llvm-svn: 33902

Revert last patch which caused iteration invalidation.

llvm-svn: 33901

llvm-svn: 33900

Don't re-use var names.

llvm-svn: 33899

llvm-svn: 33898

llvm-svn: 33897

llvm-svn: 33896

llvm-svn: 33895

llvm-svn: 33894

llvm-svn: 33893

llvm-svn: 33892

llvm-svn: 33891

Learn from sext and zext. The destination value falls within the range of the
source type.

Generalize properties regarding constant ints.

Get smarter about marking blocks as unreachable. If 1 >= 2 in order for this
block to execute, then it isn't reachable.

llvm-svn: 33889

llvm-svn: 33888

Fix linkage problems after libLLVMTransforms.a was removed.

llvm-svn: 33887

libraries linked with. This permits a project to still use USEDLIBS to
specify its own libraries in conjunction with LINK_COMPONENTS. llvm-stacker
needs this after libLLVMTransforms.a went away.

llvm-svn: 33886

llvm-svn: 33885

X + C to promote LEA formation.  We would incorrectly apply it in some cases
(test) and miss it in others.

This fixes CodeGen/X86/2007-02-04-OrAddrMode.ll

llvm-svn: 33884

llvm-svn: 33883

speeds up the isel pass from 2.5570s to 2.4722s on kc++ (3.4%).

llvm-svn: 33879

their operands with the node itself.  This reduces malloc traffic for operand
lists.  This reduces isel time on kc++ from 2.6164 to 2.5570s, about 2.3%.

llvm-svn: 33878

an SDNode to be allocated as part of the node itself, instead of being a
separate new[]'d object.  Switch HandleSDNode, LoadSDNode, and StoreSDNode
to use this mechanism.  This saves one heap allocation and free for each node
of this type that is allocated.  This reduces isel time from 2.7638 to 2.6164s
on kc++, which is a 5.6% speedup.

llvm-svn: 33877

llvm-svn: 33876

llvm-svn: 33875

llvm-svn: 33873

llvm-svn: 33872

llvm-svn: 33871

llvm-svn: 33870

no behavior or performance change here.

llvm-svn: 33869

llvm-svn: 33868

llvm-svn: 33867

llvm-svn: 33866

llvm-svn: 33865

llvm-svn: 33864

llvm-svn: 33863

llvm-svn: 33862

llvm-svn: 33861

aren't worth it.

llvm-svn: 33860

llvm-svn: 33859

Make llvm-upgrade valgrind clean. Deleting type instances is a really
nasty thing to do to LLVM. This was a hold-over from the re-write.
This fixes test/Assembler/2007-01-22-UpgradeTypeMapInvalidMemory.ll and
potentially many other bugs.

llvm-svn: 33858