Added *hidden* flags -print-options and -print-all-options so
developers can see if their driver changed any cl::Option's. The
current implementation isn't perfect but handles most kinds of
options.

Added *hidden* flags -print-options and -print-all-options so
developers can see if their driver changed any cl::Option's. The
current implementation isn't perfect but handles most kinds of
options. This is nice to have when decomposing the stages of
compilation and moving between different drivers. It's also a good
sanity check when comparing results produced by different command line
invocations that are expected to produce the comparable results.

Note: This is not an attempt to prolong the life of cl::Option. On the
contrary, it's a placeholder for a feature that must exist when
cl::Option is replaced by a more appropriate framework. A new
framework needs: a central option registry, dynamic name lookup,
non-global containers of option values (e.g. per-module,
per-function), *and* the ability to print options values and their defaults at
any point during compilation.

llvm-svn: 128910

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Support/CommandLine: Fix LookupNearestOption to also search extra option names.

llvm-svn: 124124

Support/CommandLine: Add "Did you mean" print for mismatched operands.

llvm-svn: 123717

Support/PathV1: Deprecate getLast.

llvm-svn: 122116

MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> via an out parm.

llvm-svn: 121958

Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with error_code &ec. And fix clients.

llvm-svn: 121379

Merge System into Support.

llvm-svn: 120298

Fix a use after free. Patch by Frits van Bommel.

llvm-svn: 119842

Add new configure option, --disable-timestamps, intended to turn off anything which would mess up binary/object comparisons. Currently:
- Disables 'Built on ...' in 'foo --version'.
- Disables time

Add new configure option, --disable-timestamps, intended to turn off anything which would mess up binary/object comparisons. Currently:
- Disables 'Built on ...' in 'foo --version'.
- Disables timestamps from being embedded into .dir files.

llvm-svn: 103423

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Fix minor style issues.

llvm-svn: 99414

Refer to -help instead of --help since this is what tools themselves say.
Also, have tools output -help-hidden rather than refer to --help-hidden,
for consistency, and likewise adjust documentation.

Refer to -help instead of --help since this is what tools themselves say.
Also, have tools output -help-hidden rather than refer to --help-hidden,
for consistency, and likewise adjust documentation. This doesn't change
every mention of --help, only those which seemed clearly safe.

llvm-svn: 96578

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Replace strcpy with memcpy when we have the length around anyway.

llvm-svn: 94746

Suppress use of uninitialized variable warning.

llvm-svn: 93046

Change errs() to dbgs().

llvm-svn: 92646

Print a newline after the Args: line so that unrelated errs() output doesn't
end up on the same line.

llvm-svn: 90473

Perform explicit instantiations in the proper namespace, since Clang diagnoses this ill-formity.

llvm-svn: 89846

Move the handling of CommaSeparated options into ProvideOption.

Makes '--comma-separated val1,val2' mean the same thing as
'--comma-separated=val1,val2' (that is, 'val1' and 'val2' are not lumped
to

Move the handling of CommaSeparated options into ProvideOption.

Makes '--comma-separated val1,val2' mean the same thing as
'--comma-separated=val1,val2' (that is, 'val1' and 'val2' are not lumped
together as 'val1,val2'). Also declutters the main loop a bit.

llvm-svn: 89463

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Trailing whitespace.

llvm-svn: 89364

Revert CPU detection code to return "generic" instead of an empty string in case
of failure. The x86 target didn't like empty cpu names and broke x86 tests on
non-x86 buildbots.

llvm-svn: 89111

Report the detected host CPU in --version.

llvm-svn: 88813

Show command-line args and features passed into backend in debug output. Approved by Evan Cheng.

llvm-svn: 86797

Bugfix for the CommaSeparated option. The original code was adding the whole
string at the end of the list, instead of the last comma-separated string.

llvm-svn: 83405

reapply r82348 with a fix, thanks Jeffrey.

llvm-svn: 82683

Roll back r82348, which introduced an infinite loop in ParseCStringVector() that
a trivial unittest would have caught. This revision also adds the trivial
unittest.

llvm-svn: 82675

tidy up

llvm-svn: 82384