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716 Commits

Author SHA1 Message Date
Evan Cheng
535dbf4ffd Revert 66358 for now. It's breaking povray, 450.soplex, and 456.hmmer on x86 / Darwin. 
llvm-svn: 66574
 2009-03-10 20:47:18 +00:00
Chris Lattner
93662edfb8 Fix PR3763 by using proper APInt methods instead of uint64_t's. 
llvm-svn: 66434
 2009-03-09 20:22:18 +00:00
Chris Lattner
578b634f56 implement an optimization to codegen c ? 1.0 : 2.0 as load { 2.0, 1.0 } + c*4. 
For 2009-03-07-FPConstSelect.ll we now produce:

_f:
	xorl	%eax, %eax
	testl	%edi, %edi
	movl	$4, %ecx
	cmovne	%rax, %rcx
	leaq	LCPI1_0(%rip), %rax
	movss	(%rcx,%rax), %xmm0
	ret

previously we produced:

_f:
	subl	$4, %esp
	cmpl	$0, 8(%esp)
	movss	LCPI1_0, %xmm0
	je	LBB1_2	## entry
LBB1_1:	## entry
	movss	LCPI1_1, %xmm0
LBB1_2:	## entry
	movss	%xmm0, (%esp)
	flds	(%esp)
	addl	$4, %esp
	ret

on PPC the code also improves to:

_f:
	cntlzw r2, r3
	srwi r2, r2, 5
	li r3, lo16(LCPI1_0)
	slwi r2, r2, 2
	addis r3, r3, ha16(LCPI1_0)
	lfsx f1, r3, r2
	blr 

from:

_f:
	li r2, lo16(LCPI1_1)
	cmplwi cr0, r3, 0
	addis r2, r2, ha16(LCPI1_1)
	beq cr0, LBB1_2	; entry
LBB1_1:	; entry
	li r2, lo16(LCPI1_0)
	addis r2, r2, ha16(LCPI1_0)
LBB1_2:	; entry
	lfs f1, 0(r2)
	blr 

This also improves the existing pic-cpool case from:

foo:
	subl	$12, %esp
	call	.Lllvm$1.$piclabel
.Lllvm$1.$piclabel:
	popl	%eax
	addl	$_GLOBAL_OFFSET_TABLE_ + [.-.Lllvm$1.$piclabel], %eax
	cmpl	$0, 16(%esp)
	movsd	.LCPI1_0@GOTOFF(%eax), %xmm0
	je	.LBB1_2	# entry
.LBB1_1:	# entry
	movsd	.LCPI1_1@GOTOFF(%eax), %xmm0
.LBB1_2:	# entry
	movsd	%xmm0, (%esp)
	fldl	(%esp)
	addl	$12, %esp
	ret

to:

foo:
	call	.Lllvm$1.$piclabel
.Lllvm$1.$piclabel:
	popl	%eax
	addl	$_GLOBAL_OFFSET_TABLE_ + [.-.Lllvm$1.$piclabel], %eax
	xorl	%ecx, %ecx
	cmpl	$0, 4(%esp)
	movl	$8, %edx
	cmovne	%ecx, %edx
	fldl	.LCPI1_0@GOTOFF(%eax,%edx)
	ret

This triggers a few dozen times in spec FP 2000.

llvm-svn: 66358
 2009-03-08 01:51:30 +00:00
Nate Begeman
6b41d33726 Fix a problem with DAGCombine on 64b targets where folding 
extracts + build_vector into a shuffle would fail, because the
type of the new build_vector would not be legal.  Try harder to
create a legal build_vector type.  Note: this will be totally 
irrelevant once vector_shuffle no longer takes a build_vector for
shuffle mask.

New:
_foo:
	xorps	%xmm0, %xmm0
	xorps	%xmm1, %xmm1
	subps	%xmm1, %xmm1
	mulps	%xmm0, %xmm1
	addps	%xmm0, %xmm1
	movaps	%xmm1, 0

Old:
_foo:
	xorps	%xmm0, %xmm0
	movss	%xmm0, %xmm1
	xorps	%xmm2, %xmm2
	unpcklps	%xmm1, %xmm2
	pshufd	$80, %xmm1, %xmm1
	unpcklps	%xmm1, %xmm2
	pslldq	$16, %xmm2
	pshufd	$57, %xmm2, %xmm1
	subps	%xmm0, %xmm1
	mulps	%xmm0, %xmm1
	addps	%xmm0, %xmm1
	movaps	%xmm1, 0

llvm-svn: 65791
 2009-03-01 23:44:07 +00:00
Evan Cheng
ec34226c2b Revert BuildVectorSDNode related patches: 65426, 65427, and 65296. 
llvm-svn: 65482
 2009-02-25 22:49:59 +00:00
Scott Michel
3f8637305f Introduce the BuildVectorSDNode class that encapsulates the ISD::BUILD_VECTOR 
instruction. The class also consolidates the code for detecting constant
splats that's shared across PowerPC and the CellSPU backends (and might be
useful for other backends.) Also introduces SelectionDAG::getBUID_VECTOR() for
generating new BUILD_VECTOR nodes.

