derek.holloway
7502bf64a4
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25 lines
718 B
C++
25 lines
718 B
C++
// RUN: %clang_cc1 -triple i386-unknown-unknown -x c++ -emit-llvm -o - %s | FileCheck %s
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union _u { char a[]; } u = {};
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union _u0 { char a[]; } u0 = {0};
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// CHECK: %union._u = type { [0 x i8] }
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// CHECK: @u = global %union._u zeroinitializer, align 1
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// CHECK: @u0 = global { [1 x i8] } zeroinitializer, align 1
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union { char a[]; } z = {};
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// CHECK: @z = internal global %union.{{.*}} zeroinitializer, align 1
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union { char a[]; } z0 = {0};
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// CHECK: @z0 = internal global { [1 x i8] } zeroinitializer, align 1
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/* C++ requires global anonymous unions have static storage, so we have to
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reference them to keep them in the IR output. */
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char keep(int pick)
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{
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if (pick)
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return z.a[0];
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else
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return z0.a[0];
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}
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