Jim Laskey
9bfa2dcff6
TargetLowering::ComputeMaskedBits was not clearing reciprocal bits on shifts.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28765 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-13 13:08:58 +00:00
Andrew Lenharth
232c910b8a
Start on my todo list
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28752 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-12 16:07:18 +00:00
Evan Cheng
7e399c14ab
Another typo. Pointed out by Nate Begeman.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28353 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-17 18:22:14 +00:00
Evan Cheng
e9b3da17cd
Fix an obvious bug in getPackedTypeBreakdown. Return 1 if type is legal.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28351 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-17 18:10:06 +00:00
Andrew Lenharth
3e348494bb
this should be 128 I think
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28330 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-16 17:45:23 +00:00
Andrew Lenharth
dae9cbe8d4
Move this code to a common place
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28329 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-16 17:42:15 +00:00
Owen Anderson
07000c6f01
Refactor a bunch of includes so that TargetMachine.h doesn't have to include
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TargetData.h. This should make recompiles a bit faster with my current
TargetData tinkering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28238 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-12 06:33:49 +00:00
Chris Lattner
1b7371331f
When tracking demanded bits, if any bits from the sext of an SRA are demanded,
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then so is the input sign bit. This fixes mediabench/g721 on X86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28166 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 17:22:53 +00:00
Chris Lattner
822db93e57
Use ComputeMaskedBits to determine # sign bits as a fallback. This allows us
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to handle all kinds of stuff, including silly things like:
sextinreg(setcc,i16) -> setcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28155 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 23:48:13 +00:00
Chris Lattner
e60351bb72
Add some more sign propagation cases
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28154 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 23:40:29 +00:00
Chris Lattner
d6f7fe76a6
Add some more simple sign bit propagation cases.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28149 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 22:39:59 +00:00
Chris Lattner
5c3e21d687
Add some really really simple code for computing sign-bit propagation.
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This will certainly be enhanced in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28145 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 09:27:13 +00:00
Chris Lattner
c93dfda905
Fold (trunc (srl x, c)) -> (srl (trunc x), c)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28138 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 00:11:52 +00:00
Chris Lattner
fe8babf689
Implement ComputeMaskedBits/SimplifyDemandedBits for ISD::TRUNCATE
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28135 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 22:32:12 +00:00
Owen Anderson
a69571c799
Refactor TargetMachine, pushing handling of TargetData into the target-specific subclasses. This has one caller-visible change: getTargetData() now returns a pointer instead of a reference.
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This fixes PR 759.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28074 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 01:29:57 +00:00
Chris Lattner
1b5232a937
relax assertion
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27358 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-02 06:19:46 +00:00
Chris Lattner
1482b5fc7a
Allow targets to compute masked bits for intrinsics.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27357 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-02 06:15:09 +00:00
Chris Lattner
a6c9de4293
Was returning the wrong type.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27277 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-31 01:50:09 +00:00
Chris Lattner
79227e2906
Modify the TargetLowering::getPackedTypeBreakdown method to also return the
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unpromoted element type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27273 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-31 00:46:36 +00:00
Chris Lattner
dc87929609
Implement TargetLowering::getPackedTypeBreakdown
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27270 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-31 00:28:56 +00:00
Evan Cheng
677274b1cb
Typo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27008 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-23 23:24:51 +00:00
Chris Lattner
3a59358499
set TransformToType correctly for vector types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26797 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-16 19:50:01 +00:00
Evan Cheng
30b37b5f29
Add LSR hooks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26740 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-13 23:18:16 +00:00
Chris Lattner
b6b17ffbc6
I can't convince myself that this is safe, remove the recursive call.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26725 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-13 06:42:16 +00:00
Chris Lattner
c1d9f1de41
Do not fold (add (shl x, c1), (shl c2, c1)) -> (shl (add x, c2), c1),
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we want to canonicalize the other way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26547 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-05 19:52:57 +00:00
Evan Cheng
33143dce15
Number of NodeTypes now exceeds 128.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26503 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-03 06:58:59 +00:00
Chris Lattner
00ffed0468
