74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
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// RUN: %clang_cc1 -std=c++11 -S -triple armv7-none-eabi -emit-llvm -o - %s | FileCheck %s
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namespace reference {
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struct A {
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int i1, i2;
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};
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void single_init() {
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// No superfluous instructions allowed here, they could be
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// hiding extra temporaries.
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// CHECK: store i32 1, i32*
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// CHECK-NEXT: store i32* %{{.*}}, i32**
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const int &cri2a = 1;
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// CHECK-NEXT: store i32 1, i32*
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// CHECK-NEXT: store i32* %{{.*}}, i32**
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const int &cri1a = {1};
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// CHECK-NEXT: store i32 1, i32*
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int i = 1;
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// CHECK-NEXT: store i32* %{{.*}}, i32**
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int &ri1a = {i};
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// CHECK-NEXT: bitcast
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// CHECK-NEXT: memcpy
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A a{1, 2};
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// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %
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A &ra1a = {a};
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using T = A&;
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// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %
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A &ra1b = T{a};
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// CHECK-NEXT: ret
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}
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void reference_to_aggregate() {
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// CHECK: getelementptr {{.*}}, i32 0, i32 0
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// CHECK-NEXT: store i32 1
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// CHECK-NEXT: getelementptr {{.*}}, i32 0, i32 1
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// CHECK-NEXT: store i32 2
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// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %{{.*}}, align
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const A &ra1{1, 2};
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// CHECK-NEXT: getelementptr inbounds [3 x i32]* %{{.*}}, i{{32|64}} 0, i{{32|64}} 0
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// CHECK-NEXT: store i32 1
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// CHECK-NEXT: getelementptr inbounds i32* %{{.*}}, i{{32|64}} 1
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// CHECK-NEXT: store i32 2
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// CHECK-NEXT: getelementptr inbounds i32* %{{.*}}, i{{32|64}} 1
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// CHECK-NEXT: store i32 3
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// CHECK-NEXT: store [3 x i32]* %{{.*}}, [3 x i32]** %{{.*}}, align
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const int (&arrayRef)[] = {1, 2, 3};
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// CHECK-NEXT: ret
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}
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struct B {
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B();
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~B();
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};
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void single_init_temp_cleanup()
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{
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// Ensure lifetime extension.
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// CHECK: call %"struct.reference::B"* @_ZN9reference1BC1Ev
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// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %
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const B &rb{ B() };
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// CHECK: call %"struct.reference::B"* @_ZN9reference1BD1Ev
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}
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}
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