tests/codegen/target-feature-overrides.rs

   1 // revisions: COMPAT INCOMPAT
   2 // needs-llvm-components: x86
   3 // compile-flags: --target=x86_64-unknown-linux-gnu -Copt-level=3
   4 // [COMPAT] compile-flags: -Ctarget-feature=+avx2,+avx
   5 // [INCOMPAT] compile-flags: -Ctarget-feature=-avx2,-avx
   6
   7 // See also tests/assembly/target-feature-multiple.rs
   8 #![feature(no_core, lang_items)]
   9 #![crate_type = "lib"]
  10 #![no_core]
  11
  12
  13 #[lang = "sized"]
  14 trait Sized {}
  15 #[lang = "copy"]
  16 trait Copy {}
  17
  18 extern "C" {
  19     fn peach() -> u32;
  20 }
  21
  22 #[inline]
  23 #[target_feature(enable = "avx")]
  24 #[no_mangle]
  25 pub unsafe fn apple() -> u32 {
  26 // CHECK-LABEL: @apple()
  27 // CHECK-SAME: [[APPLEATTRS:#[0-9]+]] {
  28 // CHECK: {{.*}}call{{.*}}@peach
  29     peach()
  30 }
  31
  32 // target features same as global
  33 #[no_mangle]
  34 pub unsafe fn banana() -> u32 {
  35 // CHECK-LABEL: @banana()
  36 // CHECK-SAME: [[BANANAATTRS:#[0-9]+]] {
  37 // COMPAT: {{.*}}call{{.*}}@peach
  38 // INCOMPAT: {{.*}}call{{.*}}@apple
  39     apple() // Compatible for inline in COMPAT revision and can't be inlined in INCOMPAT
  40 }
  41
  42 // CHECK: attributes [[APPLEATTRS]]
  43 // COMPAT-SAME: "target-features"="+avx2,+avx,+avx"
  44 // INCOMPAT-SAME: "target-features"="-avx2,-avx,+avx"
  45 // CHECK: attributes [[BANANAATTRS]]
  46 // COMPAT-SAME: "target-features"="+avx2,+avx"
  47 // INCOMPAT-SAME: "target-features"="-avx2,-avx"