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eb388af89f
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23959 Commits

Author SHA1 Message Date
Chris Lattner
eb388af89f improve comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53531 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:55:46 +00:00
Chris Lattner
867661ac8b factor another large hunk of code out into its own function. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53530 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:53:26 +00:00
Chris Lattner
3698909623 Final bit of simplification for FoldBranchToCommonDest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53528 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:20:19 +00:00
Chris Lattner
70087f31f1 simplify logic a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:15:11 +00:00
Chris Lattner
1347e87c7b Refactor some code out into its own helper function, getting rid of crazy multiline 
conditionals and commenting the code better.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53526 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:12:01 +00:00
Nick Lewycky
59cff12f88 Stop creating extraneous smax/umax in SCEV. This removes a regression where we 
started complicating many loops ('for' loops, in fact).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53508 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 07:41:32 +00:00
Nick Lewycky
3ac9e109b2 Enhance analysis of srem. 
Remove dead code analyzing urem. 'urem' of power-of-2 is canonicalized to an
'and' instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53506 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 05:04:38 +00:00
Evan Cheng
5330192ab5 Implement llvm.atomic.cmp.swap.i32 on PPC. Patch by Gary Benson! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53505 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 02:23:19 +00:00
Evan Cheng
b9890ae3c3 Typos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53504 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 02:22:07 +00:00
Evan Cheng
79a796c2b1 Fix PR2536: a nasty spiller bug. If a two-address instruction uses a register but the use portion of its live range is not part of its liveinterval, it must be defined by an implicit_def. In that case, do not spill the use. e.g. 
8   %reg1024<def> = IMPLICIT_DEF
12  %reg1024<def> = INSERT_SUBREG %reg1024<kill>, %reg1025, 2

The live range [12, 14) are not part of the r1024 live interval since it's defined by an implicit def. It will not conflicts with live interval of r1025. Now suppose both registers are spilled, you can easily see a situation where both registers are reloaded before the INSERT_SUBREG and both target registers that would overlap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53503 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 01:56:02 +00:00
Evan Cheng
b5eec33dcd Back out 53476 and 53480 for now. Somehow they cause llc to miscompile 179.art. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53502 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 01:38:51 +00:00
Dan Gohman
cddc11e757 Add a utility function to MachineInstr for testing whether an instruction 
has exactly one MachineMemOperand, and change some X86 lowering code to
make use of it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53498 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 00:10:52 +00:00
Dan Gohman
e6acf36dca Fix spelling of "hierarchy" in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53489 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:51:32 +00:00
Dan Gohman
a54cf17661 Include a frame index in the "fixed stack" pseudo source value 
instead of using the frame index for the SVOffset, which was
inconsistent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53486 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:44:52 +00:00
Dan Gohman
5e76c3be73 Fix an obsolete top-level comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53481 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:39:58 +00:00
Dan Gohman
0f4012f475 Factor out debugging code into the common base class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53480 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:36:22 +00:00
Dan Gohman
dbe2a5a269 Add support for putting NamedRegionTimers in TimerGroups, and 
use a timer group for the timers in SelectionDAGISel. Also,
Split scheduling out from emitting, to give each their own
timer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53476 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 21:54:34 +00:00
Dan Gohman
c418bf3dd5 Use find instead of lower_bound. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53474 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:58:19 +00:00
Chris Lattner
78d60458d5 add support for returning i128, PR2532. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53472 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:53:00 +00:00
Dan Gohman
dc2fbddd9d Trim unnecessary #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53471 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:38:31 +00:00
Owen Anderson
c45996bf74 Don't call lookupNumber more than we have to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53470 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:05:13 +00:00
Duncan Sands
92e0834ac7 Remove an apparently useless routine: there should 
be no need to split the result of a vector RET node,
since they are always already legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53462 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 17:02:09 +00:00
Duncan Sands
ac6cecec18 It is pointless to turn a UINT_TO_FP into an 
SINT_TO_FP libcall plus additional operations:
it might as well be a direct UINT_TO_FP libcall.
