da4b972ef6
'collapse' makes the 'loop' construct apply to the next N nested loops, and 'loop' requires all associated loops be 'for' loops (or range-for). This patch adds this restriction, plus adds a number of infrastructure changes to permit some of the other restrictions in the future to be implemented. 'collapse' also requires that there is not any calls to other directives inside of the collapse region, so this also implements that limitation.
275 lines
7.3 KiB
C++
275 lines
7.3 KiB
C++
// RUN: %clang_cc1 %s -fopenacc -verify
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void only_for_loops() {
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// expected-error@+3{{OpenACC 'loop' construct can only be applied to a 'for' loop}}
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// expected-note@+1{{'loop' construct is here}}
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#pragma acc loop collapse(1)
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while(true);
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// expected-error@+3{{OpenACC 'loop' construct can only be applied to a 'for' loop}}
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// expected-note@+1{{'loop' construct is here}}
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#pragma acc loop collapse(1)
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do{}while(true);
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}
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void only_one_on_loop() {
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// expected-error@+2{{OpenACC 'collapse' clause cannot appear more than once on a 'loop' directive}}
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// expected-note@+1{{previous clause is here}}
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#pragma acc loop collapse(1) collapse(1)
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for(;;);
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}
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constexpr int three() { return 3; }
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constexpr int one() { return 1; }
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constexpr int neg() { return -1; }
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constexpr int zero() { return 0; }
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struct NotConstexpr {
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constexpr NotConstexpr(){};
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operator int(){ return 1; }
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};
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struct ConvertsNegative {
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constexpr ConvertsNegative(){};
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constexpr operator int(){ return -1; }
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};
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struct ConvertsOne{
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constexpr ConvertsOne(){};
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constexpr operator int(){ return 1; }
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};
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struct ConvertsThree{
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constexpr ConvertsThree(){};
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constexpr operator int(){ return 3; }
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};
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template <typename T, int Val>
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void negative_constexpr_templ() {
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// expected-error@+3 2{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to 0}}
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// expected-note@#NCETN1{{in instantiation of function template specialization 'negative_constexpr_templ<int, -1>'}}
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// expected-note@#NCET1{{in instantiation of function template specialization 'negative_constexpr_templ<int, 1>'}}
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#pragma acc loop collapse(T{})
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for(;;)
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for(;;);
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// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
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#pragma acc loop collapse(Val)
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for(;;)
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for(;;);
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}
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void negative_constexpr(int i) {
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#pragma acc loop collapse(2)
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for(;;)
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for(;;);
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#pragma acc loop collapse(1)
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for(;;)
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for(;;);
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// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to 0}}
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#pragma acc loop collapse(0)
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for(;;)
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for(;;);
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// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
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#pragma acc loop collapse(-1)
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for(;;)
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for(;;);
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#pragma acc loop collapse(one())
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for(;;)
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for(;;);
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// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to 0}}
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#pragma acc loop collapse(zero())
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for(;;)
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for(;;);
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// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
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#pragma acc loop collapse(neg())
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for(;;)
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for(;;);
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// expected-error@+1{{OpenACC 'collapse' clause loop count must be a constant expression}}
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#pragma acc loop collapse(NotConstexpr{})
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for(;;)
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for(;;);
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// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
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#pragma acc loop collapse(ConvertsNegative{})
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for(;;)
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for(;;);
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#pragma acc loop collapse(ConvertsOne{})
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for(;;)
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for(;;);
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negative_constexpr_templ<int, -1>(); // #NCETN1
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negative_constexpr_templ<int, 1>(); // #NCET1
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}
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template<typename T, unsigned Three>
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void not_single_loop_templ() {
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T Arr[5];
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(3)
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for(auto x : Arr) {
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for(auto y : Arr){
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do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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}
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(Three)
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for(;;) {
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for(;;){
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do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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}
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#pragma acc loop collapse(Three)
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for(;;) {
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for(;;){
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for(;;){
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do{}while(true);
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}
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}
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}
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(Three)
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for(auto x : Arr) {
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for(auto y: Arr) {
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do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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}
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#pragma acc loop collapse(Three)
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for(auto x : Arr) {
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for(auto y: Arr) {
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for(auto z: Arr) {
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do{}while(true);
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}
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}
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}
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}
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void not_single_loop() {
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not_single_loop_templ<int, 3>(); // expected-note{{in instantiation of function template}}
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(3)
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for(;;) {
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for(;;){
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for(;;);
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}
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while(true); // expected-error{{while loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(3)
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for(;;) {
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for(;;){
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for(;;);
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}
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do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(3)
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for(;;) {
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for(;;){
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while(true); // expected-error{{while loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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}
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(3)
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for(;;) {
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for(;;){
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do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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}
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#pragma acc loop collapse(2)
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for(;;) {
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for(;;){
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do{}while(true);
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}
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}
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#pragma acc loop collapse(2)
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for(;;) {
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for(;;){
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while(true);
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}
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}
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int Arr[5];
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(3)
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for(auto x : Arr) {
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for(auto y : Arr){
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do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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}
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}
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}
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template<unsigned Two, unsigned Three>
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void no_other_directives() {
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#pragma acc loop collapse(Two)
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for(;;) {
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for (;;) { // last loop associated with the top level.
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#pragma acc loop collapse(Three) // expected-note{{active 'collapse' clause defined here}}
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for(;;) {
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for(;;) {
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// expected-error@+1{{OpenACC 'serial' construct cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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#pragma acc serial
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;
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}
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}
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}
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}
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#pragma acc loop collapse(Two)// expected-note{{active 'collapse' clause defined here}}
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for(;;) {
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for (;;) { // last loop associated with the top level.
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#pragma acc loop collapse(Three)
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for(;;) {
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for(;;) {
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}
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}
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}
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// expected-error@+1{{OpenACC 'serial' construct cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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#pragma acc serial
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;
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}
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}
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void no_other_directives() {
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no_other_directives<2,3>(); // expected-note{{in instantiation of function template specialization}}
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// Ok, not inside the intervening list
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#pragma acc loop collapse(2)
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for(;;) {
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for(;;) {
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#pragma acc data // expected-warning{{OpenACC construct 'data' not yet implemented}}
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}
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}
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// expected-note@+1{{active 'collapse' clause defined here}}
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#pragma acc loop collapse(2)
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for(;;) {
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// expected-error@+1{{OpenACC 'data' construct cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
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#pragma acc data // expected-warning{{OpenACC construct 'data' not yet implemented}}
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for(;;) {
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}
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}
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}
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