Refactor some code to expose an interface to constant fold and instruction given it's opcode, typeand operands.

llvm-svn: 28517

llvm-svn: 28512

llvm-svn: 28507

there's still a lot of work to be done on it.

llvm-svn: 28506

and documentation updates soo.

llvm-svn: 28495

array scopes possibly accessing valid memory in outer subscripts.

llvm-svn: 28478

This implements Transforms/InstCombine/2006-05-10-InvalidIndexUndef.ll

llvm-svn: 28450

llvm-svn: 28395

to the new module.  Patch provided by Nick Lewycky!

llvm-svn: 28349

llvm-svn: 28289

llvm-svn: 28286

Domagoj Babic!

llvm-svn: 28181

nondeterminism being bad) could cause some trivial missed optimizations (dead
phi nodes being left around for later passes to clean up).

With this, llvm-gcc4 now bootstraps and correctly compares.  I don't know
why I never tried to do it before... :)

llvm-svn: 27984

llvm-svn: 27513

llvm-svn: 27478

llvm-svn: 27344

llvm-svn: 27332

llvm-svn: 27161

llvm-svn: 26673

llvm-svn: 26275

can provide work for the outer loop to canonicalize.

This fixes a case that breaks unswitching.

llvm-svn: 26189

block in the appropriate loop nest.

Third time is the charm, right?

llvm-svn: 26187

llvm-svn: 26128

llvm-svn: 26126

llvm-svn: 26121

loops and their subloops.

llvm-svn: 26118

llvm-svn: 26116

llvm-svn: 25633

llvm-svn: 25572

llvm-svn: 25559

llvm-svn: 25509

packed types correctly.

llvm-svn: 25470

library list as well.  This should help bugpoint.

llvm-svn: 25424

llvm-svn: 25407

This patch is an incremental step towards supporting a flat symbol table.
It de-overloads the intrinsic functions by providing type-specific intrinsics
and arranging for automatically upgrading from the old overloaded name to
the new non-overloaded name. Specifically:
  llvm.isunordered -> llvm.isunordered.f32, llvm.isunordered.f64
  llvm.sqrt -> llvm.sqrt.f32, llvm.sqrt.f64
  llvm.ctpop -> llvm.ctpop.i8, llvm.ctpop.i16, llvm.ctpop.i32, llvm.ctpop.i64
  llvm.ctlz -> llvm.ctlz.i8, llvm.ctlz.i16, llvm.ctlz.i32, llvm.ctlz.i64
  llvm.cttz -> llvm.cttz.i8, llvm.cttz.i16, llvm.cttz.i32, llvm.cttz.i64
New code should not use the overloaded intrinsic names. Warnings will be
emitted if they are used.

llvm-svn: 25366

llvm.stacksave/restore when it inserts calls to them.

llvm-svn: 25320

llvm-svn: 25309

llvm-svn: 25295

resultant code with llvm.stacksave/llvm.stackrestore intrinsics.

llvm-svn: 25286

time in common C cases.

llvm-svn: 25285