llvm-svn: 82495

gcc-style write-barrier api only.

llvm-svn: 82493

integer pointer.  For now just invalidate the fields of the struct.

This addresses: <rdar://problem/7185607> [RegionStore] support invalidation of bit fields using integer assignment

llvm-svn: 82492

take into consideration that the result of an invoke is only valid in
the normal dest, not the unwind dest.  This caused 'PHINode::hasConstantValue'
to return true in an invalid situation, causing mem2reg to delete a phi that
was actually needed.  This caused a crash building 483.xalancbmk.

llvm-svn: 82491

no functionality change.

llvm-svn: 82490

llvm-svn: 82489

llvm-svn: 82488

variable increment / decrement slighter high priority. 

This has major impact on some micro-benchmarks. On MultiSource/Applications
and spec tests, it's a minor win. It also reduce 256.bzip instruction count
by 8%, 55 on 164.gzip on i386 / Darwin.

llvm-svn: 82485

llvm-svn: 82483

llvm-svn: 82482

llvm-svn: 82481

llvm-svn: 82478

a nested-name-specifier that describes how to refer to that name. For
example, given:

  struct Base { int member; };
  struct Derived : Base { int member; };

the code-completion result for a member access into "Derived" will
provide both "member" to refer to Derived::member (no qualification needed) and
"Base::member" to refer to Base::member (qualification included).

llvm-svn: 82476

enumerators when either the user intentionally wrote a qualified name
(in which case we just use that nested-name-specifier to match
the user's code) or when this is the first "case" statement and we
need a qualified name to refer to an enumerator in a different scope.

llvm-svn: 82474

the base pointer, without the offset. This matches MemSDNode's
new alignment behavior, and holds more interesting information.

llvm-svn: 82473

llvm-svn: 82472

llvm-svn: 82471

loads in order to reduce register pressure.

llvm-svn: 82470

of enumeration type, providing the various unused enumerators as options.

llvm-svn: 82467

And fix a bug with the behavior of min/max instructions formed from
fcmp uge comparisons.

Also, use FiniteOnlyFPMath() for this code instead of UnsafeFPMath,
as it is more specific.

llvm-svn: 82466

PseudoSourceValue already effectively represents the offset from the
frame base, so the actual offset should not be added to it.

llvm-svn: 82465

bootstrap problems.

llvm-svn: 82464

by setPreservesCFG().

llvm-svn: 82463

helpful, and it didn't correctly handle the case of constants input
to PHIs for backedges.

llvm-svn: 82462

arrays and structs, which cannot be bitcast to integers.

llvm-svn: 82460

real work is performed within Sema. Addresses Chris's comments, but
still retains the heavyweight list-of-multimaps data structure.

llvm-svn: 82459

llvm-svn: 82456

llvm-svn: 82455

llvm-svn: 82454

llvm-svn: 82449

The machine code verifier no longer tolerates phi instructions with noop
operands. All MBBs on a phi instruction must be in the CFG.

llvm-svn: 82448

This doesn't kick in too much because of phi translation issues,
but this can be resolved in the future.

llvm-svn: 82447

llvm-svn: 82446

llvm-svn: 82444

analysis, one that does the xform.

llvm-svn: 82443

llvm-svn: 82442

assert if the setModuleInfo hasn't been called.

llvm-svn: 82441

llvm-svn: 82440

from a piece of a large store when both are in the same block.

This allows clang to compile the testcase in PR4216 to this code:

_test_bitfield:
	movl	4(%esp), %eax
	movl	%eax, %ecx
	andl	$-65536, %ecx
	orl	$32962, %eax
	andl	$40186, %eax
	orl	%ecx, %eax
	ret

This is not ideal, but is a whole lot better than the code produced
by llvm-gcc:

_test_bitfield:
	movw	$-32574, %ax
	orw	4(%esp), %ax
	andw	$-25350, %ax
	movw	%ax, 4(%esp)
	movw	7(%esp), %cx
	shlw	$8, %cx
	movzbl	6(%esp), %edx
	orw	%cx, %dx
	movzwl	%dx, %ecx
	shll	$16, %ecx
	movzwl	%ax, %eax
	orl	%ecx, %eax
	ret

and dramatically better than that produced by gcc 4.2:

_test_bitfield:
	pushl	%ebx
	call	L3
"L00000000001$pb":
L3:
	popl	%ebx
	movl	8(%esp), %eax
	leal	0(,%eax,4), %edx
	sarb	$7, %dl
	movl	%eax, %ecx
	andl	$7168, %ecx
	andl	$-7201, %ebx
	movzbl	%dl, %edx
	andl	$1, %edx
	sall	$5, %edx
	orl	%ecx, %ebx
	orl	%edx, %ebx
	andl	$24, %eax
	andl	$-58336, %ebx
	orl	%eax, %ebx
	orl	$32962, %ebx
	movl	%ebx, %eax
	popl	%ebx
	ret

llvm-svn: 82439

llvm-svn: 82438