scheduled in multiple regions, liveness data used by the
anti-dependence breaker is carried from one region to the next, however
the information reflects the state of the instructions before scheduling.
After scheduling, there may be new live range overlaps. Handle this by
pessimizing the liveness data carried between regions to the point where
it will be conservatively correct now matter how the earlier region is
scheduled. This fixes a miscompilation in 176.gcc with the post-RA
scheduler enabled.

llvm-svn: 66558

llvm-svn: 66554

 - Add unbuffered flag to raw_ostream, forwarded by raw_fd_ostream and
   used by raw_stderr_ostream.

llvm-svn: 66545

Also fixed a punctuation error in the header comment.
This fixes PR3775.

llvm-svn: 66542

to obtain debug info about them.
Introduce helpers to access debug info for global variables. Also introduce a
helper that works for both local and global variables.

llvm-svn: 66541

llvm-svn: 66540

If a function is marked alwaysinline, it must be inlined (possibly for correctness). Do so even if the callee has dynamic alloca and the caller doesn't.

llvm-svn: 66539

format strings with the standard ${:foo} syntax.

llvm-svn: 66527

llvm-svn: 66515

llvm-svn: 66508

llvm-svn: 66490

if needed. This simplifies the code a little, and is needed for an
upcoming refactoring.

llvm-svn: 66479

allocating memory in the JIT.  This is insanely inefficient, but
hey, most people implement their own memory managers anyway.

Patch by Eric Yew!

llvm-svn: 66472

llvm-svn: 66471

where memory access types are needed.

llvm-svn: 66470

llvm-svn: 66469

llvm-svn: 66467

Use VoidTy instead, to be properly conservative.

llvm-svn: 66463

of an instruction into a helper function.

llvm-svn: 66460

llvm-svn: 66454

have to be done twice.

llvm-svn: 66449

llvm-svn: 66446

before it does any processing.

llvm-svn: 66443

ARM target now also recognize triplets like thumbv6-apple-darwin and set thumb mode and arch subversion. Eventually thumb triplets will go way and replaced with function notes.

llvm-svn: 66435

llvm-svn: 66434

ARM isLegalAddressImmediate should check if type is a simple type now that optimizer can create values of funky scalar types.

llvm-svn: 66429

Yet another case where the spiller marked two uses of the same register on the same instruction as kill. This fixes PR3706.

llvm-svn: 66428

be needed now that these intrinsics are marked
as not accessing memory.

llvm-svn: 66420

existed was for llvm-gcc 3.4 (which used the __main hack) which 
is really really long dead.

llvm-svn: 66417

whether a global is dead or not.  This should fix PR3749 - linker adds 
spurious use to appending globals.  I can't reasonably add a testcase
for this, because the bc writer/reader strip dead constant users.

llvm-svn: 66404

llvm-svn: 66403

llvm-svn: 66399

hopefully no functionality change.

llvm-svn: 66398

on the number of times a std::string is created and copied.

llvm-svn: 66396

llvm-svn: 66395

validate an invariant so that the asmparser rejects a bad construct
instead of the verifier.  Before:

llvm-as: assembly parsed, but does not verify as correct!
Invalid struct return type!
i64 (%struct.Type*, %struct.Type*)* @foo

after:

llvm-as: t.ll:5:8: functions with 'sret' argument must return void
define i64 @foo(%struct.Type* noalias nocapture sret %agg.result, %struct.Type* nocapture byval %t) nounwind {
       ^


Second, check that void is only used where allowed (in function return types) not in
arbitrary places, fixing PR3747 - Crash in llvm-as with void field in struct.  We
now reject that example with:

$ llvm-as t.ll
llvm-as: t.ll:1:12: struct element can not have void type
%x = type {void}
           ^

llvm-svn: 66394

by checking that the top-level type of a gep is sized. This
causes us to reject the example with:

llvm-as: t2.ll:2:16: invalid getelementptr indices
getelementptr i32()* null, i32 1
              ^

llvm-svn: 66393

llvm-svn: 66386

llvm-svn: 66384

llvm-svn: 66382