Enable supported bitmanip extensions for Rust demos

Ibex supports a few more bitmanip extensions but they're not supported in upstream LLVM / Rust.
lowRISC · Aug 22, 2024 · a984fcf · a984fcf
1 parent bce6eff
commit a984fcf
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diff --git a/sw/rust/.cargo/config.toml b/sw/rust/.cargo/config.toml
@@ -5,6 +5,9 @@
 [build]
 target = "riscv32imc-unknown-none-elf"
 
+# Enable supported bitmanip extension features.
+rustflags = ["-Ctarget-feature=+zba,+zbb,+zbc,+zbs"]
+
 [target.riscv32imc-unknown-none-elf]
 runner = "../../util/load_demo_system.sh run"
 

diff --git a/sw/rust/rust-toolchain.toml b/sw/rust/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-targets = ["riscv32imc-unknown-none-elf"]
 channel = "nightly"
+components = ["rust-src"]