dnrops
/
rust
mirror of https://github.com/rust-lang/rust.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Tie neon with fp-armv8. 

In #91608 the fp-armv8 feature was removed as it's tied to the neon
feature. However disabling neon didn't actually disable the use of
floating point registers and instructions, for this `-fp-armv8` is
required.
This commit is contained in:
Jamie Cunliffe 2023-01-17 15:49:20 +00:00
parent 48ec50ae39
commit 4cca436e30
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
compiler/rustc_codegen_llvm/src/llvm_util.rs
View File

@ -163,8 +163,10 @@ pub fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> SmallVec<[&'a str; 2]
("aarch64", "pmuv3") => smallvec!["perfmon"],
("aarch64", "paca") => smallvec!["pauth"],
("aarch64", "pacg") => smallvec!["pauth"],
// Rust ties fp and neon together. In LLVM neon implicitly enables fp,
// but we manually enable neon when a feature only implicitly enables fp
// Rust ties fp and neon together.
("aarch64", "neon") => smallvec!["neon", "fp-armv8"],
// In LLVM neon implicitly enables fp, but we manually enable
// neon when a feature only implicitly enables fp
("aarch64", "f32mm") => smallvec!["f32mm", "neon"],
("aarch64", "f64mm") => smallvec!["f64mm", "neon"],
("aarch64", "fhm") => smallvec!["fp16fml", "neon"],