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// Bug c++/83871 - wrong code due to attributes on distinct template
// specializations
// Test to verify that an explicit template specifialization does not
// "inherit" attributes always_inline or noinline from a primary template
// declared with either. The test disables optimization to verify that
// always_inline forces inlining.
// { dg-do compile }
// { dg-options "-O0 -Wall -fdump-tree-optimized" }
enum Special { };
template <class T>
inline void __attribute__ ((always_inline))
falways_inline_none ()
{
// Primary template should always be inlined, even without optimization.
asm (""); // induce a no-op "side-effect"
}
template <>
inline void
falways_inline_none<Special>()
{
// The specialization should not be inlined without optimization, even
// though it's declared inline.
asm ("");
}
// Verify that a call to the primary is inlined but one to
// the explicit specialization is not.
void test_elim_primary_1 (void)
{
// Should be inlined.
falways_inline_none<void>();
// { dg-final { scan-tree-dump-not "falways_inline_none<void> *\\(\\)" "optimized" } }
}
void test_keep_special_1 (void)
{
// Should not be inlined.
falways_inline_none<Special>();
// { dg-final { scan-tree-dump-times "falways_inline_none<Special> *\\(\\);" 1 "optimized" } }
}
template <class T>
inline void __attribute__ ((always_inline))
falways_inline_noinline ()
{
asm (""); // induce a no-op "side-effect"
}
template <>
void __attribute__ ((noinline))
falways_inline_noinline<Special>() { asm (""); }
// Verify that a call to the primary is inlined but one to
// the explicit specialization is not.
void test_elim_primary_2 (void)
{
falways_inline_noinline<void>();
// { dg-final { scan-tree-dump-not "falways_inline_noinline<void> *\\(\\)" "optimized" } }
}
void test_keep_special_2 (void)
{
falways_inline_noinline<Special>();
// { dg-final { scan-tree-dump-times "falways_inline_noinline<Special> *\\(\\);" 1 "optimized" } }
}
template <class T>
inline void
fnone_always_inline ()
{
asm (""); // induce a no-op "side-effect"
}
template <>
inline void __attribute__ ((always_inline))
fnone_always_inline<Special>() { asm (""); }
// Verify that a call to the primary is not inlined but one to
// the explicit specialization is.
void test_keep_primary_3 (void)
{
fnone_always_inline<void>();
// { dg-final { scan-tree-dump-times "fnone_always_inline<void> *\\(\\);" 1 "optimized" } }
}
void test_elim_special_3 (void)
{
fnone_always_inline<Special>();
// { dg-final { scan-tree-dump-not "fnone_always_inline<Special> *\\(\\);" "optimized" } }
}
template <class T>
void __attribute__ ((noinline))
fnoinline_always_inline ()
{
asm (""); // induce a no-op "side-effect"
}
template <>
inline void __attribute__ ((always_inline))
fnoinline_always_inline<Special>() // { dg-bogus "follows declaration" }
{
asm ("");
}
// Verify that a call to the primary is not inlined but one to
// the explicit specialization is.
void test_keep_primary_4 (void)
{
fnoinline_always_inline<void>();
// { dg-final { scan-tree-dump-times "fnoinline_always_inline<void> *\\(\\);" 1 "optimized" } }
}
void test_elim_special_4 (void)
{
fnoinline_always_inline<Special>();
// { dg-final { scan-tree-dump-not "fnoinline_always_inline<Special> *\\(\\);" "optimized" } }
}
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