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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I've hoped for a while that LLVM's support for such targets would improve, but maybe the ubiquity of ARM microcontrollers makes that more unlikely now. There is an AVR target for example, but in my attempt to use Rust on an AVR I ran into several incorrectness bugs - and newer versions of LLVM are plain broken [0]. There is also an MSP430 backend but I've never had an excuse to play around with that...
Maybe the libgccjit backend for Rust will solve the specific scenario I was interested in, but it doesn't improve anything for LLVM itself.
[0] - https://github.com/rust-lang/rust/issues/88252
Took a while but this issue was fixed this year. Until then, you could compile a patched version of LLVM, or use an older nightly.
And the code generation was quite broken indeed. Most importantly the saving of registers within interrupt handlers. Hard to understand the bug, but I had documented a simple ask inline solution on the issue. It has been fixed since then.
My last experience was quite good. And I didn't notice wrong codegen.
As an aside, the inline asm combines pretty well with generics to produce custom machine code during compilation. For example I was able to reproduce the gcc-avr built-in for delays: https://github.com/avr-rust/delay/blob/cycacc/src/delay_cycl...