diff options
Diffstat (limited to 'gcc/doc/cfg.texi')
| -rw-r--r-- | gcc/doc/cfg.texi | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/doc/cfg.texi b/gcc/doc/cfg.texi index b8c6427..bbd6694 100644 --- a/gcc/doc/cfg.texi +++ b/gcc/doc/cfg.texi @@ -297,10 +297,12 @@ edge. The opposite conversion is difficult, but should not happen anyway. The edges can be eliminated via @code{purge_dead_edges} call. @findex REG_EH_REGION, EDGE_ABNORMAL_CALL -In the RTL representation, the destination of an exception edge is -specified by @code{REG_EH_REGION} note attached to the insn. -In case of a trapping call the @code{EDGE_ABNORMAL_CALL} flag is set -too. In the @code{GIMPLE} representation, this extra flag is not set. +In the RTL representation, a @code{REG_EH_REGION} note is attached to +an instruction that can throw an exception. The destination of the +exception edge originating at such an instruction is specified by the +value of the @code{REG_EH_REGION} note. In case of a trapping call +the @code{EDGE_ABNORMAL_CALL} flag is set too. In the @code{GIMPLE} +representation, this extra flag is not set. @findex may_trap_p, tree_could_trap_p In the RTL representation, the predicate @code{may_trap_p} may be used |