llvm-svn: 65296
 2009-02-22 23:36:09 +00:00
Dan Gohman
c9cfc596a3 Fix a bug that David Greene found in the DAGCombiner's logic 
that checks whether it's safe to transform a store of a bitcast
value into a store of the original value.

llvm-svn: 65201
 2009-02-20 23:29:13 +00:00
Scott Michel
4c5fa6c982 Remove trailing whitespace to reduce later commit patch noise. 
(Note: Eventually, commits like this will be handled via a pre-commit hook that
 does this automagically, as well as expand tabs to spaces and look for 80-col
 violations.)

llvm-svn: 64827
 2009-02-17 22:15:04 +00:00
Dale Johannesen
1580ab6b7f Remove more non-DebugLoc getNode variants. Use 
getCALLSEQ_{END,START} to permit passing no DebugLoc
there.  UNDEF doesn't logically have DebugLoc; add
getUNDEF to encapsulate this.

llvm-svn: 63978
 2009-02-06 23:05:02 +00:00
Dale Johannesen
c405486235 Remove more non-DebugLoc versions of getNode. 
llvm-svn: 63969
 2009-02-06 21:50:26 +00:00
Dale Johannesen
84498c427e Propagation in TargetLowering. Includes passing a DL 
into SimplifySetCC which gets called elsewhere.

llvm-svn: 63583
 2009-02-03 00:47:48 +00:00
Duncan Sands
cac6cf74f9 Fix PR3453 and probably a bunch of other potential 
crashes or wrong code with codegen of large integers:
eliminate the legacy getIntegerVTBitMask and
getIntegerVTSignBit methods, which returned their
value as a uint64_t, so couldn't handle huge types.

llvm-svn: 63494
 2009-02-01 18:06:53 +00:00
Bill Wendling
518ecfa97c Forgot some more DebugLoc propagations. 
llvm-svn: 63493
 2009-02-01 11:19:36 +00:00
Duncan Sands
74179a9dde Fix PR3401: when using large integers, the type 
returned by getShiftAmountTy may be too small
to hold shift values (it is an i8 on x86-32).
Before and during type legalization, use a large
but legal type for shift amounts: getPointerTy;
afterwards use getShiftAmountTy, fixing up any
shift amounts with a big type during operation
legalization.  Thanks to Dan for writing the
original patch (which I shamelessly pillaged).

llvm-svn: 63482
 2009-01-31 15:50:11 +00:00
Bill Wendling
679d743429 Don't use DebugLoc::getUnknownLoc(). Default to something hopefully sensible. 
llvm-svn: 63473
 2009-01-31 03:12:48 +00:00
Bill Wendling
33e437d960 More DebugLoc propagation. 
llvm-svn: 63454
 2009-01-30 23:59:18 +00:00
Bill Wendling
191c1bcb0c More DebugLoc propagation. 
llvm-svn: 63452
 2009-01-30 23:36:47 +00:00
Bill Wendling
061530382c More DebugLoc propagation in LOAD etc. methods. 
llvm-svn: 63451
 2009-01-30 23:27:35 +00:00
Bill Wendling
8038d99071 More DebugLoc propagation in floating-point methods. 
llvm-svn: 63446
 2009-01-30 23:15:49 +00:00
Bill Wendling
cebc5ac36d Standardize comments about folding xforms. 
llvm-svn: 63443
 2009-01-30 23:10:18 +00:00
Bill Wendling
67737da99b Get rid of the non-DebugLoc-ified getNOT() method. 
llvm-svn: 63442
 2009-01-30 23:03:19 +00:00
Bill Wendling
b3ece8cc6f Propagate debug loc info for some FP arithmetic methods. 
llvm-svn: 63441
 2009-01-30 22:57:07 +00:00
Bill Wendling
00f0882476 Propagate debug loc info for some FP arithmetic methods. 
llvm-svn: 63440
 2009-01-30 22:53:48 +00:00
Bill Wendling
bfa7cfd7c7 Propagate debug loc info for BIT_CONVERT. 
llvm-svn: 63439
 2009-01-30 22:44:24 +00:00
Bill Wendling
c05f48a66d Propagate debug loc info for more *_EXTEND methods. 
llvm-svn: 63437
 2009-01-30 22:33:24 +00:00
Bill Wendling
ca9c42acf5 Propagate debug loc info for ANY_EXTEND. 
llvm-svn: 63436
 2009-01-30 22:27:33 +00:00
Bill Wendling
5c326f6512 Propagate debug loc info for some of the *_EXTEND functions. 
llvm-svn: 63434
 2009-01-30 22:23:15 +00:00
Bill Wendling
de0da1da41 - Propagate debug loc info for SELECT. 
- Added xform for (select X, 1, Y) and (select X, Y, 0), which was commented on,
  but missing.

