43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
// compile-flags: -O -C no-prepopulate-passes
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#![crate_type = "lib"]
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// CHECK-LABEL: @test
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#[no_mangle]
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pub fn test() {
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let a = 0;
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&a; // keep variable in an alloca
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// CHECK: [[S_a:%[0-9]+]] = bitcast i32* %a to i8*
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// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S_a]])
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{
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let b = &Some(a);
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&b; // keep variable in an alloca
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// CHECK: [[S_b:%[0-9]+]] = bitcast { i32, i32 }** %b to i8*
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// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S_b]])
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// CHECK: [[S__4:%[0-9]+]] = bitcast { i32, i32 }* %_4 to i8*
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// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S__4]])
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// CHECK: [[E__4:%[0-9]+]] = bitcast { i32, i32 }* %_4 to i8*
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// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E__4]])
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// CHECK: [[E_b:%[0-9]+]] = bitcast { i32, i32 }** %b to i8*
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// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E_b]])
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}
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let c = 1;
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&c; // keep variable in an alloca
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// CHECK: [[S_c:%[0-9]+]] = bitcast i32* %c to i8*
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// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S_c]])
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// CHECK: [[E_c:%[0-9]+]] = bitcast i32* %c to i8*
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// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E_c]])
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// CHECK: [[E_a:%[0-9]+]] = bitcast i32* %a to i8*
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// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E_a]])
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}
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