src/test/codegen/optimize-attr-1.rs

   1 // revisions: NO-OPT SIZE-OPT SPEED-OPT
   2 //[NO-OPT] compile-flags: -Copt-level=0 -Ccodegen-units=1
   3 //[SIZE-OPT] compile-flags: -Copt-level=s -Ccodegen-units=1
   4 //[SPEED-OPT] compile-flags: -Copt-level=3 -Ccodegen-units=1
   5
   6 #![feature(optimize_attribute)]
   7 #![crate_type="rlib"]
   8
   9 // CHECK-LABEL: define i32 @nothing
  10 // CHECK-SAME: [[NOTHING_ATTRS:#[0-9]+]]
  11 // NO-OPT: ret i32 %1
  12 // SIZE-OPT: ret i32 4
  13 // SPEEC-OPT: ret i32 4
  14 #[no_mangle]
  15 pub fn nothing() -> i32 {
  16     2 + 2
  17 }
  18
  19 // CHECK-LABEL: define i32 @size
  20 // CHECK-SAME: [[SIZE_ATTRS:#[0-9]+]]
  21 // NO-OPT: ret i32 %1
  22 // SIZE-OPT: ret i32 6
  23 // SPEED-OPT: ret i32 6
  24 #[optimize(size)]
  25 #[no_mangle]
  26 pub fn size() -> i32 {
  27     3 + 3
  28 }
  29
  30 // CHECK-LABEL: define i32 @speed
  31 // NO-OPT-SAME: [[NOTHING_ATTRS]]
  32 // SPEED-OPT-SAME: [[NOTHING_ATTRS]]
  33 // SIZE-OPT-SAME: [[SPEED_ATTRS:#[0-9]+]]
  34 // NO-OPT: ret i32 %1
  35 // SIZE-OPT: ret i32 8
  36 // SPEED-OPT: ret i32 8
  37 #[optimize(speed)]
  38 #[no_mangle]
  39 pub fn speed() -> i32 {
  40     4 + 4
  41 }
  42
  43 // NO-OPT-DAG: attributes [[SIZE_ATTRS]] = {{.*}}minsize{{.*}}optsize{{.*}}
  44 // SPEED-OPT-DAG: attributes [[SIZE_ATTRS]] = {{.*}}minsize{{.*}}optsize{{.*}}
  45 // SIZE-OPT-DAG: attributes [[NOTHING_ATTRS]] = {{.*}}optsize{{.*}}
  46 // SIZE-OPT-DAG: attributes [[SIZE_ATTRS]] = {{.*}}minsize{{.*}}optsize{{.*}}
  47
  48 // SIZE-OPT: attributes [[SPEED_ATTRS]]
  49 // SIZE-OPT-NOT: minsize
  50 // SIZE-OPT-NOT: optsize