llvm-svn: 102463

llvm-svn: 102456

- Catch more further dag combine opportunities as result of operand promotion, e.g. (i32 anyext (i16 trunc (i32 x))) -> (i32 x)

llvm-svn: 102455

Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges.
This patch fixes bug (PR6894) introduced by previous version of this patch.

llvm-svn: 102454

llvm-svn: 102453

should fix some "g++.dg-struct-layout-1" failures, 
rdar://7886017

llvm-svn: 102421

llvm-svn: 102418

llvm-svn: 102417

of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.

llvm-svn: 102410

*not* declarations to *not* be placed in the "preserve" list.
<rdar://problem/7870735>

llvm-svn: 102405

in ISel fixed it.

llvm-svn: 102404

add a version of createLowerInvokePass that allows the client
to specify whether it wants "expensive" or "cheap" lowering.

Patch by Alex Mac!

llvm-svn: 102402

llvm-svn: 102401

otherwise labels get incorrectly merged.  We handled this by emitting a 
".byte 0", but this isn't correct on thumb/arm targets where the text segment
needs to be a multiple of 2/4 bytes.  Handle this by emitting a noop.  This
is more gross than it should be because arm/ppc are not fully mc'ized yet.

This fixes rdar://7908505

llvm-svn: 102400

traps flowing through memory references, add some text to
better cover phi nodes and externally-visible side effects,
add an example of instructions being control-dependent
on a trap value, and reword some of the existing trap rules.

llvm-svn: 102399

Radar 7896289

llvm-svn: 102396

to print the operand.

llvm-svn: 102395

llvm-svn: 102394

doesn't dominate the header is needed, don't check whether the increment
expression has computable loop evolution. While the operands of an
addrec are required to be loop-invariant, they're not required to 
dominate any part of the loop. This fixes PR6914.

llvm-svn: 102389

llvm-svn: 102387

intrinsics have volatile semantics in addition to the load and store
instructions.  

llvm-svn: 102384

onto control-dependent instructions.

llvm-svn: 102381

llvm-svn: 102380

llvm-svn: 102378

llvm-svn: 102376

llvm-svn: 102373

produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.

llvm-svn: 102372

DBG_VALUE, and a cautionary comment.

llvm-svn: 102371

llvm-svn: 102368

llvm-svn: 102366

alignment of globals with a specified alignment, we fix
common variables to obey their alignment.  Add a comment
explaining why this behavior is important.

llvm-svn: 102365

Re-enable 102323 with fix: do not update dbg_value's with incorrect frame indices when the live interval are being re-materialized.

llvm-svn: 102361

llvm-svn: 102359

llvm-svn: 102358

llvm-svn: 102354

SSAUpdater.  I'm going to try to refactor this to share most of the code
between them.

llvm-svn: 102353

llvm-svn: 102352

llvm-svn: 102327

llvm-svn: 102326

llvm-svn: 102325