derek.holloway
7502bf64a4
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81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
// RUN: %clang_cc1 -std=c++1y %s -triple x86_64-linux-gnu -emit-llvm -o - | FileCheck %s
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struct A {
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int n = 0;
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const char *p;
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char k = p[n];
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int f();
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int x = f();
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union {
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char c;
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double d = 1.0;
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};
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};
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int f();
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union B {
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int a;
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int f();
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int b = f();
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};
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A a { .p = "foobar" };
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A b { 4, "bazquux", .x = 42, .c = 9 };
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A c { 1, 0, 'A', f(), { 3 } };
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// CHECK: @[[STR_A:.*]] = {{.*}} [7 x i8] c"foobar\00"
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// CHECK: @a ={{.*}} global {{.*}} zeroinitializer
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// @b has a constant initializer
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// CHECK: @[[STR_B:.*]] = {{.*}} [8 x i8] c"bazquux\00"
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// CHECK: @b ={{.*}} global {{.*}} i32 4, {{.*}} @[[STR_B]], i8 117, i32 42, {{.*}} i8 9
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B x;
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B y {};
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B z { 1 };
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// CHECK: @z ={{.*}} global {{.*}} { i32 1 }
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// Brace initialization should initialize the first field even though it is
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// unnamed.
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union C {
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struct {
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int C::*memptr;
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};
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};
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C n{};
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// CHECK: @n ={{.*}} global %union.C { %struct.anon { i64 -1 } }, align 8
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// Initialization of 'a':
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// CHECK: store i32 0, ptr @a
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// CHECK: store ptr @[[STR_A]], ptr getelementptr inbounds nuw (i8, ptr @a, i64 8)
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// CHECK: load ptr, ptr getelementptr inbounds nuw (i8, ptr @a, i64 8)
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// CHECK: load i32, ptr @a
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// CHECK: getelementptr inbounds i8, ptr %{{.*}}, {{.*}} %{{.*}}
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// CHECK: store i8 %{{.*}}, ptr getelementptr inbounds nuw (i8, ptr @a, i64 16)
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// CHECK: call noundef i32 @_ZN1A1fEv({{.*}} @a)
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// CHECK: store i32 %{{.*}}, ptr getelementptr inbounds nuw (i8, ptr @a, i64 20)
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// CHECK: store double 1.000000e+00, ptr getelementptr inbounds nuw (i8, ptr @a, i64 24)
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// No dynamic initialization of 'b':
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// CHECK-NOT: @b
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// Initialization of 'c':
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// CHECK: store i32 1, ptr @c
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// CHECK: store ptr null, ptr getelementptr inbounds nuw (i8, ptr @c, i64 8)
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// CHECK-NOT: load
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// CHECK: store i8 65, ptr getelementptr inbounds nuw (i8, ptr @c, i64 16)
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// CHECK: call noundef i32 @_Z1fv()
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// CHECK: store i32 %{{.*}}, ptr getelementptr inbounds nuw (i8, ptr @c, i64 20)
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// CHECK-NOT: C1Ev
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// CHECK: store i8 3, ptr getelementptr inbounds nuw (i8, ptr @c, i64 24)
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// CHECK: call void @_ZN1BC1Ev({{.*}} @x)
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// CHECK: call noundef i32 @_ZN1B1fEv({{.*}} @y)
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// CHECK: store i32 %{{.*}}, ptr @y
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