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Author SHA1 Message Date
Bill Wendling
8a7258d771 Fix whitespaces. No functionality changes. 
llvm-svn: 112421
 2010-08-29 11:31:07 +00:00
Chris Lattner
875b659115 Stop explicitly scheduling domfrontier before the loop passes, 
since none of them use it.  With this, we now only run 
domfrontier (an N^2 analysis) 3 times at clang -O3: once for 
"early" per-function cleanup, once at the start of the
per-function pipeline to support SRoA, and once late because
the EHPrepare class uses it.

EHPrepare needs to stop using it, this is silly and wasteful.

llvm-svn: 112420
 2010-08-29 07:05:51 +00:00
Chris Lattner
270d50d48c licm preserves the cfg, it doesn't have to explicitly say it 
preserves domfrontier.  It does preserve AA though.

llvm-svn: 112419
 2010-08-29 07:02:56 +00:00
Chris Lattner
40ec41d1c4 now that it doesn't use the PromoteMemToReg function, LICM doesn't 
require DomFrontier.  Dropping this doesn't actually save any runs
of the pass though.

llvm-svn: 112418
 2010-08-29 06:49:44 +00:00
Chris Lattner
fe3e4cdd30 completely rewrite the memory promotion algorithm in LICM. 
Among other things, this uses SSAUpdater instead of 
PromoteMemToReg.

llvm-svn: 112417
 2010-08-29 06:43:52 +00:00
Bob Wilson
807d004452 Remove NEON vaddl, vaddw, vsubl, and vsubw intrinsics. Instead, use llvm 
IR add/sub operations with one or both operands sign- or zero-extended.
Auto-upgrade the old intrinsics.

llvm-svn: 112416
 2010-08-29 05:57:34 +00:00
Chris Lattner
9921d9c3c1 use getUniqueExitBlocks instead of a manual set. 
llvm-svn: 112412
 2010-08-29 05:12:21 +00:00
Eli Friedman
6ccafafe61 A couple of small missed optimizations. 
llvm-svn: 112411
 2010-08-29 05:07:40 +00:00
Chris Lattner
2133f877c6 reimplement LICM::sink to use SSAUpdater instead of PromoteMemToReg. 
This leads to much simpler code.

llvm-svn: 112410
 2010-08-29 04:55:06 +00:00
Chris Lattner
fac07b1dca implement SSAUpdater::RewriteUseAfterInsertions, a helpful form of RewriteUse. 
llvm-svn: 112409
 2010-08-29 04:54:06 +00:00
Chris Lattner
24927beaff remove dead proto 
llvm-svn: 112408
 2010-08-29 04:53:24 +00:00
Chris Lattner
65ce6da2f1 reduce indentation in LICM::sink by using early exits, use 
getUniqueExitBlocks instead of getExitBlocks and a manual
set to eliminate dupes.

llvm-svn: 112405
 2010-08-29 04:28:20 +00:00
Chris Lattner
4928fe010e modernize this pass a bit: use efficient set/map and reduce indentation. 
llvm-svn: 112404
 2010-08-29 04:23:04 +00:00
Duncan Sands
e7a00e86ec Flesh out the list of things I've worked on. 
llvm-svn: 112403
 2010-08-29 04:22:35 +00:00
Chris Lattner
c8947a83e3 when merging two alias sets, the result set is volatile if either 
of the sets is volatile.  We were dropping the volatile bit of the
merged in set, leading (luckily) to assertions in cases like 
PR7535.  I cannot produce a testcase that repros with opt, but this
is obviously correct.

llvm-svn: 112402
 2010-08-29 04:14:47 +00:00
Chris Lattner
741da104b4 more cleanup 
llvm-svn: 112401
 2010-08-29 04:13:43 +00:00
Chris Lattner
db816c533c clean this up 
llvm-svn: 112400
 2010-08-29 04:06:55 +00:00
Bill Wendling
6d105ce757 - Add a parameter to T2I_bin_irs for those patterns which set the S bit. 
- Create T2I_bin_sw_irs to be like T2I_bin_w_irs, but that it sets the S bit.

llvm-svn: 112399
 2010-08-29 03:55:31 +00:00
Chris Lattner
5f911e6fe9 merge a bunch of shuffle tests into sse2.ll 
llvm-svn: 112398
 2010-08-29 03:19:04 +00:00
Chris Lattner
646fee99c3 add a bunch more common shuffles to the instprinter. 
llvm-svn: 112397
 2010-08-29 03:08:08 +00:00
Chris Lattner
c2ef3180a8 add some nounwind's 
llvm-svn: 112396
 2010-08-29 03:07:47 +00:00
Bill Wendling
8ad57ff92e Name ANDflag to ANDS, which is less stupid. 
llvm-svn: 112395
 2010-08-29 03:06:09 +00:00
Bill Wendling
6e586677a7 File missing from last commit. 
llvm-svn: 112394
 2010-08-29 03:02:28 +00:00
Bill Wendling
385ad1516f Create an ARMISD::AND node. This node is exactly like the "ARM::AND" node, but 
it sets the CPSR register.

