165 lines
6.1 KiB
C++
165 lines
6.1 KiB
C++
// RUN: %clang_cc1 -I %S/Inputs -x c++ -std=c++11 -triple x86_64-unknown-linux -emit-llvm -O2 < %s | FileCheck %s
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// RUN: %clang_cc1 -I %S/Inputs -x c++ -std=c++11 -triple x86_64-unknown-linux -emit-llvm -Os < %s | FileCheck %s
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// RUN: %clang_cc1 -I %S/Inputs -x c++ -std=c++11 -triple x86_64-unknown-linux -emit-llvm -Oz < %s | FileCheck %s
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#pragma clang optimize off
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// This is a macro definition and therefore its text is not present after
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// preprocessing. The pragma has no effect here.
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#define CREATE_FUNC(name) \
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int name (int param) { \
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return param; \
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} \
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// This is a declaration and therefore it is not decorated with `optnone`.
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extern int foo(int a, int b);
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// CHECK-DAG: @_Z3fooii{{.*}} [[ATTRFOO:#[0-9]+]]
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// This is a definition and therefore it will be decorated with `optnone`.
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int bar(int x, int y) {
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for(int i = 0; i < x; ++i)
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y += x;
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return y + foo(x, y);
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}
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// CHECK-DAG: @_Z3barii{{.*}} [[ATTRBAR:#[0-9]+]]
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// The function "int created (int param)" created by the macro invocation
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// is also decorated with the `optnone` attribute because it is within a
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// region of code affected by the functionality (not because of the position
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// of the macro definition).
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CREATE_FUNC (created)
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// CHECK-DAG: @_Z7createdi{{.*}} [[ATTRCREATED:#[0-9]+]]
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class MyClass {
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public:
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// The declaration of the method is not decorated with `optnone`.
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int method(int blah);
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};
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// The definition of the method instead is decorated with `optnone`.
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int MyClass::method(int blah) {
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return blah + 1;
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}
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// CHECK-DAG: @_ZN7MyClass6methodEi{{.*}} [[ATTRMETHOD:#[0-9]+]]
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// A template declaration will not be decorated with `optnone`.
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template <typename T> T twice (T param);
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// The template definition will be decorated with the attribute `optnone`.
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template <typename T> T thrice (T param) {
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return 3 * param;
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}
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// This function definition will not be decorated with `optnone` because the
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// attribute would conflict with `always_inline`.
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int __attribute__((always_inline)) baz(int z) {
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return foo(z, 2);
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}
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// CHECK-DAG: @_Z3bazi{{.*}} [[ATTRBAZ:#[0-9]+]]
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// This function definition will not be decorated with `optnone` because the
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// attribute would conflict with `minsize`.
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int __attribute__((minsize)) bax(int z) {
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return foo(z, 2);
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}
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// CHECK-DAG: @_Z3baxi{{.*}} [[ATTRBAX:#[0-9]+]]
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#pragma clang optimize on
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// The function "int wombat(int param)" created by the macro is not
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// decorated with `optnone`, because the pragma applies its effects only
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// after preprocessing. The position of the macro definition is not
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// relevant.
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CREATE_FUNC (wombat)
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// CHECK-DAG: @_Z6wombati{{.*}} [[ATTRWOMBAT:#[0-9]+]]
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// This instantiation of the "twice" template function with a "float" type
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// will not have an `optnone` attribute because the template declaration was
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// not affected by the pragma.
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float container (float par) {
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return twice(par);
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}
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// CHECK-DAG: @_Z9containerf{{.*}} [[ATTRCONTAINER:#[0-9]+]]
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// CHECK-DAG: @_Z5twiceIfET_S0_{{.*}} [[ATTRTWICE:#[0-9]+]]
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// This instantiation of the "thrice" template function with a "float" type
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// will have an `optnone` attribute because the template definition was
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// affected by the pragma.
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float container2 (float par) {
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return thrice(par);
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}
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// CHECK-DAG: @_Z10container2f{{.*}} [[ATTRCONTAINER2:#[0-9]+]]
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// CHECK-DAG: @_Z6thriceIfET_S0_{{.*}} [[ATTRTHRICEFLOAT:#[0-9]+]]
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// A template specialization is a new definition and it will not be
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// decorated with an `optnone` attribute because it is now outside of the
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// affected region.
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template<> int thrice(int par) {
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return (par << 1) + par;
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}
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int container3 (int par) {
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return thrice(par);
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}
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// CHECK-DAG: @_Z10container3i{{.*}} [[ATTRCONTAINER3:#[0-9]+]]
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// CHECK-DAG: @_Z6thriceIiET_S0_{{.*}} [[ATTRTHRICEINT:#[0-9]+]]
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// Test that we can re-open and re-close an "off" region after the first one,
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// and that this works as expected.
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#pragma clang optimize off
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int another_optnone(int x) {
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return x << 1;
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}
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// CHECK-DAG: @_Z15another_optnonei{{.*}} [[ATTRANOTHEROPTNONE:#[0-9]+]]
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#pragma clang optimize on
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int another_normal(int x) {
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return x << 2;
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}
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// CHECK-DAG: @_Z14another_normali{{.*}} [[ATTRANOTHERNORMAL:#[0-9]+]]
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// Test that we can re-open an "off" region by including a header with the
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// pragma and that this works as expected (i.e. the off region "falls through"
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// the end of the header into this file).
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#include <header-with-pragma-optimize-off.h>
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int yet_another_optnone(int x) {
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return x << 3;
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}
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// CHECK-DAG: @_Z19yet_another_optnonei{{.*}} [[ATTRYETANOTHEROPTNONE:#[0-9]+]]
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#pragma clang optimize on
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int yet_another_normal(int x) {
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return x << 4;
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}
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// CHECK-DAG: @_Z18yet_another_normali{{.*}} [[ATTRYETANOTHERNORMAL:#[0-9]+]]
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// Check for both noinline and optnone on each function that should have them.
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// CHECK-DAG: attributes [[ATTRBAR]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
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// CHECK-DAG: attributes [[ATTRCREATED]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
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// CHECK-DAG: attributes [[ATTRMETHOD]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
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// CHECK-DAG: attributes [[ATTRTHRICEFLOAT]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
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// CHECK-DAG: attributes [[ATTRANOTHEROPTNONE]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
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// CHECK-DAG: attributes [[ATTRYETANOTHEROPTNONE]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
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// Check that the other functions do NOT have optnone.
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// CHECK-NOT: attributes [[ATTRFOO]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRBAZ]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRBAX]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRWOMBAT]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRCONTAINER]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRTWICE]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRCONTAINER2]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRCONTAINER3]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRTHRICEINT]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRANOTHERNORMAL]] = { {{.*}}optnone{{.*}} }
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// CHECK-NOT: attributes [[ATTRYETANOTHERNORMAL]] = { {{.*}}optnone{{.*}} }
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