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Author SHA1 Message Date
Daniel Dunbar
63f7a3a108 MC/Mach-O/ARM: Clone off an ARM version of RecordScatteredRelocation until I figure out how it is supposed to work. 
llvm-svn: 122410
 2010-12-22 16:45:29 +00:00
Daniel Dunbar
985567aebc MC/Mach-O: Return to reporting errors if we see unexpected fixup kinds. 
llvm-svn: 122409
 2010-12-22 16:32:41 +00:00
Daniel Dunbar
d85743ca7a MC/Mach-O/ARM: Recognize generic _Data_N fixup kinds. 
llvm-svn: 122408
 2010-12-22 16:32:37 +00:00
Daniel Dunbar
e44a2c1166 MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations. 
llvm-svn: 122407
 2010-12-22 16:19:24 +00:00
Daniel Dunbar
55eff2421b MC/Mach-O/ARM: Fix thinko. 
llvm-svn: 122406
 2010-12-22 16:19:20 +00:00
Rafael Espindola
c05eac148d Use references and simplify. 
llvm-svn: 122405
 2010-12-22 16:11:57 +00:00
Rafael Espindola
7c995a90fc Simplify the handling of .size expressions. 
llvm-svn: 122404
 2010-12-22 16:03:00 +00:00
Daniel Dunbar
17e19b2d45 MC/Mach-O/ARM: Stub out RecordARMRelocation, which is mostly a copy of 
RecordRelocation with lots of FIXMEs.

llvm-svn: 122402
 2010-12-22 13:50:05 +00:00
Daniel Dunbar
8db4843cd3 Simplify. 
llvm-svn: 122401
 2010-12-22 13:49:56 +00:00
Daniel Dunbar
bc2bf96e91 MC/Mach-O: Split out RecordARMRelocation for now, it is weird enough it isn't 
clear how to keep in the generic path (yet).
 - Will revisit when it actually works.

llvm-svn: 122400
 2010-12-22 13:49:43 +00:00
Duncan Sands
922251757b Add a generic expansion transform: A op (B op' C) -> (A op B) op' (A op C) 
if both A op B and A op C simplify.  This fires fairly often but doesn't
make that much difference.  On gcc-as-one-file it removes two "and"s and
turns one branch into a select.

llvm-svn: 122399
 2010-12-22 13:36:08 +00:00
Che-Liang Chiou
e73ad4387e ptx: add ld instruction and test 
llvm-svn: 122398
 2010-12-22 10:38:51 +00:00
Duncan Sands
9b28a173fe Add some statistics, good for understanding how much more powerful 
instcombine is compared to instsimplify.

llvm-svn: 122397
 2010-12-22 09:40:51 +00:00
Oscar Fuentes
898b75ee39 Fixes file extension for loadable modules on OS X. 
Patch by Wesley Peck!

llvm-svn: 122395
 2010-12-22 08:30:17 +00:00
Chris Lattner
04ef853e23 Fix a bug in ReduceLoadWidth that wasn't handling extending 
loads properly.  We miscompiled the testcase into:

_test:                                  ## @test
	movl	$128, (%rdi)
	movzbl	1(%rdi), %eax
	ret

Now we get a proper:

_test:                                  ## @test
	movl	$128, (%rdi)
	movsbl	(%rdi), %eax
	movzbl	%ah, %eax
	ret

This fixes PR8757.

llvm-svn: 122392
 2010-12-22 08:02:57 +00:00
Chris Lattner
35fcc63498 more cleanups, move a check for "roundedness" earlier to reject 
unhanded cases faster and simplify code.

llvm-svn: 122391
 2010-12-22 08:01:44 +00:00
Chris Lattner
60dcb2b5c2 reduce indentation and improve comments, no functionality change. 
llvm-svn: 122389
 2010-12-22 07:36:50 +00:00
Wesley Peck
2759b7bc98 Don't generate carry bit when loading immediate values on the Microblaze. 
llvm-svn: 122385
 2010-12-22 01:29:32 +00:00
Wesley Peck
0d64db9772 Add support for some of the LLVM atomic operations to the MBlaze backend. 
llvm-svn: 122384
 2010-12-22 01:15:01 +00:00
Wesley Peck
32c95e5ef4 Modeling the carry bit in the MSR register of the MicroBlaze. 
llvm-svn: 122381
 2010-12-22 00:53:07 +00:00
Wesley Peck
fc577ca406 Fix a regression introduced into the MBlaze delay slot filler. 
llvm-svn: 122379
 2010-12-22 00:22:59 +00:00
Owen Anderson
b4f1511864 Give GVN back the ability to perform simple conditional propagation on conditional branch values. 
I still think that LVI should be handling this, but that capability is some ways off in the future,
and this matters for some significant benchmarks.

llvm-svn: 122378
 2010-12-21 23:54:34 +00:00
Matt Beaumont-Gay
b03146b50a GCC objects to the two sides of a conditional expression having different enum 
types, but they're just getting converted to unsigned anyway, so cast first
(and ask questions later).

llvm-svn: 122377
 2010-12-21 23:43:23 +00:00
Owen Anderson
1ee218de0e Remove dead code. 
llvm-svn: 122371
 2010-12-21 22:31:24 +00:00
Andrew Trick
afec190a28 In DelayForLiveRegsBottomUp, handle instructions that read and write 
the same physical register. Simplifies the fix from the previous
checkin r122211.

llvm-svn: 122370
 2010-12-21 22:27:44 +00:00
Andrew Trick
1e3ad9f721 whitespace 
llvm-svn: 122368
 2010-12-21 22:25:04 +00:00
Dale Johannesen
e0fb87c3d7 Reapply 122353-122355 with fixes. 122354 was wrong; 
the shift type was needed one place, the shift count
type another.  The transform in 123555 had the same
problem.

