dominator information.

llvm-svn: 128452

becomes reachable when before it wasn't). Check to make sure that it's not null
before trying to use it.

llvm-svn: 128434

protector insertion not working correctly with unreachable code. Since that
revision was rolled out, this test doesn't actual fail before this fix.

llvm-svn: 127497

they all ready do). This removes two dominator recomputations prior to isel,
which is a 1% improvement in total llc time for 403.gcc.

The only potentially suspect thing is making GCStrategy recompute dominators if
it used a custom lowering strategy.

llvm-svn: 123064

Get rid of static constructors for pass registration.  Instead, every pass exposes an initializeMyPassFunction(), which
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.

llvm-svn: 116820

llvm-svn: 115996

llvm-svn: 110460

llvm-svn: 110410

ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396

llvm-svn: 109045

llvm-svn: 107670

registers.  Split out testcases per architecture and os
now.

Patch from Nelson Elhage.

llvm-svn: 107640

isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!

llvm-svn: 96223

llvm-svn: 92771

Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.

llvm-svn: 85042

does.

llvm-svn: 84916

llvm-svn: 78948

llvm-svn: 75863

llvm-svn: 75703

This started as a small change, I swear.  Unfortunately, lots of things call the [I|F]CmpInst constructors.  Who knew!?

llvm-svn: 75200

will make it more obvious what it represents, and stop
it being confused with the StoreSize.

llvm-svn: 71349

Delete this default branch, because we're going to generate our own.

llvm-svn: 66234

suggested by Chris.

llvm-svn: 62099

llvm-svn: 59519

llvm-svn: 59504

- Use less indentation in coding.
- Shorten description.
- Update comments.
- Move code around

llvm-svn: 59496

llvm-svn: 59202

llvm-svn: 59008

  basic blocks.
- Minor code clean-up.

llvm-svn: 59002

  LLVM IR code and not in the selection DAG ISel. This is a cleaner solution.

- Fix the heuristic for determining if protectors are necessary. The previous
  one wasn't checking the proper type size.

llvm-svn: 58824

llvm-svn: 58823

llvm-svn: 58822

in it, then emit stack protectors.

llvm-svn: 58819

- Get rid of "HasStackProtector" in MachineFrameInfo.
- Modify intrinsics to tell which are doing what with memory.

llvm-svn: 58799

"alloca".

llvm-svn: 58792

- stackprotector_prologue creates a stack object and stores the guard there.

- stackprotector_epilogue reads the stack guard from the stack position created
  by stackprotector_prologue.

- The PrologEpilogInserter was changed to make sure that the stack guard is
  first on the stack frame.

llvm-svn: 58791

llvm-svn: 58741

llvm-svn: 58740

llvm-svn: 58739

isn't going to be generated.

llvm-svn: 58734