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Bytecode: allow better compiler optimization of the main evaluation function 

Use the __restrict__ GCC extension on double* pointers, to avoid aliasing.

NB: the C “restrict” keyword does not exist in C++.
mr#2134
Sébastien Villemot 2023-04-18 17:26:37 +02:00
parent d71db85c71
commit 4313640f80
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GPG Key ID: 2CECE9350ECEBE4A
2 changed files with 2 additions and 2 deletions
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2
mex/sources/bytecode/Evaluate.cc
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@ -985,7 +985,7 @@ Evaluate::print_expression(const Evaluate::it_code_type &expr_begin, const optio
}
void
Evaluate::evaluateBlock(int it_, double *y, const double *ya, int y_size, double *x, int nb_row_x, double *params, const double *steady_y, double *u, int Per_u_, double *T, int T_nrows, map<int, double> &TEF, map<pair<int, int>, double> &TEFD, map<tuple<int, int, int>, double> &TEFDD, double *r, double *g1, double *jacob, double *jacob_exo, double *jacob_exo_det, bool evaluate, bool no_derivatives)
Evaluate::evaluateBlock(int it_, double *__restrict__ y, const double *__restrict__ ya, int y_size, double *__restrict__ x, int nb_row_x, double *__restrict__ params, const double *__restrict__ steady_y, double *__restrict__ u, int Per_u_, double *__restrict__ T, int T_nrows, map<int, double> &TEF, map<pair<int, int>, double> &TEFD, map<tuple<int, int, int>, double> &TEFDD, double *__restrict__ r, double *__restrict__ g1, double *__restrict__ jacob, double *__restrict__ jacob_exo, double *__restrict__ jacob_exo_det, bool evaluate, bool no_derivatives)
{
auto it_code { currentBlockBeginning() };
int var{0}, lag{0};

2
mex/sources/bytecode/Evaluate.hh
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@ -77,7 +77,7 @@ private:
protected:
BasicSymbolTable &symbol_table;
void evaluateBlock(int it_, double *y, const double *ya, int y_size, double *x, int nb_row_x, double *params, const double *steady_y, double *u, int Per_u_, double *T, int T_nrows, map<int, double> &TEF, map<pair<int, int>, double> &TEFD, map<tuple<int, int, int>, double> &TEFDD, double *r, double *g1, double *jacob, double *jacob_exo, double *jacob_exo_det, bool evaluate, bool no_derivatives);
void evaluateBlock(int it_, double *__restrict__ y, const double *__restrict__ ya, int y_size, double *__restrict__ x, int nb_row_x, double *__restrict__ params, const double *__restrict__ steady_y, double *__restrict__ u, int Per_u_, double *__restrict__ T, int T_nrows, map<int, double> &TEF, map<pair<int, int>, double> &TEFD, map<tuple<int, int, int>, double> &TEFDD, double *__restrict__ r, double *__restrict__ g1, double *__restrict__ jacob, double *__restrict__ jacob_exo, double *__restrict__ jacob_exo_det, bool evaluate, bool no_derivatives);
bool steady_state;