forked from OSchip/llvm-project
66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
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namespace foo {
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// CHECK-NOT: @a = global i32
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extern "C" int a;
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// CHECK-NOT: @_ZN3foo1bE = global i32
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extern int b;
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// CHECK: @_ZN3foo1cE = global i32
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int c = 5;
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// CHECK-NOT: @_ZN3foo1dE
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extern "C" struct d;
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}
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namespace test1 {
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namespace {
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struct X {};
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}
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extern "C" {
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// CHECK: @test1_b = global
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X test1_b = X();
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}
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void *use = &test1_b;
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// CHECK: @_ZN5test13useE = global
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}
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namespace test2 {
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namespace {
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struct X {};
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}
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// CHECK: @test2_b = global
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extern "C" X test2_b;
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X test2_b;
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}
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extern "C" {
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static int unused_var;
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static int unused_fn() { return 0; }
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__attribute__((used)) static int internal_var;
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__attribute__((used)) static int internal_fn() { return 0; }
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__attribute__((used)) static int duplicate_internal_var;
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__attribute__((used)) static int duplicate_internal_fn() { return 0; }
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namespace N {
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__attribute__((used)) static int duplicate_internal_var;
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__attribute__((used)) static int duplicate_internal_fn() { return 0; }
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}
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// CHECK: @llvm.used = appending global {{.*}} @internal_var {{.*}} @internal_fn
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// CHECK-NOT: @unused
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// CHECK-NOT: @duplicate_internal
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// CHECK: @internal_var = alias internal i32* @_Z12internal_var
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// CHECK-NOT: @unused
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// CHECK-NOT: @duplicate_internal
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// CHECK: @internal_fn = alias internal i32 ()* @_Z11internal_fnv
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// CHECK-NOT: @unused
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// CHECK-NOT: @duplicate_internal
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}
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