llvm-svn: 63428
 2009-01-30 22:02:18 +00:00
Bill Wendling
18aa03303b Propagate debug loc info for Shifts. 
llvm-svn: 63424
 2009-01-30 21:37:17 +00:00
Bill Wendling
8f8bb57472 Propagate debug loc info for XOR and MatchRotate. 
llvm-svn: 63420
 2009-01-30 21:14:50 +00:00
Bill Wendling
d62cec3ba3 Propagate debug loc info for OR. Also clean up some comments. 
llvm-svn: 63419
 2009-01-30 20:59:34 +00:00
Bill Wendling
e74546802d Perform obvious constant arithmetic folding. 
llvm-svn: 63417
 2009-01-30 20:50:00 +00:00
Bill Wendling
4f61644d4c Propagate debug loc info for AND. Also clean up some comments. 
llvm-svn: 63416
 2009-01-30 20:43:18 +00:00
Bill Wendling
79d8e31a5a Propagate debug loc info in SimplifyBinOpWithSameOpcodeHands. 
llvm-svn: 63411
 2009-01-30 19:25:47 +00:00
Bill Wendling
4d923185fc Propagate debug loc info in SimplifyNodeWithTwoResults. 
llvm-svn: 63376
 2009-01-30 03:08:40 +00:00
Bill Wendling
7067a571ce Propagate debug loc info for MULHS. 
llvm-svn: 63375
 2009-01-30 03:00:18 +00:00
Bill Wendling
031d7dcfe2 Propagate debug loc info for SREM and UREM. 
llvm-svn: 63374
 2009-01-30 02:57:00 +00:00
Bill Wendling
f4506379ae Propagate debug loc info for UDIV. 
llvm-svn: 63373
 2009-01-30 02:55:25 +00:00
Bill Wendling
532bb33a10 Propagate debug loc info for SDIV. 
llvm-svn: 63372
 2009-01-30 02:52:17 +00:00
Bill Wendling
577589aa4a Forgot to propagate debug loc info here. 
llvm-svn: 63371
 2009-01-30 02:49:26 +00:00
Bill Wendling
ff10c16660 Propagate debug loc info for MUL. 
llvm-svn: 63369
 2009-01-30 02:45:56 +00:00
Bill Wendling
a7791b0e4e Propagate debug loc info in SUB. 
llvm-svn: 63368
 2009-01-30 02:42:10 +00:00
Bill Wendling
665afce822 Propagate debug loc info in ADDC and ADDE. 
llvm-svn: 63367
 2009-01-30 02:38:00 +00:00
Bill Wendling
1ad9d3d9d1 Propagate debug loc info in DAG combine's "ADD". 
llvm-svn: 63366
 2009-01-30 02:31:17 +00:00
Bill Wendling
030f0fced8 - Propagate debug loc info in combineSelectAndUse(). 
- Modify ReassociateOps so that the resulting SDValue is what the comment claims
  it is.

llvm-svn: 63365
 2009-01-30 02:23:43 +00:00
Bill Wendling
31986c393f Propagate debug location info for the token factor. 
llvm-svn: 63355
 2009-01-30 01:13:16 +00:00
Bill Wendling
8165903969 Add DebugLoc propagation to some of the methods in DAG combiner. 
llvm-svn: 63350
 2009-01-30 00:45:56 +00:00
Dan Gohman
9d120d6d8f Make x86's BT instruction matching more thorough, and add some 
dagcombines that help it match in several more cases. Add
several more cases to test/CodeGen/X86/bt.ll. This doesn't
yet include matching for BT with an immediate operand, it
just covers more register+register cases.

llvm-svn: 63266
 2009-01-29 01:59:02 +00:00
Dan Gohman
bc43253a91 Make isOperationLegal do what its name suggests, and introduce a 
new isOperationLegalOrCustom, which does what isOperationLegal
previously did.

Update a bunch of callers to use isOperationLegalOrCustom
instead of isOperationLegal. In some case it wasn't obvious
which behavior is desired; when in doubt I changed then to
isOperationLegalOrCustom as that preserves their previous
behavior.

This is for the second half of PR3376.

llvm-svn: 63212
 2009-01-28 17:46:25 +00:00
Dan Gohman
0400e83ed8 Add an assertion to the form of SelectionDAG::getConstant that takes 
a uint64_t to verify that the value is in range for the given type,
to help catch accidental overflow. Fix a few places that relied on
getConstant implicitly truncating the value.

llvm-svn: 63128
 2009-01-27 20:39:34 +00:00