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Rollup merge of #99155 - Amanieu:unstable-target-features, r=davidtwco

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Keep unstable target features for asm feature checking

Inline assembly uses the target features to determine which registers
are available on the current target. However it needs to be able to
access unstable target features for this.

Fixes #99071
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Dylan DPC 2022-07-13 19:32:36 +05:30 • committed by GitHub
commit 68cfdbb5c1
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10 changed files with 67 additions and 28 deletions
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5
compiler/rustc_interface/src/util.rs
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@ -48,7 +48,10 @@ pub fn add_configuration(
) {
let tf = sym::target_feature;
let target_features = codegen_backend.target_features(sess);
let unstable_target_features = codegen_backend.target_features(sess, true);
sess.unstable_target_features.extend(unstable_target_features.iter().cloned());
let target_features = codegen_backend.target_features(sess, false);
sess.target_features.extend(target_features.iter().cloned());
cfg.extend(target_features.into_iter().map(|feat| (tf, Some(feat))));