Add interfaces for targets to provide target-specific dag combiner optimizations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26442 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-01 04:52:55 +00:00
Chris Lattner
a6bc5a4d21
Implement bit propagation through sub nodes, this (re)implements
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PowerPC/div-2.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26392 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-27 01:00:42 +00:00
Chris Lattner
81cd35586f
Check RHS simplification before LHS simplification to avoid infinitely looping
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on PowerPC/small-arguments.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26389 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-27 00:36:27 +00:00
Chris Lattner
5f0c658aa4
Just like we use the RHS of an AND to simplify the LHS, use the LHS to
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simplify the RHS. This allows for the elimination of many thousands of
ands from multisource, and compiles CodeGen/PowerPC/and-elim.ll:test2
into this:
_test2:
srwi r2, r3, 1
xori r3, r2, 40961
blr
instead of this:
_test2:
rlwinm r2, r3, 31, 17, 31
xori r2, r2, 40961
rlwinm r3, r2, 0, 16, 31
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26388 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-27 00:22:28 +00:00
Chris Lattner
ec665151b8
Add a bunch of missed cases. Perhaps the most significant of which is that
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assertzext produces zero bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26386 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-26 23:36:02 +00:00
Chris Lattner
2b7401e28e
Recognize memory operand codes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26345 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-24 01:10:46 +00:00
Chris Lattner
b3befd41b4
Don't return registers from register classes that aren't legal.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26317 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-22 23:00:51 +00:00
Chris Lattner
1efa40f6a4
split register class handling from explicit physreg handling.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26308 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-22 00:56:39 +00:00
Chris Lattner
4217ca8dc1
Updates to match change of getRegForInlineAsmConstraint prototype
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26305 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-21 23:11:00 +00:00
Nate Begeman
003a272319
Add a fold for add that exchanges it with a constant shift if possible, so
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that the shift may be more easily folded into other operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26286 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-18 02:43:25 +00:00
Jeff Cohen
5755b17044
Fix bug noticed by VC++.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26252 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-17 02:12:18 +00:00
Nate Begeman
368e18d56a
Rework the SelectionDAG-based implementations of SimplifyDemandedBits
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and ComputeMaskedBits to match the new improved versions in instcombine.
Tested against all of multisource/benchmarks on ppc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26238 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16 21:11:51 +00:00
Evan Cheng
a03a5dc7ce
Rename maxStoresPerMemSet to maxStoresPerMemset, etc.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26174 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14 08:38:30 +00:00
Chris Lattner
eb8146b5ee
implementation of some methods for inlineasm
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25951 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-04 02:13:02 +00:00
Nate Begeman
244d1dccd1
Implement some feedback from sabre
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25946 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-03 22:38:07 +00:00
Nate Begeman
de99629e2a
Add a framework for eliminating instructions that produces undemanded bits.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25945 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-03 22:24:05 +00:00
Chris Lattner
9a06cce0f2
Implement MaskedValueIsZero for ANY_EXTEND nodes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25900 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-02 06:43:15 +00:00
Chris Lattner
a55079a5cc
Beef up the interface to inline asm constraint parsing, making it more general, useful, and easier to use.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25866 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-01 01:29:47 +00:00
Chris Lattner
c6fd6cd65c
Move MaskedValueIsZero from the DAGCombiner to the TargetLowering interface,making isMaskedValueZeroForTargetNode simpler, and useable from other partsof the compiler.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25803 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-30 04:09:27 +00:00
Chris Lattner
87c890a9c2
adjust prototype
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25798 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-30 03:49:07 +00:00
Chris Lattner
3e6e8cc26b
clean up interface to ValueTypeActions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25783 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-29 08:41:12 +00:00
Chris Lattner
4ccb070f15
Implement a method for inline asm support
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25660 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-26 20:37:03 +00:00
Chris Lattner
ee4a76563a
initialize an instance var, apparently I forgot to commit this long ago
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25609 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-25 18:57:15 +00:00
Evan Cheng
0577a22c67
Set SchedulingForLatency to be the default scheduling preference for all.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25607 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-25 18:52:42 +00:00
Evan Cheng
ff9be11da2
Lefted out TargetLowering::
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24922 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-21 23:14:54 +00:00
Evan Cheng
3a03ebb377
* Fix a GlobalAddress lowering bug.