So only turn it into an SINT_TO_FP if the target
has special handling for SINT_TO_FP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 17:00:14 +00:00
Duncan Sands
9bed0f58eb Add two missing SINT_TO_FP libcalls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53460 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 16:57:02 +00:00
Duncan Sands
edfba7e707 Port a shift-by-1 optimization from LegalizeDAG: it 
was presumably added after the rest of the code was
copied to LegalizeTypes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53459 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 16:54:57 +00:00
Duncan Sands
dddc6291fb Add support for 128 bit shifts and 32 bit shifts 
on 16 bit machines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53458 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 16:52:29 +00:00
Nick Lewycky
7d9843fc37 Document 'mask' in this calculation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53454 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 08:16:26 +00:00
Duncan Sands
569d8f7087 Align comments, colons and cases. Remove trailing 
whitespace.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53453 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:37:30 +00:00
Nick Lewycky
1f26c188f8 Remove misleading constant from comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53452 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:36:19 +00:00
Nick Lewycky
4bf1e59819 Add another optimization from PR2330. Also catch some missing cases that are 
similar.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53451 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:20:53 +00:00
Bill Wendling
71ca353ae6 The frame address on an x86-64 box needs to be offset by -8, not -4. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53450 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:18:52 +00:00
Chris Lattner
d01bee7170 a missed optimization that Eli spotted 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53449 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 06:40:29 +00:00
Chris Lattner
f9685ac68e another bug in the same line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53448 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 06:38:16 +00:00
Chris Lattner
a8ff4a88bb fix a bug spotted by Eli's eagle eyes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53447 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 06:36:01 +00:00
Chris Lattner
183661e43a simplify and merge a bunch of code. Instead of comparing against 
the min/max values for an integer type, compare against the min/max
values we can prove contain the input.  This might be a tighter bound,
so this is general goodness.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53446 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 05:40:05 +00:00
Chris Lattner
84dff672a4 fold away (x <= cst) earlier, allowing us to not have to 
handle them in some code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53445 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 05:08:55 +00:00
Chris Lattner
85b5eb0505 Fix folding of icmp's of i1 where the comparison is signed. The code 
was using the algorithm for folding unsigned comparisons which is
completely wrong.  This has been broken since the signless types change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53444 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 04:20:58 +00:00
Chris Lattner
f299184565 Fix a bogus optimization: folding (slt (zext i1 A to i32), 1) -> (slt i1 A, true) 
This cause a regression in InstCombine/JavaCompare, which was doing the right
thing on accident.  To handle the missed case, generalize the comparisons based
on masked bits a little bit to handle comparisons against the max value. For 
example, we can now xform (slt i32 (and X, 4), 4) -> (setne i32 (and X, 4), 4)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53443 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 04:09:09 +00:00
Chris Lattner
1913b94c11 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53440 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 00:30:39 +00:00
Chris Lattner
d15990189d Implement PR2538 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53438 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 00:30:06 +00:00
Chris Lattner
c563e1d8fe Fix a bug in the soft-float handling of FCOPYSIGN that Duncan noticed 
when working on legalizetypes.  Both legalizetypes and legalizeops now
produce hte same code for CodeGen/ARM/fcopysign.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53435 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 23:46:13 +00:00
Chris Lattner
70587ea813 make legalize types be a command line option: -enable-legalize-types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53434 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 23:37:50 +00:00
Dan Gohman
fdeb4b3f1d Make stack slot coloring's debug output more consistent with 
other passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53415 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 19:49:32 +00:00
Evan Cheng
bdb10fe0f6 Change StackSlotForVirtReg (which maps vregs to frame indices) from std::map to IndexedMap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53414 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 18:23:23 +00:00
Chris Lattner
6291d69c4c Remove extraneous vertical whitespace before Eric gets the wrong idea ;-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53411 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 16:49:53 +00:00
Chris Lattner
85e7ac0353 Fix an altivec constant miscompilation that Duncan found through 
his work on legalizetypes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53410 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 16:33:38 +00:00
Duncan Sands
5ac319ac71 Add support for 128 bit multiplicative operations. 
Lack of these caused a bootstrap failure with Fortran
on x86-64 with LegalizeTypes turned on.  While there,
be nice to 16 bit machines and support expansion of
i32 too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53408 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 15:35:05 +00:00
Duncan Sands
be1ad4de29 Add a mysteriously missing libcall, FPTOSINT_F80_I32. 
Be nice to 16 bit machines by supporting FP_TO_XINT
expansion for these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53407 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 15:33:02 +00:00
Duncan Sands
03dc093a2e Fix a FIXME: use an apint in CTTZ legalization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53406 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 15:30:54 +00:00
Duncan Sands
ae099d5442 Remove PromoteIntRes_FP_ROUND - not sure what it 
was doing there: FP_ROUND returns a float, not an
integer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53405 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 15:29:55 +00:00