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Revert "[Support]Look up in top-level subcommand as a fallback when l…
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…ooking options for a custom subcommand (llvm#71975)

…ooking options for a custom subcommand. (llvm#71776)"

This reverts commit b88308b.

The build-bot is unhappy
(https://lab.llvm.org/buildbot/#/builders/186/builds/13096),
`GroupingAndPrefix` fails after `TopLevelOptInSubcommand` (the newly
added test).

Revert while I look into this (might be related with test sharding but
not sure)

```

[----------] 3 tests from CommandLineTest
[ RUN      ] CommandLineTest.TokenizeWindowsCommandLine2
[       OK ] CommandLineTest.TokenizeWindowsCommandLine2 (0 ms)
[ RUN      ] CommandLineTest.TopLevelOptInSubcommand
[       OK ] CommandLineTest.TopLevelOptInSubcommand (0 ms)
[ RUN      ] CommandLineTest.GroupingAndPrefix
 #0 0x00ba8118 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x594118)
 #1 0x00ba5914 llvm::sys::RunSignalHandlers() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x591914)
 #2 0x00ba89c4 SignalHandler(int) (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x5949c4)
 #3 0xf7828530 __default_sa_restorer /build/glibc-9MGTF6/glibc-2.31/signal/../sysdeps/unix/sysv/linux/arm/sigrestorer.S:67:0
 #4 0x00af91f0 (anonymous namespace)::CommandLineParser::ResetAllOptionOccurrences() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x4e51f0)
 #5 0x00af8e1c llvm::cl::ResetCommandLineParser() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x4e4e1c)
 #6 0x0077cda0 (anonymous namespace)::CommandLineTest_GroupingAndPrefix_Test::TestBody() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x168da0)
 #7 0x00bc5adc testing::Test::Run() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x5b1adc)
 #8 0x00bc6cc0 testing::TestInfo::Run() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x5b2cc0)
 #9 0x00bc7880 testing::TestSuite::Run() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x5b3880)
#10 0x00bd7974 testing::internal::UnitTestImpl::RunAllTests() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x5c3974)
#11 0x00bd6ebc testing::UnitTest::Run() (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x5c2ebc)
#12 0x00bb1058 main (/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/unittests/Support/./SupportTests+0x59d058)
#13 0xf78185a4 __libc_start_main /build/glibc-9MGTF6/glibc-2.31/csu/libc-start.c:342:3
```
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minglotus-6 authored Nov 10, 2023
1 parent f2f5f1b commit 2e912a2
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7 changes: 0 additions & 7 deletions llvm/lib/Support/CommandLine.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -1667,13 +1667,6 @@ bool CommandLineParser::ParseCommandLineOptions(int argc,
Handler = LookupLongOption(*ChosenSubCommand, ArgName, Value,
LongOptionsUseDoubleDash, HaveDoubleDash);

// If Handler is not found in a specialized subcommand, look up handler
// in the top-level subcommand.
// cl::opt without cl::sub belongs to top-level subcommand.
if (!Handler && ChosenSubCommand != &SubCommand::getTopLevel())
Handler = LookupLongOption(SubCommand::getTopLevel(), ArgName, Value,
LongOptionsUseDoubleDash, HaveDoubleDash);

// Check to see if this "option" is really a prefixed or grouped argument.
if (!Handler && !(LongOptionsUseDoubleDash && HaveDoubleDash))
Handler = HandlePrefixedOrGroupedOption(ArgName, Value, ErrorParsing,
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53 changes: 0 additions & 53 deletions llvm/unittests/Support/CommandLineTest.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -525,59 +525,6 @@ TEST(CommandLineTest, LookupFailsInWrongSubCommand) {
EXPECT_FALSE(Errs.empty());
}

TEST(CommandLineTest, TopLevelOptInSubcommand) {
enum LiteralOptionEnum {
foo,
bar,
baz,
};

cl::ResetCommandLineParser();

// This is a top-level option and not associated with a subcommand.
// A command line using subcommand should parse both subcommand options and
// top-level options. A valid use case is that users of llvm command line
// tools should be able to specify top-level options defined in any library.
cl::opt<std::string> TopLevelOpt("str", cl::init("txt"),
cl::desc("A top-level option."));

StackSubCommand SC("sc", "Subcommand");
StackOption<std::string> PositionalOpt(
cl::Positional, cl::desc("positional argument test coverage"),
cl::sub(SC));
StackOption<LiteralOptionEnum> LiteralOpt(
cl::desc("literal argument test coverage"), cl::sub(SC), cl::init(bar),
cl::values(clEnumVal(foo, "foo"), clEnumVal(bar, "bar"),
clEnumVal(baz, "baz")));
StackOption<bool> EnableOpt("enable", cl::sub(SC), cl::init(false));
StackOption<int> ThresholdOpt("threshold", cl::sub(SC), cl::init(1));

const char *PositionalOptVal = "input-file";
const char *args[] = {"prog", "sc", PositionalOptVal,
"-enable", "--str=csv", "--threshold=2"};

// cl::ParseCommandLineOptions returns true on success. Otherwise, it will
// print the error message to stderr and exit in this setting (`Errs` ostream
// is not set).
ASSERT_TRUE(cl::ParseCommandLineOptions(sizeof(args) / sizeof(args[0]), args,
StringRef()));
EXPECT_STREQ(PositionalOpt.getValue().c_str(), PositionalOptVal);
EXPECT_TRUE(EnableOpt);
// Tests that the value of `str` option is `csv` as specified.
EXPECT_STREQ(TopLevelOpt.getValue().c_str(), "csv");
EXPECT_EQ(ThresholdOpt, 2);

for (auto &[LiteralOptVal, WantLiteralOpt] :
{std::pair{"--bar", bar}, {"--foo", foo}, {"--baz", baz}}) {
const char *args[] = {"prog", "sc", LiteralOptVal};
ASSERT_TRUE(cl::ParseCommandLineOptions(sizeof(args) / sizeof(args[0]),
args, StringRef()));

// Tests that literal options are parsed correctly.
EXPECT_EQ(LiteralOpt, WantLiteralOpt);
}
}

TEST(CommandLineTest, AddToAllSubCommands) {
cl::ResetCommandLineParser();

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