicit version so `cargo publish`
# can rewrite to the crates.io coordinate. `path` is used for
# in-workspace builds; `version` is what crates.io sees.
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-core = { path = "../synth-core", version = "0.11.40" }

wasmparser.workspace = true
wasm-encoder.workspace = true
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2 changes: 1 addition & 1 deletion crates/synth-opt/Cargo.toml
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Expand Up @@ -11,7 +11,7 @@ categories.workspace = true
description = "Peephole optimization passes for the Synth compiler"

[dependencies]
synth-cfg = { path = "../synth-cfg", version = "0.11.39" }
synth-cfg = { path = "../synth-cfg", version = "0.11.40" }

[dev-dependencies]
criterion = { version = "0.5", features = ["html_reports"] }
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6 changes: 3 additions & 3 deletions crates/synth-synthesis/Cargo.toml
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Expand Up @@ -11,9 +11,9 @@ categories.workspace = true
description = "WASM-to-ARM instruction selection and peephole optimizer"

[dependencies]
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-cfg = { path = "../synth-cfg", version = "0.11.39" }
synth-opt = { path = "../synth-opt", version = "0.11.39" }
synth-core = { path = "../synth-core", version = "0.11.40" }
synth-cfg = { path = "../synth-cfg", version = "0.11.40" }
synth-opt = { path = "../synth-opt", version = "0.11.40" }
serde.workspace = true
anyhow.workspace = true
thiserror.workspace = true
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8 changes: 4 additions & 4 deletions crates/synth-verify/Cargo.toml
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Expand Up @@ -17,12 +17,12 @@ arm = ["synth-synthesis"]

[dependencies]
# Core dependencies (always required)
synth-core = { path = "../synth-core", version = "0.11.39" }
synth-cfg = { path = "../synth-cfg", version = "0.11.39" }
synth-opt = { path = "../synth-opt", version = "0.11.39" }
synth-core = { path = "../synth-core", version = "0.11.40" }
synth-cfg = { path = "../synth-cfg", version = "0.11.40" }
synth-opt = { path = "../synth-opt", version = "0.11.40" }

# ARM synthesis (optional, behind 'arm' feature)
synth-synthesis = { path = "../synth-synthesis", version = "0.11.39", optional = true }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.40", optional = true }

# SMT solver for formal verification
z3 = { version = "0.19", features = ["static-link-z3"], optional = true }
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