31 lines
646 B
C++
31 lines
646 B
C++
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// RUN: %clang_cc1 %s -std=c++11 -emit-llvm -o - -triple=x86_64-linux-gnu | FileCheck %s
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struct AM {
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int f1, f2;
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};
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alignas(8) AM m;
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AM load1() {
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AM am;
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// m is declared to align to 8bytes, so generate load atomic instead
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// of libcall.
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// CHECK-LABEL: @_Z5load1v
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// CHECK: load atomic {{.*}} monotonic
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__atomic_load(&m, &am, 0);
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return am;
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}
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struct BM {
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int f1;
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alignas(8) AM f2;
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};
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BM bm;
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AM load2() {
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AM am;
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// BM::f2 is declared to align to 8bytes, so generate load atomic instead
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// of libcall.
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// CHECK-LABEL: @_Z5load2v
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// CHECK: load atomic {{.*}} monotonic
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__atomic_load(&bm.f2, &am, 0);
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return am;
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}
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