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mach backend: allow snapshotting IR graphs with the SNAPSHOT_REGALLOC env variable;

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This also requires the serde feature, which isn't enabled by default,
thus it must be passed as a command-line argument to cargo.
This commit is contained in:
Benjamin Bouvier
2020-06-08 17:17:11 +02:00
parent 46093f6119
commit 5d01603390
3 changed files with 20 additions and 0 deletions
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5
cranelift/codegen/Cargo.toml
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@@ -20,6 +20,7 @@ hashbrown = { version = "0.7", optional = true }
target-lexicon = "0.10"
log = { version = "0.4.6", default-features = false }
serde = { version = "1.0.94", features = ["derive"], optional = true }
bincode = { version = "1.2.1", optional = true }
gimli = { version = "0.21.0", default-features = false, features = ["write"], optional = true }
smallvec = { version = "1.0.0" }
thiserror = "1.0.4"
@@ -74,6 +75,10 @@ all-arch = [
# For dependent crates that want to serialize some parts of cranelift
enable-serde = ["serde"]
# Allow snapshotting regalloc test cases. Useful only to report bad register
# allocation failures, or for regalloc.rs developers.
regalloc-snapshot = ["bincode", "regalloc/enable-serde"]
# Recompile our optimizations that are written in the `peepmatic` DSL into a
# compact finite-state transducer automaton.
rebuild-peephole-optimizers = ["peepmatic"]