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rust/compiler/rustc_codegen_llvm
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bors bb8b11e67d Auto merge of #120718 - saethlin:reasonable-fast-math, r=nnethercote 
Add "algebraic" fast-math intrinsics, based on fast-math ops that cannot return poison

Setting all of LLVM's fast-math flags makes our fast-math intrinsics very dangerous, because some inputs are UB. This set of flags permits common algebraic transformations, but according to the [LangRef](https://llvm.org/docs/LangRef.html#fastmath), only the flags `nnan` (no nans) and `ninf` (no infs) can produce poison.

And this uses the algebraic float ops to fix https://github.com/rust-lang/rust/issues/120720

cc `@orlp`
2024-02-21 09:43:33 +00:00
..
src Auto merge of #120718 - saethlin:reasonable-fast-math, r=nnethercote 2024-02-21 09:43:33 +00:00
Cargo.toml Update measureme crate to version 11 2024-01-13 16:32:03 +01:00
messages.ftl Emit a diagnostic for invalid target options 2024-02-03 22:03:25 -05:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

README.md

The codegen crate contains the code to convert from MIR into LLVM IR, and then from LLVM IR into machine code. In general it contains code that runs towards the end of the compilation process.

For more information about how codegen works, see the rustc dev guide.