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a504759afd
Ensure that code for generic `d_primal::<T>` is generated even if `primal::<T>` is never used. - incorporate feedback from @ZuseZ4
43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
//@ compile-flags: -Zautodiff=Enable -Zautodiff=NoPostopt -C opt-level=3 -Clto=fat
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//@ no-prefer-dynamic
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//@ needs-enzyme
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#![feature(autodiff)]
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use std::autodiff::autodiff;
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#[autodiff(d_square, Reverse, Duplicated, Active)]
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fn square<T: std::ops::Mul<Output = T> + Copy>(x: &T) -> T {
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*x * *x
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}
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// Ensure that `d_square::<f64>` code is generated even if `square::<f64>` was never called
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//
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// CHECK: ; generic::square
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// CHECK-NEXT: ; Function Attrs:
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// CHECK-NEXT: define internal {{.*}} double
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// CHECK-NEXT: start:
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// CHECK-NOT: ret
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// CHECK: fmul double
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// Ensure that `d_square::<f32>` code is generated
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//
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// CHECK: ; generic::square
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// CHECK-NEXT: ; Function Attrs: {{.*}}
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// CHECK-NEXT: define internal {{.*}} float
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// CHECK-NEXT: start:
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// CHECK-NOT: ret
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// CHECK: fmul float
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fn main() {
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let xf32: f32 = std::hint::black_box(3.0);
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let xf64: f64 = std::hint::black_box(3.0);
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let outputf32 = square::<f32>(&xf32);
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assert_eq!(9.0, outputf32);
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let mut df_dxf64: f64 = std::hint::black_box(0.0);
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let output_f64 = d_square::<f64>(&xf64, &mut df_dxf64, 1.0);
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assert_eq!(6.0, df_dxf64);
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}
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