GCC的插件，它可以加载调试时，GCC，显示内部结构图。

A gcc plugin, which can be loaded when debugging gcc, to show internal structures graphically. Available commands include, view-bb ---- show the basic block view-bbs ---- show the basic blocks view-cgraph ---- show the current call graph view-dominance ---- show the current dominance graph view-function ---- show the current function in tree-level view-gimple-hierarchy ---- show gimple statement structure hierarchy view-loop ---- show the loop view-passes ---- show passes view-rtx ---- show a specified rtx view-tree ---- show a specified tree view-tree-hierarchy ---- show tree structure hierarchy view-tree-hierarchy-4-6 ---- show tree structure hierarchy for gcc 4.6 view-tree-hierarchy-4-7 ---- show tree structure hierarchy for gcc 4.7 Here"s an example about how to use vcg-plugin in gdb (with vcg-plugin.gdbinit): gdb -q -args

gcc-vcg-plugin-1.8
config.sub
Makefile.in
INSTALL
install-sh
configure.ac
config.guess
NEWS
ltmain.sh
example
README
vcg-plugin
aclocal.m4
libgdl
COPYING
m4
ylwrap
ChangeLog
AUTHORS
depcomp
Makefile.am
config.h.in
configure
missing