llvm-svn: 112393
 2010-08-29 03:02:11 +00:00
NAKAMURA Takumi
cf055a2aae Minor change. 
This is test for git svn dcommit

llvm-svn: 112389
 2010-08-28 21:12:51 +00:00
Chris Lattner
56bc8ba493 I have manually decoded the imm field of an insertps one too many 
times.  This patch causes llc and llvm-mc (which both default to
verbose-asm) to print out comments after a few common shuffle 
instructions which indicates the shuffle mask, e.g.:

	insertps	$113, %xmm3, %xmm0     ## xmm0 = zero,xmm0[1,2],xmm3[1]
	unpcklps	%xmm1, %xmm0    ## xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
	pshufd	$1, %xmm1, %xmm1        ## xmm1 = xmm1[1,0,0,0]

This is carefully factored to keep the information extraction (of the
shuffle mask) separate from the printing logic.  I plan to move the
extraction part out somewhere else at some point for other parts of
the x86 backend that want to introspect on the behavior of shuffles.

llvm-svn: 112387
 2010-08-28 20:42:31 +00:00
Chris Lattner
b6eee35ca6 fixme accomplished 
llvm-svn: 112386
 2010-08-28 20:40:28 +00:00
Chris Lattner
0643b5f1f1 tidy up 
llvm-svn: 112385
 2010-08-28 20:34:35 +00:00
NAKAMURA Takumi
415a2a0a9b Add me to the "blame list"! 
And it is my 1st test commit.

llvm-svn: 112384
 2010-08-28 20:24:43 +00:00
Dan Gohman
d499f5cbb9 Remove obsolete keywords which are no longer relevant. 
llvm-svn: 112382
 2010-08-28 20:14:05 +00:00
Dan Gohman
d8226c08e0 Remove unions from the vim syntax highlighting. 
llvm-svn: 112381
 2010-08-28 20:11:28 +00:00
Chris Lattner
8cb4abbc0e fix the buildvector->insertp[sd] logic to not always create a redundant 
insertp[sd] $0, which is a noop.  Before:

_f32:                                   ## @f32
	pshufd	$1, %xmm1, %xmm2
	pshufd	$1, %xmm0, %xmm3
	addss	%xmm2, %xmm3
	addss	%xmm1, %xmm0
                                        ## kill: XMM0<def> XMM0<kill> XMM0<def>
	insertps	$0, %xmm0, %xmm0
	insertps	$16, %xmm3, %xmm0
	ret

after:

_f32:                                   ## @f32
	movdqa	%xmm0, %xmm2
	addss	%xmm1, %xmm2
	pshufd	$1, %xmm1, %xmm1
	pshufd	$1, %xmm0, %xmm3
	addss	%xmm1, %xmm3
	movdqa	%xmm2, %xmm0
	insertps	$16, %xmm3, %xmm0
	ret

The extra movs are due to a random (poor) scheduling decision.

llvm-svn: 112379
 2010-08-28 17:59:08 +00:00
Chris Lattner
c3b630d64b fix the BuildVector -> unpcklps logic to not do pointless shuffles 
when the top elements of a vector are undefined.  This happens all
the time for X86-64 ABI stuff because only the low 2 elements of
a 4 element vector are defined.  For example, on:

_Complex float f32(_Complex float A, _Complex float B) {
  return A+B;
}

We used to produce (with SSE2, SSE4.1+ uses insertps):

_f32:                                   ## @f32
	movdqa	%xmm0, %xmm2
	addss	%xmm1, %xmm2
	pshufd	$16, %xmm2, %xmm2
	pshufd	$1, %xmm1, %xmm1
	pshufd	$1, %xmm0, %xmm0
	addss	%xmm1, %xmm0
	pshufd	$16, %xmm0, %xmm1
	movdqa	%xmm2, %xmm0
	unpcklps	%xmm1, %xmm0
	ret

We now produce:

_f32:                                   ## @f32
	movdqa	%xmm0, %xmm2
	addss	%xmm1, %xmm2
	pshufd	$1, %xmm1, %xmm1
	pshufd	$1, %xmm0, %xmm3
	addss	%xmm1, %xmm3
	movaps	%xmm2, %xmm0
	unpcklps	%xmm3, %xmm0
	ret

This implements rdar://8368414

llvm-svn: 112378
 2010-08-28 17:28:30 +00:00
Chris Lattner
7fa5fa1207 improve comments in the unpcklps generating logic, introduce 
a new EltStride variable instead of reusing NumElems variable
for a non-obvious purpose.  No functionality change.

