diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 59 |
1 files changed, 26 insertions, 33 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 47494106824..2b8ad801e9a 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -1196,7 +1196,7 @@ verify_tree (tree x, struct tlist **pbefore_sp, struct tlist **pno_sp, { struct tlist *tmp_before, *tmp_nosp, *tmp_list2, *tmp_list3; enum tree_code code; - char cl; + enum tree_code_class cl; /* X may be NULL if it is the operand of an empty statement expression ({ }). */ @@ -1345,39 +1345,32 @@ verify_tree (tree x, struct tlist **pbefore_sp, struct tlist **pno_sp, add_tlist (pno_sp, t->cache_after_sp, NULL_TREE, 1); return; } - default: - break; - } - if (cl == '1') - { - if (first_rtl_op (code) == 0) - return; - x = TREE_OPERAND (x, 0); - writer = 0; - goto restart; - } - - switch (cl) - { - case 'r': - case '<': - case '2': - case 'e': - case 's': - case 'x': - { - int lp; - int max = first_rtl_op (TREE_CODE (x)); - for (lp = 0; lp < max; lp++) - { - tmp_before = tmp_nosp = 0; - verify_tree (TREE_OPERAND (x, lp), &tmp_before, &tmp_nosp, NULL_TREE); - merge_tlist (&tmp_nosp, tmp_before, 0); - add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0); - } - break; - } + default: + /* For other expressions, simply recurse on their operands. + Manual tail recursion for unary expressions. + Other non-expressions need not be processed. */ + if (cl == tcc_unary) + { + if (first_rtl_op (code) == 0) + return; + x = TREE_OPERAND (x, 0); + writer = 0; + goto restart; + } + else if (IS_EXPR_CODE_CLASS (cl)) + { + int lp; + int max = first_rtl_op (TREE_CODE (x)); + for (lp = 0; lp < max; lp++) + { + tmp_before = tmp_nosp = 0; + verify_tree (TREE_OPERAND (x, lp), &tmp_before, &tmp_nosp, 0); + merge_tlist (&tmp_nosp, tmp_before, 0); + add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0); + } + } + return; } } |