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tree.def (CASE_LABEL_EXPR): Fix documentation, mention all operands. 

* tree.def (CASE_LABEL_EXPR): Fix documentation, mention all operands.
	* tree-cfg.c (edge_to_cases): Fix documentation.

From-SVN: r186575
This commit is contained in:
Steven Bosscher 2012-04-18 18:10:17 +00:00
parent 27dd0a95d1
commit 308e3ba6f5
3 changed files with 16 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2012-04-18 Steven Bosscher <steven@gcc.gnu.org>
* tree.def (CASE_LABEL_EXPR): Fix documentation, mention all operands.
* tree-cfg.c (edge_to_cases): Fix documentation.
2012-04-18 Uros Bizjak <ubizjak@gmail.com> 2012-04-18 Uros Bizjak <ubizjak@gmail.com>
* config/alpha/sync.md (fetchop_name): Change ior attribute to "or". * config/alpha/sync.md (fetchop_name): Change ior attribute to "or".

2
gcc/tree-cfg.c
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@ -56,7 +56,7 @@ static const int initial_cfg_capacity = 20;
/* This hash table allows us to efficiently lookup all CASE_LABEL_EXPRs /* This hash table allows us to efficiently lookup all CASE_LABEL_EXPRs
which use a particular edge. The CASE_LABEL_EXPRs are chained together which use a particular edge. The CASE_LABEL_EXPRs are chained together
via their TREE_CHAIN field, which we clear after we're done with the via their CASE_CHAIN field, which we clear after we're done with the
hash table to prevent problems with duplication of GIMPLE_SWITCHes. hash table to prevent problems with duplication of GIMPLE_SWITCHes.
Access to this list of CASE_LABEL_EXPRs allows us to efficiently Access to this list of CASE_LABEL_EXPRs allows us to efficiently

14
gcc/tree.def
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@ -876,10 +876,16 @@ DEFTREECODE (LOOP_EXPR, "loop_expr", tcc_statement, 1)
of all the cases. */ of all the cases. */
DEFTREECODE (SWITCH_EXPR, "switch_expr", tcc_statement, 3) DEFTREECODE (SWITCH_EXPR, "switch_expr", tcc_statement, 3)
/* Used to represent a case label. The operands are CASE_LOW and /* Used to represent a case label.
CASE_HIGH, respectively. If CASE_LOW is NULL_TREE, the label is a
'default' label. If CASE_HIGH is NULL_TREE, the label is a normal case Operand 0 is CASE_LOW. It may be NULL_TREE, in which case the label
label. CASE_LABEL is the corresponding LABEL_DECL. */ is a 'default' label.
Operand 1 is CASE_HIGH. If it is NULL_TREE, the label is a simple
(one-value) case label. If it is non-NULL_TREE, the case is a range.
Operand 2 is CASE_LABEL, which is is the corresponding LABEL_DECL.
Operand 4 is CASE_CHAIN. This operand is only used in tree-cfg.c to
speed up the lookup of case labels which use a particular edge in
the control flow graph. */
DEFTREECODE (CASE_LABEL_EXPR, "case_label_expr", tcc_statement, 4) DEFTREECODE (CASE_LABEL_EXPR, "case_label_expr", tcc_statement, 4)
/* Used to represent an inline assembly statement. ASM_STRING returns a /* Used to represent an inline assembly statement. ASM_STRING returns a