forked from OSchip/llvm-project
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
// RUN: %clang_cc1 < %s -triple i386-mingw32 -fms-extensions -emit-llvm -x c++ | FileCheck %s
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// optnone wins over inlinehint.
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// Test that both func1 and func2 are marked optnone and noinline.
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// Definition with both optnone and inlinehint.
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__attribute__((optnone))
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inline int func1(int a) {
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return a + a + a + a;
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}
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// CHECK: @_Z5func1i({{.*}}) [[OPTNONE:#[0-9]+]]
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// optnone declaration, inlinehint definition.
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__attribute__((optnone))
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int func2(int a);
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inline int func2(int a) {
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return a + a + a + a;
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}
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// CHECK: @_Z5func2i({{.*}}) [[OPTNONE]]
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// Keep alive the definitions of func1 and func2.
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int foo() {
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int val = func1(1);
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return val + func2(2);
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}
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// optnone wins over minsize.
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__attribute__((optnone))
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int func3(int a);
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__attribute__((minsize))
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int func3(int a) {
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return a + a + a + a;
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}
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// Same attribute set as everything else, therefore no 'minsize'.
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// CHECK: @_Z5func3i({{.*}}) [[OPTNONE]]
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// Verify that noreturn is compatible with optnone.
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__attribute__((noreturn))
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extern void exit_from_function();
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__attribute__((noreturn)) __attribute((optnone))
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extern void noreturn_function(int a) { exit_from_function(); }
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// CHECK: @_Z17noreturn_functioni({{.*}}) [[NORETURN:#[0-9]+]]
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// Verify that __declspec(noinline) is compatible with optnone.
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__declspec(noinline) __attribute__((optnone))
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void func4() { return; }
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// CHECK: @_Z5func4v() [[OPTNONE]]
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__declspec(noinline)
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extern void func5();
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__attribute__((optnone))
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void func5() { return; }
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// CHECK: @_Z5func5v() [[OPTNONE]]
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// Verify also that optnone can be used on dllexport functions.
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// Adding attribute optnone on a dllimport function has no effect.
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__attribute__((dllimport))
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__attribute__((optnone))
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int imported_optnone_func(int a);
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__attribute__((dllexport))
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__attribute__((optnone))
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int exported_optnone_func(int a) {
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return imported_optnone_func(a); // use of imported func
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}
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// CHECK: @_Z21exported_optnone_funci({{.*}}) [[OPTNONE]]
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// CHECK: declare dllimport {{.*}} @_Z21imported_optnone_funci({{.*}}) [[DLLIMPORT:#[0-9]+]]
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// CHECK: attributes [[OPTNONE]] = { noinline {{.*}} optnone
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// CHECK: attributes [[NORETURN]] = { noinline noreturn {{.*}} optnone
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// CHECK: attributes [[DLLIMPORT]] =
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// CHECK-NOT: optnone
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