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Diffstat (limited to 'tests/codegen-llvm/tied-features-strength.rs')
| -rw-r--r-- | tests/codegen-llvm/tied-features-strength.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/codegen-llvm/tied-features-strength.rs b/tests/codegen-llvm/tied-features-strength.rs new file mode 100644 index 00000000000..81499c070d1 --- /dev/null +++ b/tests/codegen-llvm/tied-features-strength.rs @@ -0,0 +1,34 @@ +// ignore-tidy-linelength +//@ add-core-stubs +//@ revisions: ENABLE_SVE DISABLE_SVE DISABLE_NEON ENABLE_NEON +//@ compile-flags: --crate-type=rlib --target=aarch64-unknown-linux-gnu +//@ needs-llvm-components: aarch64 + +// Rust made SVE require neon. +//@ [ENABLE_SVE] compile-flags: -C target-feature=+sve -Copt-level=0 +// ENABLE_SVE: attributes #0 +// ENABLE_SVE-SAME: +neon +// ENABLE_SVE-SAME: +sve + +// However, disabling SVE does not disable neon. +//@ [DISABLE_SVE] compile-flags: -C target-feature=-sve -Copt-level=0 +// DISABLE_SVE: attributes #0 +// DISABLE_SVE-NOT: -neon +// DISABLE_SVE-SAME: -sve + +// OTOH, neon fn `fp-armv8` are fully tied; toggling neon must toggle `fp-armv8` the same way. +//@ [DISABLE_NEON] compile-flags: -C target-feature=-neon -Copt-level=0 +// DISABLE_NEON: attributes #0 +// DISABLE_NEON-SAME: -neon +// DISABLE_NEON-SAME: -fp-armv8 + +//@ [ENABLE_NEON] compile-flags: -C target-feature=+neon -Copt-level=0 +// ENABLE_NEON: attributes #0 = { {{.*}} "target-features"="{{((\+outline-atomics,?)|(\+v8a,?)|(\+fp-armv8,?)|(\+neon,?))*}}" } + +#![feature(no_core, lang_items)] +#![no_core] + +extern crate minicore; +use minicore::*; + +pub fn test() {} |