095d818e0c
This ensures that information about target features configured with `-C target-feature=...` or detected with `-C target-cpu=native` is retained for subsequent consumers of LLVM bitcode. This is crucial for linker plugin LTO, since this information is not conveyed to the plugin otherwise.
47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
Rust
// revisions: COMPAT INCOMPAT
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// needs-llvm-components: x86
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// compile-flags: --target=x86_64-unknown-linux-gnu -Copt-level=3
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// [COMPAT] compile-flags: -Ctarget-feature=+avx2,+avx
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// [INCOMPAT] compile-flags: -Ctarget-feature=-avx2,-avx
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// See also src/test/assembly/target-feature-multiple.rs
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#![feature(no_core, lang_items)]
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#![crate_type = "lib"]
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#![no_core]
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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extern "C" {
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fn peach() -> u32;
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}
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#[inline]
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#[target_feature(enable = "avx")]
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#[no_mangle]
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pub unsafe fn apple() -> u32 {
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// CHECK-LABEL: @apple()
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// CHECK-SAME: [[APPLEATTRS:#[0-9]+]] {
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// CHECK: {{.*}}call{{.*}}@peach
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peach()
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}
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// target features same as global
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#[no_mangle]
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pub unsafe fn banana() -> u32 {
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// CHECK-LABEL: @banana()
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// CHECK-SAME: [[BANANAATTRS:#[0-9]+]] {
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// COMPAT: {{.*}}call{{.*}}@peach
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// INCOMPAT: {{.*}}call{{.*}}@apple
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apple() // Compatible for inline in COMPAT revision and can't be inlined in INCOMPAT
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}
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// CHECK: attributes [[APPLEATTRS]]
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// COMPAT-SAME: "target-features"="+avx2,+avx,+avx"
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// INCOMPAT-SAME: "target-features"="-avx2,-avx,+avx"
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// CHECK: attributes [[BANANAATTRS]]
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// COMPAT-SAME: "target-features"="+avx2,+avx"
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// INCOMPAT-SAME: "target-features"="-avx2,-avx"
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