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

llvm-svn: 52434

We don't want to find dependencies within the same block in this case.  It leads to incorrect results because
we're detecting something at or after the call we're querying on.

llvm-svn: 52433

index value.

llvm-svn: 52432

llvm-svn: 52431

llvm-svn: 52430

llvm-svn: 52429

llvm-svn: 52426

llvm-svn: 52425

such as those created by clone(), to a basic block.

llvm-svn: 52424

llvm-svn: 52423

Patch by David Chisnall!

llvm-svn: 52422

It's not safe to remove SUBREG_TO_REG that looks like identity copies, e.g. movl %eax, %eax on x86-64 actually does a zero-extend.

llvm-svn: 52421

llvm-svn: 52420

llvm-svn: 52419

Patch by Gary Benson!

llvm-svn: 52418

Patch by Filipe Cabecinhas

llvm-svn: 52417

llvm-svn: 52415

llvm-svn: 52414

Spotted by Nick Lewycky.

llvm-svn: 52411

rather than bundling them together.  Rename FloatToInt
to PromoteFloat (better, if not perfect).  Reorganize
files by types rather than by operations.

llvm-svn: 52408

llvm-svn: 52403

llvm-svn: 52402

llvm-svn: 52401

llvm-svn: 52400

llvm-svn: 52399

llvm-svn: 52398

speaking these are not constant values. However, when a function always returns
one of its arguments, then from the point of view of each caller the return
value is constant (or at least a known value) and can be replaced.

llvm-svn: 52397

individually.

Also learn IPConstProp how returning first class aggregates work, in addition
to old style multiple return instructions.

Modify the return-constants testscase to confirm this behaviour.

llvm-svn: 52396