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21 lines
515 B
Rust
21 lines
515 B
Rust
//@ test-mir-pass: GVN
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// Verify that we do not propagate the contents of this mutable static.
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static mut STATIC: u32 = 0x42424242;
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// EMIT_MIR mutable_variable_no_prop.main.GVN.diff
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fn main() {
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// CHECK-LABEL: fn main(
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// CHECK: debug x => [[x:_.*]];
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// CHECK: debug y => [[y:_.*]];
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// CHECK: [[x]] = const 42_u32;
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// CHECK: [[tmp:_.*]] = (*{{_.*}});
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// CHECK: [[x]] = move [[tmp]];
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// CHECK: [[y]] = [[x]];
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let mut x = 42;
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unsafe {
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x = STATIC;
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}
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let y = x;
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}
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