procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add comment to indicate tail recursion

Browse source 
My previous change removed an unreachable break; there (an
unreachable continue; would have been more to the point).  The
following re-adds a comment explaining that WALK_SUBEXPR_TAIL
does not fall through but tail recurses.

2021-11-30  Richard Biener  <rguenther@suse.de>

gcc/fortran/
	* frontend-passes.c (gfc_expr_walker): Add comment to
	indicate tail recursion.
This commit is contained in:
Richard Biener 2021-11-30 15:25:17 +01:00
parent e43b15c88c
commit 26493af58a
1 changed files with 1 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
gcc/fortran/frontend-passes.c
View file

@ -5229,6 +5229,7 @@ gfc_expr_walker (gfc_expr **e, walk_expr_fn_t exprfn, void *data)
case EXPR_OP:
WALK_SUBEXPR ((*e)->value.op.op1);
WALK_SUBEXPR_TAIL ((*e)->value.op.op2);
/* No fallthru because of the tail recursion above. */
case EXPR_FUNCTION:
for (a = (*e)->value.function.actual; a; a = a->next)
WALK_SUBEXPR (a->expr);