llvm-svn: 122366
 2010-12-21 21:55:50 +00:00
Benjamin Kramer
369872edfc Add some x86 specific dagcombines for conditional increments. 
(add Y, (sete  X, 0)) -> cmp X, 1; adc  0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete  X, 0), Y) -> cmp X, 1; sbb  0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y

for
  unsigned foo(unsigned a, unsigned b) {
    if (a == 0) b++;
    return b;
  }
we now get:
  foo:
    cmpl  $1, %edi
    movl  %esi, %eax
    adcl  $0, %eax
    ret
instead of:
  foo:
    testl %edi, %edi
    sete  %al
    movzbl  %al, %eax
    addl  %esi, %eax
    ret

llvm-svn: 122364
 2010-12-21 21:41:44 +00:00
Benjamin Kramer
fd119319ea GVN's Expression is not POD-like (it contains a SmallVector). Simplify code while at it. 
llvm-svn: 122362
 2010-12-21 21:30:19 +00:00
Dale Johannesen
972aba543a Revert 122353-122355 for the moment, they broke stuff. 
llvm-svn: 122360
 2010-12-21 21:22:27 +00:00
Rafael Espindola
a1091c31ba Simplify EvaluateAsAbsolute now that EvaluateAsRelocatableImpl does all 
the folding it can.

llvm-svn: 122359
 2010-12-21 20:51:42 +00:00
Rafael Espindola
3d9afa3c44 Don't relax org or align. They change size as the relaxation happens, but they 
are not actually relaxed. For example, a section with only alignments will never
needs relaxation.

llvm-svn: 122356
 2010-12-21 20:35:18 +00:00
Dale Johannesen
39186cfb0b Add a new transform to DAGCombiner. 
llvm-svn: 122355
 2010-12-21 20:10:51 +00:00
Dale Johannesen
5f3e7b08f6 Get the type of a shift from the shift, not from its shift 
count operand.  These should be the same but apparently are
not always, and this is cleaner anyway.  This improves the
code in an existing test.

llvm-svn: 122354
 2010-12-21 20:06:19 +00:00
Dale Johannesen
bad19334ee Shift by the word size is invalid IR; don't create it. 
llvm-svn: 122353
 2010-12-21 20:00:06 +00:00
Chris Lattner
8a3058137a fix some typos 
llvm-svn: 122349
 2010-12-21 18:05:22 +00:00
David Greene
33a91c0c9a Revert 122341. It breaks some darwin tests. 
llvm-svn: 122346
 2010-12-21 17:25:43 +00:00
Stuart Hastings
fedc21e594 Fix indentation, add comment. 
llvm-svn: 122345
 2010-12-21 17:16:58 +00:00
Duncan Sands
c7868f60bc Visit instructions deterministically. Use a FIFO so as to approximately 
visit instructions before their uses, since InstructionSimplify does a
better job in that case.  All this prompted by Frits van Bommel.

llvm-svn: 122343
 2010-12-21 17:08:55 +00:00
Stuart Hastings
a1f786efa9 Missing logic for nested CALLSEQ_START/END. 
llvm-svn: 122342
 2010-12-21 17:07:24 +00:00
David Greene
28140b5288 Fix PR 8199. This patch prepends the build tool dir to LLVM programs 
being tested.  This ensures that we test the tools just built and not
some random tools that might happen to be in the user's PATH.  This
makes LLVM testing much more stable and predictable.

llvm-svn: 122341
 2010-12-21 16:55:53 +00:00
Jim Grosbach
fda5c187d6 Tidy up a bit. Trailing whitespace, hard tabs and 80-columns. 
llvm-svn: 122337
 2010-12-21 16:16:00 +00:00
Duncan Sands
6e2fd37144 If an instruction simplifies, try again to simplify any uses of it. This is 
not very important since the pass is only used for testing, but it does make
it more realistic.  Suggested by Frits van Bommel.

llvm-svn: 122336
 2010-12-21 16:12:03 +00:00
Daniel Dunbar
1c98bbd915 MC/Mach-O: Shuffle enums a bit to make it harder to inadvertently use the wrong 
type.

llvm-svn: 122334
 2010-12-21 15:26:45 +00:00
Duncan Sands
658dd68e10 Add an additional InstructionSimplify factorization test. 
llvm-svn: 122333
 2010-12-21 15:12:22 +00:00
Duncan Sands
b4497c7e0f While I don't think any later transforms can fire, it seems cleaner to 
not assume this (for example in case more transforms get added below
it).  Suggested by Frits van Bommel.

llvm-svn: 122332
 2010-12-21 15:03:43 +00:00
Duncan Sands
7e94cad96b Fix inverted condition noticed by Frits van Bommel. 
llvm-svn: 122331
 2010-12-21 14:48:48 +00:00
Duncan Sands
6b0ed93a81 Pull a few more simplifications out of instcombine (there are still 
plenty left though!), in particular for multiplication.

llvm-svn: 122330
 2010-12-21 14:00:22 +00:00
Duncan Sands
3ceeaf218e Fix typo in comment, spotted by Deewiant. 
llvm-svn: 122329
 2010-12-21 13:39:20 +00:00
Duncan Sands
0bd25425b6 Teach InstructionSimplify about distributive laws. These transforms fire 
quite often, but don't make much difference in practice presumably because
instcombine also knows them and more.

llvm-svn: 122328
 2010-12-21 13:32:22 +00:00