mirror of https://github.com/rust-lang/rust
30 lines
787 B
Rust
30 lines
787 B
Rust
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
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//@ test-mir-pass: GVN
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//@ compile-flags: -O
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// EMIT_MIR aggregate.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-NOT: = Add(
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// CHECK: [[x]] = const 1_u8;
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// CHECK-NOT: = Add(
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// CHECK: foo(const 1_u8)
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let x = (0, 1, 2).1 + 0;
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foo(x);
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}
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// Verify that we still propagate if part of the aggregate is not known.
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// EMIT_MIR aggregate.foo.GVN.diff
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fn foo(x: u8) {
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// CHECK-LABEL: fn foo(
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// CHECK: debug first => [[first:_.*]];
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// CHECK: debug second => [[second:_.*]];
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// CHECK-NOT: = Add(
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// CHECK: [[first]] = const 1_i32;
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// CHECK-NOT: = Add(
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// CHECK: [[second]] = const 3_i32;
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let first = (0, x).0 + 1;
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let second = (x, 1).1 + 2;
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}
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