mirror of https://github.com/rust-lang/rust.git
76 lines
1.5 KiB
Rust
76 lines
1.5 KiB
Rust
//@ test-mir-pass: DataflowConstProp
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// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
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use std::marker::PhantomData;
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use std::mem::offset_of;
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struct Alpha {
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x: u8,
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y: u16,
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z: Beta,
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}
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struct Beta(u8, u8);
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struct Gamma<T> {
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x: u8,
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y: u16,
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_t: T,
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}
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#[repr(C)]
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struct Delta<T> {
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_phantom: PhantomData<T>,
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x: u8,
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y: u16,
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}
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// EMIT_MIR offset_of.concrete.DataflowConstProp.diff
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// CHECK-LABEL: fn concrete(
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fn concrete() {
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// CHECK: debug x => [[x:_.*]];
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// CHECK: debug y => [[y:_.*]];
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// CHECK: debug z0 => [[z0:_.*]];
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// CHECK: debug z1 => [[z1:_.*]];
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// CHECK: [[x]] = const 4_usize
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let x = offset_of!(Alpha, x);
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// CHECK: [[y]] = const 0_usize
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let y = offset_of!(Alpha, y);
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// CHECK: [[z0]] = const 2_usize
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let z0 = offset_of!(Alpha, z.0);
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// CHECK: [[z1]] = const 3_usize
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let z1 = offset_of!(Alpha, z.1);
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}
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// EMIT_MIR offset_of.generic.DataflowConstProp.diff
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// CHECK-LABEL: fn generic(
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fn generic<T>() {
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// CHECK: debug gx => [[gx:_.*]];
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// CHECK: debug gy => [[gy:_.*]];
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// CHECK: debug dx => [[dx:_.*]];
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// CHECK: debug dy => [[dy:_.*]];
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// CHECK: [[gx]] = OffsetOf(Gamma<T>, [(0, 0)]);
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let gx = offset_of!(Gamma<T>, x);
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// CHECK: [[gy]] = OffsetOf(Gamma<T>, [(0, 1)]);
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let gy = offset_of!(Gamma<T>, y);
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// CHECK: [[dx]] = const 0_usize
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let dx = offset_of!(Delta<T>, x);
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// CHECK: [[dy]] = const 2_usize
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let dy = offset_of!(Delta<T>, y);
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}
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fn main() {
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concrete();
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generic::<()>();
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}
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