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Implement --debug-only option in order to easily dump LLVM debug output

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For example: `cling --debug-only="orc,jitlink"`
This commit is contained in:
Stefan Gränitz 2021-11-05 17:58:53 +01:00 committed by jenkins
parent 6254189e8b
commit 7b27b283f9
2 changed files with 38 additions and 0 deletions
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6
include/cling/Interpreter/ClingOptions.inc
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@ -18,6 +18,12 @@ PREFIX(prefix_2, {"--" COMMA 0})
OPTION(prefix_0, "<input>", INPUT, Input, INVALID, INVALID, 0, 0, 0, 0, 0, 0)
OPTION(prefix_0, "<unknown>", UNKNOWN, Unknown, INVALID, INVALID, 0, 0, 0, 0, 0, 0)
#ifndef NDEBUG
OPTION(prefix_2, "debug-only=", _debugFlags_EQ, Joined, INVALID, INVALID, 0, 0, 0,
"Debug flags to enable", 0, 0)
OPTION(prefix_2, "debug-only", _debugFlags, Separate, INVALID, INVALID, 0, 0, 0,
"Debug flags to enable", 0, 0)
#endif
OPTION(prefix_2, "errorout", _errorout, Flag, INVALID, INVALID, 0, 0, 0,
"Do not recover from input errors", 0, 0)
// Re-implement to forward to our help

32
lib/Interpreter/InvocationOptions.cpp
View File

@ -19,6 +19,7 @@
#include "llvm/Option/Option.h"
#include "llvm/Option/OptTable.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include <memory>
@ -69,6 +70,27 @@ static const char kNoStdInc[] = "-nostdinc";
return new ClingOptTable();
}
#ifndef NDEBUG
void setDebugOnlyTypes(const char *FlagsStr) {
llvm::SmallString<64> MutFlagsStr(FlagsStr);
// Collect single flags and replace seperators with null-terminators
std::vector<const char *> DebugTypes;
char *Flag = MutFlagsStr.data();
do {
DebugTypes.push_back(Flag);
while (*Flag != ',' && *Flag != ';' && *Flag != '\0')
++Flag;
if (*Flag == '\0')
break;
*(Flag++) = '\0';
} while (true);
DebugFlag = true;
setCurrentDebugTypes(DebugTypes.data(), DebugTypes.size());
}
#endif
static void ParseStartupOpts(cling::InvocationOptions& Opts,
InputArgList& Args) {
Opts.ErrorOut = Args.hasArg(OPT__errorout);
@ -84,6 +106,16 @@ static const char kNoStdInc[] = "-nostdinc";
Opts.MetaString = ".";
}
}
#ifndef NDEBUG
if (Arg* DebugFlagsArg = Args.getLastArg(OPT__debugFlags, OPT__debugFlags_EQ)) {
const char *FlagsStr = DebugFlagsArg->getValue();
if (*FlagsStr == '\0') {
cling::errs() << "ERROR: --debug-only argument must be non-empty! Ignoring it.\n";
} else {
setDebugOnlyTypes(FlagsStr);
}
}
#endif
}
static void Extend(std::vector<std::string>& A, std::vector<std::string> B) {