llvm-svn: 8336

llvm-svn: 8335

unless it's not empty!

llvm-svn: 8334

llvm-svn: 8333

call setAbstract).  Now that we just compute abstractness we can also return
the computed value by value instead of as an argument.

llvm-svn: 8332

llvm-svn: 8331

not correctly calculated, and calculating it wrong for fun seems rather
pointless.  This also speeds up my favorite testcase by .25 seconds.

llvm-svn: 8330

not correctly calculated, and calculating it wrong for fun seems rather
pointless.

llvm-svn: 8329

script).
Removed the use of sys/types.h and sys/stat.h.
Modified FileExists() so that it uses the access() system call to check for
file existance.  This requires less header files and might even be a tad bit
faster.

llvm-svn: 8328

llvm-svn: 8327

Return failure if the chmod() fails.

llvm-svn: 8326

library code now adds all execute bits that are allowed by the umask value to
the file's current permission bits.

llvm-svn: 8325

gives it execute access while respecting the user's umask.

llvm-svn: 8324

we need to know anyway.  This reduces the 2002-07-08-HugePerformanceProblem.llx
down to 3.210u:0.010s, which is back in the acceptable range again

llvm-svn: 8323

Now we're back to: 131.730u, 0.330s, which is still quite an improvement,
but still quite unacceptable

llvm-svn: 8322

llvm-svn: 8321

the type is analyzed.  Instead, only compute it when requested (with
getDescription), and cached for reuse later.

This dramatically speeds up LLVM in general because these descriptions almost
_never_ need to be constructed.  The only time they are used is when a type is
<<'d.  Printing of modules by themselves uses other code to print symbolic
types when possible, so these descriptions are really only used for debugging.

Also, this fixes the particularly bad case when lots of types get resolved to
each other, such as during linking of large programs.  In these cases, the type
descriptions would be repeatedly recomputed and discarded even though: A. noone
reads the description before it gets resolved, and B. many many resolutions
happen at intermediate steps, causing a HUGE waste of time.

Overall, this makes the getTypeDesc function much more light-weight, and fixes
bug: Assembler/2002-07-08-HugePerformanceProblem.llx, which went from taking
1048.770u/19.150s (which is 17.5 MINUTES, on apoc), to taking 0.020u/0.000s,
which is a nice little speedup.  :)

llvm-svn: 8320

llvm-svn: 8319

llvm-svn: 8318

llvm-svn: 8317

llvm-svn: 8316

llvm-svn: 8315

llvm-svn: 8314

llvm-svn: 8313

llvm-svn: 8312

llvm-svn: 8311

llvm-svn: 8310

llvm-svn: 8309

llvm-svn: 8308

llvm-svn: 8307

llvm-svn: 8306

llvm-svn: 8305

llvm-svn: 8304

llvm-svn: 8303

llvm-svn: 8302

llvm-svn: 8301

llvm-svn: 8300

llvm-svn: 8299

llvm-svn: 8298

llvm-svn: 8297