diff --git a/trans-array.c b/trans-array.c index 045c426..302f937 100644 --- a/trans-array.c +++ b/trans-array.c @@ -3919,25 +3919,25 @@ temporary: } -/* Initialize the scalarization loop. Creates the loop variables. Determines - the range of the loop variables. Creates a temporary if required. - Calculates how to transform from loop variables to array indices for each - expression. Also generates code for scalar expressions which have been - moved outside the loop. */ +/* Browse through each array's information from the scalarizer and set the loop + bounds according to the "best" one (per dimension), i.e. the one which + provides the most information (constant bounds, shape, etc). */ -void -gfc_conv_loop_setup (gfc_loopinfo * loop, locus * where) +static void +set_loop_bounds (gfc_loopinfo *loop) { int n, dim, spec_dim; gfc_array_info *info; gfc_array_info *specinfo; - gfc_ss *ss, *tmp_ss; + gfc_ss *ss; tree tmp; - gfc_ss *loopspec[GFC_MAX_DIMENSIONS]; + gfc_ss **loopspec; bool dynamic[GFC_MAX_DIMENSIONS]; mpz_t *cshape; mpz_t i; + loopspec = loop->specloop; + mpz_init (i); for (n = 0; n < loop->dimen; n++) { @@ -4119,6 +4119,26 @@ gfc_conv_loop_setup (gfc_loopinfo * loop, locus * where) loop->from[n] = gfc_index_zero_node; } } + mpz_clear (i); +} + + +static void set_delta (gfc_loopinfo *loop); + + +/* Initialize the scalarization loop. Creates the loop variables. Determines + the range of the loop variables. Creates a temporary if required. + Also generates code for scalar expressions which have been + moved outside the loop. */ + +void +gfc_conv_loop_setup (gfc_loopinfo * loop, locus * where) +{ + gfc_ss *tmp_ss; + tree tmp; + int n; + + set_loop_bounds (loop); /* Add all the scalar code that can be taken out of the loops. This may include calculating the loop bounds, so do it before @@ -4153,15 +4173,31 @@ gfc_conv_loop_setup (gfc_loopinfo * loop, locus * where) } for (n = 0; n < loop->temp_dim; n++) - loopspec[loop->order[n]] = NULL; - - mpz_clear (i); + loop->specloop[loop->order[n]] = NULL; /* For array parameters we don't have loop variables, so don't calculate the translations. */ if (loop->array_parameter) return; + set_delta (loop); +} + + +/* Calculates how to transform from loop variables to array indices for each + array: once loop bounds are chosen, sets the difference (DELTA field) between + loop bounds and array reference bounds, for each array info. */ + +static void +set_delta (gfc_loopinfo *loop) +{ + gfc_ss *ss, **loopspec; + gfc_array_info *info; + tree tmp; + int n, dim; + + loopspec = loop->specloop; + /* Calculate the translation from loop variables to array indices. */ for (ss = loop->ss; ss != gfc_ss_terminator; ss = ss->loop_chain) {