Be more careful when updating Phi nodes after eliminating dead switch cases.  Fix
proposed by Chris.

llvm-svn: 28947

from a switch instruction.

llvm-svn: 28946

llvm-svn: 28945

llvm-svn: 28944

remove the struct return argument of a csret function, even if it is obviously
dead.

llvm-svn: 28943

llvm-svn: 28942

llvm-svn: 28941

llvm-svn: 28939

llvm-svn: 28938

llvm-svn: 28937

llvm-svn: 28936

llvm-svn: 28935

and the data

llvm-svn: 28934

the offset two bits to the left.

llvm-svn: 28933

llvm-svn: 28932

llvm-svn: 28931

llvm-svn: 28930

llvm-svn: 28929

llvm-svn: 28928

llvm-svn: 28927

llvm-svn: 28926

Refactor the Graph writing code to use a common implementation which is
now in lib/Support/GraphWriter.cpp. This completes the PR.

Patch by Anton Korobeynikov. Thanks, Anton!

llvm-svn: 28925

will make Shootout-C/nestedloop faster.

llvm-svn: 28924

ppc64 mode!

llvm-svn: 28923

llvm-svn: 28922

doesn't work right).

llvm-svn: 28921

llvm-svn: 28920

llvm-svn: 28919

llvm-svn: 28918

llvm-svn: 28917

last night.

llvm-svn: 28916

llvm-svn: 28915

llvm-svn: 28914

of LCSSA.  This results several times the number of unswitchings occurring on
tests such and timberwolfmc, unix-tbl, and ldecod.

llvm-svn: 28912

Simplify X86CompilationCallback: always align to 16-byte boundary; don't save EAX/EDX if unnecessary.

llvm-svn: 28910

code in sections other than ".text", including weak sections like ctors and
dtors.

llvm-svn: 28909

llvm-svn: 28908

llvm-svn: 28907

llvm-svn: 28906

llvm-svn: 28905