diff options
Diffstat (limited to 'gcc/fortran/match.c')
| -rw-r--r-- | gcc/fortran/match.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/gcc/fortran/match.c b/gcc/fortran/match.c index 2a364478530..0a173b86ea0 100644 --- a/gcc/fortran/match.c +++ b/gcc/fortran/match.c @@ -899,6 +899,39 @@ cleanup: } +/* We try to match an easy arithmetic IF statement. This only happens + when just after having encountered a simple IF statement. This code + is really duplicate with parts of the gfc_match_if code, but this is + *much* easier. */ +static match +match_arithmetic_if (void) +{ + gfc_st_label *l1, *l2, *l3; + gfc_expr *expr; + match m; + + m = gfc_match (" ( %e ) %l , %l , %l%t", &expr, &l1, &l2, &l3); + if (m != MATCH_YES) + return m; + + if (gfc_reference_st_label (l1, ST_LABEL_TARGET) == FAILURE + || gfc_reference_st_label (l2, ST_LABEL_TARGET) == FAILURE + || gfc_reference_st_label (l3, ST_LABEL_TARGET) == FAILURE) + { + gfc_free_expr (expr); + return MATCH_ERROR; + } + + new_st.op = EXEC_ARITHMETIC_IF; + new_st.expr = expr; + new_st.label = l1; + new_st.label2 = l2; + new_st.label3 = l3; + + return MATCH_YES; +} + + /* The IF statement is a bit of a pain. First of all, there are three forms of it, the simple IF, the IF that starts a block and the arithmetic IF. @@ -1036,6 +1069,7 @@ gfc_match_if (gfc_statement * if_type) match ("exit", gfc_match_exit, ST_EXIT) match ("forall", match_simple_forall, ST_FORALL) match ("go to", gfc_match_goto, ST_GOTO) + match ("if", match_arithmetic_if, ST_ARITHMETIC_IF) match ("inquire", gfc_match_inquire, ST_INQUIRE) match ("nullify", gfc_match_nullify, ST_NULLIFY) match ("open", gfc_match_open, ST_OPEN) @@ -1526,7 +1560,6 @@ gfc_match_goto (void) == FAILURE) return MATCH_ERROR; - expr->symtree->n.sym->attr.assign = 1; new_st.op = EXEC_GOTO; new_st.expr = expr; |