This tightens up checking for overflow in alloca sizes, based on feedback
from Duncan and John about the change in r132926.

llvm-svn: 134749

llvm-svn: 134720

llvm-svn: 134708

Make GVN look through extractvalues for recognised intrinsics. GVN can then CSE ops that match values produced by the intrinsics.

llvm-svn: 134677

llvm-svn: 134568

llvm-svn: 134566

llvm-svn: 134549

llvm-svn: 134538

careful about referencing values.

llvm-svn: 134537

llvm-svn: 134530

llvm-svn: 134521

The promotion code lost any alignment information, when hoisting loads and
stores out of the loop. This lead to incorrect aligned memory accesses. We now
use the largest alignment we can prove to be correct.

llvm-svn: 134520

llvm-svn: 134516

llvm-svn: 134441

Putting back the helper that I removed on 7/1 to do this right.

llvm-svn: 134423

PR10267: Don't combine an equality compare with an AND into an inequality compare when the AND has more than one use.

This can pessimize code, inequalities are generally more expensive.

llvm-svn: 134379

llvm-svn: 134306

Generalize @llvm.ctlz, @llvm.cttz, and @llvm.ctpop to work on vectors of integers, and fix the one optimization pass that I'm aware of that needs updating for this.  At least one current target, ARM NEON, can implement these operations on vectors directly.

llvm-svn: 134265

llvm-svn: 134235

nodes.

Original message:
Let simplify cfg simplify bb with only debug and lifetime intrinsics.

llvm-svn: 134182

llvm-svn: 134177

llvm-svn: 134124

llvm-svn: 134112

lifetime intrinsics" due to buildbot failures.

llvm-svn: 134071

llvm-svn: 134057

mean they can be removed.

llvm-svn: 134054

llvm-svn: 134010

llvm-svn: 133992

llvm-svn: 133991

llvm-svn: 133990

llvm-svn: 133988

evaluates all other IV exprs.

llvm-svn: 133982

a bit more control over the order SCEVs are evaluated.

llvm-svn: 133959

llvm-svn: 133946

alloca that only holds a copy of a global and we're going to replace the users
of the alloca with that global, just nuke the lifetime intrinsics. Part of
PR10121.

llvm-svn: 133905

passes as well.

llvm-svn: 133904

llvm-svn: 133756

-Wshorten-64-to-32 warning in Instructions.h.

llvm-svn: 133708

"Reinstate r133435 and r133449 (reverted in r133499) now that the clang
self-hosted build failure has been fixed (r133512)."

Due to some additional warnings.

llvm-svn: 133700

llvm-svn: 133636