Hi.
I'm bit ashamed that I tasted our gdb pretty-printers today for the first time.
It's working nice and I would like to extend it a bit for classes that I
print/debug often.
gcc/ChangeLog:
2018-04-10 Martin Liska <mli...@suse.cz>
* gdbhooks.py: Add pretty-printers for varpool_node, symtab_node,
cgraph_edge and ipa_ref.
---
gcc/gdbhooks.py | 45 ++++++++++++++++++++++++++++++++++++++-------
1 file changed, 38 insertions(+), 7 deletions(-)
diff --git a/gcc/gdbhooks.py b/gcc/gdbhooks.py
index f13e4e67402..e439942531a 100644
--- a/gcc/gdbhooks.py
+++ b/gcc/gdbhooks.py
@@ -105,10 +105,10 @@ it's a quick way of getting lots of debuggability quickly.
Callgraph nodes are printed with the name of the function decl, if
available:
(gdb) frame 5
- #5 0x00000000006c288a in expand_function (node=<cgraph_node* 0x7ffff0312720 "foo">) at ../../src/gcc/cgraphunit.c:1594
+ #5 0x00000000006c288a in expand_function (node=<cgraph_node* 0x7ffff0312720 "foo"/12345>) at ../../src/gcc/cgraphunit.c:1594
1594 execute_pass_list (g->get_passes ()->all_passes);
(gdb) p node
- $1 = <cgraph_node* 0x7ffff0312720 "foo">
+ $1 = <cgraph_node* 0x7ffff0312720 "foo"/12345>
vec<> pointers are printed as the address followed by the elements in
braces. Here's a length 2 vec:
@@ -245,18 +245,45 @@ class TreePrinter:
# Callgraph pretty-printers
######################################################################
-class CGraphNodePrinter:
+class SymtabNodePrinter:
def __init__(self, gdbval):
self.gdbval = gdbval
def to_string (self):
- result = '<cgraph_node* 0x%x' % intptr(self.gdbval)
+ t = str(self.gdbval.type)
+ result = '<%s 0x%x' % (t, intptr(self.gdbval))
if intptr(self.gdbval):
# symtab_node::name calls lang_hooks.decl_printable_name
# default implementation (lhd_decl_printable_name) is:
# return IDENTIFIER_POINTER (DECL_NAME (decl));
tree_decl = Tree(self.gdbval['decl'])
- result += ' "%s"' % tree_decl.DECL_NAME().IDENTIFIER_POINTER()
+ result += ' "%s"/%d' % (tree_decl.DECL_NAME().IDENTIFIER_POINTER(), self.gdbval['order'])
+ result += '>'
+ return result
+
+class CgraphEdgePrinter:
+ def __init__(self, gdbval):
+ self.gdbval = gdbval
+
+ def to_string (self):
+ result = '<cgraph_edge* 0x%x' % intptr(self.gdbval)
+ if intptr(self.gdbval):
+ src = SymtabNodePrinter(self.gdbval['caller']).to_string()
+ dest = SymtabNodePrinter(self.gdbval['callee']).to_string()
+ result += ' (%s -> %s)' % (src, dest)
+ result += '>'
+ return result
+
+class IpaReferencePrinter:
+ def __init__(self, gdbval):
+ self.gdbval = gdbval
+
+ def to_string (self):
+ result = '<ipa_ref* 0x%x' % intptr(self.gdbval)
+ if intptr(self.gdbval):
+ src = SymtabNodePrinter(self.gdbval['referring']).to_string()
+ dest = SymtabNodePrinter(self.gdbval['referred']).to_string()
+ result += ' (%s -> %s:%s)' % (src, dest, str(self.gdbval['use']))
result += '>'
return result
@@ -503,8 +530,12 @@ def build_pretty_printer():
pp = GdbPrettyPrinters('gcc')
pp.add_printer_for_types(['tree'],
'tree', TreePrinter)
- pp.add_printer_for_types(['cgraph_node *'],
- 'cgraph_node', CGraphNodePrinter)
+ pp.add_printer_for_types(['cgraph_node *', 'varpool_node *', 'symtab_node *'],
+ 'symtab_node', SymtabNodePrinter)
+ pp.add_printer_for_types(['cgraph_edge *'],
+ 'cgraph_edge', CgraphEdgePrinter)
+ pp.add_printer_for_types(['ipa_ref *'],
+ 'ipa_ref', IpaReferencePrinter)
pp.add_printer_for_types(['dw_die_ref'],
'dw_die_ref', DWDieRefPrinter)
pp.add_printer_for_types(['gimple', 'gimple *',
