forked from OSchip/llvm-project
105 lines
2.8 KiB
C++
105 lines
2.8 KiB
C++
// RUN: %clang_cc1 %s -triple %itanium_abi_triple -std=c++11 -emit-llvm -o - | FileCheck %s
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// Test optnone on template instantiations.
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//-- Effect of optnone on generic add template function.
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template <typename T> T template_normal(T a)
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{
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return a + a;
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}
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template <typename T> __attribute__((optnone)) T template_optnone(T a)
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{
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return a + a + a;
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}
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// This function should cause instantiations of each template, one marked
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// with the 'optnone' attribute.
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int container(int i)
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{
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return template_normal<int>(i) + template_optnone<int>(i);
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}
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// CHECK: @_Z15template_normalIiET_S0_({{.*}}) [[NORMAL:#[0-9]+]]
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// CHECK: @_Z16template_optnoneIiET_S0_({{.*}}) [[OPTNONE:#[0-9]+]]
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//-- Effect of optnone on a partial specialization.
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// FIRST TEST: a method becomes marked with optnone in the specialization.
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template <typename T, typename U> class template_normal_base {
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public:
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T method(T t, U u)
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{
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return t + static_cast<T>(u);
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}
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};
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template <typename U> class template_normal_base<int, U>
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{
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public:
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__attribute__((optnone)) int method (int t, U u)
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{
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return t - static_cast<int>(u);
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}
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};
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// This function should cause an instantiation of the full template (whose
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// method is not marked optnone) and an instantiation of the partially
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// specialized template (whose method is marked optnone).
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void container2()
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{
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int y = 2;
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float z = 3.0;
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template_normal_base<float, int> class_normal;
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template_normal_base<int, float> class_optnone;
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float r1 = class_normal.method(z, y);
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float r2 = class_optnone.method(y, z);
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}
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// CHECK: @_ZN20template_normal_baseIfiE6methodEfi({{.*}}) [[NORMAL]]
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// CHECK: @_ZN20template_normal_baseIifE6methodEif({{.*}}) [[OPTNONE]]
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//-- Effect of optnone on a partial specialization.
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// SECOND TEST: a method loses optnone in the specialization.
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template <typename T, typename U> class template_optnone_base {
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public:
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__attribute__((optnone)) T method(T t, U u)
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{
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return t + static_cast<T>(u);
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}
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};
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template <typename U> class template_optnone_base<int, U>
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{
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public:
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int method (int t, U u)
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{
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return t - static_cast<int>(u);
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}
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};
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// This function should cause an instantiation of the full template (whose
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// method is marked optnone) and an instantiation of the partially
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// specialized template (whose method is not marked optnone).
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void container3()
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{
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int y = 2;
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float z = 3.0;
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template_optnone_base<float, int> class_optnone;
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template_optnone_base<int, float> class_normal;
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float r1 = class_optnone.method(z, y);
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float r2 = class_normal.method(y, z);
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}
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// CHECK: @_ZN21template_optnone_baseIfiE6methodEfi({{.*}}) [[OPTNONE]]
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// CHECK: @_ZN21template_optnone_baseIifE6methodEif({{.*}}) [[NORMAL]]
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// CHECK: attributes [[NORMAL]] =
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// CHECK-NOT: optnone
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// CHECK: attributes [[OPTNONE]] = {{.*}} optnone
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