bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Rollup merge of #120965 - ChrisDenton:sahf, r=michaelwoerister

Browse source 
Add lahfsahf and prfchw target feature

This adds target features for LAHF/SAHF and PrefetchW. These came up. along with the existing CMPXCHG16b. as [baseline features](c150e1ca-4a55-4a7e-94c5-bfc8c2e785c5/Windows%2010%20Minimum%20Hardware%20Requirements.pdf) required for x86_64 Windows 10+.
This commit is contained in:
Matthias Krüger 2024-02-12 23:18:54 +01:00 • committed by GitHub
commit 7075502b15
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
8 changed files with 13 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

1
compiler/rustc_codegen_llvm/src/llvm_util.rs
View file

@ -213,6 +213,7 @@ pub fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> LLVMFeature<'a> {
("x86", "rdrand") => LLVMFeature::new("rdrnd"),
("x86", "bmi1") => LLVMFeature::new("bmi"),
("x86", "cmpxchg16b") => LLVMFeature::new("cx16"),
("x86", "lahfsahf") => LLVMFeature::new("sahf"),
("aarch64", "rcpc2") => LLVMFeature::new("rcpc-immo"),
("aarch64", "dpb") => LLVMFeature::new("ccpp"),
("aarch64", "dpb2") => LLVMFeature::new("ccdp"),