From 6b96a60611c5edaa107b109b5a50e58a64a33fc2 Mon Sep 17 00:00:00 2001 From: Caleb Zulawski Date: Sun, 4 Aug 2024 15:32:17 -0400 Subject: [PATCH] Add implied features to non-target-feature functions --- compiler/rustc_codegen_llvm/src/llvm_util.rs | 26 ++++++++++++++++---- tests/codegen/target-feature-overrides.rs | 6 ++--- tests/codegen/tied-features-strength.rs | 2 +- 3 files changed, 25 insertions(+), 9 deletions(-) diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs index 10cba179c75..1a80824a3b7 100644 --- a/compiler/rustc_codegen_llvm/src/llvm_util.rs +++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs @@ -8,6 +8,7 @@ use rustc_codegen_ssa::base::wants_wasm_eh; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_data_structures::small_c_str::SmallCStr; +use rustc_data_structures::unord::UnordSet; use rustc_fs_util::path_to_c_string; use rustc_middle::bug; use rustc_session::config::{PrintKind, PrintRequest}; @@ -553,11 +554,26 @@ pub(crate) fn global_llvm_features( let supported_features = sess.target.supported_target_features(); let (llvm_major, _, _) = get_version(); let mut featsmap = FxHashMap::default(); - let feats = sess - .opts - .cg - .target_feature - .split(',') + + // insert implied features + let mut all_rust_features = vec![]; + for feature in sess.opts.cg.target_feature.split(',') { + match feature.strip_prefix('+') { + Some(feature) => all_rust_features.extend( + UnordSet::from( + sess.target + .implied_target_features(std::iter::once(Symbol::intern(feature))), + ) + .to_sorted_stable_ord() + .iter() + .map(|s| format!("+{}", s.as_str())), + ), + _ => all_rust_features.push(feature.to_string()), + } + } + + let feats = all_rust_features + .iter() .filter_map(|s| { let enable_disable = match s.chars().next() { None => return None, diff --git a/tests/codegen/target-feature-overrides.rs b/tests/codegen/target-feature-overrides.rs index 5b7489c96cf..f38a1ae72de 100644 --- a/tests/codegen/target-feature-overrides.rs +++ b/tests/codegen/target-feature-overrides.rs @@ -1,7 +1,7 @@ //@ revisions: COMPAT INCOMPAT //@ needs-llvm-components: x86 //@ compile-flags: --target=x86_64-unknown-linux-gnu -Copt-level=3 -//@ [COMPAT] compile-flags: -Ctarget-feature=+avx2,+avx +//@ [COMPAT] compile-flags: -Ctarget-feature=+avx2 //@ [INCOMPAT] compile-flags: -Ctarget-feature=-avx2,-avx // See also tests/assembly/target-feature-multiple.rs @@ -39,8 +39,8 @@ pub unsafe fn banana() -> u32 { } // CHECK: attributes [[APPLEATTRS]] -// COMPAT-SAME: "target-features"="+avx2,+avx,{{.*}}" +// COMPAT-SAME: "target-features"="+avx,+avx2,{{.*}}" // INCOMPAT-SAME: "target-features"="-avx2,-avx,+avx,{{.*}}" // CHECK: attributes [[BANANAATTRS]] -// COMPAT-SAME: "target-features"="+avx2,+avx,{{.*}}" +// COMPAT-SAME: "target-features"="+avx,+avx2,{{.*}}" // INCOMPAT-SAME: "target-features"="-avx2,-avx" diff --git a/tests/codegen/tied-features-strength.rs b/tests/codegen/tied-features-strength.rs index 7f0805bc1b4..1b4596ae2cb 100644 --- a/tests/codegen/tied-features-strength.rs +++ b/tests/codegen/tied-features-strength.rs @@ -8,7 +8,7 @@ // is LLVM-14 we can remove the optional regex matching for this feature. //@ [ENABLE_SVE] compile-flags: -C target-feature=+sve -Copt-level=0 -// ENABLE_SVE: attributes #0 = { {{.*}} "target-features"="{{((\+outline-atomics,?)|(\+v8a,?)?|(\+sve,?)|(\+neon,?))*}}" } +// ENABLE_SVE: attributes #0 = { {{.*}} "target-features"="{{((\+outline-atomics,?)|(\+v8a,?)?|(\+sve,?)|(\+neon,?)|(\+fp-armv8,?))*}}" } //@ [DISABLE_SVE] compile-flags: -C target-feature=-sve -Copt-level=0 // DISABLE_SVE: attributes #0 = { {{.*}} "target-features"="{{((\+outline-atomics,?)|(\+v8a,?)?|(-sve,?)|(\+neon,?))*}}" }