llvm-svn: 52487

shuffle could be skipped.  The check is invalid because the loop index i 
doesn't correspond to the element actually inserted. The correct check is
already done a few lines earlier, for whether the element is already in 
the right spot, so this shouldn't have any effect on the codegen for 
code that was already correct.

llvm-svn: 52486

llvm-svn: 52485

llvm-svn: 52483

llvm-svn: 52482

llvm-svn: 52481

llvm-svn: 52480

llvm-svn: 52479

llvm-svn: 52478

llvm-svn: 52477

add new instructions.

llvm-svn: 52475

Remove this test until the corresponding patch is reapplied because it's causing make check to crash for some people.

llvm-svn: 52473

llvm-svn: 52472

Add local PRE to GVN.  This only operates in cases where it would not increase code size, namely when the instantiated expression
would only need to be created in one predecessor.

llvm-svn: 52471

llvm-svn: 52470

According to DWARF-2 specification, the line information is provided through an offset in the .debug_line section.
Replace the label reference that is used with a section offset.

llvm-svn: 52468

llvm-svn: 52467

llvm-svn: 52466

Revert r52459, which was causing an infinite loop or massive slowdown on MultiSource/Applications/SPASS, and possibly others as well.
Please reapply once this is fixed.

llvm-svn: 52465

llvm-svn: 52464

function, and make use of it in several places.

llvm-svn: 52463

llvm-svn: 52461

llvm-svn: 52460

dependencies between return values and/or arguments. Also make the handling of
arguments and return values the same.

The pass now looks properly inside returned structs, but only at the first                                                                                     
level (ie, not inside nested structs).

Also add a testcase for testing various variations of (multiple) dead rerturn
values.

llvm-svn: 52459

time. Sorry for the trouble!

This time, also add a testcase, which I should have done in the first place...

llvm-svn: 52455

llvm-svn: 52454

commit after this).

llvm-svn: 52453

llvm-svn: 52452

llvm-svn: 52451

llvm-svn: 52450

other) feature information. The workaround is inelegant and could be cleaned up
if this information were available some other way (say, in the IR).

llvm-svn: 52447

llvm-svn: 52446

Added a new ProgramPoint: PostPurgeDeadSymbols.  This new program point distinguishes between the cases when we just evaluated the transfer function of a Stmt* (PostStmt) or performed a load (PostLoad).  This solves a caching bug observed in a recent bug report.

llvm-svn: 52443

llvm-svn: 52442

llvm-svn: 52441

implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll.

llvm-svn: 52440

llvm-svn: 52439

llvm-svn: 52438

llvm-svn: 52437

isn't actually called yet.

llvm-svn: 52435