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avrabe merged 1 commit into from
Jun 9, 2026
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chore(release): v0.11.35 — pin sweep + changelog #286

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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]

## [0.11.35] - 2026-06-09

**In-place select + spill-cost ranking — the first VCR codegen-quality release
(#209/#242, VCR-SEL-002).**

- **In-place select (#283):** the stack selector's `Select` lowering reuses
`val2`'s register as the destination when `val2` is a consumed temp (not a
live param, distinct from cond/val1), eliding the `EQ` "keep val2"
conditional move — one `IT;MOV` per qualifying select instead of two, which
is what native emits for a clamp `(x>k)?k:x`. Falls back to the fresh-dst
two-move form when the guards don't hold (#193 param-clobber class).
Measured `.text`: control_step 378→354 B (−6.3 %), flight_seam inlined
1058→1020 B (−3.6 %), flat 1294→1244 B (−3.9 %). All four differential
fixtures RESULT-identical (control_step 13/13 `0x00210A55`, flight_seam
inlined+flat `0x07FDF307`, div_const 338/338).
- **Spill-cost ranking (#285, VCR-RA-001 wiring step 2):** the Chaitin/Briggs
colourer picks optimistic spill candidates by cost/degree (cost = def+use
occurrence count) instead of degree-only; the uncosted API reproduces the
historic choice exactly. Pure and unwired — fixture ELFs bit-identical.
- **Allocator substrate (#279–#281, unwired/flag-gated):** SelectMove/Select
modeled in `reg_effect`; allocator driver + `SYNTH_SHADOW_ALLOC` shadow
pass; const-CSE rematerialization-avoidance behind `SYNTH_CONST_CSE`.
- **VCR traceability (#282, #284):** VCR-SEL-002/VCR-RA-002 filed;
tool-qualification top-of-V (VCR-TQ-001/002: DO-178C/ISO 26262/IEC 61508/
EN 50128 classification + evidence pillars); release-plan tags
(`release-vX.Y`, queryable via `rivet list --filter`).

Falsification: this release is wrong if any module produces a different
*result* than wasmtime where `val2`'s register was still needed after a select
— watched by the four differentials and gale's on-target baselines
(filter_axis 37 / control_step 158 / flat_flight 255 / controller_step 162).

## [0.11.34] - 2026-06-05

**Un-wire the default-on `mul`+`add`→`mla` fusion — it regresses on-target until
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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 = "0.11.34"
version = "0.11.35"
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 = "0.11.34",
version = "0.11.35",
)

# Bazel dependencies
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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 = "0.11.34" }
synth-core = { path = "../synth-core", version = "0.11.35" }
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 = "0.11.34" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.34" }
synth-core = { path = "../synth-core", version = "0.11.35" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.35" }
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 = "0.11.34" }
synth-core = { path = "../synth-core", version = "0.11.35" }
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 = "0.11.34" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.34", optional = true }
synth-core = { path = "../synth-core", version = "0.11.35" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.35", 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 = "0.11.34" }
synth-frontend = { path = "../synth-frontend", version = "0.11.34" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.34" }
synth-backend = { path = "../synth-backend", version = "0.11.34" }
synth-core = { path = "../synth-core", version = "0.11.35" }
synth-frontend = { path = "../synth-frontend", version = "0.11.35" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.35" }
synth-backend = { path = "../synth-backend", version = "0.11.35" }

# Optional external backends
synth-backend-awsm = { path = "../synth-backend-awsm", version = "0.11.34", optional = true }
synth-backend-wasker = { path = "../synth-backend-wasker", version = "0.11.34", optional = true }
synth-backend-riscv = { path = "../synth-backend-riscv", version = "0.11.34", optional = true }
synth-backend-awsm = { path = "../synth-backend-awsm", version = "0.11.35", optional = true }
synth-backend-wasker = { path = "../synth-backend-wasker", version = "0.11.35", optional = true }
synth-backend-riscv = { path = "../synth-backend-riscv", version = "0.11.35", optional = true }

# Optional verification (requires z3)
synth-verify = { path = "../synth-verify", version = "0.11.34", optional = true, features = ["z3-solver", "arm"] }
synth-verify = { path = "../synth-verify", version = "0.11.35", 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 = "0.11.34" }
synth-core = { path = "../synth-core", version = "0.11.35" }

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 = "0.11.34" }
synth-cfg = { path = "../synth-cfg", version = "0.11.35" }

[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 = "0.11.34" }
synth-cfg = { path = "../synth-cfg", version = "0.11.34" }
synth-opt = { path = "../synth-opt", version = "0.11.34" }
synth-core = { path = "../synth-core", version = "0.11.35" }
synth-cfg = { path = "../synth-cfg", version = "0.11.35" }
synth-opt = { path = "../synth-opt", version = "0.11.35" }
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 = "0.11.34" }
synth-cfg = { path = "../synth-cfg", version = "0.11.34" }
synth-opt = { path = "../synth-opt", version = "0.11.34" }
synth-core = { path = "../synth-core", version = "0.11.35" }
synth-cfg = { path = "../synth-cfg", version = "0.11.35" }
synth-opt = { path = "../synth-opt", version = "0.11.35" }

# ARM synthesis (optional, behind 'arm' feature)
synth-synthesis = { path = "../synth-synthesis", version = "0.11.34", optional = true }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.35", optional = true }

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