https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86443
Bug ID: 86443 Summary: ICEs on #pragma omp distribute parallel for with class iterators Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: jakub at gcc dot gnu.org Target Milestone: --- // { dg-do run } // { dg-additional-options "-std=c++17" } typedef __PTRDIFF_TYPE__ ptrdiff_t; extern "C" void abort (); #pragma omp declare target template <typename T> class I { public: typedef ptrdiff_t difference_type; I (); ~I (); I (T *); I (const I &); T &operator * (); T *operator -> (); T &operator [] (const difference_type &) const; I &operator = (const I &); I &operator ++ (); I operator ++ (int); I &operator -- (); I operator -- (int); I &operator += (const difference_type &); I &operator -= (const difference_type &); I operator + (const difference_type &) const; I operator - (const difference_type &) const; template <typename S> friend bool operator == (I<S> &, I<S> &); template <typename S> friend bool operator == (const I<S> &, const I<S> &); template <typename S> friend bool operator < (I<S> &, I<S> &); template <typename S> friend bool operator < (const I<S> &, const I<S> &); template <typename S> friend bool operator <= (I<S> &, I<S> &); template <typename S> friend bool operator <= (const I<S> &, const I<S> &); template <typename S> friend bool operator > (I<S> &, I<S> &); template <typename S> friend bool operator > (const I<S> &, const I<S> &); template <typename S> friend bool operator >= (I<S> &, I<S> &); template <typename S> friend bool operator >= (const I<S> &, const I<S> &); template <typename S> friend typename I<S>::difference_type operator - (I<S> &, I<S> &); template <typename S> friend typename I<S>::difference_type operator - (const I<S> &, const I<S> &); template <typename S> friend I<S> operator + (typename I<S>::difference_type , const I<S> &); private: T *p; }; template <typename T> I<T>::I () : p (0) {} template <typename T> I<T>::~I () {} template <typename T> I<T>::I (T *x) : p (x) {} template <typename T> I<T>::I (const I &x) : p (x.p) {} template <typename T> T &I<T>::operator * () { return *p; } template <typename T> T *I<T>::operator -> () { return p; } template <typename T> T &I<T>::operator [] (const difference_type &x) const { return p[x]; } template <typename T> I<T> &I<T>::operator = (const I &x) { p = x.p; return *this; } template <typename T> I<T> &I<T>::operator ++ () { ++p; return *this; } template <typename T> I<T> I<T>::operator ++ (int) { return I (p++); } template <typename T> I<T> &I<T>::operator -- () { --p; return *this; } template <typename T> I<T> I<T>::operator -- (int) { return I (p--); } template <typename T> I<T> &I<T>::operator += (const difference_type &x) { p += x; return *this; } template <typename T> I<T> &I<T>::operator -= (const difference_type &x) { p -= x; return *this; } template <typename T> I<T> I<T>::operator + (const difference_type &x) const { return I (p + x); } template <typename T> I<T> I<T>::operator - (const difference_type &x) const { return I (p - x); } template <typename T> bool operator == (I<T> &x, I<T> &y) { return x.p == y.p; } template <typename T> bool operator == (const I<T> &x, const I<T> &y) { return x.p == y.p; } template <typename T> bool operator != (I<T> &x, I<T> &y) { return !(x == y); } template <typename T> bool operator != (const I<T> &x, const I<T> &y) { return !