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Merged
avrabe merged 1 commit into from
May 30, 2026
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chore(release): v0.11.3 — optimizer memory-address miscompilation fix (#178) #182

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26 changes: 26 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -7,6 +7,32 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

## [0.11.3] - 2026-05-30

**Patch: optimizer memory-address miscompilation.** Fixes a correctness bug
where the optimized (default) path dereferenced the wrong memory location.

**Falsification statement.** v0.11.3 is wrong if the optimized path still
emits a fixed-address load/store for a pointer-param (or constant) memory
access, or if optimized and `--no-optimize` output differ for a
pointer-deref function.

### Fixed
- **Optimized path no longer miscompiles linear-memory addresses** (#178,
PR #179). The optimized `wasm_to_ir → ir_to_arm` lowering dropped the
`i32.load`/`i32.store` address operand (the `ADD base, base, Raddr` came out
with garbage registers), so the access hit a fixed address
(`linmem_base + 0x100`) regardless of the operand — for both a dynamic
pointer-param address and a constant one. `optimize_full` now declines
modules using linear-memory load/store and falls back to the correct
`select_with_stack` path (`ldr [fp, Raddr]`). Verified: optimized
pointer-deref output now byte-matches `--no-optimize`. Guarded by
`pointer_deref_optimized_matches_no_optimize_178`.

Trade-off: memory-using modules compile correctly but unoptimized until the
optimized memory path is repaired (#180). The host-ABI / `__linear_memory_base`
contract raised alongside this is tracked in #181.

## [0.11.2] - 2026-05-30

**Patch: gale-wasm ARM linkability, round 2.** Completes the cross-language-LTO
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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 = "0.11.2"
version = "0.11.3"
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 = "0.11.2",
version = "0.11.3",
)

# 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 = "0.11.2" }
synth-core = { path = "../synth-core", version = "0.11.3" }
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 = "0.11.2" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.2" }
synth-core = { path = "../synth-core", version = "0.11.3" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.3" }
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 = "0.11.2" }
synth-core = { path = "../synth-core", version = "0.11.3" }
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 = "0.11.2" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.2", optional = true }
synth-core = { path = "../synth-core", version = "0.11.3" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.3", 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 = "0.11.2" }
synth-frontend = { path = "../synth-frontend", version = "0.11.2" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.2" }
synth-backend = { path = "../synth-backend", version = "0.11.2" }
synth-core = { path = "../synth-core", version = "0.11.3" }
synth-frontend = { path = "../synth-frontend", version = "0.11.3" }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.3" }
synth-backend = { path = "../synth-backend", version = "0.11.3" }

# Optional external backends
synth-backend-awsm = { path = "../synth-backend-awsm", version = "0.11.2", optional = true }
synth-backend-wasker = { path = "../synth-backend-wasker", version = "0.11.2", optional = true }
synth-backend-riscv = { path = "../synth-backend-riscv", version = "0.11.2", optional = true }
synth-backend-awsm = { path = "../synth-backend-awsm", version = "0.11.3", optional = true }
synth-backend-wasker = { path = "../synth-backend-wasker", version = "0.11.3", optional = true }
synth-backend-riscv = { path = "../synth-backend-riscv", version = "0.11.3", optional = true }

# Optional verification (requires z3)
synth-verify = { path = "../synth-verify", version = "0.11.2", optional = true, features = ["z3-solver", "arm"] }
synth-verify = { path = "../synth-verify", version = "0.11.3", 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 = "0.11.2" }
synth-core = { path = "../synth-core", version = "0.11.3" }

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 = "0.11.2" }
synth-cfg = { path = "../synth-cfg", version = "0.11.3" }

[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 = "0.11.2" }
synth-cfg = { path = "../synth-cfg", version = "0.11.2" }
synth-opt = { path = "../synth-opt", version = "0.11.2" }
synth-core = { path = "../synth-core", version = "0.11.3" }
synth-cfg = { path = "../synth-cfg", version = "0.11.3" }
synth-opt = { path = "../synth-opt", version = "0.11.3" }
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 = "0.11.2" }
synth-cfg = { path = "../synth-cfg", version = "0.11.2" }
synth-opt = { path = "../synth-opt", version = "0.11.2" }
synth-core = { path = "../synth-core", version = "0.11.3" }
synth-cfg = { path = "../synth-cfg", version = "0.11.3" }
synth-opt = { path = "../synth-opt", version = "0.11.3" }

# ARM synthesis (optional, behind 'arm' feature)
synth-synthesis = { path = "../synth-synthesis", version = "0.11.2", optional = true }
synth-synthesis = { path = "../synth-synthesis", version = "0.11.3", optional = true }

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