git
/
gcc
mirror of git://gcc.gnu.org/git/gcc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

cfg.texi (Edges): Remove reference to Java. 

* doc/cfg.texi (Edges): Remove reference to Java.
	(Maintaining the CFG): Ditto.

From-SVN: r244002
This commit is contained in:
Gerald Pfeifer 2017-01-02 14:23:06 +00:00 committed by Gerald Pfeifer
parent 337160b8ec
commit a94d23fc69
2 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2017-01-02 Gerald Pfeifer <gerald@pfeifer.com>
* doc/cfg.texi (Edges): Remove reference to Java.
(Maintaining the CFG): Ditto.
2017-01-01 Jan Hubicka <hubicka@ucw.cz> 2017-01-01 Jan Hubicka <hubicka@ucw.cz>
PR middle-end/77674 PR middle-end/77674

5
gcc/doc/cfg.texi
View File

@ -285,7 +285,7 @@ is needed. Note that this may require creation of a new basic block.
Exception handling edges represent possible control transfers from a Exception handling edges represent possible control transfers from a
trapping instruction to an exception handler. The definition of trapping instruction to an exception handler. The definition of
``trapping'' varies. In C++, only function calls can throw, but for ``trapping'' varies. In C++, only function calls can throw, but for
Java and Ada, exceptions like division by zero or segmentation fault are Ada exceptions like division by zero or segmentation fault are
defined and thus each instruction possibly throwing this kind of defined and thus each instruction possibly throwing this kind of
exception needs to be handled as control flow instruction. Exception exception needs to be handled as control flow instruction. Exception
edges have the @code{EDGE_ABNORMAL} and @code{EDGE_EH} flags set. edges have the @code{EDGE_ABNORMAL} and @code{EDGE_EH} flags set.
@ -594,8 +594,7 @@ can just use @code{NEXT_INSN} and @code{PREV_INSN} instead. @xref{Insns}.
Usually a code manipulating pass simplifies the instruction stream and Usually a code manipulating pass simplifies the instruction stream and
the flow of control, possibly eliminating some edges. This may for the flow of control, possibly eliminating some edges. This may for
example happen when a conditional jump is replaced with an example happen when a conditional jump is replaced with an
unconditional jump, but also when simplifying possibly trapping unconditional jump. Updating of edges
instruction to non-trapping while compiling Java. Updating of edges
is not transparent and each optimization pass is required to do so is not transparent and each optimization pass is required to do so
manually. However only few cases occur in practice. The pass may manually. However only few cases occur in practice. The pass may
call @code{purge_dead_edges} on a given basic block to remove call @code{purge_dead_edges} on a given basic block to remove