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* Teach DAG combiner about X86ISD::SETCC by adding a TargetLowering hook.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24921 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-21 23:05:39 +00:00
Evan Cheng
7226158d7e
Added a hook to print out names of target specific DAG nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24877 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20 06:22:03 +00:00
Nate Begeman
6a648614e8
Add the majority of the vector machien value types we expect to support,
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and make a few changes to the legalization machinery to support more than
16 types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24511 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-29 05:45:29 +00:00
Nate Begeman
4ef3b817fe
Rather than attempting to legalize 1 x float, make sure the SD ISel never
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generates it. Make MVT::Vector expand-only, and remove the code in
Legalize that attempts to legalize it.
The plan for supporting N x Type is to continually epxand it in ExpandOp
until it gets down to 2 x Type, where it will be scalarized into a pair of
scalars.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24482 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-22 01:29:36 +00:00
Nate Begeman
405e3ecb56
Invert the TargetLowering flag that controls divide by consant expansion.
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Add a new flag to TargetLowering indicating if the target has really cheap
signed division by powers of two, make ppc use it. This will probably go
away in the future.
Implement some more ISD::SDIV folds in the dag combiner
Remove now dead code in the x86 backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23853 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-21 00:02:42 +00:00
Chris Lattner
8e6be8b921
initialize new flag
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23480 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 22:13:56 +00:00
Reid Spencer
0f9beca707
Change the names of member variables per Chris' instructions, and document
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them more clearly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23118 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-27 19:09:02 +00:00
Chris Lattner
9ed62c16f2
Adjust to new interface
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23010 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-24 16:34:12 +00:00
Reid Spencer
a0f5bf306c
For: memory operations -> stores
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This is the first incremental patch to implement this feature. It adds no
functionality to LLVM but setup up the information needed from targets in
order to implement the optimization correctly. Each target needs to specify
the maximum number of store operations for conversion of the llvm.memset,
llvm.memcpy, and llvm.memmove intrinsics into a sequence of store operations.
The limit needs to be chosen at the threshold of performance for such an
optimization (generally smallish). The target also needs to specify whether
the target can support unaligned stores for multi-byte store operations.
This helps ensure the optimization doesn't generate code that will trap on
an alignment errors.
More patches to follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22468 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-19 04:52:44 +00:00
Misha Brukman
f976c856fc
Remove trailing whitespace
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21422 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 22:55:34 +00:00
Chris Lattner
d6e496732b
Add a hook to find out how the target handles shift amounts that are out of
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range. Either they are undefined (the default), they mask the shift amount
to the size of the register (X86, Alpha, etc), or they extend the shift (PPC).
This defaults to undefined, which is conservatively correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19677 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 03:36:14 +00:00
Chris Lattner
714b69d047
Shift and setcc types default to the pointer type.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19619 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 23:59:48 +00:00
Chris Lattner
cba82f9339
Use enums, move virtual dtor out of line.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19610 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 07:28:11 +00:00
Chris Lattner
cfdfe4ce4a
Set up identity transforms.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19584 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:20:18 +00:00
Chris Lattner
bb97d81cc8
Move some information out of LegalizeDAG into the generic Target interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19581 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:10:58 +00:00
Chris Lattner
7abf820182
Clear the whole array, always.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19482 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 20:25:26 +00:00
Chris Lattner
310968cbbb
First draft of new Target interface
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19324 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 07:44:53 +00:00