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The --debug-only option now takes a comma separated list of debug types. 

This means that the DEBUG_TYPE cannot take a comma anymore. All existing passes
conform to this rule.

Differential Revision: http://reviews.llvm.org/D15645

llvm-svn: 257466
This commit is contained in:
Christof Douma 2016-01-12 10:23:13 +00:00
parent 49982f5773
commit f617e678e9
2 changed files with 10 additions and 4 deletions
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6
llvm/docs/ProgrammersManual.rst
View File

@ -408,6 +408,9 @@ Then you can run your pass like this:
'foo' debug type
$ opt < a.bc > /dev/null -mypass -debug-only=bar
'bar' debug type
$ opt < a.bc > /dev/null -mypass -debug-only=foo,bar
'foo' debug type
'bar' debug type
Of course, in practice, you should only set ``DEBUG_TYPE`` at the top of a file,
to specify the debug type for the entire module. Be careful that you only do
@ -417,7 +420,8 @@ system in place to ensure that names do not conflict. If two different modules
use the same string, they will all be turned on when the name is specified.
This allows, for example, all debug information for instruction scheduling to be
enabled with ``-debug-only=InstrSched``, even if the source lives in multiple
files.
files. The name must not include a comma (,) as that is used to seperate the
arguments of the ``-debug-only`` option.
For performance reasons, -debug-only is not available in optimized build
(``--enable-optimized``) of LLVM.

8
llvm/lib/Support/Debug.cpp
View File

@ -95,7 +95,10 @@ struct DebugOnlyOpt {
if (Val.empty())
return;
DebugFlag = true;
CurrentDebugType->push_back(Val);
SmallVector<StringRef,8> dbgTypes;
StringRef(Val).split(dbgTypes, ',', -1, false);
for (auto dbgType : dbgTypes)
CurrentDebugType->push_back(dbgType);
}
};
@ -104,10 +107,9 @@ struct DebugOnlyOpt {
static DebugOnlyOpt DebugOnlyOptLoc;
static cl::opt<DebugOnlyOpt, true, cl::parser<std::string> >
DebugOnly("debug-only", cl::desc("Enable a specific type of debug output"),
DebugOnly("debug-only", cl::desc("Enable a specific type of debug output (comma separated list of types)"),
cl::Hidden, cl::ZeroOrMore, cl::value_desc("debug string"),
cl::location(DebugOnlyOptLoc), cl::ValueRequired);
// Signal handlers - dump debug output on termination.
static void debug_user_sig_handler(void *Cookie) {
// This is a bit sneaky. Since this is under #ifndef NDEBUG, we