(x == y); } template <typename T> bool operator < (I<T> &x, I<T> &y) { return x.p < y.p; } template <typename T> bool operator < (const I<T> &x, const I<T> &y) { return x.p < y.p; } template <typename T> bool operator <= (I<T> &x, I<T> &y) { return x.p <= y.p; } template <typename T> bool operator <= (const I<T> &x, const I<T> &y) { return x.p <= y.p; } template <typename T> bool operator > (I<T> &x, I<T> &y) { return x.p > y.p; } template <typename T> bool operator > (const I<T> &x, const I<T> &y) { return x.p > y.p; } template <typename T> bool operator >= (I<T> &x, I<T> &y) { return x.p >= y.p; } template <typename T> bool operator >= (const I<T> &x, const I<T> &y) { return x.p >= y.p; } template <typename T> typename I<T>::difference_type operator - (I<T> &x, I<T> &y) { return x.p - y.p; } template <typename T> typename I<T>::difference_type operator - (const I<T> &x, const I<T> &y) { return x.p - y.p; } template <typename T> I<T> operator + (typename I<T>::difference_type x, const I<T> &y) { return I<T> (x + y.p); } template <typename T> class J { public: J(const I<T> &x, const I<T> &y) : b (x), e (y) {} const I<T> &begin (); const I<T> &end (); private: I<T> b, e; }; template <typename T> const I<T> &J<T>::begin () { return b; } template <typename T> const I<T> &J<T>::end () { return e; } int a[2000]; int results[2000]; template <typename T> void baz (I<T> &i) { if (*i < 0 || *i >= 2000) abort (); results[*i]++; } void baz (int i) { if (i < 0 || i >= 2000) abort (); results[i]++; } void qux (I<int> &i) { if (*i != 1931) abort (); } void f1 (J<int> j) { #pragma omp distribute parallel for default(none) for (I<int> i = j.begin (); i < j.end (); i += 3) baz (*i); } void f2 (J<int> j) { I<int> i; #pragma omp distribute parallel for default(none) for (i = j.begin (); i < j.end (); ++i) baz (*i); } template <int N> void f3 (J<int> j) { #pragma omp distribute parallel for default(none) for (I<int> i = j.begin (); i < j.end (); i += 6) baz (*i); } template <int N> void f4 (J<int> j) { I<int> i; #pragma omp distribute parallel for default(none) for (i = j.begin (); i < j.end (); i += 9) baz (*i); } template <typename T> void f5 (J<T> j) { #pragma omp distribute parallel for default(none) for (I<T> i = j.begin (); i < j.end (); i += 4) baz (*i); } template <typename T> void f6 (J<T> j) { I<T> i; #pragma omp distribute parallel for default(none) for (i = j.begin (); i < j.end (); i += 7) baz (*i); } #pragma omp end declare target #define check(expr) \ for (int i = 0; i < 2000; i++) \ if (expr) \ { \ if (results[i] != 1) \ abort (); \ results[i] = 0; \ } \ else if (results[i]) \ abort () int main () { int a[2000]; for (int i = 0; i < 2000; i++) a[i] = i; #pragma omp target data map (to: a) { #pragma omp target teams map (tofrom: results) { J<int> j (&a[75], &a[1945]); f1 (j); } check (i >= 75 && i < 1945 && (i - 75) % 3 == 0); #pragma omp target teams map (tofrom: results) { J<int> j (&a[63], &a[1949]); f2 (j); } check (i >= 63 && i < 1949); #pragma omp target teams map (tofrom: results) { J<int> j (&a[58], &a[1979]); f3 <2> (j); } check (i >= 58 && i < 1979 && (i - 58) % 6 == 0); #pragma omp target teams map (tofrom: results) { J<int> j (&a[59], &a[1981]); f4 <9> (j); } check (i >= 59 && i < 1981 && (i - 59) % 9 == 0); #pragma omp target teams map (tofrom: results) { J<int> j (&a[52], &a[1972]); f5 (j); } check (i >= 52 && i < 1972 && (i - 52) % 4 == 0); #pragma omp target teams map (tofrom: results) { J<int> j (&a[31], &a[1827]); f6 (j); } check (i >= 31 && i < 1827 && (i - 31) % 7 == 0); } } ICEs with -fopenmp: for-25.C: In function ‘void f1(J<int>)’: for-25.C:121:9: internal compiler error: in gimplify_omp_for, at gimplify.c:9621 #pragma omp distribute parallel for default(none) ^~~ 0xee8310 gimplify_omp_for ../../gcc/gimplify.c:9621 0xef325c gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc/gimplify.c:11921 0xed9b0e gimplify_stmt(tree_node**, gimple**) ../../gcc/gimplify.c:6618 0xec4cf0 gimplify_and_add(tree_node*, gimple**) ../../gcc/gimplify.c:441 0x8b0509 cp_gimplify_omp_for ../../gcc/cp/cp-gimplify.c:401