llvm-svn: 112377
 2010-08-28 17:15:43 +00:00
Michael J. Spencer
5cb73a9fb8 Don't cast Win32 FILETIME structs to int64. Patch by Dimitry Andric! 
According to the Microsoft documentation here:
http://msdn.microsoft.com/en-us/library/ms724284%28VS.85%29.aspx

this cast used in lib/System/Win32/Path.inc:

__int64 ft = *reinterpret_cast<__int64*>(&fi.ftLastWriteTime);

should not be done.  The documentation says: "Do not cast a pointer to a
FILETIME structure to either a ULARGE_INTEGER* or __int64* value because
it can cause alignment faults on 64-bit Windows."

llvm-svn: 112376
 2010-08-28 16:39:32 +00:00
Chris Lattner
d16c80e27f remove the MSIL backend. It isn't maintained, is buggy, has no testcases 
and hasn't kept up with ToT.  Approved by Anton.

llvm-svn: 112375
 2010-08-28 16:33:36 +00:00
Benjamin Kramer
92e13eeec0 Update ocaml test. 
llvm-svn: 112364
 2010-08-28 10:29:41 +00:00
Benjamin Kramer
4c15ccc237 Remove unions from the ocaml bindings. 
llvm-svn: 112363
 2010-08-28 09:47:42 +00:00
Bob Wilson
956e07b985 Use pseudo instructions for VST1 and VST2. 
llvm-svn: 112357
 2010-08-28 05:12:57 +00:00
Chris Lattner
ecf276b787 remove unions from LLVM IR. They are severely buggy and not 
being actively maintained, improved, or extended.

llvm-svn: 112356
 2010-08-28 04:09:24 +00:00
Chris Lattner
4b49ada02c remove the ABCD and SSI passes. They don't have any clients that 
I'm aware of, aren't maintained, and LVI will be replacing their value.
nlewycky approved this on irc.

llvm-svn: 112355
 2010-08-28 03:51:24 +00:00
Chris Lattner
e7afb6fbb0 remove dead proto 
llvm-svn: 112354
 2010-08-28 03:45:03 +00:00
Chris Lattner
7a86b354fc more dead thing zapping. 
llvm-svn: 112353
 2010-08-28 03:43:50 +00:00
Chris Lattner
faae20ef23 zap dead method 
llvm-svn: 112352
 2010-08-28 03:42:45 +00:00
Chris Lattner
fc1da78d16 for completeness, allow undef also. 
llvm-svn: 112351
 2010-08-28 03:36:51 +00:00
Chris Lattner
b2dbdbc795 squish dead code. 
llvm-svn: 112350
 2010-08-28 03:21:03 +00:00
Chris Lattner
fcf6250d57 zap dead code 
llvm-svn: 112349
 2010-08-28 03:18:45 +00:00
Bruno Cardoso Lopes
1052e6d5d9 Clean up the logic of vector shuffles -> vector shifts. 
Also teach this logic how to handle target specific shuffles if
needed, this is necessary while searching recursively for zeroed
scalar elements in vector shuffle operands.

llvm-svn: 112348
 2010-08-28 02:46:39 +00:00
Chris Lattner
b61cf1e296 handle the constant case of vector insertion. For something 
like this:

struct S { float A, B, C, D; };

struct S g;
struct S bar() { 
  struct S A = g;
  ++A.B;
  A.A = 42;
  return A;
}

we now generate:

_bar:                                   ## @bar
## BB#0:                                ## %entry
	movq	_g@GOTPCREL(%rip), %rax
	movss	12(%rax), %xmm0
	pshufd	$16, %xmm0, %xmm0
	movss	4(%rax), %xmm2
	movss	8(%rax), %xmm1
	pshufd	$16, %xmm1, %xmm1
	unpcklps	%xmm0, %xmm1
	addss	LCPI1_0(%rip), %xmm2
	pshufd	$16, %xmm2, %xmm2
	movss	LCPI1_1(%rip), %xmm0
	pshufd	$16, %xmm0, %xmm0
	unpcklps	%xmm2, %xmm0
	ret

instead of:

_bar:                                   ## @bar
## BB#0:                                ## %entry
	movq	_g@GOTPCREL(%rip), %rax
	movss	12(%rax), %xmm0
	pshufd	$16, %xmm0, %xmm0
	movss	4(%rax), %xmm2
	movss	8(%rax), %xmm1
	pshufd	$16, %xmm1, %xmm1
	unpcklps	%xmm0, %xmm1
	addss	LCPI1_0(%rip), %xmm2
	movd	%xmm2, %eax
	shlq	$32, %rax
	addq	$1109917696, %rax       ## imm = 0x42280000
	movd	%rax, %xmm0
	ret

llvm-svn: 112345
 2010-08-28 01:50:57 +00:00
Duncan Sands
604b706b87 Straighten out any triple strings passed on the command line before 
they hit the rest of the system.

llvm-svn: 112344
 2010-08-28 01:30:02 +00:00