a massive number of temporary strings created when parsing a command line.
More still left to eliminate.

llvm-svn: 82318

- Replace std::map<std::string with StringMap
- Eliminate unnecessary std::string copies
- ~10% speed-up for clang's testsuite on my machine (debug build)

llvm-svn: 82312

llvm-svn: 80855

llvm-svn: 79857

llvm-svn: 79847

llvm-svn: 79842

llvm-svn: 77892

llvm-svn: 77127

llvm-svn: 75889

This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640

Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379

and abort()/exit() -> llvm_report_error().

llvm-svn: 75363

llvm-svn: 70437

abstraction for CommandLine.

llvm-svn: 68588

* Simplified if statement

llvm-svn: 68163

llvm-svn: 67892

option to make the -fno- form on the option.  We also document the new
form in the CommandLine documentation.

llvm-svn: 63559

is necessary for eventual gcc commmand line compatibility.

llvm-svn: 63384

llvm-svn: 63171

llvm-svn: 62688

Makes possible to specify options that take multiple arguments (a-la
-sectalign on Darwin). See documentation for details.

llvm-svn: 62372

llvm-svn: 61378

llvm-svn: 60770

instead of requiring all "short description" strings to begin with
two spaces. This makes these strings less mysterious, and it fixes
some cases where short description strings mistakenly did not
begin with two spaces.

llvm-svn: 57521

once (ie, at two different places in the source, not two times on the
commandline).

llvm-svn: 51771

llvm-svn: 50659

llvm-svn: 50355

llvm-svn: 48801

marked read-write. Use const so that they can be allocated in a
read-only segment.

llvm-svn: 48800

invalid command-line options.

llvm-svn: 47523

llvm-svn: 47377

llvm-svn: 47367

llvm-svn: 45418

llvm-svn: 42788

commands and into the common code.

llvm-svn: 42752

for a target-dependent default with a command-line override; this way
should be generally usable.

llvm-svn: 37285

handlers (like the pass list).  My previous fix only supported *new* command
line options, not additions to old ones.

This fixes test/Feature/load_module.ll

llvm-svn: 35935

llvm-svn: 35905

This fixes llvm-ar.

llvm-svn: 35727

This dramatically reduce the amount of memory allocated by the commandline stuff
at static init time, changing it to build local data structures when ParseCommandLineOptions
is called.  In a dummy empty program that links some llvm libraries, this reduces
the number of malloc'd bytes from 4864 to 3360 on entry to main.  Most of that
memory is now allocated by non-commandline related stuff.

llvm-svn: 35701