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Implement the instruction_set attribute

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This commit is contained in:
xd009642
2020-10-08 23:23:27 +01:00
parent 4437b4b150
commit a6e2b636e6
22 changed files with 247 additions and 4 deletions
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6
compiler/rustc_codegen_llvm/src/attributes.rs
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@@ -18,7 +18,7 @@ use crate::attributes;
use crate::llvm::AttributePlace::Function;
use crate::llvm::{self, Attribute};
use crate::llvm_util;
pub use rustc_attr::{InlineAttr, OptimizeAttr};
pub use rustc_attr::{InlineAttr, InstructionSetAttr, OptimizeAttr};
use crate::context::CodegenCx;
use crate::value::Value;
@@ -310,6 +310,10 @@ pub fn from_fn_attrs(cx: &CodegenCx<'ll, 'tcx>, llfn: &'ll Value, instance: ty::
let feature = &f.as_str();
format!("+{}", llvm_util::to_llvm_feature(cx.tcx.sess, feature))
}))
.chain(codegen_fn_attrs.instruction_set.iter().map(|x| match x {
InstructionSetAttr::ArmA32 => "-thumb-mode".to_string(),
InstructionSetAttr::ArmT32 => "+thumb-mode".to_string(),
}))
.collect::<Vec<String>>()
.join(",");