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ARM: expose rclass and dsp target features

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- `dsp`: the subtarget supports the DSP (saturating arith. and such)
         instructions
- `rclass`: target is a Cortex-R

Both features are useful to support ARM MCUs on `coresimd`.

Note: Cortex-R52 is the first Armv8-R with `neon` support
This commit is contained in:
Paolo Teti 2018-07-25 09:27:55 +02:00
parent 1398572403
commit 580f437ff2
1 changed files with 2 additions and 0 deletions
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src/librustc_codegen_llvm/llvm_util.rs
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@ -85,6 +85,8 @@ unsafe fn configure_llvm(sess: &Session) {
const ARM_WHITELIST: &[(&str, Option<&str>)] = &[ const ARM_WHITELIST: &[(&str, Option<&str>)] = &[
("mclass", Some("arm_target_feature")), ("mclass", Some("arm_target_feature")),
("rclass", Some("arm_target_feature")),
("dsp", Some("arm_target_feature")),
("neon", Some("arm_target_feature")), ("neon", Some("arm_target_feature")),
("v7", Some("arm_target_feature")), ("v7", Some("arm_target_feature")),
("vfp2", Some("arm_target_feature")), ("vfp2", Some("arm_target_feature")),