24 lines
953 B
Rust
24 lines
953 B
Rust
// compile-flags: --crate-type=lib -O -Cdebuginfo=2 -Cno-prepopulate-passes -Zmir-enable-passes=-ScalarReplacementOfAggregates
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// MIR SROA will decompose the closure
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#![feature(stmt_expr_attributes)]
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pub struct S([usize; 8]);
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#[no_mangle]
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pub fn outer_function(x: S, y: S) -> usize {
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(#[inline(always)]|| {
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let _z = x;
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y.0[0]
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})()
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}
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// Check that we do not attempt to load from the spilled arg before it is assigned to
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// when generating debuginfo.
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// CHECK-LABEL: @outer_function
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// CHECK: [[spill:%.*]] = alloca %"[closure@{{.*.rs}}:9:23: 9:25]"
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// CHECK-NOT: [[ptr_tmp:%.*]] = getelementptr inbounds %"[closure@{{.*.rs}}:9:23: 9:25]", ptr [[spill]]
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// CHECK-NOT: [[load:%.*]] = load ptr, ptr
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// CHECK: call void @llvm.lifetime.start{{.*}}({{.*}}, ptr [[spill]])
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// CHECK: [[inner:%.*]] = getelementptr inbounds %"{{.*}}", ptr [[spill]]
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// CHECK: call void @llvm.memcpy{{.*}}(ptr {{align .*}} [[inner]], ptr {{align .*}} %x
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